cmd: introduce 'write' command
It's almost no extra code to hook up a buddy to the 'read' command. In
fact, since the command is passed its own 'struct cmd_tbl', we can use
the exact same callback, and let it figure out for itself whether it
was invoked as "read" or "write".
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
diff --git a/cmd/read.c b/cmd/read.c
index 8645db4..1218e7a 100644
--- a/cmd/read.c
+++ b/cmd/read.c
@@ -13,14 +13,14 @@
#include <mapmem.h>
#include <part.h>
-int do_read(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
+static int
+do_rw(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
struct blk_desc *dev_desc = NULL;
struct disk_partition part_info;
ulong offset, limit;
+ uint blk, cnt, res;
void *addr;
- uint blk;
- uint cnt;
int part;
if (argc != 6) {
@@ -47,20 +47,35 @@
}
if (cnt + blk > limit) {
- printf("Read out of range\n");
+ printf("%s out of range\n", cmdtp->name);
return 1;
}
- if (blk_dread(dev_desc, offset + blk, cnt, addr) != cnt) {
- printf("Error reading blocks\n");
+ if (IS_ENABLED(CONFIG_CMD_WRITE) && !strcmp(cmdtp->name, "write"))
+ res = blk_dwrite(dev_desc, offset + blk, cnt, addr);
+ else
+ res = blk_dread(dev_desc, offset + blk, cnt, addr);
+
+ if (res != cnt) {
+ printf("%s error\n", cmdtp->name);
return 1;
}
return 0;
}
+#ifdef CONFIG_CMD_READ
U_BOOT_CMD(
- read, 6, 0, do_read,
+ read, 6, 0, do_rw,
"Load binary data from a partition",
"<interface> <dev[:part|#partname]> addr blk# cnt"
);
+#endif
+
+#ifdef CONFIG_CMD_WRITE
+U_BOOT_CMD(
+ write, 6, 0, do_rw,
+ "Store binary data to a partition",
+ "<interface> <dev[:part|#partname]> addr blk# cnt"
+);
+#endif