From: Igor Opaniuk igor.opaniuk@toradex.com
Adjust DRAM size in case BL32 secure payload is loaded (OP-TEE/Trusty), so during MMU initialization U-Boot won't touch this mem area.
BL32 is loaded to the end of DRAM, bl32 payload size is read from rom_pointer[1]. This relates to the issue described in 59efa6b52b("imx8m: Fix MMU table issue for OPTEE memory").
Signed-off-by: Igor Opaniuk igor.opaniuk@toradex.com ---
board/toradex/verdin-imx8mm/verdin-imx8mm.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/board/toradex/verdin-imx8mm/verdin-imx8mm.c b/board/toradex/verdin-imx8mm/verdin-imx8mm.c index 16b9fa1ec1..cb9b4e3b0a 100644 --- a/board/toradex/verdin-imx8mm/verdin-imx8mm.c +++ b/board/toradex/verdin-imx8mm/verdin-imx8mm.c @@ -5,6 +5,7 @@
#include <common.h> #include <asm/arch/clock.h> +#include <asm/arch/sys_proto.h> #include <asm/io.h> #include <miiphy.h> #include <netdev.h> @@ -13,7 +14,11 @@ DECLARE_GLOBAL_DATA_PTR;
int dram_init(void) { - gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE); + /* rom_pointer[1] contains the size of TEE occupies */ + if (rom_pointer[1]) + gd->ram_size = PHYS_SDRAM_SIZE - rom_pointer[1]; + else + gd->ram_size = PHYS_SDRAM_SIZE;
return 0; }