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soc/qualcomm/sdm845: Add MMU support 

Initialize 1st 4GB as Device Memory, except:
 * 1st page: NULL address
 * System_IMEM: Cached SRAM
 * Boot_IMEM: Cached SRAM

TEST=build

Change-Id: Ic6cf022b08bb2568fdf956cea8bad46da89236c5
Signed-off-by: T Michael Turney <mturney@codeaurora.org>
Reviewed-on: https://review.coreboot.org/25201
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
T Michael Turney 2018-03-27 09:33:42 -07:00 committed by Martin Roth
parent ace0c06de1
commit a12c6019b5
5 changed files with 85 additions and 1 deletions
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1
src/soc/qualcomm/sdm845/Makefile.inc
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@ -5,6 +5,7 @@ ifeq ($(CONFIG_SOC_QUALCOMM_SDM845),y)
bootblock-y += bootblock.c
bootblock-y += timer.c
bootblock-y += spi.c
bootblock-y += mmu.c
################################################################################
verstage-y += timer.c

3
src/soc/qualcomm/sdm845/bootblock.c
View File

@ -14,8 +14,9 @@
*/
#include <bootblock_common.h>
#include <soc/mmu.h>
void bootblock_soc_init(void)
{
sdm845_mmu_init();
}

21
src/soc/qualcomm/sdm845/include/soc/mmu.h Normal file
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@ -0,0 +1,21 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2018, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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 _SOC_QUALCOMM_SDM845_MMU_H__
#define _SOC_QUALCOMM_SDM845_MMU_H__
void sdm845_mmu_init(void);
#endif // _SOC_QUALCOMM_SDM845_MMU_H_

29
src/soc/qualcomm/sdm845/include/soc/symbols.h Normal file
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@ -0,0 +1,29 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2018, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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 _SOC_QUALCOMM_SDM845_SYMBOLS_H_
#define _SOC_QUALCOMM_SDM845_SYMBOLS_H_
#include <types.h>
extern u8 _ssram[];
extern u8 _essram[];
#define _ssram_size (_essram - _ssram)
extern u8 _bsram[];
extern u8 _ebsram[];
#define _bsram_size (_ebsram - _bsram)
#endif // _SOC_QUALCOMM_SDM845_SYMBOLS_H_

32
src/soc/qualcomm/sdm845/mmu.c Normal file
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@ -0,0 +1,32 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2018, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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 <symbols.h>
#include <arch/mmu.h>
#include <arch/cache.h>
#include <soc/mmu.h>
#include <soc/symbols.h>
void sdm845_mmu_init()
{
mmu_init();
mmu_config_range((void *)(4 * KiB), ((4UL * GiB) - (4 * KiB)),
MA_DEV | MA_S | MA_RW);
mmu_config_range((void *)_ssram, _ssram_size, MA_MEM | MA_S | MA_RW);
mmu_config_range((void *)_bsram, _bsram_size, MA_MEM | MA_S | MA_RW);
mmu_enable();
}