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libpayload: mips: Add macros to convert to/from KSEG{0,1} addresses 

Add helper macros to convert between physical addresses and KSEG{0,1}
addresses.  Also get rid of the virt_to_{bus,phys}_offset variables
as these are fixed values.

As nobody seems to be using getpagesize() on MIPS, no need to keep
virtual.c.

BUG=chrome-os-partner:36258
BRANCH=none
TEST=Build and boot on Pistachio.

Change-Id: Ia26c8eae53eb8f860747a6b321363776841d1a94
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: c422b02e9a2a20d130913b1cfb835ad74c39ddca
Original-Change-Id: I9476cd225a08534830c700cba7bf9d3ef871757e
Original-Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/247190
Reviewed-on: http://review.coreboot.org/9821
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Andrew Bresticker 2015-02-06 11:17:35 -08:00 committed by Patrick Georgi
parent ef4e87b45b
commit ca0e89b61e
3 changed files with 12 additions and 37 deletions
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1
payloads/libpayload/arch/mips/Makefile.inc
View File

@ -36,4 +36,3 @@ libc-y += sysinfo.c
libc-y += string.c
libc-y += timer.c
libc-y += util.S
libc-y += virtual.c

28
payloads/libpayload/arch/mips/virtual.c
View File

@ -1,28 +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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <unistd.h>
unsigned long virt_to_phys_offset = 0;
unsigned long virt_to_bus_offset = 0x60000000;
int getpagesize(void)
{
return 4096;
};

20
payloads/libpayload/include/mips/arch/virtual.h
View File

@ -20,15 +20,19 @@
#ifndef __MIPS_ARCH_VIRTUAL_H
#define __MIPS_ARCH_VIRTUAL_H
extern unsigned long virt_to_phys_offset;
extern unsigned long virt_to_bus_offset;
#define KSEG0_BASE 0x80000000
#define KSEG1_BASE 0xA0000000
#define virt_to_phys(virt) ((unsigned long) (virt) + virt_to_phys_offset)
#define phys_to_virt(phys) ((void *) ((unsigned long) (phys) - \
virt_to_phys_offset))
#define kseg0_to_phys(virt) ((unsigned long)(virt) - KSEG0_BASE)
#define phys_to_kseg0(phys) ((void *)((unsigned long)(phys) + KSEG0_BASE))
#define virt_to_bus(virt) ((unsigned long) (virt) + virt_to_bus_offset)
#define bus_to_virt(phys) ((void *) ((unsigned long) (phys) - \
virt_to_bus_offset))
#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