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efi_loader: Fall back to fdtfile naming convention

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When there is no $fdtfile variable set, we still have a good chance
that on 32bit arm the fdtfile really is just called $soc-$board.dtb.

Enable the exports for $soc and $board in our distr defaults and make
use of them in the efi boot script.

Reported-by: Andreas Faerber <afaerber@suse.de>
Reported-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Andreas Färber <afaerber@suse.de>
This commit is contained in:
Alexander Graf 2016-04-14 16:07:54 +02:00 committed by Tom Rini
parent 1c39809b92
commit ff2545ab78
2 changed files with 22 additions and 3 deletions
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24
include/config_distro_bootcmd.h
View file

@ -99,6 +99,21 @@
#endif
#ifdef BOOTEFI_NAME
#if defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
/*
* On 32bit ARM systems there is a reasonable number of systems that follow
* the $soc-$board$boardver.dtb name scheme for their device trees. Use that
* scheme if we don't have an explicit fdtfile variable.
*/
#define BOOTENV_EFI_SET_FDTFILE_FALLBACK \
"if test -z \"${fdtfile}\" -a -n \"${soc}\"; then " \
"setenv efi_fdtfile ${soc}-${board}${boardver}.dtb; " \
"fi; "
#else
#define BOOTENV_EFI_SET_FDTFILE_FALLBACK
#endif
#define BOOTENV_SHARED_EFI \
"boot_efi_binary=" \
"load ${devtype} ${devnum}:${distro_bootpart} " \
@ -111,14 +126,16 @@
\
"load_efi_dtb=" \
"load ${devtype} ${devnum}:${distro_bootpart} " \
"${fdt_addr_r} ${prefix}${fdtfile}\0" \
"${fdt_addr_r} ${prefix}${efi_fdtfile}\0" \
\
"efi_dtb_prefixes=/ /dtb/ /dtb/current/\0" \
"scan_dev_for_efi=" \
"setenv efi_fdtfile ${fdtfile}; " \
BOOTENV_EFI_SET_FDTFILE_FALLBACK \
"for prefix in ${efi_dtb_prefixes}; do " \
"if test -e ${devtype} " \
"${devnum}:${distro_bootpart} " \
"${prefix}${fdtfile}; then " \
"${prefix}${efi_fdtfile}; then " \
"run load_efi_dtb; " \
"fi;" \
"done;" \
@ -128,7 +145,8 @@
"efi/boot/"BOOTEFI_NAME"; " \
"run boot_efi_binary; " \
"echo EFI LOAD FAILED: continuing...; " \
"fi; \0"
"fi; " \
"setenv efi_fdtfile\0"
#define SCAN_DEV_FOR_EFI "run scan_dev_for_efi;"
#else
#define BOOTENV_SHARED_EFI

1
include/config_distro_defaults.h
View file

@ -65,5 +65,6 @@
#define CONFIG_ISO_PARTITION
#define CONFIG_SUPPORT_RAW_INITRD
#define CONFIG_SYS_HUSH_PARSER
#define CONFIG_ENV_VARS_UBOOT_CONFIG
#endif /* _CONFIG_CMD_DISTRO_DEFAULTS_H */