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verdin-imx8mm: adjust dram size in case bl32 is used

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>
Igor Opaniuk 4 年之前
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f8ae0bc7c2
共有 1 个文件被更改,包括 6 次插入1 次删除
  1. 6 1
      board/toradex/verdin-imx8mm/verdin-imx8mm.c

+ 6 - 1
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;
 }