linux-kernel - [PATCH] DMI: log system, BIOS, and board information

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Date:	Wed, 29 Sep 2010 12:24:02 -0600
From:	Bjorn Helgaas <bjorn.helgaas@...com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] DMI: log system, BIOS, and board information


Put basic system information in the dmesg log.  There are lots of dmesg
logs on the web, and it would be useful if they contained this information
for debugging platform problems.

DMI often doesn't supply a board name, but I assume the others are pretty
standard.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@...com>
---

 drivers/firmware/dmi_scan.c |   15 ++++++++++++++-
 1 files changed, 14 insertions(+), 1 deletions(-)


diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index b3d22d6..ea6719f 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -364,6 +364,7 @@ static void __init dmi_decode(const struct dmi_header *dm, void *dummy)
 static int __init dmi_present(const char __iomem *p)
 {
 	u8 buf[15];
+	const char *board, *label = " board ";
 
 	memcpy_fromio(buf, p, 15);
 	if ((memcmp(buf, "_DMI_", 5) == 0) && dmi_checksum(buf)) {
@@ -381,8 +382,20 @@ static int __init dmi_present(const char __iomem *p)
 			       buf[14] >> 4, buf[14] & 0xF);
 		else
 			printk(KERN_INFO "DMI present.\n");
-		if (dmi_walk_early(dmi_decode) == 0)
+		if (dmi_walk_early(dmi_decode) == 0) {
+			board = dmi_get_system_info(DMI_BOARD_NAME);
+			if (!board) {
+				board = "";
+				label = "";
+			}
+			printk(KERN_DEBUG "DMI: %s %s BIOS %s %s%s%s\n",
+			       dmi_get_system_info(DMI_SYS_VENDOR),
+			       dmi_get_system_info(DMI_PRODUCT_NAME),
+			       dmi_get_system_info(DMI_BIOS_VERSION),
+			       dmi_get_system_info(DMI_BIOS_DATE),
+			       label, board);
 			return 0;
+		}
 	}
 	return 1;
 }

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