[PATCH] DMI: Decode and save OEM String information

From: Shem Multinymous
Date: Thu Jul 27 2006 - 09:44:58 EST


This teachs dmi_decode() how to to save OEM Strings (type 11) information.
OEM Strings are the only safe way to identify some hardware, e.g., the ThinkPad
embedded controller used by the soon-to-be-submitted tp_smapi driver.

Follows the "System Management BIOS (SMBIOS) Specification"
(http://www.dmtf.org/standards/smbios), and also the userspace
dmidecode.c code.

---
drivers/firmware/dmi_scan.c | 21 +++++++++++++++++++++
include/linux/dmi.h | 3 ++-
2 files changed, 23 insertions(+), 1 deletions(-)

diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index b9e3886..d1add3f 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -123,6 +123,24 @@ static void __init dmi_save_devices(stru
dev->type = *d++ & 0x7f;
dev->name = dmi_string(dm, *d);
dev->device_data = NULL;
+ list_add(&dev->list, &dmi_devices);
+ }
+}
+
+static void __init dmi_save_oem_strings_devices(struct dmi_header *dm)
+{
+ int i, count = *(u8 *)(dm + 1);
+ struct dmi_device *dev;
+
+ for (i = 1; i <= count; i++) {
+ dev = dmi_alloc(sizeof(*dev));
+ if (!dev) {
+ break;
+ }
+
+ dev->type = DMI_DEV_TYPE_OEM_STRING;
+ dev->name = dmi_string(dm, i);
+ dev->device_data = NULL;

list_add(&dev->list, &dmi_devices);
}
@@ -181,6 +199,9 @@ static void __init dmi_decode(struct dmi
case 10: /* Onboard Devices Information */
dmi_save_devices(dm);
break;
+ case 11: /* OEM Strings */
+ dmi_save_oem_strings_devices(dm);
+ break;
case 38: /* IPMI Device Information */
dmi_save_ipmi_device(dm);
}
diff --git a/include/linux/dmi.h b/include/linux/dmi.h
index b2cd207..38dc403 100644
--- a/include/linux/dmi.h
+++ b/include/linux/dmi.h
@@ -27,7 +27,8 @@ enum dmi_device_type {
DMI_DEV_TYPE_ETHERNET,
DMI_DEV_TYPE_TOKENRING,
DMI_DEV_TYPE_SOUND,
- DMI_DEV_TYPE_IPMI = -1
+ DMI_DEV_TYPE_IPMI = -1,
+ DMI_DEV_TYPE_OEM_STRING = -2
};

struct dmi_header {
-
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