From c2a4af5ca8032d69818bac6d4030233af50f09a9 Mon Sep 17 00:00:00 2001 From: Angus Ainslie Date: Sun, 28 Nov 2021 08:02:52 -0800 Subject: [PATCH] cmd: fuse: add a fuse comparison function Compare a hexval to the fuse value and return pass or fail. Signed-off-by: Angus Ainslie --- cmd/fuse.c | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/cmd/fuse.c b/cmd/fuse.c index e001619d17..78b1065d99 100644 --- 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 [] - read 1 or 'cnt' fuse words,\n" " starting at 'word'\n" + "fuse cmp - compare 'hexval' to fuse\n" + " at 'word'\n" "fuse sense [] - sense 1 or 'cnt' fuse words,\n" " starting at 'word'\n" "fuse prog [-y] [...] - program 1 or\n" -- 2.39.5