[S] Change in coreboot[master]: drivers/ocp/dmi: set SMBIOS type 0 firmware revision

[Jonathan Zhang (Code Review)]

Jonathan Zhang has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/68785 )

Change subject: drivers/ocp/dmi: set SMBIOS type 0 firmware revision
......................................................................

drivers/ocp/dmi: set SMBIOS type 0 firmware revision

Set smbios type 0 firmware revision. Refer to IPMI v2.0 SPEC,
minor revision is defined as BCD encoded so update the format
accordingly.

TESTED=Execute "dmidecode -t 0" to check corresponding field.

Signed-off-by: Tim Chu 
Signed-off-by: Jonzhang Zhang

Change-Id: I898662b78d3dbab1861cee6f1b6e148297a5d11b
---
M src/drivers/ocp/dmi/smbios.c
1 file changed, 33 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/85/68785/1

diff --git a/src/drivers/ocp/dmi/smbios.c b/src/drivers/ocp/dmi/smbios.c
index 51c008d..0ac3334 100644
--- a/src/drivers/ocp/dmi/smbios.c
+++ b/src/drivers/ocp/dmi/smbios.c
@@ -22,6 +22,21 @@
 msr_t xeon_sp_ppin[2] = {0};
 static bool remote_ppin_done = false;

+/*
+ * Update SMBIOS type 0 ec version.
+ * For OCP platforms, BMC version is used to represent ec version.
+ * Refer to IPMI v2.0 spec, minor revision is defined as BCD encoded,
+ * format it accordingly.
+ */
+void smbios_ec_revision(uint8_t *ec_major_revision, uint8_t *ec_minor_revision)
+{
+	uint8_t bmc_major_revision, bmc_minor_revision;
+
+	ipmi_bmc_version(&bmc_major_revision, &bmc_minor_revision);
+	*ec_major_revision = bmc_major_revision & 0x7f; /* bit[6:0] Major Firmware Revision */
+	*ec_minor_revision = ((bmc_minor_revision / 16) * 10) + (bmc_minor_revision % 16);
+}
+
 /* Override SMBIOS type 1 data. */
 const char *smbios_system_manufacturer(void)
 {