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Remove MIPS architecture 

The MIPS architecture port has been added 5+ years ago in order to
support a Chrome OS project that ended up going nowhere. No other board
has used it since and nobody is still willing or has the expertise and
hardware to maintain it. We have decided that it has become too much of
a mainenance burden and the chance of anyone ever reviving it seems too
slim at this point. This patch eliminates all MIPS code and
MIPS-specific hacks.

Change-Id: I5e49451cd055bbab0a15dcae5f53e0172e6e2ebe
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34919
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Julius Werner 2019-08-16 15:35:39 -07:00 committed by Patrick Georgi
parent 63c444a69b
commit f96d9051c2
75 changed files with 15 additions and 3078 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Documentation/contributing/project_ideas.md
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@ -64,7 +64,7 @@ across architectures.
### Mentors ### Mentors
* Timothy Pearson <tpearson@raptorengineering.com> * Timothy Pearson <tpearson@raptorengineering.com>
## Support QEMU AArch64 or MIPS ## Support QEMU AArch64
Having QEMU support for the architectures coreboot can boot helps with Having QEMU support for the architectures coreboot can boot helps with
some (limited) compatibility testing: While QEMU generally doesn't need some (limited) compatibility testing: While QEMU generally doesn't need
much hardware init, any CPU state changes in the boot flow will likely much hardware init, any CPU state changes in the boot flow will likely
@ -105,7 +105,7 @@ would help to ensure code quality and make the runtime code more robust.
### Mentors ### Mentors
* Werner Zeh <werner.zeh@gmx.net> * Werner Zeh <werner.zeh@gmx.net>
## Port payloads to ARM, AArch64, MIPS or RISC-V ## Port payloads to ARM, AArch64 or RISC-V
While we have a rather big set of payloads for x86 based platforms, all other While we have a rather big set of payloads for x86 based platforms, all other
architectures are rather limited. Improve the situation by porting a payload architectures are rather limited. Improve the situation by porting a payload
to one of the platforms, for example GRUB2, U-Boot (the UI part), Tianocore, to one of the platforms, for example GRUB2, U-Boot (the UI part), Tianocore,

6
MAINTAINERS
View File

@ -477,12 +477,6 @@ F: util/arm_boot_tools/
F: util/exynos/ F: util/exynos/
F: util/ipqheader/ F: util/ipqheader/
MIPS ARCHITECTURE
F: src/arch/mips/
F: src/cpu/mips/
F: src/soc/imgtec/
F: util/bimgtool/
X86 ARCHITECTURE X86 ARCHITECTURE
F: src/arch/x86/ F: src/arch/x86/
F: src/cpu/x86/ F: src/cpu/x86/

9
payloads/libpayload/Kconfig
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@ -114,11 +114,6 @@ config ARCH_ARM64
help help
Support the ARM64 architecture Support the ARM64 architecture
config ARCH_MIPS
bool "MIPS"
help
Support the MIPS architecture
endchoice endchoice
config MULTIBOOT config MULTIBOOT
@ -147,12 +142,11 @@ config BASE_ADDRESS
hex "Base address" hex "Base address"
default 0x04000000 if ARCH_ARM default 0x04000000 if ARCH_ARM
default 0x80100000 if ARCH_ARM64 default 0x80100000 if ARCH_ARM64
default 0x00000000 if ARCH_MIPS
default 0x00100000 if ARCH_X86 default 0x00100000 if ARCH_X86
help help
This is the base address for the payload. This is the base address for the payload.
If unsure, set to 0x00100000 on x86, 0x00000000 on MIPS, If unsure, set to 0x00100000 on x86,
0x04000000 on ARM or 0x80100000 on ARM64. 0x04000000 on ARM or 0x80100000 on ARM64.
endmenu endmenu
@ -452,5 +446,4 @@ config IO_ADDRESS_SPACE
source "arch/arm/Kconfig" source "arch/arm/Kconfig"
source "arch/arm64/Kconfig" source "arch/arm64/Kconfig"
source "arch/mips/Kconfig"
source "arch/x86/Kconfig" source "arch/x86/Kconfig"

2
payloads/libpayload/Makefile
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@ -95,7 +95,6 @@ include $(HAVE_DOTCONFIG)
ARCHDIR-$(CONFIG_LP_ARCH_ARM) := arm ARCHDIR-$(CONFIG_LP_ARCH_ARM) := arm
ARCHDIR-$(CONFIG_LP_ARCH_ARM64) := arm64 ARCHDIR-$(CONFIG_LP_ARCH_ARM64) := arm64
ARCHDIR-$(CONFIG_LP_ARCH_MIPS) := mips
ARCHDIR-$(CONFIG_LP_ARCH_X86) := x86 ARCHDIR-$(CONFIG_LP_ARCH_X86) := x86
ARCH-y := $(ARCHDIR-y) ARCH-y := $(ARCHDIR-y)
@ -105,7 +104,6 @@ ARCH-y := $(ARCHDIR-y)
ARCH-$(CONFIG_LP_ARCH_ARM) := arm ARCH-$(CONFIG_LP_ARCH_ARM) := arm
ARCH-$(CONFIG_LP_ARCH_ARM64) := arm64 ARCH-$(CONFIG_LP_ARCH_ARM64) := arm64
ARCH-$(CONFIG_LP_ARCH_X86) := x86_32 ARCH-$(CONFIG_LP_ARCH_X86) := x86_32
ARCH-$(CONFIG_LP_ARCH_MIPS) := mips
# Three cases where we don't need fully populated $(obj) lists: # Three cases where we don't need fully populated $(obj) lists:
# 1. when no .config exists # 1. when no .config exists

1
payloads/libpayload/Makefile.inc
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@ -33,7 +33,6 @@ export KERNELVERSION := 0.2.0
ARCHDIR-$(CONFIG_LP_ARCH_ARM) := arm ARCHDIR-$(CONFIG_LP_ARCH_ARM) := arm
ARCHDIR-$(CONFIG_LP_ARCH_ARM64) := arm64 ARCHDIR-$(CONFIG_LP_ARCH_ARM64) := arm64
ARCHDIR-$(CONFIG_LP_ARCH_MIPS) := mips
ARCHDIR-$(CONFIG_LP_ARCH_X86) := x86 ARCHDIR-$(CONFIG_LP_ARCH_X86) := x86
DESTDIR ?= install DESTDIR ?= install

24
payloads/libpayload/arch/mips/Kconfig
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@ -1,24 +0,0 @@
#
# This file is part of the libpayload project.
#
# Copyright (C) 2014 Imagination Technologies
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; version 2 of
# the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
if ARCH_MIPS
config ARCH_SPECIFIC_OPTIONS # dummy
def_bool y
select LITTLE_ENDIAN
endif

33
payloads/libpayload/arch/mips/Makefile.inc
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@ -1,33 +0,0 @@
#
# This file is part of the libpayload project.
#
# Copyright (C) 2014 Imagination Technologies
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; version 2 of
# the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
###############################################################################
CFLAGS += -march=mips32r2 -mxgot
head.o-y += head.S
libc-y += cache.c
libc-y += coreboot.c
libc-y += dummy_media.c
libc-y += exception_asm.S
libc-y += exception.c
libc-y += gdb.c
libc-y += main.c
libc-y += selfboot.c
libc-y += sysinfo.c
libc-y += string.c
libc-y += timer.c
libc-y += util.S

72
payloads/libpayload/arch/mips/cache.c
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@ -1,72 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <arch/cache.h>
void dcache_clean_all(void)
{
/* TODO */
}
void dcache_invalidate_all(void)
{
/* TODO */
}
void dcache_clean_invalidate_all(void)
{
/* TODO */
}
void tlb_invalidate_all(void)
{
/* TODO */
}
unsigned int dcache_line_bytes(void)
{
/* TO DO */
return 0;
}
void dcache_mmu_disable(void)
{
/* TODO */
}
void dcache_mmu_enable(void)
{
/* TODO */
}
void cache_sync_instructions(void)
{
/* TODO */
}
void mmu_init(void)
{
/* TODO */
}
void mmu_disable_range(unsigned long start_mb, unsigned long size_mb)
{
/* TODO */
}
void mmu_config_range(unsigned long start_mb, unsigned long size_mb,
enum dcache_policy policy)
{
/* TODO */
}

51
payloads/libpayload/arch/mips/coreboot.c
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@ -1,51 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <libpayload-config.h>
#include <libpayload.h>
#include <coreboot_tables.h>
/* This pointer gets set in head.S and is passed in from coreboot. */
void *cb_header_ptr;
static void cb_parse_dma(void *ptr)
{
struct lb_range *dma = (struct lb_range *)ptr;
init_dma_memory(bus_to_virt(dma->range_start), dma->range_size);
}
/* Architecture specific */
int cb_parse_arch_specific(struct cb_record *rec, struct sysinfo_t *info)
{
switch (rec->tag) {
case CB_TAG_DMA:
cb_parse_dma(rec);
break;
default:
return 0;
}
return 1;
}
int get_coreboot_info(struct sysinfo_t *info)
{
return cb_parse_header(cb_header_ptr, 1, info);
}
void *get_cb_header_ptr(void)
{
return cb_header_ptr;
}

42
payloads/libpayload/arch/mips/dummy_media.c
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@ -1,42 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Google, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#define LIBPAYLOAD
#include <cbfs.h>
/* The generic cbfs code relies on the libpayload_init_default_cbfs_media
* symbol. Therefore, provide an implementation that just throws an error. */
int libpayload_init_default_cbfs_media(struct cbfs_media *media);
__attribute__((weak)) int libpayload_init_default_cbfs_media(
struct cbfs_media *media)
{
return -1;
}

103
payloads/libpayload/arch/mips/exception.c
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@ -1,103 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <arch/exception.h>
#include <exception.h>
#include <libpayload.h>
#include <stdint.h>
u32 exception_stack[0x400] __attribute__((aligned(8)));
struct exception_state_t exception_state;
static const char *names[EXC_COUNT] = {
[EXC_CACHE_ERROR] = "Cache error exception",
[EXC_TLB_REFILL_AND_ALL] = "TLB refill or general exception",
[EXC_INTERRUPT] = "Interrupt",
[EXC_EJTAG_DEBUG] = "EJTAG debug exception"
};
static void dump_exception_state(void)
{
printf("%s exception!\n", names[exception_state_ptr->vector]);
printf("\nRegisters:\n");
printf("ZERO:\t0x%08x\n", exception_state_ptr->regs.zero);
printf("AT:\t0x%08x\n", exception_state_ptr->regs.at);
printf("V0:\t0x%08x\n", exception_state_ptr->regs.v0);
printf("V1:\t0x%08x\n", exception_state_ptr->regs.v1);
printf("A0:\t0x%08x\n", exception_state_ptr->regs.a0);
printf("A1:\t0x%08x\n", exception_state_ptr->regs.a1);
printf("A2:\t0x%08x\n", exception_state_ptr->regs.a2);
printf("A3:\t0x%08x\n", exception_state_ptr->regs.a3);
printf("T0:\t0x%08x\n", exception_state_ptr->regs.t0);
printf("T1:\t0x%08x\n", exception_state_ptr->regs.t1);
printf("T2:\t0x%08x\n", exception_state_ptr->regs.t2);
printf("T3:\t0x%08x\n", exception_state_ptr->regs.t3);
printf("T4:\t0x%08x\n", exception_state_ptr->regs.t4);
printf("T5:\t0x%08x\n", exception_state_ptr->regs.t5);
printf("T6:\t0x%08x\n", exception_state_ptr->regs.t6);
printf("T7:\t0x%08x\n", exception_state_ptr->regs.t7);
printf("S0:\t0x%08x\n", exception_state_ptr->regs.s0);
printf("S1:\t0x%08x\n", exception_state_ptr->regs.s1);
printf("S2:\t0x%08x\n", exception_state_ptr->regs.s2);
printf("S3:\t0x%08x\n", exception_state_ptr->regs.s3);
printf("S4:\t0x%08x\n", exception_state_ptr->regs.s4);
printf("S5:\t0x%08x\n", exception_state_ptr->regs.s5);
printf("S6:\t0x%08x\n", exception_state_ptr->regs.s6);
printf("S7:\t0x%08x\n", exception_state_ptr->regs.s7);
printf("T8:\t0x%08x\n", exception_state_ptr->regs.t8);
printf("T9:\t0x%08x\n", exception_state_ptr->regs.t9);
printf("K0:\t0x%08x\n", exception_state_ptr->regs.k0);
printf("K1:\t0x%08x\n", exception_state_ptr->regs.k1);
printf("GP:\t0x%08x\n", exception_state_ptr->regs.gp);
printf("SP:\t0x%08x\n", exception_state_ptr->regs.sp);
printf("FP:\t0x%08x\n", exception_state_ptr->regs.fp);
printf("RA:\t0x%08x\n", exception_state_ptr->regs.ra);
}
static void dump_stack(uintptr_t addr, size_t bytes)
{
int i, j;
const int words_per_line = 8;
int words_to_print;
uint32_t *ptr = (uint32_t *)
(addr & ~(words_per_line * sizeof(*ptr) - 1));
printf("Dumping stack:\n");
words_to_print = bytes/sizeof(*ptr);
for (i = words_to_print; i >= 0; i -= words_per_line) {
printf("%p: ", ptr + i);
for (j = i; j < i + words_per_line; j++)
printf("%08x ", *(ptr + j));
printf("\n");
}
}
void exception_dispatch(void)
{
u32 vec = exception_state_ptr->vector;
die_if(vec >= EXC_COUNT || !names[vec], "Bad exception vector %u", vec);
dump_exception_state();
dump_stack(exception_state_ptr->regs.sp, 512);
halt();
}
void exception_init(void)
{
exception_stack_end = exception_stack + ARRAY_SIZE(exception_stack);
exception_state_ptr = &exception_state;
exception_init_asm();
}

200
payloads/libpayload/arch/mips/exception_asm.S
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@ -1,200 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#define STATUS_REGISTER $12,0
#define BOOT_EXC_VECTOR_MASK (1 << 22)
#define EBASE_REGISTER $15,1
#define EXCEPTION_BASE_MASK (0xFFFFF000)
/* Don't reorder instructions */
.set noreorder
.set noat
.align 4
.global exception_stack_end
exception_stack_end:
.word 0
.global exception_state_ptr
exception_state_ptr:
.word 0
/* Temporary variables. */
ret_addr:
.word 0
exception_sp:
.word 0
vector:
.word 0
/* Cache error */
.org 0x100
li $v0, 0x0
la $at, vector
sw $v0, 0x00($at)
b exception_common
nop
/* TLB refill and all others */
.org 0x180
li $v0, 0x1
la $at, vector
sw $v0, 0x00($at)
b exception_common
nop
/* Interrupt */
.org 0x200
li $v0, 0x2
la $at, vector
sw $v0, 0x00($at)
b exception_common
nop
/* EJTAG debug exception */
.org 0x480
li $v0, 0x3
la $at, vector
sw $v0, 0x00($at)
b exception_common
nop
exception_common:
/* Obtain return address of exception */
la $v0, ret_addr
sw $ra, 0x00($v0)
/* Initialize $gp */
bal 1f
nop
.word _gp
1:
lw $gp, 0($ra)
la $at, exception_sp
sw $sp, 0x00($at)
lw $sp, exception_state_ptr
/* Save all registers */
sw $zero, 0x00($sp)
sw $at, 0x04($sp)
sw $v0, 0x08($sp)
sw $v1, 0x0C($sp)
sw $a0, 0x10($sp)
sw $a1, 0x14($sp)
sw $a2, 0x18($sp)
sw $a3, 0x1C($sp)
sw $t0, 0x20($sp)
sw $t1, 0x34($sp)
sw $t2, 0x28($sp)
sw $t3, 0x2C($sp)
sw $t4, 0x30($sp)
sw $t5, 0x34($sp)
sw $t6, 0x38($sp)
sw $t7, 0x3C($sp)
sw $s0, 0x40($sp)
sw $s1, 0x44($sp)
sw $s2, 0x48($sp)
sw $s3, 0x4C($sp)
sw $s4, 0x50($sp)
sw $s5, 0x54($sp)
sw $s6, 0x58($sp)
sw $s7, 0x5C($sp)
sw $t8, 0x60($sp)
sw $t9, 0x64($sp)
sw $k0, 0x68($sp)
sw $k1, 0x6C($sp)
sw $gp, 0x70($sp)
lw $v0, exception_sp
sw $v0, 0x74($sp)
sw $fp, 0x78($sp)
lw $v0, ret_addr
sw $v0, 0x7C($sp)
lw $v0, vector
sw $v0, 0x80($sp)
/* Point SP to the stack for C code */
lw $sp, exception_stack_end
/* Give control to exception dispatch */
la $a2, exception_dispatch
jalr $a2
nop
lw $sp, exception_state_ptr
/* Restore registers */
lw $zero, 0x00($sp)
lw $at, 0x04($sp)
lw $v0, 0x08($sp)
lw $v1, 0x0C($sp)
lw $a0, 0x10($sp)
lw $a1, 0x14($sp)
lw $a2, 0x18($sp)
lw $a3, 0x1C($sp)
lw $t0, 0x20($sp)
lw $t1, 0x24($sp)
lw $t2, 0x28($sp)
lw $t3, 0x2C($sp)
lw $t4, 0x30($sp)
lw $t5, 0x34($sp)
lw $t6, 0x38($sp)
lw $t7, 0x3C($sp)
lw $s0, 0x40($sp)
lw $s1, 0x44($sp)
lw $s2, 0x48($sp)
lw $s3, 0x4C($sp)
lw $s4, 0x50($sp)
lw $s5, 0x54($sp)
lw $s6, 0x58($sp)
lw $s7, 0x5C($sp)
lw $t8, 0x60($sp)
lw $t9, 0x64($sp)
lw $k0, 0x68($sp)
sw $k1, 0x6C($sp)
sw $gp, 0x70($sp)
sw $fp, 0x78($sp)
sw $ra, 0x7C($sp)
/* Return */
eret
.global exception_init_asm
exception_init_asm:
.set push
/* Make sure boot exception vector is 1 before writing EBASE */
mfc0 $t0, STATUS_REGISTER
li $t1, BOOT_EXC_VECTOR_MASK
or $t0, $t0, $t1
mtc0 $t0, STATUS_REGISTER
/*Prepare base address */
la $t1, exception_stack_end
li $t2, EXCEPTION_BASE_MASK
and $t1, $t1, $t2
/* Prepare EBASE register value */
mfc0 $t0, EBASE_REGISTER
li $t2, ~(EXCEPTION_BASE_MASK)
and $t0, $t0, $t2
/* Filling base address */
or $t0, $t0, $t1
mtc0 $t0, EBASE_REGISTER
/* Clear boot exception vector bit for EBASE value to take effect */
mfc0 $t0, STATUS_REGISTER
li $t1, ~BOOT_EXC_VECTOR_MASK
and $t0, $t0, $t1
mtc0 $t0, STATUS_REGISTER
.set pop
/* Return */
jr $ra

27
payloads/libpayload/arch/mips/gdb.c
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@ -1,27 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <gdb.h>
#include <libpayload.h>
void gdb_arch_init(void)
{
}
void gdb_arch_enter(void)
{
}

96
payloads/libpayload/arch/mips/head.S
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@ -1,96 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <arch/cpu.h>
/* Disable interrupts and mark the kernel mode */
.macro setup_c0_status clr
.set push
mfc0 $t0, $CP0_STATUS
or $t0, ST0_CU0 | 0x1f | \clr
xor $t0, 0x1f | \clr
mtc0 $t0, $CP0_STATUS
.set noreorder
sll $zero, 3
.set pop
.endm
/* Don't reorder instructions */
.set noreorder
.align 4
.global cb_header_ptr
cb_header_ptr:
.word 0
.global old_sp
old_sp:
.word 0
.global _entry, _leave
.text
/* Our entry point */
_entry:
/*
* This function saves off the previous stack and switches us to our
* own execution environment.
*/
/* Clear watch and cause registers */
mtc0 $zero, $CP0_WATCHLO
mtc0 $zero, $CP0_WATCHHI
mtc0 $zero, $CP0_CAUSE
/* Disable interrupts */
setup_c0_status 0
/* Don't use at in synthetic instr. */
.set noat
/* Init timer */
mtc0 $zero, $CP0_COUNT
mtc0 $zero, $CP0_COMPARE
/* Initialize $gp */
bal 1f
nop
.word _gp
1:
lw $gp, 0($ra)
/* Save off the location of the coreboot tables */
la $at, cb_header_ptr
sw $a0, 0x00($at)
/* Save old stack pointer */
la $at, old_sp
sw $sp, 0x00($at)
/* Setup new stack */
la $sp, _stack
/* Let's rock */
la $a2, start_main
jalr $a2
nop
_leave:
/* Restore old stack. */
lw $sp, old_sp
/* Return to the original context. */
eret

86
payloads/libpayload/arch/mips/libpayload.ldscript
View File

@ -1,86 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* Based on src/arch/arm/ramstage.ld:
* Written by Johan Rydberg, based on work by Daniel Kahlin.
* Rewritten by Eric Biederman
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; version 2 of
* the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
OUTPUT_ARCH(mips)
ENTRY(_entry)
SECTIONS
{
. = CONFIG_LP_BASE_ADDRESS;
. = ALIGN(16);
_start = .;
.text : {
*(.text._entry)
*(.text)
*(.text.*)
}
.rodata : {
*(.rodata)
*(.rodata.*)
}
.data : {
*(.data)
*(.data.*)
}
_edata = .;
.sdata : {
*(.srodata)
*(.sdata)
}
_bss = .;
.bss : {
*(.sbss)
*(.sbss.*)
*(.bss)
*(.bss.*)
*(COMMON)
/* Stack and heap */
. = ALIGN(16);
_heap = .;
. += CONFIG_LP_HEAP_SIZE;
. = ALIGN(16);
_eheap = .;
_estack = .;
. += CONFIG_LP_STACK_SIZE;
. = ALIGN(16);
_stack = .;
}
_ebss = .;
_end = .;
/DISCARD/ : {
*(.comment)
*(.note*)
*(.reginfo)
}
}

58
payloads/libpayload/arch/mips/main.c
View File

@ -1,58 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <exception.h>
#include <libpayload.h>
/* The argc value to pass to main() */
int main_argc;
/* The argv value to pass to main() */
char *main_argv[MAX_ARGC_COUNT];
/*
* This is our C entry function - set up the system
* and jump into the payload entry point.
*/
void start_main(void);
void start_main(void)
{
extern int main(int argc, char **argv);
/* Gather system information. */
lib_get_sysinfo();
/* Optionally set up the consoles. */
#if !CONFIG(LP_SKIP_CONSOLE_INIT)
console_init();
#endif
exception_init();
/*
* Any other system init that has to happen before the
* user gets control goes here
*/
/*
* Go to the entry point.
* In the future we may care about the return value.
*/
(void) main(main_argc, (main_argc != 0) ? main_argv : NULL);
/*
* Returning here will go to the _leave function to return
* us to the original context.
*/
}

36
payloads/libpayload/arch/mips/selfboot.c
View File

@ -1,36 +0,0 @@
/*
* Copyright 2014 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <libpayload.h>
extern void *cb_header_ptr;
void selfboot(void *entry)
{
void (*entry_func)(void *) = entry;
entry_func(cb_header_ptr);
}

77
payloads/libpayload/arch/mips/string.c
View File

@ -1,77 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <stdint.h>
#include "string.h"
/*
* Alternative string functions to the default ones are added
* because there is no guarantee that the provided source and
* destination addresses are properly aligned;
* The default string functions work with multiple of 4 bytes
* (sizeof(unsinged long)); MIPS will use LW/SW instructions
* for these operations and if the source and destination
* addresses are not aligned it will trigger an exception.
*/
void *memcpy(void *dest, const void *src, size_t n)
{
u8 *ptr_d = dest;
const u8 *ptr_s = src;
size_t i;
for (i = 0; i < n; i++)
*ptr_d++ = *ptr_s++;
return dest;
}
void *memmove(void *dest, const void *src, size_t n)
{
if ((src < dest) && (dest - src < n)) {
u8 *ptr_d = dest;
const u8 *ptr_s = src;
/* copy backwards */
while (n--)
ptr_d[n] = ptr_s[n];
return dest;
}
/* copy forwards */
return memcpy(dest, src, n);
}
void *memset(void *s, int c, size_t n)
{
u8 *ptr = s;
size_t i;
for (i = 0; i < n; i++)
*ptr++ = c;
return s;
}
int memcmp(const void *s1, const void *s2, size_t n)
{
size_t i;
for (i = 0; i < n; i++)
if (((u8 *)s1)[i] != ((u8 *)s2)[i])
return ((u8 *)s1)[i] - ((u8 *)s2)[i];
return 0;
}

49
payloads/libpayload/arch/mips/sysinfo.c
View File

@ -1,49 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <libpayload-config.h>
#include <libpayload.h>
#include <coreboot_tables.h>
#include <multiboot_tables.h>
/*
* This is a global structure that is used through the library - we set it
* up initially with some dummy values - hopefully they will be overridden.
*/
struct sysinfo_t lib_sysinfo = {
.cpu_khz = 200,
};
int lib_get_sysinfo(void)
{
int ret;
/* Get the CPU speed (for delays). */
lib_sysinfo.cpu_khz = get_cpu_speed();
/* Get information from the coreboot tables,
* if they exist */
ret = get_coreboot_info(&lib_sysinfo);
/* If we can't get a good memory range, use the default. */
if (!lib_sysinfo.n_memranges) {
lib_sysinfo.n_memranges = 1;
lib_sysinfo.memrange[0].base = 0;
lib_sysinfo.memrange[0].size = 1024 * 1024;
lib_sysinfo.memrange[0].type = CB_MEM_RAM;
}
return ret;
}

52
payloads/libpayload/arch/mips/timer.c
View File

@ -1,52 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <libpayload.h>
#include <arch/cpu.h>
#include <arch/io.h>
#define PISTACHIO_CLOCK_SWITCH 0xB8144200
#define MIPS_EXTERN_PLL_BYPASS_MASK 0x00000002
/**
* @ingroup arch
* Global variable containing the speed of the processor in KHz.
*/
u32 cpu_khz;
/**
* Calculate the speed of the processor for use in delays.
*
* @return The CPU speed in kHz.
*/
unsigned int get_cpu_speed(void)
{
if (IMG_PLATFORM_ID() != IMG_PLATFORM_ID_SILICON)
cpu_khz = 50000; /* FPGA board */
else {
/* If MIPS PLL external bypass bit is set, it means
* that the MIPS PLL is already set up to work at a
* frequency of 550 MHz; otherwise, the crystal is
* used with a frequency of 52 MHz
*/
if (read32(PISTACHIO_CLOCK_SWITCH) &
MIPS_EXTERN_PLL_BYPASS_MASK)
cpu_khz = 550000;
else
cpu_khz = 52000;
}
return cpu_khz;
}

22
payloads/libpayload/arch/mips/util.S
View File

@ -1,22 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
.global halt
.text
.align 4
.type halt, function
halt:
j halt
nop

10
payloads/libpayload/bin/lpgcc
View File

@ -80,12 +80,6 @@ if [ "$CONFIG_LP_ARCH_ARM64" = "y" ]; then
_ARCHEXTRA="" _ARCHEXTRA=""
_ARCH=arm64 _ARCH=arm64
fi fi
if [ "$CONFIG_LP_ARCH_MIPS" = "y" ]; then
_ARCHINCDIR=$_INCDIR/mips
_ARCHLIBDIR=$_LIBDIR/mips
_ARCHEXTRA=""
_ARCH=mips
fi
if [ "$CONFIG_LP_ARCH_X86" = "y" ]; then if [ "$CONFIG_LP_ARCH_X86" = "y" ]; then
_ARCHINCDIR=$_INCDIR/x86 _ARCHINCDIR=$_INCDIR/x86
_ARCHLIBDIR=$_LIBDIR/x86 _ARCHLIBDIR=$_LIBDIR/x86
@ -170,9 +164,7 @@ if [ $DOLINK -eq 0 ]; then
$DEFAULT_CC $CMDLINE $_CFLAGS $DEFAULT_CC $CMDLINE $_CFLAGS
else else
if [ -z "${CONFIG_LP_ARCH_MIPS}" ]; then _LIBGCC=`$DEFAULT_CC $_ARCHEXTRA -print-libgcc-file-name`
_LIBGCC=`$DEFAULT_CC $_ARCHEXTRA -print-libgcc-file-name`
fi
if [ -f $_ARCHLIBDIR/head.o ]; then if [ -f $_ARCHLIBDIR/head.o ]; then
HEAD_O=$_ARCHLIBDIR/head.o HEAD_O=$_ARCHLIBDIR/head.o
elif [ -f $BASE/../build/head.o ]; then elif [ -f $BASE/../build/head.o ]; then

6
payloads/libpayload/configs/defconfig-mips
View File

@ -1,6 +0,0 @@
CONFIG_LP_ARCH_MIPS=y
CONFIG_LP_COREBOOT_VIDEO_CONSOLE=y
CONFIG_LP_PC_KEYBOARD=y
CONFIG_LP_TIMER_IMG_PISTACHIO=y
# CONFIG_LP_USB_EHCI is not set
# CONFIG_LP_USB_XHCI is not set

38
payloads/libpayload/drivers/timer/img_pistachio.c
View File

@ -1,38 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <libpayload.h>
#include <arch/cpu.h>
uint64_t timer_hz(void)
{
return (uint64_t)lib_sysinfo.cpu_khz * 1000;
}
uint64_t timer_raw_value(void)
{
static uint64_t total_ticks = 0;
uint8_t overflow = 0;
uint32_t current_ticks = read_c0_count() * 2;
/* It assumes only one overflow happened since the last call */
if (current_ticks <= (uint32_t)total_ticks)
overflow = 1;
/* The least significant part(32 bits) of total_ticks will always
* become equal to current ticks */
total_ticks = (((total_ticks >> 32) + overflow) << 32) +
current_ticks;
return total_ticks;
}

39
payloads/libpayload/include/mips/arch/byteorder.h
View File

@ -1,39 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __MIPS_ARCH_BYTEORDER_H__
#define __MIPS_ARCH_BYTEORDER_H__
#include <stdint.h>
#include <swab.h>
#ifndef __ORDER_LITTLE_ENDIAN__
#error "What endian are you!?"
#endif
#define cpu_to_le64(x) ((uint64_t)(x))
#define le64_to_cpu(x) ((uint64_t)(x))
#define cpu_to_le32(x) ((uint32_t)(x))
#define le32_to_cpu(x) ((uint32_t)(x))
#define cpu_to_le16(x) ((uint16_t)(x))
#define le16_to_cpu(x) ((uint16_t)(x))
#define cpu_to_be64(x) swab64(x)
#define be64_to_cpu(x) swab64(x)
#define cpu_to_be32(x) swab32((x))
#define be32_to_cpu(x) swab32((x))
#define cpu_to_be16(x) swab16((x))
#define be16_to_cpu(x) swab16((x))
#endif /* __MIPS_ARCH_BYTEORDER_H__ */

94
payloads/libpayload/include/mips/arch/cache.h
View File

@ -1,94 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __MIPS_ARCH_CACHE_H__
#define __MIPS_ARCH_CACHE_H__
#include <stddef.h>
#include <stdint.h>
/*
* Sync primitives
*/
/* data memory barrier */
static inline void dmb(void)
{
/* TODO */
}
/* data sync barrier */
static inline void dsb(void)
{
/* TODO */
}
/* instruction sync barrier */
static inline void isb(void)
{
/* TODO */
}
/*
* Cache maintenance API
*/
/* dcache clean and invalidate all */
void dcache_clean_invalidate_all(void);
/* dcache clean all */
void dcache_clean_all(void);
/* dcache invalidate all (on current level given by CCSELR) */
void dcache_invalidate_all(void);
/* returns number of bytes per cache line */
unsigned int dcache_line_bytes(void);
/* dcache and MMU disable */
void dcache_mmu_disable(void);
/* dcache and MMU enable */
void dcache_mmu_enable(void);
/* perform all icache/dcache maintenance needed after loading new code */
void cache_sync_instructions(void);
/* tlb invalidate all */
void tlb_invalidate_all(void);
/*
* Generalized setup/init functions
*/
/* mmu initialization (set page table address, set permissions, etc) */
void mmu_init(void);
enum dcache_policy {
DCACHE_OFF,
DCACHE_WRITEBACK,
DCACHE_WRITETHROUGH,
};
/* disable the mmu for a range. Primarily useful to lock out address 0. */
void mmu_disable_range(unsigned long start_mb, unsigned long size_mb);
/* mmu range configuration (set dcache policy) */
void mmu_config_range(unsigned long start_mb, unsigned long size_mb,
enum dcache_policy policy);
#endif /* __MIPS_ARCH_CACHE_H__ */

92
payloads/libpayload/include/mips/arch/cpu.h
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@ -1,92 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; version 2 of
* the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#ifndef __MIPS_ARCH_CPU_H__
#define __MIPS_ARCH_CPU_H__
/*
* Reading at this address allows to identify the platform the code is running
* on
*/
/*
* This register holds the FPGA image version
* If we're not working on the FPGA this will be 0
*/
#define PRIMARY_FPGA_VERSION 0xB8149060
#define IMG_PLATFORM_ID() read32(PRIMARY_FPGA_VERSION)
#define IMG_PLATFORM_ID_FPGA 0xD1400003 /* Last FPGA image */
#define IMG_PLATFORM_ID_SILICON 0
#define CP0_COUNT 9
#define CP0_COMPARE 11
#define CP0_STATUS 12
#define CP0_CAUSE 13
#define CP0_WATCHLO 18
#define CP0_WATCHHI 19
/* coprocessor 0 enable */
#define ST0_CU0 (1 << 28)
#define C0_CAUSE_DC (1 << 27)
/***************************************************************************
* The following section was copied from arch/mips/include/asm/mipsregs.h in
* the 3.14 kernel tree.
*/
/*
* Macros to access the system control coprocessor
*/
#define __read_32bit_c0_register(source, sel) \
({ int __res; \
if (sel == 0) \
__asm__ __volatile__( \
"mfc0\t%0, " #source "\n\t" \
: "=r" (__res)); \
else \
__asm__ __volatile__( \
".set\tmips32\n\t" \
"mfc0\t%0, " #source ", " #sel "\n\t" \
".set\tmips0\n\t" \
: "=r" (__res)); \
__res; \
})
#define __write_32bit_c0_register(register, sel, value) \
do { \
if (sel == 0) \
__asm__ __volatile__( \
"mtc0\t%z0, " #register "\n\t" \
: : "Jr" ((unsigned int)(value))); \
else \
__asm__ __volatile__( \
".set\tmips32\n\t" \
"mtc0\t%z0, " #register ", " #sel "\n\t" \
".set\tmips0" \
: : "Jr" ((unsigned int)(value))); \
} while (0)
/* Shortcuts to access various internal registers, keep adding as needed. */
#define read_c0_count() __read_32bit_c0_register($9, 0)
#define write_c0_count(val) __write_32bit_c0_register($9, 0, (val))
#define read_c0_cause() __read_32bit_c0_register($13, 0)
#define write_c0_cause(val) __write_32bit_c0_register($13, 0, (val))
/***************************************************************************/
#endif /* __MIPS_ARCH_CPU_H__ */

86
payloads/libpayload/include/mips/arch/exception.h
View File

@ -1,86 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __MIPS_ARCH_EXCEPTION_H__
#define __MIPS_ARCH_EXCEPTION_H__
#include <stdint.h>
void exception_init_asm(void);
void exception_dispatch(void);
struct exception_state_t {
struct {
/* Always 0: just to keep the series complete */
u32 zero;
/* Reserved for the assembler */
/* TODO: is this actually needed here? */
u32 at;
/* v0-v1: expression evaluation */
u32 v0;
u32 v1;
/* a0-a3: Arguments */
u32 a0;
u32 a1;
u32 a2;
u32 a3;
/* t0-t3: Temporary registers for expression evaluation */
u32 t0;
u32 t1;
u32 t2;
u32 t3;
u32 t4;
u32 t5;
u32 t6;
u32 t7;
/* s0-s7: Saved registers */
u32 s0;
u32 s1;
u32 s2;
u32 s3;
u32 s4;
u32 s5;
u32 s6;
u32 s7;
/* t8-t9: Temporary registers for expression evaluation */
u32 t8;
u32 t9;
/* k0-k1: reserved for SO kernel */
u32 k0;
u32 k1;
/* Global pointer */
u32 gp;
/* Stack pointer */
u32 sp;
/* Frame pointer */
u32 fp;
/* Return address */
u32 ra;
} regs;
u32 vector;
} __packed;
extern struct exception_state_t *exception_state_ptr;
extern u32 *exception_stack_end;
enum {
EXC_CACHE_ERROR = 0,
EXC_TLB_REFILL_AND_ALL = 1,
EXC_INTERRUPT = 2,
EXC_EJTAG_DEBUG = 3,
EXC_COUNT
};
#endif /* __MIPS_ARCH_EXCEPTION_H__ */

63
payloads/libpayload/include/mips/arch/io.h
View File

@ -1,63 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* Based on arch/armv7/include/arch/io.h:
* Copyright 2013 Google Inc.
* Copyright (C) 1996-2000 Russell King
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __MIPS_ARCH_IO_H__
#define __MIPS_ARCH_IO_H__
#include <arch/types.h>
#include <arch/cache.h>
#include <arch/byteorder.h>
#define read8(a) (*(volatile uint8_t *) (a))
#define read16(a) (*(volatile uint16_t *) (a))
#define read32(a) (*(volatile uint32_t *) (a))
#define write8(v, a) (*(volatile uint8_t *) (a) = (v))
#define write16(v, a) (*(volatile uint16_t *) (a) = (v))
#define write32(v, a) (*(volatile uint32_t *) (a) = (v))
/*
* Clear and set bits in one shot. These macros can be used to clear and
* set multiple bits in a register using a single call. These macros can
* also be used to set a multiple-bit bit pattern using a mask, by
* specifying the mask in the 'clear' parameter and the new bit pattern
* in the 'set' parameter.
*/
#define out_arch(type, endian, a, v) write##type(cpu_to_##endian(v), a)
#define in_arch(type, endian, a) endian##_to_cpu(read##type(a))
#define readb(a) read8(a)
#define readw(a) read16(a)
#define readl(a) read32(a)
#define inb(a) read8(a)
#define inw(a) read16(a)
#define inl(a) read32(a)
#define writeb(v, a) write8(v, a)
#define writew(v, a) write16(v, a)
#define writel(v, a) write32(v, a)
#define outb(v, a) write8(v, a)
#define outw(v, a) write16(v, a)
#define outl(v, a) write32(v, a)
#endif /* __MIPS_ARCH_IO_H__ */

91
payloads/libpayload/include/mips/arch/stdint.h
View File

@ -1,91 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Based on src/arch/armv7/include/stdint.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __MIPS_STDINT_H__
#define __MIPS_STDINT_H__
#if defined(__GNUC__)
#define __HAVE_LONG_LONG__ 1
#else
#define __HAVE_LONG_LONG__ 0
#endif
/* Exact integral types */
typedef unsigned char uint8_t;
typedef signed char int8_t;
typedef unsigned short uint16_t;
typedef signed short int16_t;
typedef unsigned int uint32_t;
typedef signed int int32_t;
#if __HAVE_LONG_LONG__
typedef unsigned long long uint64_t;
typedef signed long long int64_t;
#endif
/* Small types */
typedef unsigned char uint_least8_t;
typedef signed char int_least8_t;
typedef unsigned short uint_least16_t;
typedef signed short int_least16_t;
typedef unsigned int uint_least32_t;
typedef signed int int_least32_t;
#if __HAVE_LONG_LONG__
typedef unsigned long long uint_least64_t;
typedef signed long long int_least64_t;
#endif
/* Fast Types */
typedef unsigned char uint_fast8_t;
typedef signed char int_fast8_t;
typedef unsigned int uint_fast16_t;
typedef signed int int_fast16_t;
typedef unsigned int uint_fast32_t;
typedef signed int int_fast32_t;
#if __HAVE_LONG_LONG__
typedef unsigned long long uint_fast64_t;
typedef signed long long int_fast64_t;
#endif
/* Largest integral types */
#if __HAVE_LONG_LONG__
typedef long long int intmax_t;
typedef unsigned long long uintmax_t;
#else
typedef long int intmax_t;
typedef unsigned long int uintmax_t;
#endif
typedef uint8_t u8;
typedef uint16_t u16;
typedef uint32_t u32;
#if __HAVE_LONG_LONG__
typedef uint64_t u64;
#endif
typedef int8_t s8;
typedef int16_t s16;
typedef int32_t s32;
#undef __HAVE_LONG_LONG__
#endif /* __MIPS_STDINT_H__ */

72
payloads/libpayload/include/mips/arch/types.h
View File

@ -1,72 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* Based on src/arch/armv7/include/arch/types.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __MIPS_ARCH_TYPES_H
#define __MIPS_ARCH_TYPES_H
#include <arch/stdint.h>
typedef unsigned short umode_t;
/*
* __xx is ok: it doesn't pollute the POSIX namespace. Use these in the
* header files exported to user space
*/
typedef __signed__ char __s8;
typedef unsigned char __u8;
typedef __signed__ short __s16;
typedef unsigned short __u16;
typedef __signed__ int __s32;
typedef unsigned int __u32;
#if defined(__GNUC__)
__extension__ typedef __signed__ long long __s64;
__extension__ typedef unsigned long long __u64;
#endif
typedef signed char s8;
typedef unsigned char u8;
typedef signed short s16;
typedef unsigned short u16;
typedef signed int s32;
typedef unsigned int u32;
typedef signed long long s64;
typedef unsigned long long u64;
#define BITS_PER_LONG 32
/* Dma addresses are 32-bits wide. */
typedef u32 dma_addr_t;
typedef unsigned long phys_addr_t;
typedef unsigned long phys_size_t;
typedef long time_t;
typedef long suseconds_t;
#ifndef NULL
#define NULL ((void *)0)
#endif
#endif /* __MIPS_ARCH_TYPES_H */

34
payloads/libpayload/include/mips/arch/virtual.h
View File

@ -1,34 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __MIPS_ARCH_VIRTUAL_H
#define __MIPS_ARCH_VIRTUAL_H
#define KSEG0_BASE 0x80000000
#define KSEG1_BASE 0xA0000000
#define kseg0_to_phys(virt) ((unsigned long)(virt) - KSEG0_BASE)
#define phys_to_kseg0(phys) ((void *)((unsigned long)(phys) + KSEG0_BASE))
#define kseg1_to_phys(virt) ((unsigned long)(virt) - KSEG1_BASE)
#define phys_to_kseg1(phys) ((void *)((unsigned long)(phys) + KSEG1_BASE))
#define virt_to_phys(virt) ((unsigned long)(virt))
#define phys_to_virt(phys) ((void *)(unsigned long)(phys))
#define virt_to_bus(virt) kseg1_to_phys(virt)
#define bus_to_virt(phys) phys_to_kseg1(phys)
#endif

141
payloads/libpayload/libc/64bit_div.c
View File

@ -1,141 +0,0 @@
/*
* This file is part of the libpayload project.
*
* Copyright 2014 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <libpayload-config.h>
#include <stdlib.h>
#if !CONFIG(LP_LITTLE_ENDIAN)
#error this code is for little endian only
#endif
union overlay64 {
uint64_t longw;
struct {
uint32_t lower;
uint32_t higher;
} words;
};
uint64_t __ashldi3(uint64_t num, unsigned shift)
{
union overlay64 output;
output.longw = num;
if (shift >= 32) {
output.words.higher = output.words.lower << (shift - 32);
output.words.lower = 0;
} else {
if (!shift)
return num;
output.words.higher = (output.words.higher << shift) |
(output.words.lower >> (32 - shift));
output.words.lower = output.words.lower << shift;
}
return output.longw;
}
uint64_t __lshrdi3(uint64_t num, unsigned shift)
{
union overlay64 output;
output.longw = num;
if (shift >= 32) {
output.words.lower = output.words.higher >> (shift - 32);
output.words.higher = 0;
} else {
if (!shift)
return num;
output.words.lower = output.words.lower >> shift |
(output.words.higher << (32 - shift));
output.words.higher = output.words.higher >> shift;
}
return output.longw;
}
#define MAX_32BIT_UINT ((((uint64_t)1) << 32) - 1)
static uint64_t _64bit_divide(uint64_t dividend,
uint64_t divider, uint64_t *rem_p)
{
uint64_t result = 0;
/*
* If divider is zero - let the rest of the system care about the
* exception.
*/
if (!divider)
return 1/(uint32_t)divider;
/* As an optimization, let's not use 64 bit division unless we must. */
if (dividend <= MAX_32BIT_UINT) {
if (divider > MAX_32BIT_UINT) {
result = 0;
if (rem_p)
*rem_p = divider;
} else {
result = (uint32_t) dividend / (uint32_t) divider;
if (rem_p)
*rem_p = (uint32_t) dividend %
(uint32_t) divider;
}
return result;
}
while (divider <= dividend) {
uint64_t locald = divider;
uint64_t limit = __lshrdi3(dividend, 1);
int shifts = 0;
while (locald <= limit) {
shifts++;
locald = locald + locald;
}
result |= __ashldi3(1, shifts);
dividend -= locald;
}
if (rem_p)
*rem_p = dividend;
return result;
}
uint64_t __udivdi3(uint64_t num, uint64_t den)
{
return _64bit_divide(num, den, NULL);
}
uint64_t __umoddi3(uint64_t num, uint64_t den)
{
uint64_t v = 0;
_64bit_divide(num, den, &v);
return v;
}

4
payloads/libpayload/libc/Makefile.inc
View File

@ -39,7 +39,3 @@ libc-$(CONFIG_LP_LIBC) += hexdump.c
libc-$(CONFIG_LP_LIBC) += die.c libc-$(CONFIG_LP_LIBC) += die.c
libc-$(CONFIG_LP_LIBC) += coreboot.c libc-$(CONFIG_LP_LIBC) += coreboot.c
libc-$(CONFIG_LP_LIBC) += fmap.c libc-$(CONFIG_LP_LIBC) += fmap.c
ifeq ($(CONFIG_LP_ARCH_MIPS),y)
libc-$(CONFIG_LP_LIBC) += 64bit_div.c
endif

1
payloads/libpayload/sample/Makefile
View File

@ -34,7 +34,6 @@ include ../.xcompile
ARCH-$(CONFIG_LP_ARCH_ARM) := arm ARCH-$(CONFIG_LP_ARCH_ARM) := arm
ARCH-$(CONFIG_LP_ARCH_X86) := x86_32 ARCH-$(CONFIG_LP_ARCH_X86) := x86_32
ARCH-$(CONFIG_LP_ARCH_ARM64) := arm64 ARCH-$(CONFIG_LP_ARCH_ARM64) := arm64
ARCH-$(CONFIG_LP_ARCH_MIPS) := mips
CC := $(CC_$(ARCH-y)) CC := $(CC_$(ARCH-y))
AS := $(AS_$(ARCH-y)) AS := $(AS_$(ARCH-y))

38
src/arch/mips/Kconfig
View File

@ -1,38 +0,0 @@
#
# This file is part of the coreboot project.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; version 2 of
# the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
config ARCH_MIPS
bool
if ARCH_MIPS
config ARCH_BOOTBLOCK_MIPS
bool
default n
select BOOTBLOCK_CUSTOM
select C_ENVIRONMENT_BOOTBLOCK
config ARCH_VERSTAGE_MIPS
bool
default n
config ARCH_ROMSTAGE_MIPS
bool
default n
config ARCH_RAMSTAGE_MIPS
bool
default n
endif # if ARCH_MIPS

93
src/arch/mips/Makefile.inc
View File

@ -1,93 +0,0 @@
#
# This file is part of the coreboot project.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; version 2 of
# the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
###############################################################################
# MIPS specific options
###############################################################################
ifeq ($(CONFIG_ARCH_RAMSTAGE_MIPS),y)
check-ramstage-overlap-regions += stack
endif
###############################################################################
# bootblock
###############################################################################
ifeq ($(CONFIG_ARCH_BOOTBLOCK_MIPS),y)
bootblock-y += boot.c
bootblock-y += bootblock.S
bootblock-y += bootblock_simple.c
bootblock-y += cache.c
bootblock-y += mmu.c
bootblock-y += stages.c
bootblock-y += ../../lib/memcpy.c
bootblock-y += ../../lib/memmove.c
bootblock-y += ../../lib/memset.c
# Much of the assembly code is generated by the compiler, and may contain
# terms which the preprocessor will happily go on to replace. For example
# "mips" would be replaced with "1". Clear all the built in definitions to
# prevent that.
bootblock-S-ccopts += -undef
$(objcbfs)/bootblock.debug: $$(bootblock-objs) $(obj)/config.h
@printf " LINK $(subst $(obj)/,,$(@))\n"
$(LD_bootblock) $(LDFLAGS_bootblock) -o $@ -L$(obj) -T $(call src-to-obj,bootblock,src/mainboard/$(MAINBOARDDIR)/memlayout.ld) --whole-archive --start-group $(filter-out %.ld,$(bootblock-objs)) --end-group
endif # CONFIG_ARCH_BOOTBLOCK_MIPS
###############################################################################
# romstage
###############################################################################
ifeq ($(CONFIG_ARCH_ROMSTAGE_MIPS),y)
romstage-y += boot.c
romstage-y += cache.c
romstage-y += mmu.c
romstage-y += stages.c
romstage-y += ../../lib/memcpy.c
romstage-y += ../../lib/memmove.c
romstage-y += ../../lib/memset.c
$(objcbfs)/romstage.debug: $$(romstage-objs)
@printf " LINK $(subst $(obj)/,,$(@))\n"
$(LD_romstage) $(LDFLAGS_romstage) -o $@ -L$(obj) -T $(call src-to-obj,romstage,src/mainboard/$(MAINBOARDDIR)/memlayout.ld) --whole-archive --start-group $(filter-out %.ld,$(romstage-objs)) --end-group
endif # CONFIG_ARCH_ROMSTAGE_MIPS
###############################################################################
# ramstage
###############################################################################
ifeq ($(CONFIG_ARCH_RAMSTAGE_MIPS),y)
ramstage-y += ashldi3.c
ramstage-y += boot.c
ramstage-y += cache.c
ramstage-y += mmu.c
ramstage-y += stages.c
ramstage-y += tables.c
ramstage-y += ../../lib/memcpy.c
ramstage-y += ../../lib/memmove.c
ramstage-y += ../../lib/memset.c
ramstage-srcs += $(wildcard src/mainboard/$(MAINBOARDDIR)/mainboard.c)
$(objcbfs)/ramstage.debug: $$(ramstage-objs)
@printf " CC $(subst $(obj)/,,$(@))\n"
$(LD_ramstage) $(LDFLAGS_ramstage) -o $@ -L$(obj) -T $(call src-to-obj,ramstage,src/mainboard/$(MAINBOARDDIR)/memlayout.ld) --whole-archive --start-group $(filter-out %.ld,$(ramstage-objs)) --end-group
endif # CONFIG_ARCH_RAMSTAGE_MIPS

53
src/arch/mips/ashldi3.c
View File

@ -1,53 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* Based on linux arch/mips/lib/ashldi3.c
*/
#ifndef __ORDER_LITTLE_ENDIAN__
#errror "What endian are you!?"
#endif
typedef unsigned int word_type;
long long __ashldi3(long long u, word_type b);
struct DWstruct {
int low, high;
};
typedef union {
struct DWstruct s;
long long ll;
} DWunion;
long long __ashldi3(long long u, word_type b)
{
DWunion uu, w;
word_type bm;
if (b == 0)
return u;
uu.ll = u;
bm = 32 - b;
if (bm <= 0) {
w.s.low = 0;
w.s.high = (unsigned int) uu.s.low << -bm;
} else {
const unsigned int carries = (unsigned int) uu.s.low >> bm;
w.s.low = (unsigned int) uu.s.low << b;
w.s.high = ((unsigned int) uu.s.high << b) | carries;
}
return w.ll;
}

23
src/arch/mips/boot.c
View File

@ -1,23 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <arch/stages.h>
#include <program_loading.h>
void arch_prog_run(struct prog *prog)
{
void *cb_tables = prog_entry_arg(prog);
void (*doit)(void *) = prog_entry(prog);
doit(cb_tables);
}

42
src/arch/mips/bootblock.S
View File

@ -1,42 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
.set noreorder /* Prevent assembler from "optimizing" this code. */
.section ".text._start", "ax", %progbits
.globl _start
_start:
/* Set the stack pointer */
la $sp, _estack
/*
* Initialise the stack to a known value, used later to check for
* overflow.
*/
la $t0, _stack
addi $t1, $sp, -4
li $t2, 0xdeadbeef
1: sw $t2, 0($t0)
bne $t0, $t1, 1b
addi $t0, $t0, 4
/* Run main */
b mips_main
/*
* Should never return from main. Make sure there is no branch in the
* branch delay slot.
*/
2: nop
b 2b
nop /* Make sure there is no branch after this either. */

42
src/arch/mips/bootblock_simple.c
View File

@ -1,42 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; version 2 of
* the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <arch/bootblock_common.h>
#include <console/console.h>
#include <halt.h>
#include <program_loading.h>
/* called from assembly in bootblock.S */
void mips_main(void);
void mips_main(void)
{
bootblock_cpu_init();
/* Mainboard basic init */
bootblock_mainboard_init();
#if CONFIG(BOOTBLOCK_CONSOLE)
console_init();
#endif
bootblock_mmu_init();
if (init_extra_hardware())
printk(BIOS_ERR, "bootblock_simple: failed to init HW.\n");
else
run_romstage();
halt();
}

114
src/arch/mips/cache.c
View File

@ -1,114 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <arch/cache.h>
#include <arch/cpu.h>
#include <console/console.h>
#include <program_loading.h>
#include <symbols.h>
/* cache_op: issues cache operation for specified address */
#define cache_op(op, addr) \
({ \
__asm__ __volatile__( \
".set push\n\t" \
".set noreorder\n\t" \
".set mips32\n\t" \
"cache %0, %1\n\t" \
".set mips0\n\t" \
".set pop\n\t" \
: \
: "i" (op), "R" (*(unsigned char *)(addr))); \
})
#define MIPS_CONFIG1_DL_SHIFT 10
#define MIPS_CONFIG1_DL_MASK (0x00000007)
#define MIPS_CONFIG1_IL_SHIFT 19
#define MIPS_CONFIG1_IL_MASK (0x00000007)
#define MIPS_CONFIG2_SL_SHIFT 4
#define MIPS_CONFIG2_SL_MASK (0x0000000F)
/*
* get_cache_line_size:
* Read config register
* Isolate instruction cache line size
* Interpret value as per MIPS manual: 2 << value
* Return cache line size
*/
static int get_cache_line_size(uint8_t type)
{
switch (type) {
case ICACHE:
return 2 << ((read_c0_config1() >> MIPS_CONFIG1_IL_SHIFT) &
MIPS_CONFIG1_IL_MASK);
case DCACHE:
return 2 << ((read_c0_config1() >> MIPS_CONFIG1_DL_SHIFT) &
MIPS_CONFIG1_DL_MASK);
case L2CACHE:
return 2 << ((read_c0_config2() >> MIPS_CONFIG2_SL_SHIFT) &
MIPS_CONFIG2_SL_MASK);
default:
printk(BIOS_ERR, "%s: Error: unsupported cache type.\n",
__func__);
return 0;
}
return 0;
}
void perform_cache_operation(uintptr_t start, size_t size, uint8_t operation)
{
u32 line_size, line_mask;
uintptr_t end;
line_size = get_cache_line_size((operation >> CACHE_TYPE_SHIFT) &
CACHE_TYPE_MASK);
if (!line_size)
return;
line_mask = ~(line_size-1);
end = (start + (line_size - 1) + size) & line_mask;
start &= line_mask;
if ((operation & L2CACHE) == L2CACHE)
write_c0_l23taglo(0);
while (start < end) {
switch (operation) {
case CACHE_CODE(ICACHE, WB_INVD):
cache_op(CACHE_CODE(ICACHE, WB_INVD), start);
break;
case CACHE_CODE(DCACHE, WB_INVD):
cache_op(CACHE_CODE(DCACHE, WB_INVD), start);
break;
case CACHE_CODE(L2CACHE, WB_INVD):
cache_op(CACHE_CODE(L2CACHE, WB_INVD), start);
break;
default:
return;
}
start += line_size;
}
asm("sync");
}
void cache_invalidate_all(uintptr_t start, size_t size)
{
perform_cache_operation(start, size, CACHE_CODE(ICACHE, WB_INVD));
perform_cache_operation(start, size, CACHE_CODE(DCACHE, WB_INVD));
perform_cache_operation(start, size, CACHE_CODE(L2CACHE, WB_INVD));
}
void arch_segment_loaded(uintptr_t start, size_t size, int flags)
{
cache_invalidate_all(start, size);
if (flags & SEG_FINAL)
cache_invalidate_all((uintptr_t)_cbfs_cache,
REGION_SIZE(cbfs_cache));
}

24
src/arch/mips/include/arch/bootblock_common.h
View File

@ -1,24 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifdef CONFIG_BOOTBLOCK_CPU_INIT
#include CONFIG_BOOTBLOCK_CPU_INIT
#endif
#ifdef CONFIG_BOOTBLOCK_MAINBOARD_INIT
#include CONFIG_BOOTBLOCK_MAINBOARD_INIT
#else
static void bootblock_mainboard_init(void)
{
}
#endif

23
src/arch/mips/include/arch/byteorder.h
View File

@ -1,23 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __MIPS_ARCH_BYTEORDER_H
#define __MIPS_ARCH_BYTEORDER_H
#ifndef __ORDER_LITTLE_ENDIAN__
#errror "What endian are you!?"
#endif
#define __LITTLE_ENDIAN 1234
#endif /* __MIPS_ARCH_BYTEORDER_H */

48
src/arch/mips/include/arch/cache.h
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@ -1,48 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __MIPS_ARCH_CACHE_H
#define __MIPS_ARCH_CACHE_H
#include <stddef.h>
#include <stdint.h>
#define CACHE_TYPE_SHIFT (0)
#define CACHE_OP_SHIFT (2)
#define CACHE_TYPE_MASK (0x3)
#define CACHE_OP_MASK (0x7)
/* Cache type */
#define ICACHE 0x00
#define DCACHE 0x01
#define L2CACHE 0x03
/* Cache operation*/
#define WB_INVD 0x05
#define CACHE_CODE(type, op) ((((type) & (CACHE_TYPE_MASK)) << \
(CACHE_TYPE_SHIFT)) | \
(((op) & (CACHE_OP_MASK)) << (CACHE_OP_SHIFT)))
/* Perform cache operation on cache lines for target addresses */
void perform_cache_operation(uintptr_t start, size_t size, uint8_t operation);
/* Invalidate all caches: instruction, data, L2 data */
void cache_invalidate_all(uintptr_t start, size_t size);
/* TODO: Global cache API. Implement properly once we finally have a MIPS board
again where we can figure out what exactly these should be doing. */
static inline void dcache_clean_all(void) {}
static inline void dcache_invalidate_all(void) {}
static inline void dcache_clean_invalidate_all(void) {}
#endif /* __MIPS_ARCH_CACHE_H */

26
src/arch/mips/include/arch/cbconfig.h
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@ -1,26 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _ARCH_CBCONFIG_H_
#define _ARCH_CBCONFIG_H_
/*
* Instead of using Kconfig variables for internal coreboot infrastructure
* variables that are architecture dependent land those things in this file.
* If it's not obvious all variables that are used in the common code need
* to have the same name across all architectures.
*/
#define COREBOOT_TABLE_SIZE 0x2000
#endif

172
src/arch/mips/include/arch/cpu.h
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@ -1,172 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __MIPS_ARCH_CPU_H
#define __MIPS_ARCH_CPU_H
#include <device/device.h>
#define asmlinkage
struct cpu_driver {
struct device_operations *ops;
const struct cpu_device_id *id_table;
};
struct thread;
struct cpu_info {
struct device *cpu;
unsigned long index;
};
/***************************************************************************
* The following section was copied from arch/mips/include/asm/mipsregs.h in
* the 3.14 kernel tree.
*/
/*
* Macros to access the system control coprocessor
*/
#define __read_32bit_c0_register(source, sel) \
({ int __res; \
if (sel == 0) \
__asm__ __volatile__( \
"mfc0\t%0, " #source "\n\t" \
: "=r" (__res)); \
else \
__asm__ __volatile__( \
".set\tmips32\n\t" \
"mfc0\t%0, " #source ", " #sel "\n\t" \
".set\tmips0\n\t" \
: "=r" (__res)); \
__res; \
})
#define __write_32bit_c0_register(register, sel, value) \
do { \
if (sel == 0) \
__asm__ __volatile__( \
"mtc0\t%z0, " #register "\n\t" \
: : "Jr" ((unsigned int)(value))); \
else \
__asm__ __volatile__( \
".set\tmips32\n\t" \
"mtc0\t%z0, " #register ", " #sel "\n\t" \
".set\tmips0" \
: : "Jr" ((unsigned int)(value))); \
} while (0)
/* Shortcuts to access various internal registers, keep adding as needed. */
#define read_c0_index() __read_32bit_c0_register($0, 0)
#define write_c0_index(val) __write_32bit_c0_register($0, 0, (val))
#define read_c0_entrylo0() __read_32bit_c0_register($2, 0)
#define write_c0_entrylo0(val) __write_32bit_c0_register($2, 0, (val))
#define read_c0_entrylo1() __read_32bit_c0_register($3, 0)
#define write_c0_entrylo1(val) __write_32bit_c0_register($3, 0, (val))
#define read_c0_pagemask() __read_32bit_c0_register($5, 0)
#define write_c0_pagemask(val) __write_32bit_c0_register($5, 0, (val))
#define read_c0_wired() __read_32bit_c0_register($6, 0)
#define write_c0_wired(val) __write_32bit_c0_register($6, 0, (val))
#define read_c0_count() __read_32bit_c0_register($9, 0)
#define write_c0_count(val) __write_32bit_c0_register($9, 0, (val))
#define read_c0_entryhi() __read_32bit_c0_register($10, 0)
#define write_c0_entryhi(val) __write_32bit_c0_register($10, 0, (val))
#define read_c0_cause() __read_32bit_c0_register($13, 0)
#define write_c0_cause(val) __write_32bit_c0_register($13, 0, (val))
#define read_c0_config1() __read_32bit_c0_register($16, 1)
#define write_c0_config1(val) __write_32bit_c0_register($16, 1, (val))
#define read_c0_config2() __read_32bit_c0_register($16, 2)
#define write_c0_config2(val) __write_32bit_c0_register($16, 2, (val))
#define read_c0_l23taglo() __read_32bit_c0_register($28, 4)
#define write_c0_l23taglo(val) __write_32bit_c0_register($28, 4, (val))
#define C0_ENTRYLO_PFN_SHIFT 6
#define C0_ENTRYLO_COHERENCY_MASK 0x00000038
#define C0_ENTRYLO_COHERENCY_SHIFT 3
/* Cacheable, write-back, non-coherent */
#define C0_ENTRYLO_COHERENCY_WB (0x3 << C0_ENTRYLO_COHERENCY_SHIFT)
/* Uncached, non-coherent */
#define C0_ENTRYLO_COHERENCY_UC (0x2 << C0_ENTRYLO_COHERENCY_SHIFT)
/* Writeable */
#define C0_ENTRYLO_D (0x1 << 2)
/* Valid */
#define C0_ENTRYLO_V (0x1 << 1)
/* Global */
#define C0_ENTRYLO_G (0x1 << 0)
#define C0_PAGEMASK_SHIFT 13
#define C0_PAGEMASK_MASK 0xffff
#define C0_WIRED_MASK 0x3f
#define C0_CAUSE_DC (1 << 27)
#define C0_CONFIG1_MMUSIZE_SHIFT 25
#define C0_CONFIG1_MMUSIZE_MASK 0x3f
/* Hazard handling */
static inline void __nop(void)
{
__asm__ __volatile__("nop");
}
static inline void __ssnop(void)
{
__asm__ __volatile__("sll\t$0, $0, 1");
}
#define mtc0_tlbw_hazard() \
do { \
__nop(); \
__nop(); \
} while (0)
#define tlbw_use_hazard() \
do { \
__nop(); \
__nop(); \
__nop(); \
} while (0)
#define tlb_probe_hazard() \
do { \
__nop(); \
__nop(); \
__nop(); \
} while (0)
#define back_to_back_c0_hazard() \
do { \
__ssnop(); \
__ssnop(); \
__ssnop(); \
} while (0)
/**************************************************************************/
#endif /* __MIPS_ARCH_CPU_H */

27
src/arch/mips/include/arch/early_variables.h
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@ -1,27 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __MIPS_ARCH_EARLY_VARIABLES_H
#define __MIPS_ARCH_EARLY_VARIABLES_H
#define CAR_GLOBAL
#define CAR_MIGRATE(migrate_fn_)
static inline void *car_get_var_ptr(void *var) { return var; }
#define car_get_var(var) (var)
#define car_set_var(var, val) { (var) = (val); }
#define car_get_ptr car_get_var
#define car_set_ptr car_set_var
#endif /* __MIPS_ARCH_EARLY_VARIABLES_H */

19
src/arch/mips/include/arch/exception.h
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@ -1,19 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __MIPS_ARCH_EXCEPTION_H
#define __MIPS_ARCH_EXCEPTION_H
static inline void exception_init(void) {}
#endif /* __MIPS_ARCH_EXCEPTION_H */

26
src/arch/mips/include/arch/header.ld
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@ -1,26 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
/* We use ELF as output format. So that we can debug the code in some form. */
OUTPUT_ARCH(mips)
PHDRS
{
to_load PT_LOAD;
}
#if ENV_BOOTBLOCK
ENTRY(_start)
#else
ENTRY(stage_entry)
#endif

23
src/arch/mips/include/arch/hlt.h
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@ -1,23 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __MIPS_ARCH_HLT_H
#define __MIPS_ARCH_HLT_H
static inline __always_inline void hlt(void)
{
for (;;)
;
}
#endif /* __MIPS_ARCH_HLT_H */

29
src/arch/mips/include/arch/memlayout.h
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@ -1,29 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
/* This file contains macro definitions for memlayout.ld linker scripts. */
#ifndef __ARCH_MEMLAYOUT_H
#define __ARCH_MEMLAYOUT_H
/* MIPS stacks need 8-byte alignment and stay in one place through ramstage. */
/* TODO: Double-check that that's the correct alignment for our ABI. */
#define STACK(addr, size) \
REGION(stack, addr, size, 8) \
_ = ASSERT(size >= 2K, "stack should be >= 2K, see toolchain.inc");
#define DMA_COHERENT(addr, size) REGION(dma_coherent, addr, size, 4K)
#define SOC_REGISTERS(addr, size) REGION(soc_registers, addr, size, 4)
#endif /* __ARCH_MEMLAYOUT_H */

64
src/arch/mips/include/arch/mmio.h
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@ -1,64 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __ARCH_MMIO_H__
#define __ARCH_MMIO_H__
#include <types.h>
#include <arch/cache.h>
#include <endian.h>
static inline uint8_t read8(const volatile void *addr)
{
asm("sync");
return *(volatile uint8_t *)addr;
}
static inline uint16_t read16(const volatile void *addr)
{
asm("sync");
return *(volatile uint16_t *)addr;
}
static inline uint32_t read32(const volatile void *addr)
{
asm("sync");
return *(volatile uint32_t *)addr;
}
static inline void write8(volatile void *addr, uint8_t val)
{
asm("sync");
*(volatile uint8_t *)addr = val;
asm("sync");
}
static inline void write16(volatile void *addr, uint16_t val)
{
asm("sync");
*(volatile uint16_t *)addr = val;
asm("sync");
}
static inline void write32(volatile void *addr, uint32_t val)
{
asm("sync");
*(volatile uint32_t *)addr = val;
asm("sync");
}
/* Fixing soc/imgtech/pistachio seemed painful at the time. */
#define read32_x(addr) read32((void *)(addr))
#define write32_x(addr, val) write32((void *)(addr), (val))
#endif /* __MIPS_ARCH_IO_H */

53
src/arch/mips/include/arch/mmu.h
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@ -1,53 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __MIPS_ARCH_MMU_H
#define __MIPS_ARCH_MMU_H
#include <arch/cpu.h>
#include <stddef.h>
#include <stdint.h>
static inline void tlb_write_indexed(void)
{
__asm__ __volatile__(
".set noreorder\n\t"
"tlbwi\n\t"
".set reorder");
}
static inline uint32_t get_max_pagesize(void)
{
uint32_t max_pgsize;
write_c0_pagemask(C0_PAGEMASK_MASK << C0_PAGEMASK_SHIFT);
back_to_back_c0_hazard();
max_pgsize = (((read_c0_pagemask() >> C0_PAGEMASK_SHIFT) &
C0_PAGEMASK_MASK) + 1) * 4 * KiB;
return max_pgsize;
}
static inline uint32_t get_tlb_size(void)
{
uint32_t tlbsize;
tlbsize = ((read_c0_config1() >> C0_CONFIG1_MMUSIZE_SHIFT) &
C0_CONFIG1_MMUSIZE_MASK) + 1;
return tlbsize;
}
int identity_map(uint32_t start, size_t len, uint32_t coherency);
#endif /* __MIPS_ARCH_MMU_H */

19
src/arch/mips/include/arch/pci_ops.h
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@ -1,19 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef ARCH_MIPS_PCI_OPS_H
#define ARCH_MIPS_PCI_OPS_H
#include <device/pci_mmio_cfg.h>
#endif

22
src/arch/mips/include/arch/stages.h
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@ -1,22 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __MIPS_ARCH_STAGES_H
#define __MIPS_ARCH_STAGES_H
#include <stdint.h>
#include <main_decl.h>
void stage_entry(uintptr_t stage_arg);
#endif /* __MIPS_ARCH_STAGES_H */

59
src/arch/mips/include/arch/types.h
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@ -1,59 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __MIPS_ARCH_TYPES_H
#define __MIPS_ARCH_TYPES_H
typedef unsigned short umode_t;
/*
* __xx is ok: it doesn't pollute the POSIX namespace. Use these in the
* header files exported to user space
*/
typedef __signed__ char __s8;
typedef unsigned char __u8;
typedef __signed__ short __s16;
typedef unsigned short __u16;
typedef __signed__ int __s32;
typedef unsigned int __u32;
#if defined(__GNUC__)
__extension__ typedef __signed__ long long __s64;
__extension__ typedef unsigned long long __u64;
#endif
typedef signed char s8;
typedef unsigned char u8;
typedef signed short s16;
typedef unsigned short u16;
typedef signed int s32;
typedef unsigned int u32;
typedef signed long long s64;
typedef unsigned long long u64;
#define BITS_PER_LONG 32
/* Dma addresses are 32-bits wide. */
typedef u32 dma_addr_t;
typedef unsigned long phys_addr_t;
typedef unsigned long phys_size_t;
#endif /* __MIPS_ARCH_TYPES_H */

98
src/arch/mips/mmu.c
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@ -1,98 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; version 2 of
* the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <arch/mmu.h>
#include <console/console.h>
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#define MIN_PAGE_SIZE (4 * KiB)
static int add_wired_tlb_entry(uint32_t entrylo0, uint32_t entrylo1,
uint32_t entryhi, uint32_t pgsize)
{
uint32_t tlbindex;
tlbindex = read_c0_wired();
if (tlbindex >= get_tlb_size() || tlbindex >= C0_WIRED_MASK) {
printk(BIOS_ERR, "Ran out of TLB entries\n");
return -1;
}
write_c0_wired(tlbindex + 1);
write_c0_index(tlbindex);
write_c0_pagemask(((pgsize / MIN_PAGE_SIZE) - 1) << C0_PAGEMASK_SHIFT);
write_c0_entryhi(entryhi);
write_c0_entrylo0(entrylo0);
write_c0_entrylo1(entrylo1);
mtc0_tlbw_hazard();
tlb_write_indexed();
tlbw_use_hazard();
return 0;
}
static uint32_t pick_pagesize(uint32_t start, uint32_t len)
{
uint32_t pgsize, max_pgsize;
max_pgsize = get_max_pagesize();
for (pgsize = max_pgsize;
pgsize >= MIN_PAGE_SIZE;
pgsize = pgsize / 4) {
/*
* Each TLB entry maps a pair of virtual pages. To avoid
* aliasing, pick the largest page size that is at most
* half the size of the region we're trying to map.
*/
if (IS_ALIGNED(start, 2 * pgsize) && (2 * pgsize <= len))
break;
}
return pgsize;
}
/*
* Identity map the memory from [start,start+len] in the TLB using the
* largest suitable page size so as to conserve TLB entries.
*/
int identity_map(uint32_t start, size_t len, uint32_t coherency)
{
uint32_t pgsize, pfn, entryhi, entrylo0, entrylo1;
coherency &= C0_ENTRYLO_COHERENCY_MASK;
while (len > 0) {
pgsize = pick_pagesize(start, len);
entryhi = start;
pfn = start >> 12;
entrylo0 = (pfn << C0_ENTRYLO_PFN_SHIFT) | coherency |
C0_ENTRYLO_D | C0_ENTRYLO_V | C0_ENTRYLO_G;
start += pgsize;
len -= MIN(len, pgsize);
if (len >= pgsize) {
pfn = start >> 12;
entrylo1 = (pfn << C0_ENTRYLO_PFN_SHIFT) |
coherency | C0_ENTRYLO_D | C0_ENTRYLO_V |
C0_ENTRYLO_G;
start += pgsize;
len -= MIN(len, pgsize);
} else {
entrylo1 = 0;
}
if (add_wired_tlb_entry(entrylo0, entrylo1, entryhi, pgsize))
return -1;
}
return 0;
}

23
src/arch/mips/stages.c
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@ -1,23 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <cbmem.h>
#include <arch/stages.h>
#include <arch/cache.h>
void stage_entry(uintptr_t stage_arg)
{
if (!ENV_ROMSTAGE_OR_BEFORE)
_cbmem_top_ptr = stage_arg;
main();
}

28
src/arch/mips/tables.c
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@ -1,28 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <bootmem.h>
#include <boot/tables.h>
#include <boot/coreboot_tables.h>
void arch_write_tables(uintptr_t coreboot_table)
{
}
void bootmem_arch_add_ranges(void)
{
}
void lb_arch_add_records(struct lb_header *header)
{
}

4
src/console/vtxprintf.c
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@ -20,10 +20,6 @@
#define call_tx(x) tx_byte(x, data) #define call_tx(x) tx_byte(x, data)
#if !CONFIG(ARCH_MIPS)
#define SUPPORT_64BIT_INTS
#endif
#define ZEROPAD 1 /* pad with zero */ #define ZEROPAD 1 /* pad with zero */
#define SIGN 2 /* unsigned/signed long */ #define SIGN 2 /* unsigned/signed long */
#define PLUS 4 /* show plus */ #define PLUS 4 /* show plus */

1
src/cpu/Makefile.inc
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@ -4,7 +4,6 @@
subdirs-y += allwinner subdirs-y += allwinner
subdirs-y += amd subdirs-y += amd
subdirs-y += armltd subdirs-y += armltd
subdirs-y += imgtec
subdirs-y += intel subdirs-y += intel
subdirs-y += ti subdirs-y += ti
subdirs-y += via subdirs-y += via

2
src/drivers/spi/cbfs_spi.c
View File

@ -53,7 +53,7 @@ static ssize_t spi_readat(const struct region_device *rd, void *b,
u64 speed; /* KiB/s */ u64 speed; /* KiB/s */
int bps; /* Bits per second */ int bps; /* Bits per second */
speed = size * 1000 / usecs; speed = size * (u64)1000 / usecs;
bps = speed * 8; bps = speed * 8;
printk(BIOS_DEBUG, "read SPI %#zx %#zx: %ld us, %lld KB/s, %d.%03d Mbps\n", printk(BIOS_DEBUG, "read SPI %#zx %#zx: %ld us, %lld KB/s, %d.%03d Mbps\n",

18
src/include/rules.h
View File

@ -173,7 +173,6 @@
#define ENV_ARMV7 0 #define ENV_ARMV7 0
#endif #endif
#define ENV_ARMV8 0 #define ENV_ARMV8 0
#define ENV_MIPS 0
#define ENV_RISCV 0 #define ENV_RISCV 0
#define ENV_X86 0 #define ENV_X86 0
#define ENV_X86_32 0 #define ENV_X86_32 0
@ -189,19 +188,6 @@
#else #else
#define ENV_ARMV8 0 #define ENV_ARMV8 0
#endif #endif
#define ENV_MIPS 0
#define ENV_RISCV 0
#define ENV_X86 0
#define ENV_X86_32 0
#define ENV_X86_64 0
#elif defined(__ARCH_mips__)
#define ENV_ARM 0
#define ENV_ARM64 0
#define ENV_ARMV4 0
#define ENV_ARMV7 0
#define ENV_ARMV8 0
#define ENV_MIPS 1
#define ENV_RISCV 0 #define ENV_RISCV 0
#define ENV_X86 0 #define ENV_X86 0
#define ENV_X86_32 0 #define ENV_X86_32 0
@ -213,7 +199,6 @@
#define ENV_ARMV4 0 #define ENV_ARMV4 0
#define ENV_ARMV7 0 #define ENV_ARMV7 0
#define ENV_ARMV8 0 #define ENV_ARMV8 0
#define ENV_MIPS 0
#define ENV_RISCV 1 #define ENV_RISCV 1
#define ENV_X86 0 #define ENV_X86 0
#define ENV_X86_32 0 #define ENV_X86_32 0
@ -225,7 +210,6 @@
#define ENV_ARMV4 0 #define ENV_ARMV4 0
#define ENV_ARMV7 0 #define ENV_ARMV7 0
#define ENV_ARMV8 0 #define ENV_ARMV8 0
#define ENV_MIPS 0
#define ENV_RISCV 0 #define ENV_RISCV 0
#define ENV_X86 1 #define ENV_X86 1
#define ENV_X86_32 1 #define ENV_X86_32 1
@ -237,7 +221,6 @@
#define ENV_ARMV4 0 #define ENV_ARMV4 0
#define ENV_ARMV7 0 #define ENV_ARMV7 0
#define ENV_ARMV8 0 #define ENV_ARMV8 0
#define ENV_MIPS 0
#define ENV_RISCV 0 #define ENV_RISCV 0
#define ENV_X86 1 #define ENV_X86 1
#define ENV_X86_32 0 #define ENV_X86_32 0
@ -249,7 +232,6 @@
#define ENV_ARMV4 0 #define ENV_ARMV4 0
#define ENV_ARMV7 0 #define ENV_ARMV7 0
#define ENV_ARMV8 0 #define ENV_ARMV8 0
#define ENV_MIPS 0
#define ENV_RISCV 0 #define ENV_RISCV 0
#define ENV_X86 0 #define ENV_X86 0
#define ENV_X86_32 0 #define ENV_X86_32 0

3
src/vendorcode/google/chromeos/Makefile.inc
View File

@ -23,8 +23,7 @@ ramstage-$(CONFIG_HAVE_REGULATORY_DOMAIN) += wrdd.c
ramstage-$(CONFIG_USE_SAR) += sar.c ramstage-$(CONFIG_USE_SAR) += sar.c
ramstage-$(CONFIG_CHROMEOS_DSM_CALIB) += dsm_calib.c ramstage-$(CONFIG_CHROMEOS_DSM_CALIB) += dsm_calib.c
ramstage-$(CONFIG_TPM_CR50) += cr50_enable_update.c ramstage-$(CONFIG_TPM_CR50) += cr50_enable_update.c
ifeq ($(CONFIG_ARCH_MIPS),)
bootblock-y += watchdog.c bootblock-y += watchdog.c
verstage-y += watchdog.c verstage-y += watchdog.c
ramstage-y += watchdog.c ramstage-y += watchdog.c
endif

3
toolchain.inc
View File

@ -56,12 +56,10 @@ ARCHDIR-x86_64 := x86
ARCHDIR-arm := arm ARCHDIR-arm := arm
ARCHDIR-arm64 := arm64 ARCHDIR-arm64 := arm64
ARCHDIR-riscv := riscv ARCHDIR-riscv := riscv
ARCHDIR-mips := mips
ARCHDIR-ppc64 := ppc64 ARCHDIR-ppc64 := ppc64
CFLAGS_arm += CFLAGS_arm +=
CFLAGS_arm64 += -mgeneral-regs-only CFLAGS_arm64 += -mgeneral-regs-only
CFLAGS_mips += -mips32r2 -G 0 -mno-abicalls -fno-pic
CFLAGS_riscv += CFLAGS_riscv +=
CFLAGS_x86_32 += CFLAGS_x86_32 +=
CFLAGS_x86_64 += -mcmodel=large -mno-red-zone CFLAGS_x86_64 += -mcmodel=large -mno-red-zone
@ -83,7 +81,6 @@ CFLAGS_ppc64 +=
ifeq ($(CONFIG_COMPILER_GCC),y) ifeq ($(CONFIG_COMPILER_GCC),y)
CFLAGS_arm += -Wstack-usage=1536 CFLAGS_arm += -Wstack-usage=1536
CFLAGS_arm64 += -Wstack-usage=1536 CFLAGS_arm64 += -Wstack-usage=1536
CFLAGS_mips += -Wstack-usage=1536
CFLAGS_riscv += -Wstack-usage=1536 CFLAGS_riscv += -Wstack-usage=1536
CFLAGS_ppc64 += -Wstack-usage=1536 CFLAGS_ppc64 += -Wstack-usage=1536
endif endif

3
util/README.md
View File

@ -9,9 +9,6 @@ settings. `Perl`
platform. `C` platform. `C`
* __autoport__ - Automated porting coreboot to Sandy Bridge/Ivy Bridge * __autoport__ - Automated porting coreboot to Sandy Bridge/Ivy Bridge
platforms `Go` platforms `Go`
* __bimgtool__ - A simple tool which generates and verifies boot images
in the BIMG format, used in systems designed by Imagination
Technologies, for example the Pistachio SoC. `C`
* __bincfg__ - Compiler/Decompiler for data blobs with specs `Lex` * __bincfg__ - Compiler/Decompiler for data blobs with specs `Lex`
`Yacc` `Yacc`
* __board_status__ - Tools to collect logs and upload them to the board * __board_status__ - Tools to collect logs and upload them to the board

2
util/cbfstool/cbfs.h
View File

@ -65,7 +65,7 @@ struct cbfs_header {
#define CBFS_ARCHITECTURE_X86 0x00000001 #define CBFS_ARCHITECTURE_X86 0x00000001
#define CBFS_ARCHITECTURE_ARM 0x00000010 #define CBFS_ARCHITECTURE_ARM 0x00000010
#define CBFS_ARCHITECTURE_AARCH64 0x0000aa64 #define CBFS_ARCHITECTURE_AARCH64 0x0000aa64
#define CBFS_ARCHITECTURE_MIPS 0x00000100 #define CBFS_ARCHITECTURE_MIPS 0x00000100 /* deprecated */
#define CBFS_ARCHITECTURE_RISCV 0xc001d0de #define CBFS_ARCHITECTURE_RISCV 0xc001d0de
#define CBFS_ARCHITECTURE_PPC64 0x407570ff #define CBFS_ARCHITECTURE_PPC64 0x407570ff

10
util/crossgcc/Makefile
View File

@ -8,12 +8,12 @@ DEST ?= $(CURDIR)/xgcc
# Example: BUILDGCC_OPTIONS=-c to remove temporary files before build # Example: BUILDGCC_OPTIONS=-c to remove temporary files before build
all all_with_gdb: all all_with_gdb:
$(MAKE) build-i386 build-x64 build-arm build-mips \ $(MAKE) build-i386 build-x64 build-arm \
build-riscv build-aarch64 build-ppc64 build-nds32le \ build-riscv build-aarch64 build-ppc64 build-nds32le \
build_clang build_iasl build_make build_nasm build_clang build_iasl build_make build_nasm
all_without_gdb: all_without_gdb:
$(MAKE) SKIP_GDB=1 build-i386 build-x64 build-arm build-mips \ $(MAKE) SKIP_GDB=1 build-i386 build-x64 build-arm \
build-riscv build-aarch64 build-ppc64 build-nds32le \ build-riscv build-aarch64 build-ppc64 build-nds32le \
build_clang build_iasl build_make build_nasm build_clang build_iasl build_make build_nasm
@ -59,9 +59,6 @@ build-arm:
build-aarch64: build-aarch64:
@$(MAKE) build_tools BUILD_PLATFORM=aarch64-elf @$(MAKE) build_tools BUILD_PLATFORM=aarch64-elf
build-mips:
@$(MAKE) build_tools BUILD_PLATFORM=mipsel-elf
build-riscv: build-riscv:
# GDB is currently not supported on RISC-V # GDB is currently not supported on RISC-V
@$(MAKE) build_gcc BUILD_PLATFORM=riscv-elf @$(MAKE) build_gcc BUILD_PLATFORM=riscv-elf
@ -88,7 +85,6 @@ distclean: clean
.PHONY: build_gcc build_iasl build_gdb build_clang all all_with_gdb \ .PHONY: build_gcc build_iasl build_gdb build_clang all all_with_gdb \
all_without_gdb build_tools build-i386 build-x64 build-arm \ all_without_gdb build_tools build-i386 build-x64 build-arm \
build-aarch64 build-mips build-riscv build-ppc64 build-nds32le \ build-aarch64 build-riscv build-ppc64 build-nds32le build-nasm \
build-nasm \
clean distclean clean_tempfiles clean distclean clean_tempfiles
.NOTPARALLEL: .NOTPARALLEL:

6
util/crossgcc/Makefile.inc
View File

@ -13,7 +13,7 @@
## GNU General Public License for more details. ## GNU General Public License for more details.
## ##
TOOLCHAIN_ARCHES := i386 x64 arm aarch64 mips riscv ppc64 nds32le TOOLCHAIN_ARCHES := i386 x64 arm aarch64 riscv ppc64 nds32le
help_toolchain help:: help_toolchain help::
@echo '*** Toolchain targets ***' @echo '*** Toolchain targets ***'
@ -39,9 +39,9 @@ crossgcc: clean-for-update
$(MAKE) -C util/crossgcc all_without_gdb SKIP_CLANG=1 $(MAKE) -C util/crossgcc all_without_gdb SKIP_CLANG=1
.PHONY: crossgcc crossgcc-i386 crossgcc-x64 crossgcc-arm crossgcc-aarch64 \ .PHONY: crossgcc crossgcc-i386 crossgcc-x64 crossgcc-arm crossgcc-aarch64 \
crossgcc-mips crossgcc-riscv crossgcc-power8 crossgcc-clean iasl \ crossgcc-riscv crossgcc-power8 crossgcc-clean iasl \
clang crosstools-i386 crosstools-x64 crosstools-arm \ clang crosstools-i386 crosstools-x64 crosstools-arm \
crosstools-aarch64 crosstools-mips crosstools-riscv crosstools-power8 \ crosstools-aarch64 crosstools-riscv crosstools-power8 \
jenkins-build-toolchain gnumake nasm jenkins-build-toolchain gnumake nasm
$(foreach arch,$(TOOLCHAIN_ARCHES),crossgcc-$(arch)): clean-for-update $(foreach arch,$(TOOLCHAIN_ARCHES),crossgcc-$(arch)): clean-for-update

1
util/crossgcc/README
View File

@ -7,7 +7,6 @@ known working:
i386-elf i386-elf
x86_64-elf x86_64-elf
powerpc-elf powerpc-elf
mipsel-elf
arm-elf arm-elf
armv7a-eabi armv7a-eabi
aarch64-elf aarch64-elf

3
util/crossgcc/buildgcc
View File

@ -604,7 +604,7 @@ myhelp()
printf " (defaults to $TARGETARCH)\n" printf " (defaults to $TARGETARCH)\n"
printf " [-S|--scripting] build scripting support for GDB\n\n" printf " [-S|--scripting] build scripting support for GDB\n\n"
printf "Platforms for GCC & GDB:\n" printf "Platforms for GCC & GDB:\n"
printf " x86_64 i386-elf i386-mingw32 mipsel-elf riscv-elf arm aarch64\n" printf " x86_64 i386-elf i386-mingw32 riscv-elf arm aarch64\n"
printf " powerpc64le-linux-gnu nds32le-elf\n\n" printf " powerpc64le-linux-gnu nds32le-elf\n\n"
} }
@ -1018,7 +1018,6 @@ case "$TARGETARCH" in
x86_64*) TARGETARCH=x86_64-elf;; x86_64*) TARGETARCH=x86_64-elf;;
i386-elf) ;; i386-elf) ;;
i386-mingw32) ;; i386-mingw32) ;;
mipsel-elf) ;;
riscv-elf) TARGETARCH=riscv64-elf;; riscv-elf) TARGETARCH=riscv64-elf;;
powerpc64*-linux*) ;; powerpc64*-linux*) ;;
i386*) TARGETARCH=i386-elf;; i386*) TARGETARCH=i386-elf;;

3
util/docker/coreboot.org-status/board-status.html/tohtml.sh
View File

@ -334,9 +334,6 @@ EOF
TI_AM335X) TI_AM335X)
cpu_nice="TI AM335X"; cpu_nice="TI AM335X";
socket_nice="?";; socket_nice="?";;
IMGTEC_PISTACHIO)
cpu_nice="Imagination Technologies Pistachio";
socket_nice="—";;
INTEL_APOLLOLAKE) INTEL_APOLLOLAKE)
cpu_nice="Intel® Apollo Lake"; cpu_nice="Intel® Apollo Lake";
socket_nice="—";; socket_nice="—";;

5
util/release/genrelnotes
View File

@ -353,11 +353,6 @@ get_log_dedupe "ARM" \
get_log_dedupe "RISC-V" \ get_log_dedupe "RISC-V" \
"$(for codedir in $(grep -rl "_RISCV" --include=Kconfig | grep -v 'payloads/\|drivers/\|vendorcode/\|console' ); do dirname "$codedir"; done | grep -v '^src$')" \ "$(for codedir in $(grep -rl "_RISCV" --include=Kconfig | grep -v 'payloads/\|drivers/\|vendorcode/\|console' ); do dirname "$codedir"; done | grep -v '^src$')" \
"riscv\|risc-v\|sifive" "riscv\|risc-v\|sifive"
get_log_dedupe "MIPS" \
"$(for codedir in $(grep -rl "_MIPS" --include=Kconfig | \
grep -v 'src/mainboard\|payloads/\|drivers/\|vendorcode/\|console' ); \
do dirname "$codedir"; done | grep -v '^src$')"
} }
get_log_dedupe "X86 intel" \ get_log_dedupe "X86 intel" \

20
util/xcompile/xcompile
View File

@ -195,14 +195,6 @@ detect_special_flags() {
"$LDFLAGS --fix-cortex-a53-843419" && \ "$LDFLAGS --fix-cortex-a53-843419" && \
LDFLAGS_ARM64_A53_ERRATUM_843419+=" --fix-cortex-a53-843419" LDFLAGS_ARM64_A53_ERRATUM_843419+=" --fix-cortex-a53-843419"
;; ;;
mipsel)
testcc "$GCC" "$CFLAGS_GCC -mno-abicalls -fno-pic" && \
CFLAGS_GCC+=" -mno-abicalls -fno-pic"
# Enforce little endian mode.
testcc "$GCC" "$CFLAGS_GCC -EL" && \
CFLAGS_GCC+=" -EL"
;;
esac esac
} }
@ -314,7 +306,7 @@ EOF
} }
# Architecture definitions # Architecture definitions
SUPPORTED_ARCHITECTURES="arm arm64 mipsel riscv x64 x86 ppc64" SUPPORTED_ARCHITECTURES="arm arm64 riscv x64 x86 ppc64"
# TARCH: local name for the architecture # TARCH: local name for the architecture
# (used as CC_${TARCH} in the build system) # (used as CC_${TARCH} in the build system)
@ -367,16 +359,6 @@ arch_config_x86() {
CC_RT_EXTRA_GCC="--wrap __divdi3 --wrap __udivdi3 --wrap __moddi3 --wrap __umoddi3" CC_RT_EXTRA_GCC="--wrap __divdi3 --wrap __udivdi3 --wrap __moddi3 --wrap __umoddi3"
} }
arch_config_mipsel() {
TARCH="mips"
TBFDARCHS="tradlittlemips littlemips"
TCLIST="mipsel"
TWIDTH="32"
TSUPP="mips mipsel"
TABI="elf"
TENDIAN="EL"
}
arch_config_ppc64() { arch_config_ppc64() {
TARCH="ppc64" TARCH="ppc64"
TBFDARCHS="powerpc" TBFDARCHS="powerpc"