From patchwork Fri Mar 27 10:28:19 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Igor Opaniuk X-Patchwork-Id: 244420 List-Id: U-Boot discussion From: igor.opaniuk at gmail.com (Igor Opaniuk) Date: Fri, 27 Mar 2020 12:28:19 +0200 Subject: [PATCH v2 07/13] imx8mm_evk: 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: <20200327102825.10230-8-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/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; }