Servers that have a BMC encodes the release version of their firmwarein the
"Embedded Controller Firmware {Major|Minor} Release" fields of Type 0.
This information is used to know which BMC release actually runs.
It could be used for some quirks, debugging sessions or inventory tasks.
A typical output for a Dell system running the 3.75 bios is :
[root@t1700 ~]# cat /sys/devices/virtual/dmi/id/fw_release
3.75
[root@t1700 ~]#
Signed-off-by: Erwan Velu <e.velu@xxxxxxxxxx>
---
drivers/firmware/dmi-id.c | 3 +++
drivers/firmware/dmi_scan.c | 1 +
include/linux/mod_devicetable.h | 1 +
scripts/mod/file2alias.c | 1 +
4 files changed, 6 insertions(+)
diff --git a/drivers/firmware/dmi-id.c b/drivers/firmware/dmi-id.c
index a2aac65ff771..93eca3222fb0 100644
--- a/drivers/firmware/dmi-id.c
+++ b/drivers/firmware/dmi-id.c
@@ -43,6 +43,7 @@ DEFINE_DMI_ATTR_WITH_SHOW(bios_version, 0444, DMI_BIOS_VERSION);
DEFINE_DMI_ATTR_WITH_SHOW(bios_date, 0444, DMI_BIOS_DATE);
DEFINE_DMI_ATTR_WITH_SHOW(sys_vendor, 0444, DMI_SYS_VENDOR);
DEFINE_DMI_ATTR_WITH_SHOW(bios_release, 0444, DMI_BIOS_RELEASE);
+DEFINE_DMI_ATTR_WITH_SHOW(fw_release, 0444, DMI_EMBEDDED_FW_RELEASE);
DEFINE_DMI_ATTR_WITH_SHOW(product_name, 0444, DMI_PRODUCT_NAME);
DEFINE_DMI_ATTR_WITH_SHOW(product_version, 0444, DMI_PRODUCT_VERSION);
DEFINE_DMI_ATTR_WITH_SHOW(product_serial, 0400, DMI_PRODUCT_SERIAL);
@@ -80,6 +81,7 @@ static ssize_t get_modalias(char *buffer, size_t buffer_size)
{ "bvr", DMI_BIOS_VERSION },
{ "bd", DMI_BIOS_DATE },
{ "br", DMI_BIOS_RELEASE },
+ { "efr", DMI_EMBEDDED_FW_RELEASE },
{ "svn", DMI_SYS_VENDOR },
{ "pn", DMI_PRODUCT_NAME },
{ "pvr", DMI_PRODUCT_VERSION },
@@ -190,6 +192,7 @@ static void __init dmi_id_init_attr_table(void)
ADD_DMI_ATTR(bios_version, DMI_BIOS_VERSION);
ADD_DMI_ATTR(bios_date, DMI_BIOS_DATE);
ADD_DMI_ATTR(bios_release, DMI_BIOS_RELEASE);
+ ADD_DMI_ATTR(fw_release, DMI_EMBEDDED_FW_RELEASE);
ADD_DMI_ATTR(sys_vendor, DMI_SYS_VENDOR);
ADD_DMI_ATTR(product_name, DMI_PRODUCT_NAME);
ADD_DMI_ATTR(product_version, DMI_PRODUCT_VERSION);
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index d010c915c1ab..5394aa553140 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -467,6 +467,7 @@ static void __init dmi_decode(const struct dmi_header *dm, void *dummy)
dmi_save_ident(dm, DMI_BIOS_VERSION, 5);
dmi_save_ident(dm, DMI_BIOS_DATE, 8);
dmi_save_release(dm, DMI_BIOS_RELEASE, 21);
+ dmi_save_release(dm, DMI_EMBEDDED_FW_RELEASE, 23);
break;
case 1: /* System Information */
dmi_save_ident(dm, DMI_SYS_VENDOR, 4);
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index 618933d770e6..ad64a101676d 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -533,6 +533,7 @@ enum dmi_field {
DMI_BIOS_VERSION,
DMI_BIOS_DATE,
DMI_BIOS_RELEASE,
+ DMI_EMBEDDED_FW_RELEASE,
DMI_SYS_VENDOR,
DMI_PRODUCT_NAME,
DMI_PRODUCT_VERSION,
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index cc48930cc02a..c0e1d379d9df 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -937,6 +937,7 @@ static const struct dmifield {
{ "bvr", DMI_BIOS_VERSION },
{ "bd", DMI_BIOS_DATE },
{ "br", DMI_BIOS_RELEASE },
+ { "efr", DMI_EMBEDDED_FW_RELEASE },
{ "svn", DMI_SYS_VENDOR },
{ "pn", DMI_PRODUCT_NAME },
{ "pvr", DMI_PRODUCT_VERSION },
--
2.23.0
