diff options
| author | Vadim Bendebury <vbendeb@chromium.org> | 2012-06-19 12:56:57 -0700 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2012-07-24 22:15:19 +0200 |
| commit | 537b4e09e644107ed644cd88f8a7fd488406b9a2 (patch) | |
| tree | 92b1fc622e2f89c55149064396459ac362f2be17 /src/cpu/intel/microcode | |
| parent | ef6b08cc486e5d97103211dfeb3d629552a92e43 (diff) | |
Add code to read Intel microcode from CBFS
When CONFIG_MICROCODE_IN_CBFS is enabled, find the microcode blob in
CBFS and pass it to intel_update_microcode() instead of using the
compiled in array.
CBFS accesses in pre-RAM and 'normal' environments are provided
through different API.
Change-Id: I35c1480edf87e550a7b88c4aadf079cf3ff86b5d
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: http://review.coreboot.org/1296
Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/cpu/intel/microcode')
| -rw-r--r-- | src/cpu/intel/microcode/microcode.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/cpu/intel/microcode/microcode.c b/src/cpu/intel/microcode/microcode.c index ec42fb91d7..af83faf69d 100644 --- a/src/cpu/intel/microcode/microcode.c +++ b/src/cpu/intel/microcode/microcode.c @@ -1,6 +1,7 @@ /* * This file is part of the coreboot project. * + * Copyright (C) 2012 The ChromiumOS Authors. All rights reserved. * Copyright (C) 2000 Ronald G. Minnich * * This program is free software; you can redistribute it and/or modify @@ -27,6 +28,14 @@ #include <cpu/x86/msr.h> #include <cpu/intel/microcode.h> +#if CONFIG_MICROCODE_IN_CBFS +#ifdef __PRE_RAM__ +#include <arch/cbfs.h> +#else +#include <cbfs.h> +#endif +#endif + struct microcode { u32 hdrver; /* Header Version */ u32 rev; /* Update Revision */ @@ -68,6 +77,9 @@ static inline u32 read_microcode_rev(void) return msr.hi; } +#if CONFIG_MICROCODE_IN_CBFS +static +#endif void intel_update_microcode(const void *microcode_updates) { u32 eax; @@ -131,3 +143,21 @@ void intel_update_microcode(const void *microcode_updates) } } } + +#if CONFIG_MICROCODE_IN_CBFS + +#define MICROCODE_CBFS_FILE "microcode_blob.bin" + +void intel_update_microcode_from_cbfs(void) +{ + void *microcode_blob; + +#ifdef __PRE_RAM__ + microcode_blob = walkcbfs((char *) MICROCODE_CBFS_FILE); +#else + microcode_blob = cbfs_find_file(MICROCODE_CBFS_FILE, + CBFS_TYPE_MICROCODE); +#endif + intel_update_microcode(microcode_blob); +} +#endif |