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author | Patrick Rudolph <siro@das-labor.org> | 2017-11-20 11:57:01 +0100 |
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committer | Felix Held <felix-coreboot@felixheld.de> | 2018-07-28 16:00:42 +0000 |
commit | 74203de85185842f90ff1708b4f16445cc279688 (patch) | |
tree | 4ced98a0ea62d32dd8fb22686085b219f07e0bf4 /src/cpu/intel/model_206ax/common.c | |
parent | 2a7be5bf3061fe8ccd5505f08489ea4671b61f20 (diff) | |
download | coreboot-74203de85185842f90ff1708b4f16445cc279688.tar.xz |
intel/sandybridge: Don't hardcode platform type
* Add a function to return CPU platform ID bits
* Add a function to return platform type
** Platform id is 4 on Lenovo T430 (mobile)
** Platform id is 1 on HP8200 (desktop)
* Use introduced method to handle platform specific code
* Use enum for platform type
* Report platform ID
Change-Id: Ifbfc64c8cec98782d6efc987a4d4d5aeab1402ba
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/22530
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Diffstat (limited to 'src/cpu/intel/model_206ax/common.c')
-rw-r--r-- | src/cpu/intel/model_206ax/common.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/cpu/intel/model_206ax/common.c b/src/cpu/intel/model_206ax/common.c new file mode 100644 index 0000000000..9775efb30d --- /dev/null +++ b/src/cpu/intel/model_206ax/common.c @@ -0,0 +1,31 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2009 coresystems GmbH + * Copyright (C) 2011 The Chromium OS Authors. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; version 2 of + * the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <types.h> +#include <cpu/x86/msr.h> +#include "model_206ax.h" + +#define IA32_PLATFORM_ID 0x17 + +int get_platform_id(void) +{ + msr_t msr; + + msr = rdmsr(IA32_PLATFORM_ID); + /* Read Platform Id Bits 52:50 */ + return (msr.hi >> 18) & 0x7; +} |