From 6002bf03b4965053d7112c4ea2125d0b6548b0e9 Mon Sep 17 00:00:00 2001
From: Graeme Russ <graeme.russ@gmail.com>
Date: Sat, 12 Feb 2011 15:12:12 +1100
Subject: [PATCH] sc520: Release CAR and enable caching
---
arch/i386/cpu/sc520/sc520.c | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)
diff --git a/arch/i386/cpu/sc520/sc520.c b/arch/i386/cpu/sc520/sc520.c
index e5dcac675b..d0c313b91a 100644
--- a/arch/i386/cpu/sc520/sc520.c
+++ b/arch/i386/cpu/sc520/sc520.c
@@ -51,14 +51,20 @@ int cpu_init_f(void)
"popl %%ecx\n"
"loop 0b\n": : : "ecx");
- if (gd->flags & GD_FLG_COLD_BOOT) {
- /* turn on the SDRAM write buffer */
- writeb(0x11, &sc520_mmcr->dbctl);
- }
-
return x86_cpu_init_f();
}
+int cpu_init_r(void)
+{
+ /* Disable the PAR used for CAR */
+ writel(0x0000000, &sc520_mmcr->par[2]);
+
+ /* turn on the SDRAM write buffer */
+ writeb(0x11, &sc520_mmcr->dbctl);
+
+ return x86_cpu_init_r();
+}
+
#ifdef CONFIG_SYS_SC520_RESET
void reset_cpu(ulong addr)
{
--
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