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authorBjorn Helgaas <bjorn.helgaas@hp.com>2010-10-27 15:32:59 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-27 18:03:05 -0700
commit8881cdceb25b4fcebfb17a9548ed80c22cf8b066 (patch)
tree939be53dc8eb5fe280347811f1d202efad98ed75
parentd31eb5194bbdcc7db9fd6956c293e45093bfb394 (diff)
downloadlinux-8881cdceb25b4fcebfb17a9548ed80c22cf8b066.tar.bz2
dmi: log board, system, and BIOS 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. "BOARD/PRODUCT" format copied from show_regs_common(), which is used in the oops path. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--drivers/firmware/dmi_scan.c32
1 files changed, 31 insertions, 1 deletions
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index b3d22d659990..e28e41668177 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -2,6 +2,7 @@
#include <linux/string.h>
#include <linux/init.h>
#include <linux/module.h>
+#include <linux/ctype.h>
#include <linux/dmi.h>
#include <linux/efi.h>
#include <linux/bootmem.h>
@@ -361,6 +362,33 @@ static void __init dmi_decode(const struct dmi_header *dm, void *dummy)
}
}
+static void __init print_filtered(const char *info)
+{
+ const char *p;
+
+ if (!info)
+ return;
+
+ for (p = info; *p; p++)
+ if (isprint(*p))
+ printk(KERN_CONT "%c", *p);
+ else
+ printk(KERN_CONT "\\x%02x", *p & 0xff);
+}
+
+static void __init dmi_dump_ids(void)
+{
+ printk(KERN_DEBUG "DMI: ");
+ print_filtered(dmi_get_system_info(DMI_BOARD_NAME));
+ printk(KERN_CONT "/");
+ print_filtered(dmi_get_system_info(DMI_PRODUCT_NAME));
+ printk(KERN_CONT ", BIOS ");
+ print_filtered(dmi_get_system_info(DMI_BIOS_VERSION));
+ printk(KERN_CONT " ");
+ print_filtered(dmi_get_system_info(DMI_BIOS_DATE));
+ printk(KERN_CONT "\n");
+}
+
static int __init dmi_present(const char __iomem *p)
{
u8 buf[15];
@@ -381,8 +409,10 @@ 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) {
+ dmi_dump_ids();
return 0;
+ }
}
return 1;
}