From 420577740f190a9bcc80270952b18c875dce9542 Mon Sep 17 00:00:00 2001 From: Oleksij Rempel Date: Tue, 2 Jun 2020 14:33:17 +0200 Subject: arm: boards: add initial imx8mp-evk support This adds support for the NXP i.MX8MP-EVK board. The SDRAM timings are taken from U-Boot-2020.07-rc4, other information how to initialize the board are form U-Boot as well. Signed-off-by: Oleksij Rempel Signed-off-by: Sascha Hauer --- Documentation/boards/imx/nxp-imx8mp-evk.rst | 65 +++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 Documentation/boards/imx/nxp-imx8mp-evk.rst (limited to 'Documentation') diff --git a/Documentation/boards/imx/nxp-imx8mp-evk.rst b/Documentation/boards/imx/nxp-imx8mp-evk.rst new file mode 100644 index 0000000000..fec366e0de --- /dev/null +++ b/Documentation/boards/imx/nxp-imx8mp-evk.rst @@ -0,0 +1,65 @@ +NXP i.MX8MP-EVK board +===================== + +The board comes with: + +* 6GiB of LPDDR4 RAM +* 32GiB eMMC + +Not including booting via serial, the device can boot from either SD or eMMC. + +Downloading DDR PHY firmware +---------------------------- + +As a part of DDR intialization routine NXP i.MX8MQ EVK requires and +uses several binary firmware blobs that are distributed under a +separate EULA and cannot be included in Barebox. In order to obtain +them do the following:: + + wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.7.bin + chmod +x firmware-imx-8.7.bin + ./firmware-imx-8.7.bin + +Executing that file should produce a EULA acceptance dialog as well as +result in the following files: + +- lpddr4_pmu_train_1d_dmem.bin +- lpddr4_pmu_train_1d_imem.bin +- lpddr4_pmu_train_2d_dmem.bin +- lpddr4_pmu_train_2d_imem.bin + +As a last step of this process those files need to be placed in +"firmware/":: + + for f in lpddr4_pmu_train_1d_dmem.bin \ + lpddr4_pmu_train_1d_imem.bin \ + lpddr4_pmu_train_2d_dmem.bin \ + lpddr4_pmu_train_2d_imem.bin; \ + do \ + cp firmware-imx-8.7/firmware/ddr/synopsys/${f} \ + firmware/${f}; \ + done + +Get and Build the ARM Trusted firmware +-------------------------------------- + +Get ATF from https://source.codeaurora.org/external/imx/imx-atf, branch +imx_5.4.3_2.0.0:: + + make PLAT=imx8mp bl31 + cp build/imx8mp/release/bl31.bin ${barebox_srctree}/imx8mp-bl31.bin + +Build Barebox +------------- + +i.MX8MP-EVK support is contained in the imx_v8_defconfig to build it use:: + + make imx_v8_defconfig + make + +Boot Configuration +------------------ + +The NXP i.MX8MP-EVK board has four switches responsible for configuring +bootsource/boot mode. The settings for the different boot sources are +printed on the board. -- cgit v1.2.3