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-rw-r--r--src/soc/mediatek/mt8192/Makefile.inc2
-rw-r--r--src/soc/mediatek/mt8192/include/soc/memlayout.ld10
-rw-r--r--src/soc/mediatek/mt8192/include/soc/symbols.h9
-rw-r--r--src/soc/mediatek/mt8192/mmu_operations.c8
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);
+}