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x86: hob: Add way to show a single hob entry 

The 'hob' command currently lists all HOB entries. Add way to list a
single entry, by index.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2020-09-22 14:54:48 -06:00 committed by Bin Meng
parent 9c6aaf1347
commit d11544dfa9
1 changed files with 11 additions and 5 deletions
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16
cmd/x86/hob.c
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@ -34,7 +34,12 @@ static int do_hob(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
int i = 0; int i = 0;
efi_guid_t *guid; efi_guid_t *guid;
char uuid[UUID_STR_LEN + 1]; char uuid[UUID_STR_LEN + 1];
int seq = -1; /* Show all by default */
argc--;
argv++;
if (argc)
seq = simple_strtol(*argv, NULL, 16);
hdr = gd->arch.hob_list; hdr = gd->arch.hob_list;
printf("HOB list address: 0x%08x\n\n", (unsigned int)hdr); printf("HOB list address: 0x%08x\n\n", (unsigned int)hdr);
@ -43,7 +48,9 @@ static int do_hob(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
printf("%36s\n", "GUID"); printf("%36s\n", "GUID");
printf("---|----------|-----------|------|-"); printf("---|----------|-----------|------|-");
printf("------------------------------------\n"); printf("------------------------------------\n");
while (!end_of_hob(hdr)) { for (i = 0; !end_of_hob(hdr); i++, hdr = get_next_hob(hdr)) {
if (seq != -1 && seq != i)
continue;
printf("%02x | %08x | ", i, (unsigned int)hdr); printf("%02x | %08x | ", i, (unsigned int)hdr);
type = hdr->type; type = hdr->type;
if (type == HOB_TYPE_UNUSED) if (type == HOB_TYPE_UNUSED)
@ -65,14 +72,13 @@ static int do_hob(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
printf("%36s", "Not Available"); printf("%36s", "Not Available");
} }
printf("\n"); printf("\n");
hdr = get_next_hob(hdr);
i++;
} }
return 0; return 0;
} }
U_BOOT_CMD(hob, 1, 1, do_hob, U_BOOT_CMD(hob, 2, 1, do_hob,
"Print Hand-Off Block (HOB) information", "[seq] Print Hand-Off Block (HOB) information"
" seq - Record # to show (all by default)",
"" ""
); );