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authorSimon Glass <sjg@chromium.org>2013-04-20 08:42:43 +0000
committerTom Rini <trini@ti.com>2013-05-01 11:17:21 -0400
commit76b8f79c299ee8029c64c14a65cb0615bad77319 (patch)
tree083278d0544b8f486c3224fcff4703ebaafd40c5 /common/cmd_nvedit.c
parentd14da91307d8378ea9a99044165e83b79dec67a1 (diff)
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Add getenv_hex() to return an environment variable as hex
This conversion is required in a number of places in U-Boot. Add a standard function to provide this feature, so we avoid all the different variations in the way it is coded. Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'common/cmd_nvedit.c')
-rw-r--r--common/cmd_nvedit.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c
index 68b0f4f..d893aa1 100644
--- a/common/cmd_nvedit.c
+++ b/common/cmd_nvedit.c
@@ -315,6 +315,21 @@ int setenv_hex(const char *varname, ulong value)
return setenv(varname, str);
}
+ulong getenv_hex(const char *varname, ulong default_val)
+{
+ const char *s;
+ ulong value;
+ char *endp;
+
+ s = getenv(varname);
+ if (s)
+ value = simple_strtoul(s, &endp, 16);
+ if (!s || endp == s)
+ return default_val;
+
+ return value;
+}
+
#ifndef CONFIG_SPL_BUILD
static int do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{