From patchwork Fri Mar 27 10:28:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Igor Opaniuk X-Patchwork-Id: 244421 List-Id: U-Boot discussion From: igor.opaniuk at gmail.com (Igor Opaniuk) Date: Fri, 27 Mar 2020 12:28:18 +0200 Subject: [PATCH v2 06/13] verdin-imx8mm: adjust dram size in case bl32 is used In-Reply-To: <20200327102825.10230-1-igor.opaniuk@gmail.com> References: <20200327102825.10230-1-igor.opaniuk@gmail.com> Message-ID: <20200327102825.10230-7-igor.opaniuk@gmail.com> From: Igor Opaniuk 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 --- 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 #include +#include #include #include #include @@ -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; }