On Mon, Jun 15, 2020 at 1:00 AM Simon Glass sjg@chromium.org wrote:
Add a -c option to mtrr to allow any CPU to be updated with this command.
Signed-off-by: Simon Glass sjg@chromium.org Reviewed-by: Wolfgang Wallner wolfgang.wallner@br-automation.com
(no changes since v1)
cmd/x86/mtrr.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-)
diff --git a/cmd/x86/mtrr.c b/cmd/x86/mtrr.c index b51b1cd7e2..d88a875d92 100644 --- a/cmd/x86/mtrr.c +++ b/cmd/x86/mtrr.c @@ -104,6 +104,17 @@ static int do_mtrr(struct cmd_tbl *cmdtp, int flag, int argc, int ret;
cpu_select = MP_SELECT_BSP;
if (argc >= 3 && !strcmp("-c", argv[1])) {const char *cpustr;cpustr = argv[2];if (*cpustr == 'a')cpu_select = MP_SELECT_ALL;elsecpu_select = simple_strtol(cpustr, NULL, 16);argc -= 2;argv += 2;} argc--; argv++; cmd = argv[0] ? *argv[0] : 0;@@ -145,11 +156,14 @@ static int do_mtrr(struct cmd_tbl *cmdtp, int flag, int argc, }
U_BOOT_CMD(
mtrr, 6, 1, do_mtrr,
mtrr, 8, 1, do_mtrr, "Use x86 memory type range registers (32-bit only)", "[list] - list current registers\n" "set <reg> <type> <start> <size> - set a register\n" "\t<type> is Uncacheable, Combine, Through, Protect, Back\n" "disable <reg> - disable a register\n"
"enable <reg> - enable a register"
"enable <reg> - enable a register\n""\n""Precede command with '-c <n>|all' to access a particular CPU, e.g.\n"" mtrr -c all list; mtrr -c 2e list"
nits: better to mention cpu number is interpreted as a hex number
);
Reviewed-by: Bin Meng bmeng.cn@gmail.com