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authorKyösti Mälkki <kyosti.malkki@gmail.com>2013-12-08 07:21:05 +0200
committerAlexandru Gagniuc <mr.nuke.me@gmail.com>2015-02-03 04:51:52 +0100
commit5fe1fb7a5fc0c3e9ffbc30187e2a5c15f86f2a08 (patch)
tree0d2ad4d07d217c6dbec352408091f5d8af6cab4b /src/cpu/amd/microcode
parent893b81f79f43bb25e9ba7f83339475fed729899a (diff)
downloadcoreboot-5fe1fb7a5fc0c3e9ffbc30187e2a5c15f86f2a08.tar.xz
cpu/amd (non-AGESA): Load microcode updates from CBFS
Change-Id: Ic67856414ea2fea9a9eb95d72136cb05da9483fa Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-on: http://review.coreboot.org/4502 Tested-by: build bot (Jenkins) Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Diffstat (limited to 'src/cpu/amd/microcode')
-rw-r--r--src/cpu/amd/microcode/microcode.c68
1 files changed, 46 insertions, 22 deletions
diff --git a/src/cpu/amd/microcode/microcode.c b/src/cpu/amd/microcode/microcode.c
index cdc6e4aad1..a5da75b74c 100644
--- a/src/cpu/amd/microcode/microcode.c
+++ b/src/cpu/amd/microcode/microcode.c
@@ -21,6 +21,10 @@
#include <console/console.h>
#include <cpu/x86/msr.h>
#include <cpu/amd/microcode.h>
+#include <cbfs.h>
+
+#define UCODE_DEBUG(fmt, args...) \
+ do { printk(BIOS_DEBUG, "[microcode] "fmt, ##args); } while(0)
struct microcode {
u32 date_code;
@@ -51,40 +55,60 @@ struct microcode {
u8 x86_code_entry[191];
};
-void amd_update_microcode(void *microcode_updates, u32 equivalent_processor_rev_id)
+static void apply_microcode_patch(const struct microcode *m)
{
- u32 patch_id, new_patch_id;
- struct microcode *m;
- char *c;
+ uint32_t new_patch_id;
msr_t msr;
- msr = rdmsr(0x8b);
- patch_id = msr.lo;
-
- printk(BIOS_DEBUG, "microcode: equivalent rev id = 0x%04x, current patch id = 0x%08x\n", equivalent_processor_rev_id, patch_id);
+ /* apply patch */
+ msr.hi = 0;
+ msr.lo = (uint32_t)m;
- m = microcode_updates;
+ wrmsr(0xc0010020, msr);
- for(c = microcode_updates; m->date_code; m = (struct microcode *)c) {
-
- if (m->processor_rev_id == equivalent_processor_rev_id) {
- //apply patch
+ UCODE_DEBUG("patch id to apply = 0x%08x\n", m->patch_id);
- msr.hi = 0;
- msr.lo = (u32)m;
-
- wrmsr(0xc0010020, msr);
+ /* read the patch_id again */
+ msr = rdmsr(0x8b);
+ new_patch_id = msr.lo;
- printk(BIOS_DEBUG, "microcode: patch id to apply = 0x%08x\n", m->patch_id);
+ UCODE_DEBUG("updated to patch id = 0x%08x %s\n", new_patch_id ,
+ (new_patch_id == m->patch_id) ? "success" : "fail");
+}
- //read the patch_id again
- msr = rdmsr(0x8b);
- new_patch_id = msr.lo;
+static void amd_update_microcode(const void *ucode, size_t ucode_len,
+ uint32_t equivalent_processor_rev_id)
+{
+ const struct microcode *m;
+ const void *c;
- printk(BIOS_DEBUG, "microcode: updated to patch id = 0x%08x %s\n", new_patch_id , (new_patch_id == m->patch_id)?" success\n":" fail\n" );
+ for(m = c = ucode; m->date_code; m = c) {
+ if (m->processor_rev_id == equivalent_processor_rev_id) {
+ apply_microcode_patch(m);
break;
}
c += 2048;
}
+}
+
+#define MICROCODE_CBFS_FILE "cpu_microcode_blob.bin"
+
+void amd_update_microcode_from_cbfs(u32 equivalent_processor_rev_id)
+{
+ const void *ucode;
+ size_t ucode_len;
+
+ if (equivalent_processor_rev_id == 0) {
+ UCODE_DEBUG("rev id not found. Skipping microcode patch!\n");
+ return;
+ }
+
+ ucode = cbfs_get_file_content(CBFS_DEFAULT_MEDIA, MICROCODE_CBFS_FILE,
+ CBFS_TYPE_MICROCODE, &ucode_len);
+ if (!ucode) {
+ UCODE_DEBUG("microcode file not found. Skipping updates.\n");
+ return;
+ }
+ amd_update_microcode(ucode, ucode_len, equivalent_processor_rev_id);
}