a386bf790e
BRANCH=storm
BUG=chrome-os-partner:24786
TEST=verified mmu.pagetable.list output for Storm:
_______address___________|_physical________________|sec|_d_|_size____|_permissions____________________|_glb|_shr|_pageflags______________________|
C:00000000--00000FFF| | | | | | | | |
C:00001000--000FFFFF| A:00:00001000--000FFFFF| ns| 00| 00001000| P:readwrite U:readwrite notexec| yes| no | strongly ordered |
C:00100000--29FFFFFF| A:00:00100000--29FFFFFF| ns| 00| 00100000| P:readwrite U:readwrite notexec| yes| no | strongly ordered |
C:2A000000--2A05FFFF| A:00:2A000000--2A05FFFF| ns| 00| 00001000| P:readwrite U:readwrite exec | yes| no | write-back/no write alloc |
C:2A060000--2A0FFFFF| A:00:2A060000--2A0FFFFF| ns| 00| 00001000| P:readwrite U:readwrite notexec| yes| no | strongly ordered |
C:2A100000--3FFFFFFF| A:00:2A100000--3FFFFFFF| ns| 00| 00100000| P:readwrite U:readwrite notexec| yes| no | strongly ordered |
C:40000000--59FFFFFF| A:00:40000000--59FFFFFF| ns| 00| 00100000| P:readwrite U:readwrite exec | yes| no | write-back/no write alloc |
C:5A000000--5A1FFFFF| A:00:5A000000--5A1FFFFF| ns| 00| 00100000| P:readwrite U:readwrite notexec| yes| no | strongly ordered |
C:5A200000--7FFFFFFF| A:00:5A200000--7FFFFFFF| ns| 00| 00100000| P:readwrite U:readwrite exec | yes| no | write-back/no write alloc |
C:80000000--FFFFFFFF| | | | | | | | |
Change-Id: I08a5094b2da9d67244c94984e2da14399e477b01
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: f137a589434b09055e6b9d32907e662e6c296502
Original-Change-Id: Ia2deab1cf8f08c4ba5a5b6dbe4c4ebf29c9df480
Original-Signed-off-by: Vikas Das <vdas@codeaurora.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/253801
Original-Tested-by: Deepa Dinamani <deepad@codeaurora.org>
Original-Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Commit-Queue: Deepa Dinamani <deepad@codeaurora.org>
Reviewed-on: http://review.coreboot.org/9920
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
68 lines
2 KiB
C
68 lines
2 KiB
C
/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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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 <arch/cache.h>
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#include <symbols.h>
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#include "mmu.h"
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/* convenient shorthand (in MB) */
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#define RPM_START ((uintptr_t)_rpm / KiB)
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#define RPM_END ((uintptr_t)_erpm / KiB)
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#define RPM_SIZE (RPM_END - RPM_START)
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#define SRAM_START ((uintptr_t)_sram / KiB)
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#define SRAM_END ((uintptr_t)_esram / KiB)
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#define DRAM_START ((uintptr_t)_dram / MiB)
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#define DRAM_SIZE (CONFIG_DRAM_SIZE_MB)
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#define DRAM_END (DRAM_START + DRAM_SIZE)
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/* DMA memory for drivers */
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#define DMA_START ((uintptr_t)_dma_coherent / MiB)
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#define DMA_SIZE (_dma_coherent_size / MiB)
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void setup_dram_mappings(enum dram_state dram)
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{
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if (dram == DRAM_INITIALIZED) {
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mmu_config_range(DRAM_START, DRAM_SIZE, DCACHE_WRITEBACK);
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/* Map DMA memory */
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mmu_config_range(DMA_START, DMA_SIZE, DCACHE_OFF);
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} else {
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mmu_disable_range(DRAM_START, DRAM_SIZE);
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/* Map DMA memory */
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mmu_disable_range(DMA_START, DMA_SIZE);
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}
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}
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void setup_mmu(enum dram_state dram)
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{
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dcache_mmu_disable();
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/* start with mapping everything as strongly ordered. */
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mmu_config_range(0, 4096, DCACHE_OFF);
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/* Map Device memory. */
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mmu_config_range_kb(RPM_START, RPM_SIZE, DCACHE_OFF);
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mmu_config_range_kb(SRAM_START, SRAM_END - SRAM_START,
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DCACHE_WRITEBACK);
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/* Map DRAM memory */
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setup_dram_mappings(dram);
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mmu_disable_range(DRAM_END, 4096 - DRAM_END);
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/* disable Page 0 for trapping NULL pointer references. */
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mmu_disable_range_kb(0, 1);
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mmu_init();
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dcache_mmu_enable();
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}
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