[U-Boot] [PATCH 2/2] efi_loader: Fall back to fdtfile naming convention

Alexander Graf
2016-04-13T21:22:26Z

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>
---
include/config_distro_bootcmd.h | 24 +++++++++++++++++++++---
include/config_distro_defaults.h | 1 +
2 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/include/config_distro_bootcmd.h b/include/config_distro_bootcmd.h
index 67eb8f2..eaaf2cc 100644
--- a/include/config_distro_bootcmd.h
+++ b/include/config_distro_bootcmd.h
@@ -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 efifdtfile ${soc}-${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} ${prefix}${efifdtfile}\0" \
\
"efi_dtb_prefixes=/ /dtb/ /dtb/current/\0" \
"scan_dev_for_efi=" \
+ "setenv efifdtfile ${fdtfile}; " \
+ BOOTENV_EFI_SET_FDTFILE_FALLBACK \
"for prefix in ${efi_dtb_prefixes}; do " \
"if test -e ${devtype} " \
"${devnum}:${distro_bootpart} " \
- "${prefix}${fdtfile}; then " \
+ "${prefix}${efifdtfile}; 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 efifdtfile\0"
#define SCAN_DEV_FOR_EFI "run scan_dev_for_efi;"
#else
#define BOOTENV_SHARED_EFI
diff --git a/include/config_distro_defaults.h b/include/config_distro_defaults.h
index 076be4d..ae68e3a 100644
--- a/include/config_distro_defaults.h
+++ b/include/config_distro_defaults.h
@@ -65,5 +65,6 @@
#define CONFIG_ISO_PARTITION
#define CONFIG_SUPPORT_RAW_INITRD
#define CONFIG_SYS_HUSH_PARSER
+#define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG

#endif /* _CONFIG_CMD_DISTRO_DEFAULTS_H */
--
1.8.5.6