diff options
| author | Yidi Lin <yidi.lin@mediatek.com> | 2020-11-06 17:52:56 +0800 |
|---|---|---|
| committer | Hung-Te Lin <hungte@chromium.org> | 2020-11-20 08:40:58 +0000 |
| commit | 2832d11dd1aa59a195c67296a2a39ae4689b74eb (patch) | |
| tree | 110d90fb62790cc16f05d26367459490589d9114 | |
| parent | f06dd678e6bc916d29335b945f54d732b31e1ee2 (diff) | |
mediatek/mt8192: memlayout: Add DRAM DMA region
SPM DMA hardware requires a non-cacheable buffer to load SPM
firmware.
TEST=verified with SPM WIP patch.
SPM PC stays at 0x3f4 after SPM firmware is loaded.
Signed-off-by: Yidi Lin <yidi.lin@mediatek.com>
Change-Id: If6e803da23126419a96ffc0337d35edd0e181871
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47293
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
| -rw-r--r-- | src/soc/mediatek/mt8192/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/soc/mediatek/mt8192/include/soc/memlayout.ld | 10 | ||||
| -rw-r--r-- | src/soc/mediatek/mt8192/include/soc/symbols.h | 9 | ||||
| -rw-r--r-- | src/soc/mediatek/mt8192/mmu_operations.c | 8 |
4 files changed, 26 insertions, 3 deletions
diff --git a/src/soc/mediatek/mt8192/Makefile.inc b/src/soc/mediatek/mt8192/Makefile.inc index 07a13af5f3..421968d85a 100644 --- a/src/soc/mediatek/mt8192/Makefile.inc +++ b/src/soc/mediatek/mt8192/Makefile.inc @@ -26,7 +26,7 @@ romstage-y += ../common/cbmem.c romstage-y += emi.c romstage-y += flash_controller.c romstage-y += ../common/gpio.c gpio.c -romstage-y += ../common/mmu_operations.c +romstage-y += ../common/mmu_operations.c mmu_operations.c romstage-y += memory.c dramc_param.c ../common/memory_test.c romstage-$(CONFIG_SPI_FLASH) += ../common/spi.c spi.c romstage-y += ../common/timer.c diff --git a/src/soc/mediatek/mt8192/include/soc/memlayout.ld b/src/soc/mediatek/mt8192/include/soc/memlayout.ld index 57b258c32c..c016d5faa7 100644 --- a/src/soc/mediatek/mt8192/include/soc/memlayout.ld +++ b/src/soc/mediatek/mt8192/include/soc/memlayout.ld @@ -14,6 +14,11 @@ #define DRAM_INIT_CODE(addr, size) \ REGION(dram_init_code, addr, size, 4) +#define DRAM_DMA(addr, size) \ + REGION(dram_dma, addr, size, 4K) \ + _ = ASSERT(size % 4K == 0, \ + "DRAM DMA buffer should be multiple of smallest page size (4K)!"); + SECTIONS { SRAM_START(0x00100000) @@ -41,8 +46,9 @@ SECTIONS SRAM_L2C_END(0x00280000) DRAM_START(0x40000000) - POSTRAM_CBFS_CACHE(0x40000000, 2M) - RAMSTAGE(0x40200000, 256K) + DRAM_DMA(0x40000000, 1M) + POSTRAM_CBFS_CACHE(0x40100000, 2M) + RAMSTAGE(0x40300000, 256K) BL31(0x54600000, 0x60000) } diff --git a/src/soc/mediatek/mt8192/include/soc/symbols.h b/src/soc/mediatek/mt8192/include/soc/symbols.h new file mode 100644 index 0000000000..a7feee7ea0 --- /dev/null +++ b/src/soc/mediatek/mt8192/include/soc/symbols.h @@ -0,0 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef _SOC_MEDIATEK_MT8192_SYMBOLS_H_ +#define _SOC_MEDIATEK_MT8192_SYMBOLS_H_ +#include <symbols.h> + +DECLARE_REGION(dram_dma) + +#endif /* _SOC_MEDIATEK_MT8192_SYMBOLS_H_ */ diff --git a/src/soc/mediatek/mt8192/mmu_operations.c b/src/soc/mediatek/mt8192/mmu_operations.c index fb3620eb82..e3bc62282d 100644 --- a/src/soc/mediatek/mt8192/mmu_operations.c +++ b/src/soc/mediatek/mt8192/mmu_operations.c @@ -3,6 +3,7 @@ #include <device/mmio.h> #include <soc/mcucfg.h> #include <soc/mmu_operations.h> +#include <soc/symbols.h> DEFINE_BIT(MP0_CLUSTER_CFG0_L3_SHARE_EN, 9) DEFINE_BIT(MP0_CLUSTER_CFG0_L3_SHARE_PRE_EN, 8) @@ -28,3 +29,10 @@ void mtk_soc_disable_l2c_sram(void) MP0_CLUSTER_CFG0_L3_SHARE_PRE_EN, 0); dsb(); } + +/* mtk_soc_after_dram is called in romstage */ +void mtk_soc_after_dram(void) +{ + mmu_config_range(_dram_dma, REGION_SIZE(dram_dma), + NONSECURE_UNCACHED_MEM); +} |