On 05/30/2016 04:11 PM, Michal Simek wrote:
Setup flag when default environment are used to be able to
rewrite default distro boot variables based on SoC boot mode.
Signed-off-by: Michal Simek <michal.si...@xilinx.com>
---
I didn't find any way how to detect that default or saved variables are
used. I want to have a flag to be able to rewrite boot_targets variable
based on boot mode. Especially when SD boot mode is setup than SD should
be primary boot devices, etc.
When variables are saved boot_targets will be restored and SoC boot mode
will be ignored.
If you know better way how to do it, please let me know.
You may want to be able to do the same from inside a script, so I guess
we should better have this as an environment variable itself again.
There was a way to have environment variable reads return a value
directly from code rather than go via environment storage. I guess we
could expose the flag through that?
Or add an environment variable that we set in set_default_env() and
ignore that variable on saveenv. I'm not sure I like that option better
than your current one though.
Alex
---
common/env_common.c | 1 +
include/asm-generic/global_data.h | 1 +
2 files changed, 2 insertions(+)
diff --git a/common/env_common.c b/common/env_common.c
index af59c72e1fd7..13db7dc3f755 100644
--- a/common/env_common.c
+++ b/common/env_common.c
@@ -123,6 +123,7 @@ void set_default_env(const char *s)
error("Environment import failed: errno = %d\n", errno);
gd->flags |= GD_FLG_ENV_READY;
+ gd->flags |= GD_FLG_ENV_DEFAULT;
}
diff --git a/include/asm-generic/global_data.h b/include/asm-generic/global_data.h
index f2810a1bd75f..0abcbe4c0b3a 100644
--- a/include/asm-generic/global_data.h
+++ b/include/asm-generic/global_data.h
@@ -141,5 +141,6 @@ typedef struct global_data {
#define GD_FLG_SPL_INIT 0x00400 /* spl_init() has been called
*/
#define GD_FLG_SKIP_RELOC 0x00800 /* Don't relocate */
#define GD_FLG_RECORD 0x01000 /* Record console */
+#define GD_FLG_ENV_DEFAULT 0x02000 /* Default variable flag */
#endif /* __ASM_GENERIC_GBL_DATA_H */
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