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x86: mtrr: Enhance 'mtrr' command to list MTRRs on any CPU

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Update this command so it can list the MTRRs on a selected CPU. If
'-c all' is used, then all CPUs are listed.

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>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2020-07-17 08:48:31 -06:00 committed by Bin Meng
parent c6efee5031
commit 2a3d9a7af9
1 changed files with 21 additions and 1 deletions
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22
cmd/x86/mtrr.c
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@ -131,7 +131,27 @@ static int do_mtrr(struct cmd_tbl *cmdtp, int flag, int argc,
}
}
if (cmd == 'l') {
return do_mtrr_list(cpu_select);
bool first;
int i;
i = mp_first_cpu(cpu_select);
if (i < 0) {
printf("Invalid CPU (err=%d)\n", i);
return CMD_RET_FAILURE;
}
first = true;
for (; i >= 0; i = mp_next_cpu(cpu_select, i)) {
if (!first)
printf("\n");
printf("CPU %d:\n", i);
ret = do_mtrr_list(i);
if (ret) {
printf("Failed to read CPU %d (err=%d)\n", i,
ret);
return CMD_RET_FAILURE;
}
first = false;
}
} else {
switch (cmd) {
case 'e':