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acpi: Add an acpi command to list/dump generated ACPI items

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Add a command that shows the individual blocks of data generated by each
device, effectively splitting the full table into its component parts.
This can be helpful for debugging.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass
2020-07-07 13:12:12 -06:00
committed by Bin Meng
parent fefac0b064
commit a4f8208919
4 changed files with 84 additions and 2 deletions
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15
cmd/acpi.c
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@@ -153,6 +153,17 @@ static int do_acpi_list(struct cmd_tbl *cmdtp, int flag, int argc,
return 0;
}
static int do_acpi_items(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
bool dump_contents;
dump_contents = argc >= 2 && !strcmp("-d", argv[1]);
acpi_dump_items(dump_contents ? ACPI_DUMP_CONTENTS : ACPI_DUMP_LIST);
return 0;
}
static int do_acpi_dump(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
@@ -160,8 +171,6 @@ static int do_acpi_dump(struct cmd_tbl *cmdtp, int flag, int argc,
char sig[ACPI_NAME_LEN];
int ret;
if (argc < 2)
return CMD_RET_USAGE;
name = argv[1];
if (strlen(name) != ACPI_NAME_LEN) {
printf("Table name '%s' must be four characters\n", name);
@@ -179,8 +188,10 @@ static int do_acpi_dump(struct cmd_tbl *cmdtp, int flag, int argc,
static char acpi_help_text[] =
"list - list ACPI tables\n"
"acpi items [-d] - List/dump each piece of ACPI data from devices\n"
"acpi dump <name> - Dump ACPI table";
U_BOOT_CMD_WITH_SUBCMDS(acpi, "ACPI tables", acpi_help_text,
U_BOOT_SUBCMD_MKENT(list, 1, 1, do_acpi_list),
U_BOOT_SUBCMD_MKENT(items, 2, 1, do_acpi_items),
U_BOOT_SUBCMD_MKENT(dump, 2, 1, do_acpi_dump));