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u-boot/board/ronetix/imx8mq-cm
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Shiji Yang 506df9dc58 treewide: rework linker symbol declarations in sections header 
1. Convert all linker symbols to char[] type so that we can get the
   corresponding address by calling array name 'var' or its address
   '&var'. In this way, we can avoid some potential issues[1].
2. Remove unused symbol '_TEXT_BASE'. It has been abandoned and has
   not been referenced by any source code.
3. Move '__data_end' to the arch x86's own sections header as it's
   only used by x86 arch.
4. Remove some duplicate declared linker symbols. Now we use the
   standard header file to declare them.

[1] This patch fixes the boot failure on MIPS target. Error log:
SPL: Image overlaps SPL

Fixes: 1b8a1be1a1 ("spl: spl_legacy: Fix spl_end address")
Signed-off-by: Shiji Yang <yangshiji66@outlook.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2023-08-09 09:21:42 -04:00
..
imx8mq_cm.c
imximage-8mq-lpddr4.cfg imx: Don't define __ASSEMBLY__ in source files 2022-02-08 23:07:58 -05:00
Kconfig
lpddr4_timing.c
MAINTAINERS
Makefile
README imx: Suggest the NXP ATF github repo 2023-01-31 16:02:05 +01:00
spl.c treewide: rework linker symbol declarations in sections header 2023-08-09 09:21:42 -04:00

README 

U-Boot for the Ronetix i.MX8MQ-CM board

Quick Start
===========
- Build the ARM Trusted firmware binary
- Get ddr firmware
- Build U-Boot
- Boot

Get and Build the ARM Trusted firmware
======================================
$ git clone https://github.com/nxp-imx/imx-atf
$ cd imx-atf
$ git checkout imx_4.19.35_1.0.0
$ make PLAT=imx8mq bl31
$ cd ..
$ cp imx-atf/build/imx8mq/release/bl31.bin .

Get the ddr firmware
====================
$ wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.9.bin
$ chmod +x firmware-imx-8.9.bin
$ ./firmware-imx-8.9.bin
$ cp firmware-imx-8.9/firmware/ddr/synopsys/lpddr4*.bin .

Build U-Boot
============
$ /opt/cross/aarch64-ronetix-linux-9.2/bin/aarch64-ronetix-linux-gnu-
$ make imx8mq_cm_defconfig
$ make

Burn the flash.bin to MicroSD card offset 33KB
==============================================
$sudo dd if=flash.bin of=/dev/sd[x] bs=1024 seek=33 conv=sync
$sudo dd if=u-boot.itb of=/dev/sd[x] bs=1024 seek=384 conv=sync

Boot
====
Set Boot switch on base board iMX8M-MB to SD boot:
    SW1[8:1]: OFF OFF OFF ON - OFF ON OFF OFF
    SW4[2:1]: OFF OFF
    J4: 1,2 - open; 3,4 - close; 5,6 - open