diff options
| author | Yidi Lin <yidi.lin@mediatek.com> | 2020-12-02 16:43:43 +0800 |
|---|---|---|
| committer | Hung-Te Lin <hungte@chromium.org> | 2020-12-10 03:22:01 +0000 |
| commit | c221d56478ddb1a364048ea2eb74cb26284eedf8 (patch) | |
| tree | dc82e57e3bd89cf0004e511b58d5404c95e6bd44 /src | |
| parent | 7ba377511420e99575b3ae74d67e2c63e7700ecd (diff) | |
soc/mediatek/mt8183: Add DRAM_DMA section
mtk_init_mcu uses DRAM_DMA section as CBFS buffer.
The change "mediatek/mt8183: Remove DRAM_DMA section" is reverted
for using mtk_init_mcu.
On mt8173 and mt8192, this region is used by DMA hardware and is
marked as non-cacheable resource. On mt8183, this region is reserved
as CBFS buffer, so it is not necessary to be marked as non-cacheable
resource.
Change-Id: I7ce9f68883e2787ee7f3c5066f4c47c5ca315633
Signed-off-by: Yidi Lin <yidi.lin@mediatek.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48232
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/mediatek/mt8183/include/soc/symbols.h | 9 | ||||
| -rw-r--r-- | src/soc/mediatek/mt8183/memlayout.ld | 8 |
2 files changed, 16 insertions, 1 deletions
diff --git a/src/soc/mediatek/mt8183/include/soc/symbols.h b/src/soc/mediatek/mt8183/include/soc/symbols.h new file mode 100644 index 0000000000..2c281b4e6a --- /dev/null +++ b/src/soc/mediatek/mt8183/include/soc/symbols.h @@ -0,0 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef _SOC_MEDIATEK_MT8183_SYMBOLS_H_ +#define _SOC_MEDIATEK_MT8183_SYMBOLS_H_ +#include <symbols.h> + +DECLARE_REGION(dram_dma) + +#endif /* _SOC_MEDIATEK_MT8183_SYMBOLS_H_ */ diff --git a/src/soc/mediatek/mt8183/memlayout.ld b/src/soc/mediatek/mt8183/memlayout.ld index db566665c2..a549274376 100644 --- a/src/soc/mediatek/mt8183/memlayout.ld +++ b/src/soc/mediatek/mt8183/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) @@ -37,7 +42,8 @@ SECTIONS SRAM_L2C_END(0x00280000) DRAM_START(0x40000000) - POSTRAM_CBFS_CACHE(0x40000000, 2M) + DRAM_DMA(0x40000000, 1M) + POSTRAM_CBFS_CACHE(0x40100000, 1M) RAMSTAGE(0x40200000, 256K) BL31(0x54600000, 0x60000) |