Set ptuuid and fsuuid variables to the partition / filesystem
where we found extlinux.conf which allows us to use a replaceable
parameter in the append line in extlinux.conf like this
append root=PARTUUID=${ptuuid}
this means we never have to hardcode a root=/dev/mmcblk0p1 type path
anywhere.
Signed-off-by: Iain Paton <ipat...@gmail.com>
---
Since the uuids are only looked for after we've already found extlinux.conf
there's little cost/risk to making them available.
I realise that assuming extlinux.conf is on the root partition isn't perfect
but for the common case where it will be, there are many advantages to
this.
include/config_distro_bootcmd.h | 2 ++
include/config_distro_defaults.h | 4 ++++
2 files changed, 6 insertions(+)
diff --git a/include/config_distro_bootcmd.h b/include/config_distro_bootcmd.h
index be616e8..dd4ab09 100644
--- a/include/config_distro_bootcmd.h
+++ b/include/config_distro_bootcmd.h
@@ -166,6 +166,8 @@
"bootpart=1\0" \
\
"boot_extlinux=" \
+ "part uuid ${devtype} ${devnum}:${bootpart} ptuuid; " \
+ "fsuuid ${devtype} ${devnum}:${bootpart} fsuuid; " \
"sysboot ${devtype} ${devnum}:${bootpart} any " \
"${scriptaddr} ${prefix}extlinux/extlinux.conf\0" \
\
diff --git a/include/config_distro_defaults.h b/include/config_distro_defaults.h
index 1ecc0bb..03e1efb 100644
--- a/include/config_distro_defaults.h
+++ b/include/config_distro_defaults.h
@@ -38,8 +38,10 @@
#define CONFIG_CMD_EXT4
#define CONFIG_CMD_FAT
#define CONFIG_CMD_FS_GENERIC
+#define CONFIG_CMD_FS_UUID
#define CONFIG_CMD_MII
#define CONFIG_CMD_NET
+#define CONFIG_CMD_PART
#define CONFIG_CMD_PING
#define CONFIG_CMD_PXE
@@ -53,4 +55,6 @@
#define CONFIG_SUPPORT_RAW_INITRD
#define CONFIG_SYS_HUSH_PARSER
+#define CONFIG_PARTITION_UUIDS
+
#endif /* _CONFIG_CMD_DISTRO_DEFAULTS_H */
--
2.1.3
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