From 2a3d9a7af9b3f7abad4d1bc4d40f1d665a54da8f Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Fri, 17 Jul 2020 08:48:31 -0600 Subject: [PATCH] x86: mtrr: Enhance 'mtrr' command to list MTRRs on any CPU 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 Reviewed-by: Wolfgang Wallner Reviewed-by: Bin Meng Tested-by: Bin Meng --- cmd/x86/mtrr.c | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/cmd/x86/mtrr.c b/cmd/x86/mtrr.c index d8a7e56d5a..e118bba5a2 100644 --- a/cmd/x86/mtrr.c +++ b/cmd/x86/mtrr.c @@ -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': -- 2.39.5