From patchwork Fri May 22 02:23:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Glass X-Patchwork-Id: 246210 List-Id: U-Boot discussion From: sjg at chromium.org (Simon Glass) Date: Thu, 21 May 2020 20:23:26 -0600 Subject: [PATCH 22/22] x86: mtrr: Enhance 'mtrr' command to list MTRRs on any CPU In-Reply-To: <20200522022326.238388-1-sjg@chromium.org> References: <20200522022326.238388-1-sjg@chromium.org> Message-ID: <20200521202309.22.Idec50b4d6e5e6ba64e7ef591d56c756cadacc4fd@changeid> 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 --- 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 8365a7978ff..66ef48ff9f3 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':