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x86: mtrr: Restructure so command execution is in one place

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At present do_mtrr() does the 'list' subcommand at the top and the rest
below. Update it to do them all in the same place so we can (in a later
patch) add parsing of the CPU number for all subcommands.

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 2020-07-17 08:48:28 -06:00 committed by Bin Meng
parent e68b12805b
commit b2a76b3fe7
1 changed files with 37 additions and 20 deletions
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57
cmd/x86/mtrr.c
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@ -98,31 +98,48 @@ static int do_mtrr_set(int cpu_select, uint reg, int argc, char *const argv[])
static int do_mtrr(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
const char *cmd;
int cmd;
int cpu_select;
uint reg;
int ret;
cpu_select = MP_SELECT_BSP;
cmd = argv[1];
if (argc < 2 || *cmd == 'l')
return do_mtrr_list(cpu_select);
argc -= 2;
argv += 2;
if (argc <= 0)
return CMD_RET_USAGE;
reg = simple_strtoul(argv[0], NULL, 16);
if (reg >= MTRR_COUNT) {
printf("Invalid register number\n");
return CMD_RET_USAGE;
argc--;
argv++;
cmd = argv[0] ? *argv[0] : 0;
if (argc < 1 || !cmd) {
cmd = 'l';
reg = 0;
} else {
if (argc < 2)
return CMD_RET_USAGE;
reg = simple_strtoul(argv[1], NULL, 16);
if (reg >= MTRR_COUNT) {
printf("Invalid register number\n");
return CMD_RET_USAGE;
}
}
if (cmd == 'l') {
return do_mtrr_list(cpu_select);
} else {
switch (cmd) {
case 'e':
ret = mtrr_set_valid(cpu_select, reg, true);
break;
case 'd':
ret = mtrr_set_valid(cpu_select, reg, false);
break;
case 's':
ret = do_mtrr_set(cpu_select, reg, argc - 2, argv + 2);
break;
default:
return CMD_RET_USAGE;
}
if (ret) {
printf("Operation failed (err=%d)\n", ret);
return CMD_RET_FAILURE;
}
}
if (*cmd == 'e')
return mtrr_set_valid(cpu_select, reg, true);
else if (*cmd == 'd')
return mtrr_set_valid(cpu_select, reg, false);
else if (*cmd == 's')
return do_mtrr_set(cpu_select, reg, argc - 1, argv + 1);
else
return CMD_RET_USAGE;
return 0;
}