cmd: fuse: add a fuse comparison function

Compare a hexval to the fuse value and return pass or fail.

Signed-off-by: Angus Ainslie <angus@akkea.ca>

diff --git a/cmd/fuse.c b/cmd/fuse.c
index e001619d17200de9884b40575526b7064b15fec7..78b1065d99e2e481abe8441448f113c53134d707 100644 (file)
--- a/cmd/fuse.c
+++ b/cmd/fuse.c
@@ -45,7 +45,7 @@ static int do_fuse(struct cmd_tbl *cmdtp, int flag, int argc,
 {
        const char *op = argc >= 2 ? argv[1] : NULL;
        int confirmed = argc >= 3 && !strcmp(argv[2], "-y");
-       u32 bank, word, cnt, val;
+       u32 bank, word, cnt, val, cmp;
        int ret, i;
 
        argc -= 2 + confirmed;
@@ -73,6 +73,24 @@ static int do_fuse(struct cmd_tbl *cmdtp, int flag, int argc,
                        printf(" %.8x", val);
                }
                putc('\n');
+       } else if (!strcmp(op, "cmp")) {
+               if (argc != 3 || strtou32(argv[2], 0, &cmp))
+                       return CMD_RET_USAGE;
+
+               printf("Comparing bank %u:\n", bank);
+               printf("\nWord 0x%.8x:", word);
+               printf("\nValue 0x%.8x:", cmp);
+
+               ret = fuse_read(bank, word, &val);
+               if (ret)
+                       goto err;
+
+               printf("0x%.8x\n", val);
+               if (val != cmp) {
+                       printf("failed\n");
+                       return CMD_RET_FAILURE;
+               }
+               printf("passed\n");
        } else if (!strcmp(op, "sense")) {
                if (argc == 2)
                        cnt = 1;
@@ -137,6 +155,8 @@ U_BOOT_CMD(
        "Fuse sub-system",
             "read <bank> <word> [<cnt>] - read 1 or 'cnt' fuse words,\n"
        "    starting at 'word'\n"
+       "fuse cmp <bank> <word> <hexval> - compare 'hexval' to fuse\n"
+       "    at 'word'\n"
        "fuse sense <bank> <word> [<cnt>] - sense 1 or 'cnt' fuse words,\n"
        "    starting at 'word'\n"
        "fuse prog [-y] <bank> <word> <hexval> [<hexval>...] - program 1 or\n"