From: tip-bot for Borislav Petkov <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: hpa@zytor.com, tglx@linutronix.de, mingo@kernel.org,
peterz@infradead.org, bp@suse.de, linux-kernel@vger.kernel.org,
tv@lio96.de, torvalds@linux-foundation.org
Subject: [tip:x86/microcode] x86/microcode: Document builtin microcode loading method
Date: Tue, 9 Feb 2016 04:26:11 -0800 [thread overview]
Message-ID: <tip-b584303261b7041f209afde4bf7ddb7a21598a1f@git.kernel.org> (raw)
In-Reply-To: <1454499225-21544-18-git-send-email-bp@alien8.de>
Commit-ID: b584303261b7041f209afde4bf7ddb7a21598a1f
Gitweb: http://git.kernel.org/tip/b584303261b7041f209afde4bf7ddb7a21598a1f
Author: Borislav Petkov <bp@suse.de>
AuthorDate: Wed, 3 Feb 2016 12:33:45 +0100
Committer: Ingo Molnar <mingo@kernel.org>
CommitDate: Tue, 9 Feb 2016 11:41:19 +0100
x86/microcode: Document builtin microcode loading method
Add some text and an example to Documentation/x86/early-microcode.txt
explaining how to build in microcode.
Tested-by: Thomas Voegtle <tv@lio96.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1454499225-21544-18-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
Documentation/x86/early-microcode.txt | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/Documentation/x86/early-microcode.txt b/Documentation/x86/early-microcode.txt
index d62bea6..c956d99 100644
--- a/Documentation/x86/early-microcode.txt
+++ b/Documentation/x86/early-microcode.txt
@@ -40,3 +40,28 @@ cp ../microcode.bin kernel/x86/microcode/GenuineIntel.bin (or AuthenticAMD.bin)
find . | cpio -o -H newc >../ucode.cpio
cd ..
cat ucode.cpio /boot/initrd-3.5.0.img >/boot/initrd-3.5.0.ucode.img
+
+Builtin microcode
+=================
+
+We can also load builtin microcode supplied through the regular firmware
+builtin method CONFIG_FIRMWARE_IN_KERNEL. Here's an example:
+
+CONFIG_FIRMWARE_IN_KERNEL=y
+CONFIG_EXTRA_FIRMWARE="intel-ucode/06-3a-09 amd-ucode/microcode_amd_fam15h.bin"
+CONFIG_EXTRA_FIRMWARE_DIR="/lib/firmware"
+
+This basically means, you have the following tree structure locally:
+
+/lib/firmware/
+|-- amd-ucode
+...
+| |-- microcode_amd_fam15h.bin
+...
+|-- intel-ucode
+...
+| |-- 06-3a-09
+...
+
+so that the build system can find those files and integrate them into
+the final kernel image. The early loader finds them and applies them.
prev parent reply other threads:[~2016-02-09 12:26 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-03 11:33 [PATCH 00/17] x86/microcode: Untangle loader from BLK_DEV_INITRD Borislav Petkov
2016-02-03 11:33 ` [PATCH 01/17] x86/microcode: Untangle " Borislav Petkov
2016-02-09 12:20 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-02-03 11:33 ` [PATCH 02/17] x86/microcode/intel: Make early loader look for builtin microcode too Borislav Petkov
2016-02-09 12:20 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-02-03 11:33 ` [PATCH 03/17] x86/microcode: Remove redundant __setup() param parsing Borislav Petkov
2016-02-09 12:21 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-02-03 11:33 ` [PATCH 04/17] x86/microcode: Remove an unneeded NULL check Borislav Petkov
[not found] ` <20140120103046.GC14233@elgon.mountain>
2016-02-09 12:21 ` [tip:x86/microcode] " tip-bot for Dan Carpenter
2016-02-03 11:33 ` [PATCH 05/17] x86/microcode: Issue update message only once Borislav Petkov
2016-02-09 12:21 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-02-03 11:33 ` [PATCH 06/17] x86/microcode/AMD: Drop redundant printk prefix Borislav Petkov
2016-02-09 12:22 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-02-03 11:33 ` [PATCH 07/17] x86/microcode/intel: Rename local variables of type struct mc_saved_data Borislav Petkov
2016-02-09 12:22 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-02-03 11:33 ` [PATCH 08/17] x86/microcode/intel: Rename mc_saved_count to num_saved Borislav Petkov
2016-02-09 12:22 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-02-03 11:33 ` [PATCH 09/17] x86/microcode/intel: Rename mc_intel variable to mc Borislav Petkov
2016-02-09 12:23 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-02-03 11:33 ` [PATCH 10/17] x86/microcode/intel: Move the BUG_ON up and turn it into WARN_ON Borislav Petkov
2016-02-09 12:23 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-02-03 11:33 ` [PATCH 11/17] x86/microcode/intel: Cleanup apply_microcode_intel() Borislav Petkov
2016-02-09 12:24 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-02-03 11:33 ` [PATCH 12/17] x86/microcode/intel: Use *wrmsrl variants Borislav Petkov
2016-02-09 12:24 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-02-03 11:33 ` [PATCH 13/17] x86/microcode/intel: Rename mc_saved_in_initrd Borislav Petkov
2016-02-09 12:24 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-02-03 11:33 ` [PATCH 14/17] x86/microcode/intel: Remove unused arg of get_matching_model_microcode() Borislav Petkov
2016-02-09 12:25 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-02-03 11:33 ` [PATCH 15/17] x86/microcode/intel: Cleanup get_matching_model_microcode() Borislav Petkov
2016-02-09 12:25 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-02-03 11:33 ` [PATCH 16/17] x86/microcode/AMD: Issue microcode updated message later Borislav Petkov
2016-02-09 12:25 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-02-03 11:33 ` [PATCH 17/17] x86/microcode: Document builtin microcode loading method Borislav Petkov
2016-02-09 12:26 ` tip-bot for Borislav Petkov [this message]
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