From 47d430baed16b35a1afc5ae2ae8c468de8d21efd Mon Sep 17 00:00:00 2001
From: Igor Opaniuk <igor.opaniuk@toradex.com>
Date: Fri, 27 Mar 2020 12:28:19 +0200
Subject: [PATCH] imx8mm_evk: 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>
---
board/freescale/imx8mm_evk/imx8mm_evk.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/board/freescale/imx8mm_evk/imx8mm_evk.c b/board/freescale/imx8mm_evk/imx8mm_evk.c
index c5fd940eeb..53ebb949df 100644
--- a/board/freescale/imx8mm_evk/imx8mm_evk.c
+++ b/board/freescale/imx8mm_evk/imx8mm_evk.c
@@ -15,7 +15,11 @@ DECLARE_GLOBAL_DATA_PTR;
int dram_init(void)
{
- gd->ram_size = 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;
}
--
2.39.5