From: Simon Glass <sjg@chromium.org>
Date: Fri, 17 Jul 2020 14:48:31 +0000 (-0600)
Subject: x86: mtrr: Enhance 'mtrr' command to list MTRRs on any CPU
X-Git-Tag: v2025.01-rc5-pxa1908~2301^2
X-Git-Url: http://git.dujemihanovic.xyz/%22/img/sics.gif/%22/static/git-favicon.png?a=commitdiff_plain;h=2a3d9a7af9b3f7abad4d1bc4d40f1d665a54da8f;p=u-boot.git

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 <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>
---

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':