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https://github.com/AsahiLinux/u-boot
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4ae1fa338b
Add instructions to build and boot from QSPI Flash Signed-off-by: Mamta Shukla <mamta.shukla@leica-geosystems.com> Signed-off-by: Thomas Haemmerle <thomas.haemmerle@leica-geosystems.com> Tested-by: Adam Ford <aford173@gmail.com> Reviewed-by: Fabio Estevam <festevam@denx.de>
89 lines
1.9 KiB
ReStructuredText
89 lines
1.9 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0+
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imx8mm_evk
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==========
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U-Boot for the NXP i.MX8MM EVK board
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Quick Start
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-----------
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- Build the ARM Trusted firmware binary
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- Get ddr firmware
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- Build U-Boot
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- Boot
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Get and Build the ARM Trusted firmware
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--------------------------------------
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Note: builddir is U-Boot build directory (source directory for in-tree builds)
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Get ATF from: https://source.codeaurora.org/external/imx/imx-atf
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branch: imx_5.4.47_2.2.0
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.. code-block:: bash
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$ make PLAT=imx8mm bl31
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$ cp build/imx8mm/release/bl31.bin $(builddir)
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Get the ddr firmware
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--------------------
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.. code-block:: bash
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$ wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.9.bin
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$ chmod +x firmware-imx-8.9.bin
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$ ./firmware-imx-8.9
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$ cp firmware-imx-8.9/firmware/ddr/synopsys/lpddr4*.bin $(builddir)
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Build U-Boot for sd card
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--------------------------
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.. code-block:: bash
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$ export CROSS_COMPILE=aarch64-poky-linux-
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$ make imx8mm_evk_defconfig
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$ make
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Burn the flash.bin to MicroSD card offset 33KB:
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.. code-block:: bash
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$sudo dd if=flash.bin of=/dev/sd[x] bs=1024 seek=33 conv=notrunc
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Boot
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----
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Set Boot switch to SD boot
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Build U-Boot for qspi flash card
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------------------------------------
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.. code-block:: bash
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$ export CROSS_COMPILE=aarch64-poky-linux-
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$ make imx8mm_evk_fspi_defconfig
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$ make
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Currently, there is no direct support to write to QSPI Flash.
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Copy flash.bin to ${loadaddr} either from sd card or over network and then copy to
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qspi flash
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From sd card to memory
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.. code-block:: bash
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$mmc dev 1
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$mmc read ${loadaddr} 0x00 <size_of_flash.bin/512>
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.. code-block:: bash
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$ sf probe
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$ sf erase 0 <size_of_flash.bin_in_hex>
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$ sf write $loadaddr 0x00 <size_of_flash.bin_in_hex>
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Boot from QSPI Flash
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-----------------------
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Set Boot Switch to QSPI Flash
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Pin configuration for imx8mm_revC evk to boot from qspi flash
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SW1101: 0110xxxxxx
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SW1102: 00100x0010
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