arm/arm64: Generalize bootblock C entry point
When we first added ARM support to coreboot, it was clear that the bootblock would need to do vastly different tasks than on x86, so we moved its main logic under arch/. Now that we have several more architectures, it turns out (as with so many things lately) that x86 is really the odd one out, and all the others are trying to do pretty much the same thing. This has already caused maintenance issues as the ARM32 bootblock developed and less-mature architectures were left behind with old cruft. This patch tries to address that problem by centralizing that logic under lib/ for use by all architectures/SoCs that don't explicitly opt-out (with the slightly adapted existing BOOTBLOCK_CUSTOM option). This works great out of the box for ARM32 and ARM64. It could probably be easily applied to MIPS and RISCV as well, but I don't have any of those boards to test so I'll mark them as BOOTBLOCK_CUSTOM for now and leave that for later cleanup. BRANCH=None BUG=None TEST=Built Jerry and Falco, booted Oak. Change-Id: Ibbf727ad93651e388aef20e76f03f5567f9860cb Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: http://review.coreboot.org/12076 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins)
This commit is contained in:
parent
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86fc11d0c9
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@ -248,6 +248,7 @@ config FLASHMAP_OFFSET
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help
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Offset of flash map in firmware image
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# TODO: This doesn't belong here, move to src/arch/x86/Kconfig
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choice
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prompt "Bootblock behaviour"
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default BOOTBLOCK_SIMPLE
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@ -260,6 +261,12 @@ config BOOTBLOCK_NORMAL
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endchoice
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# To be selected by arch, SoC or mainboard if it does not want use the normal
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# src/lib/bootblock.c#main() C entry point.
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config BOOTBLOCK_CUSTOM
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bool
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default n
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config BOOTBLOCK_SOURCE
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string
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default "bootblock_simple.c" if BOOTBLOCK_SIMPLE
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@ -22,12 +22,6 @@ config ARCH_RAMSTAGE_ARM
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source src/arch/arm/armv4/Kconfig
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source src/arch/arm/armv7/Kconfig
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# If a custom bootblock is necessary, this option should be "select"-ed by
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# the thing that needs it, probably the CPU.
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config ARM_BOOTBLOCK_CUSTOM
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bool
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default n
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config ARM_LPAE
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bool
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default n
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@ -24,9 +24,8 @@ armv4_flags = -marm -march=armv4t -I$(src)/arch/arm/include/armv4/ \
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ifeq ($(CONFIG_ARCH_BOOTBLOCK_ARMV4),y)
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ifneq ($(CONFIG_ARM_BOOTBLOCK_CUSTOM),y)
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ifneq ($(CONFIG_BOOTBLOCK_CUSTOM),y)
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bootblock-y += bootblock.S
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bootblock-y += bootblock_simple.c
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endif
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bootblock-y += cache.c
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@ -31,9 +31,8 @@ ifeq ($(CONFIG_ARCH_BOOTBLOCK_ARMV7),y)
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bootblock-c-ccopts += $(armv7-a_flags)
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bootblock-S-ccopts += $(armv7-a_asm_flags)
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ifneq ($(CONFIG_ARM_BOOTBLOCK_CUSTOM),y)
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ifneq ($(CONFIG_BOOTBLOCK_CUSTOM),y)
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bootblock-y += bootblock.S
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bootblock-$(CONFIG_BOOTBLOCK_SIMPLE) += bootblock_simple.c
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endif
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bootblock-y += cache.c
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@ -46,9 +45,8 @@ else ifeq ($(CONFIG_ARCH_BOOTBLOCK_ARMV7_M),y)
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bootblock-c-ccopts += $(armv7-m_flags)
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bootblock-S-ccopts += $(armv7-m_asm_flags)
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ifneq ($(CONFIG_ARM_BOOTBLOCK_CUSTOM),y)
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ifneq ($(CONFIG_BOOTBLOCK_CUSTOM),y)
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bootblock-y += bootblock_m.S
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bootblock-y += bootblock_simple.c
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endif
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bootblock-y += exception_m.c
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bootblock-y += cache_m.c
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@ -22,12 +22,6 @@ config ARCH_RAMSTAGE_ARM64
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source src/arch/arm64/armv8/Kconfig
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source src/arch/arm64/cpu/Kconfig
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# If a custom bootblock is necessary, this option should be "select"-ed by
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# the thing that needs it, probably the CPU.
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config ARM64_BOOTBLOCK_CUSTOM
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bool
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default n
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config ARM64_USE_ARM_TRUSTED_FIRMWARE
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bool
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default n
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@ -26,10 +26,6 @@ armv8_asm_flags = $(armv8_flags)
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################################################################################
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ifeq ($(CONFIG_ARCH_BOOTBLOCK_ARMV8_64),y)
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ifneq ($(CONFIG_ARM64_BOOTBLOCK_CUSTOM),y)
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bootblock-y += bootblock.S
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bootblock-y += bootblock_simple.c
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endif
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bootblock-y += cache.c
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bootblock-y += cache_helpers.S
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bootblock-y += cpu.S
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bootblock-c-ccopts += $(armv8_flags)
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bootblock-S-ccopts += $(armv8_asm_flags)
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# Required to access unaligned timestamp struct members before MMU is active
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# (TODO: Maybe use explicit unaligned accesses in timestamp code instead, or
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# evaluate redesigning timestamp data structures to avoid misaligned members.)
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bootblock-c-ccopts += -mstrict-align
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endif
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################################################################################
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@ -1,60 +0,0 @@
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/*
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* This file is part of the coreboot project.
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*
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* Copyright 2014 Google Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; version 2 of
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* the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <bootblock_common.h>
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#include <arch/cache.h>
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#include <arch/stages.h>
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#include <arch/exception.h>
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#include <cbfs.h>
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#include <console/console.h>
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#include <program_loading.h>
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static int boot_cpu(void)
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{
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/*
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* FIXME: This is a stub for now. All non-boot CPUs should be
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* waiting for an interrupt. We could move the chunk of assembly
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* which puts them to sleep in here...
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*/
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return 1;
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}
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void main(void)
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{
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/* Globally disable MMU, caches, and branch prediction (these should
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* be disabled by default on reset) */
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mmu_disable();
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/*
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* Re-enable icache and branch prediction. MMU and dcache will be
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* set up later.
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*
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* Note: If booting from USB, we need to disable branch prediction
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* before copying from USB into RAM (FIXME: why?)
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*/
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if (boot_cpu()) {
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//bootblock_cpu_init();
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//bootblock_mainboard_init();
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}
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#if IS_ENABLED(CONFIG_BOOTBLOCK_CONSOLE)
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console_init();
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exception_init();
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#endif
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run_romstage();
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}
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@ -1,11 +0,0 @@
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#ifdef CONFIG_BOOTBLOCK_CPU_INIT
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#include CONFIG_BOOTBLOCK_CPU_INIT
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#endif
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#ifdef CONFIG_BOOTBLOCK_MAINBOARD_INIT
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#include CONFIG_BOOTBLOCK_MAINBOARD_INIT
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#else
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static void bootblock_mainboard_init(void)
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{
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}
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#endif
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@ -22,6 +22,7 @@ config ARCH_BOOTBLOCK_MIPS
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bool
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default n
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select ARCH_MIPS
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select BOOTBLOCK_CUSTOM
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config ARCH_VERSTAGE_MIPS
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bool
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@ -14,7 +14,7 @@
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* GNU General Public License for more details.
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*/
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#include <bootblock_common.h>
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#include <arch/bootblock_common.h>
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#include <console/console.h>
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#include <halt.h>
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#include <program_loading.h>
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@ -6,6 +6,7 @@ config ARCH_BOOTBLOCK_RISCV
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bool
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default n
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select ARCH_RISCV
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select BOOTBLOCK_CUSTOM
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config ARCH_VERSTAGE_RISCV
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bool
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config ARCH_RAMSTAGE_RISCV
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bool
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default n
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# If a custom bootblock is necessary, this option should be "select"-ed by
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# the thing that needs it, probably the CPU.
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config RISCV_BOOTBLOCK_CUSTOM
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bool
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default n
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@ -14,7 +14,6 @@
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* GNU General Public License for more details.
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*/
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#include <bootblock_common.h>
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#include <arch/cache.h>
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#include <arch/hlt.h>
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#include <arch/stages.h>
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@ -1,16 +0,0 @@
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#ifdef CONFIG_BOOTBLOCK_CPU_INIT
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#include CONFIG_BOOTBLOCK_CPU_INIT
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#endif
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// I'm disappointed that we let this kind of thing creep in.
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// we null out functions with this kind of stuff, AND weak symbols,
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// AND empty cpp function defines. What's next? Ouija boards?
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#if 0
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#ifdef CONFIG_BOOTBLOCK_MAINBOARD_INIT
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#include CONFIG_BOOTBLOCK_MAINBOARD_INIT
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#else
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static void bootblock_mainboard_init(void)
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{
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}
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#endif
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#endif
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@ -24,6 +24,7 @@ config ARCH_BOOTBLOCK_X86_32
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bool
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default n
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select ARCH_X86
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select BOOTBLOCK_CUSTOM
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config ARCH_VERSTAGE_X86_32
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bool
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bool
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default n
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select ARCH_X86
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select BOOTBLOCK_CUSTOM
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config ARCH_VERSTAGE_X86_64
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bool
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@ -1,5 +1,5 @@
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#include <smp/node.h>
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#include <bootblock_common.h>
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#include <arch/bootblock_common.h>
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#include <pc80/mc146818rtc.h>
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#include <halt.h>
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@ -1,5 +1,5 @@
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#include <smp/node.h>
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#include <bootblock_common.h>
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#include <arch/bootblock_common.h>
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#include <halt.h>
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static void main(unsigned long bist)
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* GNU General Public License for more details.
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*/
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#ifndef __ARCH_BOOTBLOCK_COMMON_H
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#define __ARCH_BOOTBLOCK_COMMON_H
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#ifndef __BOOTBLOCK_COMMON_H
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#define __BOOTBLOCK_COMMON_H
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/* These are defined as weak no-ops that can be overridden by mainboard/SoC. */
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void bootblock_mainboard_early_init(void);
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void bootblock_mainboard_init(void);
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void bootblock_soc_init(void);
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#endif /* __ARCH_BOOTBLOCK_COMMON_H */
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#endif /* __BOOTBLOCK_COMMON_H */
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@ -14,6 +14,11 @@
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#
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subdirs-y += loaders
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ifneq ($(CONFIG_BOOTBLOCK_CUSTOM),y)
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bootblock-y += bootblock.c
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endif
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bootblock-y += assets.c
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bootblock-y += prog_loaders.c
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bootblock-y += prog_ops.c
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@ -15,12 +15,10 @@
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*/
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#include <arch/exception.h>
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#include <arch/stages.h>
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#include <bootblock_common.h>
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#include <console/console.h>
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#include <delay.h>
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#include <program_loading.h>
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#include <smp/node.h>
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#include <timestamp.h>
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__attribute__((weak)) void bootblock_mainboard_early_init(void) { /* no-op */ }
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bootblock_mainboard_early_init();
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#if CONFIG_BOOTBLOCK_CONSOLE
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if (IS_ENABLED(CONFIG_BOOTBLOCK_CONSOLE)) {
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console_init();
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exception_init();
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#endif
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}
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bootblock_soc_init();
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bootblock_mainboard_init();
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@ -33,10 +33,6 @@ config CHROMEOS
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select SEPARATE_VERSTAGE
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select RETURN_FROM_VERSTAGE
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config BOOTBLOCK_CPU_INIT
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string
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default "soc/broadcom/cygnus/bootblock.c"
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config CONSOLE_SERIAL_UART_ADDRESS
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hex
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depends on DRIVERS_UART
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bool
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default n
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select ARCH_BOOTBLOCK_ARMV7_M
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select BOOTBLOCK_CUSTOM if VBOOT_VERIFY_FIRMWARE
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select ARCH_RAMSTAGE_ARMV7
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select ARCH_ROMSTAGE_ARMV7
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select ARCH_VERSTAGE_ARMV7_M
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select ARM_BOOTBLOCK_CUSTOM if VBOOT_VERIFY_FIRMWARE
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select BOOTBLOCK_CONSOLE
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select GENERIC_UDELAY
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select HAVE_MONOTONIC_TIMER
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config CHROMEOS
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select VBOOT_STARTS_IN_BOOTBLOCK
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config BOOTBLOCK_CPU_INIT
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string
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default "soc/marvell/bg4cd/bootblock.c"
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endif
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@ -2,6 +2,7 @@ config SOC_NVIDIA_TEGRA124
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bool
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default n
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select ARCH_BOOTBLOCK_ARMV4
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select BOOTBLOCK_CUSTOM
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select ARCH_VERSTAGE_ARMV7
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select ARCH_ROMSTAGE_ARMV7
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select ARCH_RAMSTAGE_ARMV7
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select HAVE_MONOTONIC_TIMER
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select GENERIC_UDELAY
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select BOOTBLOCK_CONSOLE
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select ARM_BOOTBLOCK_CUSTOM
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select ARM_LPAE
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select GENERIC_GPIO_LIB
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if SOC_NVIDIA_TEGRA124
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config BOOTBLOCK_CPU_INIT
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string
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default "soc/nvidia/tegra124/bootblock.c"
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help
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CPU/SoC-specific bootblock code. This is useful if the
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bootblock must load microcode or copy data from ROM before
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searching for the bootblock.
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config TEGRA124_MODEL_TD570D
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bool "TD570D"
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bool
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default n
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select ARCH_BOOTBLOCK_ARMV4
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select BOOTBLOCK_CUSTOM
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select ARCH_VERSTAGE_ARMV4
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select ARCH_ROMSTAGE_ARMV4
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select ARCH_RAMSTAGE_ARMV8_64
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@ -11,7 +12,6 @@ config SOC_NVIDIA_TEGRA132
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select GENERIC_UDELAY
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select HAVE_HARD_RESET
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select HAVE_UART_SPECIAL
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select ARM_BOOTBLOCK_CUSTOM
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select GENERIC_GPIO_LIB
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select HAS_PRECBMEM_TIMESTAMP_REGION
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help
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Initialize dp display
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config BOOTBLOCK_CPU_INIT
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string
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default "soc/nvidia/tegra132/bootblock.c"
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help
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CPU/SoC-specific bootblock code. This is useful if the
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bootblock must load microcode or copy data from ROM before
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searching for the bootblock.
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config MAX_CPUS
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int
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default 2
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@ -2,6 +2,7 @@ config SOC_NVIDIA_TEGRA210
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bool
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default n
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select ARCH_BOOTBLOCK_ARMV4
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select BOOTBLOCK_CUSTOM
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select ARCH_VERSTAGE_ARMV4
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select ARCH_ROMSTAGE_ARMV4
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select ARCH_RAMSTAGE_ARMV8_64
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@ -12,7 +13,6 @@ config SOC_NVIDIA_TEGRA210
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select GENERIC_UDELAY
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select HAVE_HARD_RESET
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select HAVE_UART_SPECIAL
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select ARM_BOOTBLOCK_CUSTOM
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select ARM64_USE_ARM_TRUSTED_FIRMWARE
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select HAS_PRECBMEM_TIMESTAMP_REGION
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select GENERIC_GPIO_LIB
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@ -36,14 +36,6 @@ config MAINBOARD_DO_SOR_INIT
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help
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Initialize dp display
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config BOOTBLOCK_CPU_INIT
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string
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default "soc/nvidia/tegra210/bootblock.c"
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help
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CPU/SoC-specific bootblock code. This is useful if the
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bootblock must load microcode or copy data from ROM before
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searching for the bootblock.
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config MAX_CPUS
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int
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default 4
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@ -36,10 +36,6 @@ config CHROMEOS
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select SEPARATE_VERSTAGE
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select RETURN_FROM_VERSTAGE
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config BOOTBLOCK_CPU_INIT
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string
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default "soc/rockchip/rk3288/bootblock.c"
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config PMIC_BUS
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int
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default -1
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