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configs: e850-96: Enable Standard Boot

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Enable Standard Boot on E850-96 as documented in [1]. Along with
corresponding changes in the default environment and properly prepared
eMMC partitions (ESP and rootfs), it makes it possible to boot Debian
rootfs automatically. All boot methods were tested: efi_mgr, efi,
syslinux and script. The preferred boot method is efi_mgr, which relies
on the configured EFI variables (stored in /ubootefi.var file on ESP
partition), which boots either GRUB from /EFI/debian/grubaa64.efi, or
systemd-boot from /EFI/BOOT/BOOTAA64.EFI. Currently used boot sequence:

  U-Boot -> bootcmd -> 'bootflow scan -lb' -> efi_mgr -> GRUB -> Debian

[1] doc/develop/bootstd/overview.rst

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Sam Protsenko 2025-01-16 17:01:27 -06:00 • committed by Minkyu Kang
parent 922c68563a
commit 3040406328
1 changed files with 1 additions and 3 deletions
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4
configs/e850-96_defconfig
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@ -16,17 +16,15 @@ CONFIG_ENV_OFFSET_REDUND=0x10000
# CONFIG_PSCI_RESET is not set
CONFIG_EFI_SET_TIME=y
CONFIG_ANDROID_BOOT_IMAGE=y
# CONFIG_AUTOBOOT is not set
CONFIG_BOOTSTD_FULL=y
CONFIG_DEFAULT_FDT_FILE="exynos850-e850-96.dtb"
# CONFIG_DISPLAY_CPUINFO is not set
CONFIG_HUSH_PARSER=y
CONFIG_CMD_BOOTEFI_SELFTEST=y
CONFIG_CMD_ABOOTIMG=y
CONFIG_CMD_NVEDIT_EFI=y
CONFIG_CMD_CLK=y
CONFIG_CMD_GPT=y
CONFIG_CMD_MMC=y
CONFIG_CMD_PART=y
CONFIG_CMD_EFIDEBUG=y
# CONFIG_CMD_DATE is not set
CONFIG_CMD_RTC=y