common, itest: pass u-boot env variables to itest.s
compare two U-Boot Environment variables with itest.s, example:
=> print tmp ver
tmp=U-Boot 2013.10-g75e
ver=U-Boot 2013.10-g75eb4bc (Jan 21 2014 - 10:35:39)MPC83XX
=> print check_ub_ver
check_ub_ver=if itest.s \${tmp} == \${ver}; then echo equal; else echo diff ;fi
=> run check_ub_ver
diff
=> setenv tmp U-Boot 2013.10-g75eb4bc (Jan 21 2014 - 10:35:39)MPC83XX
=> print tmp ver
tmp=U-Boot 2013.10-g75eb4bc (Jan 21 2014 - 10:35:39)MPC83XX
ver=U-Boot 2013.10-g75eb4bc (Jan 21 2014 - 10:35:39)MPC83XX
=> run check_ub_ver
equal
Signed-off-by: Heiko Schocher <hs@denx.de>
diff --git a/common/cmd_itest.c b/common/cmd_itest.c
index 29f8076..ae2527b 100644
--- a/common/cmd_itest.c
+++ b/common/cmd_itest.c
@@ -71,6 +71,19 @@
/* if the parameter starts with a * then assume a string pointer else its a literal */
if (s[0] == '*') {
return (char *)simple_strtoul(&s[1], NULL, 16);
+ } else if (s[0] == '$') {
+ int i = 2;
+
+ if (s[1] != '{')
+ return NULL;
+
+ while (s[i] != '}') {
+ if (s[i] == 0)
+ return NULL;
+ i++;
+ }
+ s[i] = 0;
+ return getenv((const char *)&s[2]);
} else {
return s;
}