From f68f62622239833ef214930c33d45409a616babe Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Sat, 2 Aug 2025 00:57:05 -0400
Subject: kernel: dmi: Add dmi_cpu_version()

Add DMI helper to grab processor version string

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 sys/dev/dmi/dmi.c         | 19 +++++++++++++++++++
 sys/include/dev/dmi/dmi.h |  1 +
 2 files changed, 20 insertions(+)

(limited to 'sys')

diff --git a/sys/dev/dmi/dmi.c b/sys/dev/dmi/dmi.c
index 84288cf..dc4b363 100644
--- a/sys/dev/dmi/dmi.c
+++ b/sys/dev/dmi/dmi.c
@@ -48,6 +48,7 @@
 #define SYSINFO_PRODUCT     0x02
 #define SYSINFO_FAMILY      0x03
 #define PROCINFO_MANUFACT   0x02
+#define PROCINFO_VERSION    0x03
 #define PROCINFO_PARTNO     0x06
 
 static struct limine_smbios_request smbios_req = {
@@ -198,6 +199,24 @@ dmi_cpu_manufact(void)
     return dmi_str_index(hdr, PROCINFO_MANUFACT);
 }
 
+/*
+ * Return the CPU version string from the
+ * DMI/SMBIOS Processor Info structure
+ *
+ * Returns NULL if not found
+ */
+const char *
+dmi_cpu_version(void)
+{
+    struct dmi_shdr *hdr;
+
+    if ((hdr = dmi_shdr(DMI_PROCESSOR_INFO)) == NULL) {
+        return NULL;
+    }
+
+    return dmi_str_index(hdr, PROCINFO_VERSION);
+}
+
 static int
 dmi_init(void)
 {
diff --git a/sys/include/dev/dmi/dmi.h b/sys/include/dev/dmi/dmi.h
index d24397a..a8f60d4 100644
--- a/sys/include/dev/dmi/dmi.h
+++ b/sys/include/dev/dmi/dmi.h
@@ -36,5 +36,6 @@ const char *dmi_vendor(void);
 const char *dmi_prodver(void);
 const char *dmi_product(void);
 const char *dmi_cpu_manufact(void);
+const char *dmi_cpu_version(void);
 
 #endif  /* !_DMI_DMI_H_ */
-- 
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