[U-Boot] [PATCH V3 27/27] imx: Add i.MX8MM EVK board support.

[Tim Harvey]

On Mon, Aug 26, 2019 at 11:28 PM Peng Fan <peng.fan at nxp.com> wrote:
>
<snip>
> diff --git a/board/freescale/imx8mm_evk/README b/board/freescale/imx8mm_evk/README
> new file mode 100644
> index 0000000000..a885bc5c97
> --- /dev/null
> +++ b/board/freescale/imx8mm_evk/README

Hi Peng,

I'm working with an IMX8MM with U-Boot master + your v3
i.MX8MM-support series. I have a few comments and questions below.

> @@ -0,0 +1,37 @@
> +U-Boot for the NXP i.MX8MM EVK board
> +
> +Quick Start
> +===========
> +- Build the ARM Trusted firmware binary
> +- Get ddr fimware
> +- 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_1.0.0
> +$ make PLAT=imx8mm bl31
> +$ cp build/imx8mm/release/bl31.bin $(srctree)
> +
> +Get the ddr and hdmi firmware

There is no HDMI on i.MX8MM so remove 'hdmi' above

> +=============================
> +$ wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.0.bin
> +$ chmod +x firmware-imx-8.0.bin
> +$ ./firmware-imx-8.0
> +$ cp firmware-imx-7.9/firmware/ddr/synopsys/lpddr4*.bin $(srctree)

typo: cp firmware-imx-8.0

> +
> +Build U-Boot
> +============
> +$ export CROSS_COMPILE=aarch64-poky-linux-
> +$ make imx8mm_evk_defconfig
> +$ export ATF_LOAD_ADDR=0x920000
> +$ make flash.bin

Build fails due to default_serial_console undefined. Did you need to
enable DM_SERIAL?

After enabling DM_SERIAL build fails during image creation:

  MKIMAGE u-boot.itb
./tools/imx8m_image.sh spl/u-boot-spl.cfgout 1
26061+0 records in
26061+0 records out
104244 bytes (104 kB, 102 KiB) copied, 0.0458568 s, 2.3 MB/s
  MKIMAGE flash.bin
Not support no fit
arch/arm/mach-imx/Makefile:151: recipe for target 'flash.bin' failed

If I hack using_fit=1 into tools/imx8mimage.c I can build flash.bin
but it does not boot.

Am I missing some additional necessary patches to tools?

Best Regards,

Tim

> +
> +Burn the flash.bin to MicroSD card offset 33KB
> +$sudo dd if=flash.bin of=/dev/sd[x] bs=1024 seek=33
> +
> +Boot
> +====
> +Set Boot switch to SD boot