125 lines
4.1 KiB
Plaintext
125 lines
4.1 KiB
Plaintext
#
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# U-Boot bootscript for EMMC/SD images created by Yocto.
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#
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# As the first step in the boot script, check if we are using DualBoot and
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# if an upgrade is available. This requires the script to change some variables
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# and save them, while the rest of the script changes variables only temporarily
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# without saving them.
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# Build boot attempt message string
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if test "${bootlimit}" -gt 0 && test "${bootcount}" -gt 0; then
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bootattempt="(boot attempt ${bootcount}/${bootlimit})"
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fi
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# Dual boot update verification (only on EMMC)
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if test "${mmcbootdev}" = "${emmc_dev}" && test "${dualboot}" = "yes"; then
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if test "${upgrade_available}" = "1"; then
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echo "Update detected; Booting new system in ${active_system} ${bootattempt}"
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else
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if test "${active_system}" = "linux_a"; then
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echo "Booting from system A"
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part number mmc ${mmcbootdev} linux_a tmp_mmcpart
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part number mmc ${mmcbootdev} rootfs_a tmp_rootfs_index
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else
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echo "Booting from system B"
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part number mmc ${mmcbootdev} linux_b tmp_mmcpart
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part number mmc ${mmcbootdev} rootfs_b tmp_rootfs_index
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fi
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part uuid mmc ${mmcbootdev}:${tmp_rootfs_index} tmp_mmcroot
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if test "${mmcpart}" -ne "${tmp_mmcpart}"; then
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setexpr mmcpart ${tmp_mmcpart}
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env_save_needed="1"
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fi
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if test "${mmcroot}" != "PARTUUID=${tmp_mmcroot}"; then
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setenv mmcroot PARTUUID=${tmp_mmcroot}
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env_save_needed="1"
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fi
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if test "${env_save_needed}" = "1"; then
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env delete tmp_mmcpart tmp_rootfs_index tmp_mmcroot
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env save
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fi
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fi
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else
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# Get the UUID of the configured boot partition.
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part uuid mmc ${mmcbootdev}:${mmcpart} bootpart
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# Check the boot source.
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if test "${bootpart}" = "${part1_uuid}"; then
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# We are booting from the eMMC using 'linux'.
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true
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elif test "${bootpart}" = "${part2_uuid}"; then
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# We are booting from the eMMC using 'recovery'.
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setenv boot_initrd true
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setenv initrd_file uramdisk-recovery.img
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else
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# SD boot (MBR partition table)
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setenv mmcroot /dev/mmcblk${mmcbootdev}p2
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fi
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if test "${upgrade_available}" = "1"; then
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echo "Update detected; Booting new system ${bootattempt}"
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fi
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fi
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# Back up environment variables
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setenv ORIG_extra_bootargs ${extra_bootargs}
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#
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# Set device tree filename depending on the board ID (if defined)
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#
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if test -n "${board_id}"; then
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setenv fdt_file ${soc_family}-ccimx6sbc-id${board_id}.dtb
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else
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#
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# Set device tree filename depending on the hardware variant
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#
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if test "${module_variant}" = "0x02"; then
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setenv fdt_file imx6q-ccimx6sbc-wb.dtb
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elif test "${module_variant}" = "0x03"; then
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setenv fdt_file imx6q-ccimx6sbc-wb.dtb
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elif test "${module_variant}" = "0x04"; then
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setenv fdt_file imx6q-ccimx6sbc-wb.dtb
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elif test "${module_variant}" = "0x05"; then
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setenv fdt_file imx6q-ccimx6sbc-w.dtb
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elif test "${module_variant}" = "0x06"; then
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setenv fdt_file imx6q-ccimx6sbc-wb.dtb
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elif test "${module_variant}" = "0x08"; then
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setenv fdt_file imx6q-ccimx6sbc.dtb
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elif test "${module_variant}" = "0x0a"; then
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setenv fdt_file imx6dl-ccimx6sbc-w.dtb
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elif test "${module_variant}" = "0x0b"; then
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setenv fdt_file imx6dl-ccimx6sbc-wb.dtb
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elif test "${module_variant}" = "0x0c"; then
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setenv fdt_file imx6dl-ccimx6sbc.dtb
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elif test "${module_variant}" = "0x0e"; then
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setenv fdt_file imx6q-ccimx6sbc.dtb
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elif test "${module_variant}" = "0x0f"; then
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setenv fdt_file imx6q-ccimx6sbc.dtb
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elif test "${module_variant}" = "0x11"; then
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setenv fdt_file imx6q-ccimx6sbc-wb.dtb
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elif test "${module_variant}" = "0x12"; then
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setenv fdt_file imx6q-ccimx6sbc-wb.dtb
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elif test "${module_variant}" = "0x13"; then
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setenv fdt_file imx6dl-ccimx6sbc-wb.dtb
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elif test "${module_variant}" = "0x14"; then
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setenv fdt_file imx6q-ccimx6sbc.dtb
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elif test "${module_variant}" = "0x15"; then
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setenv fdt_file imx6dl-ccimx6sbc.dtb
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elif test "${module_variant}" = "0x16"; then
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setenv fdt_file imx6q-ccimx6sbc-wb.dtb
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else
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setenv fdt_file imx6q-ccimx6sbc-wb.dtb
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fi
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fi
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setenv extra_bootargs fbcon=logo-pos:center fbcon=logo-count:1 ${extra_bootargs}
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dboot linux mmc ${mmcbootdev}:${mmcpart}
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# We only get here in case of an error on the dboot command.
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# Undo changes to environment variables
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setenv extra_bootargs ${ORIG_extra_bootargs}
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setenv ORIG_extra_bootargs
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