---

yaml --- r: 286810 b: refs/heads/master c: 5b68edc h: refs/heads/master v: v3
git-mirror · Jan 26, 2012 · 8817a88 · 8817a88
1 parent 9f0e969
commit 8817a88
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Showing 2 changed files with 23 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 652847aa449cfe364d40018849223f57f31a38e2
+refs/heads/master: 5b68edc91cdc972c46f76f85eded7ffddc3ff5c2
diff --git a/trunk/arch/x86/kernel/microcode_amd.c b/trunk/arch/x86/kernel/microcode_amd.c
@@ -311,13 +311,33 @@ generic_load_microcode(int cpu, const u8 *data, size_t size)
 	return state;
 }
 
+/*
+ * AMD microcode firmware naming convention, up to family 15h they are in
+ * the legacy file:
+ *
+ *    amd-ucode/microcode_amd.bin
+ *
+ * This legacy file is always smaller than 2K in size.
+ *
+ * Starting at family 15h they are in family specific firmware files:
+ *
+ *    amd-ucode/microcode_amd_fam15h.bin
+ *    amd-ucode/microcode_amd_fam16h.bin
+ *    ...
+ *
+ * These might be larger than 2K.
+ */
 static enum ucode_state request_microcode_amd(int cpu, struct device *device)
 {
-	const char *fw_name = "amd-ucode/microcode_amd.bin";
+	char fw_name[36] = "amd-ucode/microcode_amd.bin";
 	const struct firmware *fw;
 	enum ucode_state ret = UCODE_NFOUND;
+	struct cpuinfo_x86 *c = &cpu_data(cpu);
+
+	if (c->x86 >= 0x15)
+		snprintf(fw_name, sizeof(fw_name), "amd-ucode/microcode_amd_fam%.2xh.bin", c->x86);
 
-	if (request_firmware(&fw, fw_name, device)) {
+	if (request_firmware(&fw, (const char *)fw_name, device)) {
 		pr_err("failed to load file %s\n", fw_name);
 		goto out;
 	}