Boot Ultrazed From eMMC

I suspect something is broken in your u-boot settings and/or Image Packaging Configuration settings.  Can you attach your <project>/project-spec/meta-user/recipes-bsp/u-boot/files/platform-top.h file here?

Tom, I appreciate your very quick reply, thanks. The file contents is below:

#include <configs/platform-auto.h>

#define CONFIG_NR_DRAM_BANKS 3

#define CONFIG_SYS_BOOTM_LEN 0xF000000

#undef  CONFIG_SYS_BOOTMAPSZ

#define DFU_ALT_INFO_RAM \

                "dfu_ram_info=" \

        "setenv dfu_alt_info " \

        "image.ub ram $netstart 0x1e00000\0" \

        "dfu_ram=run dfu_ram_info && dfu 0 ram 0\0" \

        "thor_ram=run dfu_ram_info && thordown 0 ram 0\0"

#define DFU_ALT_INFO_MMC \

        "dfu_mmc_info=" \

        "set dfu_alt_info " \

        "${kernel_image} fat 0 1\\\\;" \

        "dfu_mmc=run dfu_mmc_info && dfu 0 mmc 0\0" \

        "thor_mmc=run dfu_mmc_info && thordown 0 mmc 0\0"

/*Required for uartless designs */

#ifndef CONFIG_BAUDRATE

#define CONFIG_BAUDRATE 115200

#ifdef CONFIG_DEBUG_UART

#undef CONFIG_DEBUG_UART

#endif

#endif

/* Extra U-Boot Env settings */

#define CONFIG_EXTRA_ENV_SETTINGS \

    SERIAL_MULTI \

    CONSOLE_ARG \

    PSSERIAL0 \

    "nc=setenv stdout nc;setenv stdin nc;\0" \

    "ethaddr=00:0a:35:00:22:01\0" \

    "importbootenv=echo \"Importing environment from SD ...\"; " \

        "env import -t ${loadbootenv_addr} $filesize\0" \

    "loadbootenv=load mmc $sdbootdev:$partid ${loadbootenv_addr} ${bootenv}\0" \

    "sd_uEnvtxt_existence_test=test -e mmc $sdbootdev:$partid /uEnv.txt\0" \

    "uenvboot=" \

        "if run sd_uEnvtxt_existence_test; then " \

            "run loadbootenv; " \ 

            "echo Loaded environment from ${bootenv}; " \

            "run importbootenv; " \

        "fi\0" \

    "sdboot=echo boot Petalinux; run uenvboot ; mmcinfo && fatload mmc 1 ${netstart} ${kernel_img} && bootm \0" \

    "autoload=no\0" \

    "clobstart=0x10000000\0" \

    "netstart=0x10000000\0" \

    "dtbnetstart=0x11800000\0" \

    "loadaddr=0x10000000\0" \

    "boot_img=BOOT.BIN\0" \

    "load_boot=tftpboot ${clobstart} ${boot_img}\0" \

    "update_boot=setenv img boot; setenv psize ${bootsize}; setenv installcmd \"install_boot\"; run load_boot ${installcmd}; setenv img; setenv psize; setenv installcmd\0" \

    "install_boot=mmcinfo && fatwrite mmc 0 ${clobstart} ${boot_img} ${filesize}\0" \

    "bootenvsize=0x40000\0" \

    "bootenvstart=0x1360000\0" \

    "eraseenv=sf probe 0 && sf erase ${bootenvstart} ${bootenvsize}\0" \

    "jffs2_img=rootfs.jffs2\0" \

    "load_jffs2=tftpboot ${clobstart} ${jffs2_img}\0" \

    "update_jffs2=setenv img jffs2; setenv psize ${jffs2size}; setenv installcmd \"install_jffs2\"; run load_jffs2 test_img; setenv img; setenv psize; setenv installcmd\0" \

    "sd_update_jffs2=echo Updating jffs2 from SD; mmcinfo && fatload mmc 0:1 ${clobstart} ${jffs2_img} && run install_jffs2\0" \

    "install_jffs2=sf probe 0 && sf erase ${jffs2start} ${jffs2size} && " \

        "sf write ${clobstart} ${jffs2start} ${filesize}\0" \

    "kernel_img=image.ub\0" \

    "load_kernel=tftpboot ${clobstart} ${kernel_img}\0" \

    "update_kernel=setenv img kernel; setenv psize ${kernelsize}; setenv installcmd \"install_kernel\"; run load_kernel ${installcmd}; setenv img; setenv psize; setenv installcmd\0" \

    "install_kernel=mmcinfo && fatwrite mmc 1 ${clobstart} ${kernel_img} ${filesize}\0" \

    "cp_kernel2ram=mmcinfo && fatload mmc 1 ${netstart} ${kernel_img}\0" \

    "dtb_img=system.dtb\0" \

    "load_dtb=tftpboot ${clobstart} ${dtb_img}\0" \

    "update_dtb=setenv img dtb; setenv psize ${dtbsize}; setenv installcmd \"install_dtb\"; run load_dtb test_img; setenv img; setenv psize; setenv installcmd\0" \

    "sd_update_dtb=echo Updating dtb from SD; mmcinfo && fatload mmc 0:1 ${clobstart} ${dtb_img} && run install_dtb\0" \

    "fault=echo ${img} image size is greater than allocated place - partition ${img} is NOT UPDATED\0" \

    "test_crc=if imi ${clobstart}; then run test_img; else echo ${img} Bad CRC - ${img} is NOT UPDATED; fi\0" \

    "test_img=setenv var \"if test ${filesize} -gt ${psize}\\; then run fault\\; else run ${installcmd}\\; fi\"; run var; setenv var\0" \

    "netboot=tftpboot ${netstart} ${kernel_img} && bootm\0" \

    "default_bootcmd=run cp_kernel2ram && bootm ${netstart}\0" \

""

After I found this post https://forums.xilinx.com/t5/Embedded-Linux/U-boot-How-to-set-the-default-mmc-device/m-p/777575#M20450  I could easily boot Ubuntu like this:

ZynqMP> load mmc 0 0x10000000 image.ub

18395704 bytes read in 1261 ms (13.9 MiB/s)

ZynqMP> bootm

## Loading kernel from FIT Image at 10000000 ...

   Using 'conf@system-top.dtb' configuration

...

However, the solution offered there is very ugly, so I simply run through platform-top.h and replaced all instances of "mmc 1 " with "mmc 0 " (but never touched "mmc 1:0" and it's booting now

I noticed the "mmc 1" looked incorrect in the u-boot snipped you posted.  This is likely an artifact of the last-built boot method from our BSP build script, and was incompatible with eMMC boot.  I am glad you got it working!

--Tom

A small detail, this is definitely not an artifact, because I just built my system from scratch and clearly showed that rootfs is on mmcblk0p2, but platform-top.h shows mmc 1:

""sdboot=echo boot Petalinux; run uenvboot ; mmcinfo && fatload mmc 1 ${netstart} ${kernel_img} && bootm \0" \ "

I think BSP setings could have higher priority than user selected options.