Add a command to the ARM flash support to check if an image exists or
not.
If the image is found, it will return CMD_RET_SUCCESS, else
CMD_RET_FAILURE. This allows hush scripts to conditionally load images.
A simple example:
if afs exists ${kernel_name}; then echo found; else echo \
not found; fi
Signed-off-by: Ryan Harkin <ryan.har...@linaro.org>
Reviewed-by: Linus Walleij <linus.wall...@linaro.org>
CC: David Feng <feng...@phytium.com.cn>
CC: Bhupesh Sharma <bhupesh.sha...@freescale.com>
CC: Linus Walleij <linus.wall...@linaro.org>
---
common/cmd_armflash.c | 22 +++++++++++++++++++++-
1 file changed, 21 insertions(+), 1 deletion(-)
diff --git a/common/cmd_armflash.c b/common/cmd_armflash.c
index 1db92b0..a37f5c4 100644
--- a/common/cmd_armflash.c
+++ b/common/cmd_armflash.c
@@ -251,10 +251,28 @@ static void print_images(void)
}
}
+static int exists(const char * const name)
+{
+ int i;
+
+ parse_flash();
+ for (i = 0; i < num_afs_images; i++) {
+ struct afs_image *afi = &afs_images[i];
+
+ if (strcmp(afi->name, name) == 0)
+ return CMD_RET_SUCCESS;
+ }
+ return CMD_RET_FAILURE;
+}
+
static int do_afs(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
+ int ret = CMD_RET_SUCCESS;
+
if (argc == 1) {
print_images();
+ } else if (argc == 3 && !strcmp(argv[1], "exists")) {
+ ret = exists(argv[2]);
} else if (argc == 3 && !strcmp(argv[1], "load")) {
load_image(argv[2], 0x0);
} else if (argc == 4 && !strcmp(argv[1], "load")) {
@@ -266,12 +284,14 @@ static int do_afs(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
return CMD_RET_USAGE;
}
- return 0;
+ return ret;
}
U_BOOT_CMD(afs, 4, 0, do_afs, "show AFS partitions",
"no arguments\n"
" - list images in flash\n"
+ "exists <image>\n"
+ " - returns 1 if an image exists, else 0\n"
"load <image>\n"
" - load an image to the location indicated in the header\n"
"load <image> 0x<address>\n"
--
2.1.0
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