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From: Graeme Russ <graeme.russ@gmail.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [RFC 06/14] x86: cache tidy-ups
Date: Fri, 23 Dec 2011 23:25:43 +1100	[thread overview]
Message-ID: <1324643151-23642-7-git-send-email-graeme.russ@gmail.com> (raw)
In-Reply-To: <1324643151-23642-1-git-send-email-graeme.russ@gmail.com>

---
 arch/x86/cpu/cpu.c |   20 ++++++++++++--------
 1 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/arch/x86/cpu/cpu.c b/arch/x86/cpu/cpu.c
index a8069ad..7ec0c12 100644
--- a/arch/x86/cpu/cpu.c
+++ b/arch/x86/cpu/cpu.c
@@ -115,14 +115,6 @@ int cpu_init_r(void) __attribute__((weak, alias("x86_cpu_init_r")));
 
 int x86_init_cache(void)
 {
-	const u32 nw_cd_rst = ~(X86_CR0_NW | X86_CR0_CD);
-
-	/* turn on the cache and disable write through */
-	asm("movl	%%cr0, %%eax\n"
-	    "andl	%0, %%eax\n"
-	    "movl	%%eax, %%cr0\n"
-	    "wbinvd\n" : : "i" (nw_cd_rst) : "eax");
-
 	return 0;
 }
 int init_cache(void) __attribute__((weak, alias("x86_init_cache")));
@@ -140,6 +132,18 @@ int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	return 0;
 }
 
+void enable_caches(void)
+{
+	const u32 nw_cd_rst = ~(X86_CR0_NW | X86_CR0_CD);
+
+	/* turn on the cache and disable write through */
+	asm("movl	%%cr0, %%eax\n"
+	    "andl	%0, %%eax\n"
+	    "movl	%%eax, %%cr0\n" : : "i" (nw_cd_rst) : "eax");
+
+	flush_cache(0, 0);
+}
+
 void  flush_cache(unsigned long dummy1, unsigned long dummy2)
 {
 	asm("wbinvd\n");
-- 
1.7.5.2.317.g391b14

  parent reply	other threads:[~2011-12-23 12:25 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-12-23 12:25 [U-Boot] [RFC 00/14] x86 touch-ups (Includes new init sequence!) Graeme Russ
2011-12-23 12:25 ` [U-Boot] [RFC 01/14] x86: Import glibc memcpy implementation Graeme Russ
2011-12-23 12:25 ` [U-Boot] [RFC 02/14] x86: Speed up copy-to-RAM and clear BSS operations Graeme Russ
2011-12-23 12:25 ` [U-Boot] [RFC 03/14] x86: Allow cache before copy to RAM Graeme Russ
2011-12-23 12:25 ` [U-Boot] [RFC 04/14] x86: Import MSR/MTRR code from Linux Graeme Russ
2011-12-23 12:25 ` [U-Boot] [RFC 05/14] x86: Create weak init_cache() function Graeme Russ
2011-12-29  5:39   ` Simon Glass
2011-12-23 12:25 ` Graeme Russ [this message]
2011-12-23 12:25 ` [U-Boot] [RFC 07/14] CHECKPATCH: arch/x86/cpu/* Graeme Russ
2011-12-23 12:25 ` [U-Boot] [RFC 08/14] CHECKPATCH: arch/x86/lib/* Graeme Russ
2011-12-23 12:25 ` [U-Boot] [RFC 09/14] x86: Move do_go_exec() out of board.c Graeme Russ
2011-12-23 12:25 ` [U-Boot] [RFC 10/14] x86: Move setup_pcat_compatibility() " Graeme Russ
2011-12-23 12:25 ` [U-Boot] [RFC 11/14] x86: remove gd->start_addr_sp Graeme Russ
2011-12-23 12:25 ` [U-Boot] [RFC 12/14] x86: Move relocation code out of board.c Graeme Russ
2011-12-23 12:25 ` [U-Boot] [RFC 13/14] x86: Simplify board.c Graeme Russ
2011-12-23 12:25 ` [U-Boot] [RFC 14/14] x86: Tweak initialisation procedure Graeme Russ
2011-12-26  5:18 ` [U-Boot] [RFC 00/14] x86 touch-ups (Includes new init sequence!) Graeme Russ
2011-12-26  6:59   ` Simon Glass

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