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https://github.com/AsahiLinux/u-boot
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Current codes assume the OPTEE address is at the end of first DRAM bank. Adjust the process to allow OPTEE in the middle of first bank. When OPTEE memory is removed from first bank, it may split the first bank to two banks, adjust the MMU table for the split case, Since the default CONFIG_NR_DRAM_BANKS is 4, it is enough, just enlarge i.MX8MP evk to default to avoid issue. Signed-off-by: Ye Li <ye.li@nxp.com> Signed-off-by: Silvano di Ninno <silvano.dininno@nxp.com> Tested-by: Silvano di Ninno <silvano.dininno@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com> |
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| .. | ||
| ddr4_timing.c | ||
| imx8mn_evk.c | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
| spl.c | ||
U-Boot for the NXP i.MX8MN EVK board Quick Start =========== - Build the ARM Trusted firmware binary - Get firmware-imx package - Build U-Boot - Boot Get and Build the ARM Trusted firmware ====================================== Note: srctree is U-Boot source directory Get ATF from: https://source.codeaurora.org/external/imx/imx-atf branch: imx_4.19.35_1.1.0 $ make PLAT=imx8mn bl31 $ cp build/imx8mn/release/bl31.bin $(srctree) Get the ddr firmware ============================= $ wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.5.bin $ chmod +x firmware-imx-8.5.bin $ ./firmware-imx-8.5 $ cp firmware-imx-8.5/firmware/ddr/synopsys/ddr4*.bin $(srctree) Build U-Boot ============ $ export CROSS_COMPILE=aarch64-poky-linux- $ make imx8mn_ddr4_evk_defconfig $ export ATF_LOAD_ADDR=0x960000 $ make flash.bin Burn the flash.bin to MicroSD card offset 32KB $sudo dd if=flash.bin of=/dev/sd[x] bs=1024 seek=32 Boot ==== Set Boot switch to SD boot