linux-kernel - [tip:x86/microcode] x86/head_32.S: Early update ucode in 32-bit

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Message-ID: <tip-eadd948a43145b54b2da8ee4d83774ac2aa6ee02@git.kernel.org>
Date:	Fri, 30 Nov 2012 16:26:19 -0800
From:	tip-bot for Fenghua Yu <fenghua.yu@...el.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org,
	fenghua.yu@...el.com, tglx@...utronix.de, hpa@...ux.intel.com
Subject: [tip:x86/microcode] x86/head_32.S: Early update ucode in 32-bit

Commit-ID:  eadd948a43145b54b2da8ee4d83774ac2aa6ee02
Gitweb:     http://git.kernel.org/tip/eadd948a43145b54b2da8ee4d83774ac2aa6ee02
Author:     Fenghua Yu <fenghua.yu@...el.com>
AuthorDate: Thu, 29 Nov 2012 17:47:44 -0800
Committer:  H. Peter Anvin <hpa@...ux.intel.com>
CommitDate: Fri, 30 Nov 2012 15:18:16 -0800

x86/head_32.S: Early update ucode in 32-bit

This updates ucode in 32-bit kernel. At this point, there is no paging and no
virtual address yet.

Signed-off-by: Fenghua Yu <fenghua.yu@...el.com>
Link: http://lkml.kernel.org/r/1354240068-9821-7-git-send-email-fenghua.yu@intel.com
Signed-off-by: H. Peter Anvin <hpa@...ux.intel.com>
---
 arch/x86/kernel/head_32.S | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S
index 957a47a..b7b76a4 100644
--- a/arch/x86/kernel/head_32.S
+++ b/arch/x86/kernel/head_32.S
@@ -144,6 +144,12 @@ ENTRY(startup_32)
 	movl %eax, pa(olpc_ofw_pgd)
 #endif
 
+#ifdef CONFIG_MICROCODE_EARLY
+	/* Early load ucode on BSP. */
+	movl $pa(boot_params), %eax
+	call load_ucode_bsp
+#endif
+
 /*
  * Initialize page tables.  This creates a PDE and a set of page
  * tables, which are located immediately beyond __brk_base.  The variable
--
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