From f70fd13e2fe4cf58e251271c27f9c06e141d7f9a Mon Sep 17 00:00:00 2001
From: Heiko Schocher <hs@denx.de>
Date: Tue, 24 Feb 2009 11:30:51 +0100
Subject: 8360, kmeter1: added bootcount feature.

add CONFIG_BOOTCOUNT_LIMIT feature for 8360 CPU.

The bootcounter uses 8 bytes from the muram,
because no other memory was found on this
CPU for the bootcount feature. So we must
correct the muram size in DTS before booting
Linux.

This feature is actual only implemented for
MPC8360, because not all 83xx CPU have qe,
and therefore no muram, which this feature
uses.

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
---
 cpu/mpc83xx/cpu.c | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

(limited to 'cpu/mpc83xx/cpu.c')

diff --git a/cpu/mpc83xx/cpu.c b/cpu/mpc83xx/cpu.c
index 9e0a05d..876f5c7 100644
--- a/cpu/mpc83xx/cpu.c
+++ b/cpu/mpc83xx/cpu.c
@@ -35,6 +35,10 @@
 #include <tsec.h>
 #include <netdev.h>
 #include <fsl_esdhc.h>
+#ifdef CONFIG_BOOTCOUNT_LIMIT
+#include <asm/immap_qe.h>
+#include <asm/io.h>
+#endif
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -399,3 +403,33 @@ int cpu_mmc_init(bd_t *bis)
 	return 0;
 #endif
 }
+
+#ifdef CONFIG_BOOTCOUNT_LIMIT
+
+#if !defined(CONFIG_MPC8360)
+#error "CONFIG_BOOTCOUNT_LIMIT only for MPC8360 implemented"
+#endif
+
+#if !defined(CONFIG_BOOTCOUNT_ADDR)
+#define CONFIG_BOOTCOUNT_ADDR	(0x110000 + QE_MURAM_SIZE - 2 * sizeof(unsigned long))
+#endif
+
+#include <asm/io.h>
+
+void bootcount_store (ulong a)
+{
+	void *reg = (void *)(CONFIG_SYS_IMMR + CONFIG_BOOTCOUNT_ADDR);
+	out_be32 (reg, a);
+	out_be32 (reg + 4, BOOTCOUNT_MAGIC);
+}
+
+ulong bootcount_load (void)
+{
+	void *reg = (void *)(CONFIG_SYS_IMMR + CONFIG_BOOTCOUNT_ADDR);
+
+	if (in_be32 (reg + 4) != BOOTCOUNT_MAGIC)
+		return 0;
+	else
+		return in_be32 (reg);
+}
+#endif /* CONFIG_BOOTCOUNT_LIMIT */
-- 
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