[U-Boot] [PATCH V2 22/23] imx: add i.MX8MQ EVK support

[Fabio Estevam]

On Mon, Dec 4, 2017 at 2:31 AM, Peng Fan <peng.fan at nxp.com> wrote:
> Add i.MX8MQ EVK support. SPL will initialize ddr and load ddr phy
> firmware. Then loading FIT image, ATF to OCRAM, U-Boot and DTB to
> DRAM.
>
> The boot log:
> "
> U-Boot SPL 2017.11-00062-gd4c7c3ebb3-dirty (Dec 01 2017 - 14:49:31)
> PMIC:  PFUZE100 ID=0x10
> check ddr4_pmu_train_imem code
> check ddr4_pmu_train_imem code pass
> check ddr4_pmu_train_dmem code
> check ddr4_pmu_train_dmem code pass
> PLL bypass to 100MTS setting done
> Training PASS
> PLL bypass to 400MTS setting done
> Training PASS
> Training PASS
> check ddr4_pmu_train_imem code
> check ddr4_pmu_train_imem code pass
> check ddr4_pmu_train_dmem code
> check ddr4_pmu_train_dmem code pass
> Training PASS

Please turn these messages into debug level. They are too noisy to
appear on every boot.


> diff --git a/board/freescale/mx8mq_evk/README b/board/freescale/mx8mq_evk/README
> new file mode 100644
> index 0000000000..6be5f51a22
> --- /dev/null
> +++ b/board/freescale/mx8mq_evk/README
> @@ -0,0 +1,38 @@
> +U-Boot for the NXP i.MX8MQ EVK board
> +
> +Quick Start
> +====================
> +- Build the ARM Trusted firmware binary
> +- Build U-Boot
> +- Generate flash.bin using imx-mkimage
> +- Boot
> +
> +Build the ARM Trusted firmware
> +====================
> +$ make PLAT=imx8mq bl31
> +
> +Build U-Boot
> +====================
> +$ export ARCH=arm64
> +$ export CROSS_COMPILE=aarch64-poky-linux-
> +$ make mx8mq_evk_defconfig
> +$ make
> +
> +Generate flash.bin using imx-mkimage

What is imx-mkimage? Why do you need a special tool and can't use the
official mkimage one?


> +====================
> +Copy bl31.bin u-boot-nodtb.bin u-boot-spl.bin fsl-imx8mq-evk.dtb to
> +     imx-mkimage/iMX8M
> +Copy lpddr4_pmu_train_1d_dmem.bin lpddr4_pmu_train_1d_imem.bin
> +     lpddr4_pmu_train_2d_dmem.bin lpddr4_pmu_train_2d_imem.bin to
> +     imx-mkimage/iMX8M
> +If you want to run with HDMI, copy signed_hdmi_imx8m.bin to imx-mkimage/iMX8M
> +
> +make SOC=iMX8M flash_spl_uboot or make SOC=iMX8M flash_hdmi_spl_uboot to
> +generate flash.bin.
> +
> +Burn the flash.bin to MicroSD card offset 33KB
> +$sudo dd if=iMX8M/flash.bin of=/dev/sd[x] bs=1024 seek=33
> +
> +Boot
> +====================
> +Set Boot switch SW801: 1100 and Bmode: 10 to boot from Micro SD.

Sorry, but this README simply does not work.

All these required firmwares and imx-mkimage are really confusing.
I am not able to get a bootable image by reading this README file.

Please improve the README so that a user can really make a bootable SD
card by following the described step by step sequence.

That's what the README is for :-)

Thanks