Commit 8881cdce authored by Bjorn Helgaas's avatar Bjorn Helgaas Committed by Linus Torvalds
Browse files

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: default avatarBjorn 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent d31eb519

drivers/firmware/dmi_scan.c

+31 −1
Original line number Diff line number Diff line
@@ -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];
@@ -381,9 +409,11 @@ 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;

}

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