After commit 72662e01088394577be4a3f14da94cf87bea2591
ARM: head.S: only include __turn_mmu_on in the initial identity mapping
Zaurus PXA devices call sharpsl_save_param() during fixup and hang on
boot because memcpy refers to physical addresses no longer valid if the
MMU is setup.
Zaurus collie (SA1100) is unaffected (function is called in init_machine).
Signed-off-by: Marko Katic <drom...@gmail.com>
Signed-off-by: Andrea Adami <andrea.ad...@gmail.com>
---
arch/arm/common/sharpsl_param.c | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)
diff --git a/arch/arm/common/sharpsl_param.c b/arch/arm/common/sharpsl_param.c
index d56c932..4dcd349 100644
--- a/arch/arm/common/sharpsl_param.c
+++ b/arch/arm/common/sharpsl_param.c
@@ -15,6 +15,7 @@
#include <linux/module.h>
#include <linux/string.h>
#include <asm/mach/sharpsl_param.h>
+#include <asm/memory.h>
/*
* Certain hardware parameters determined at the time of device manufacture,
@@ -23,6 +24,8 @@
* them early in the boot process, then pass them to the appropriate drivers.
* Not all devices use all parameters but the format is common to all.
*/
+
+
#ifdef CONFIG_ARCH_SA1100
#define PARAM_BASE 0xe8ffc000
#else
@@ -41,7 +44,17 @@ EXPORT_SYMBOL(sharpsl_param);
void sharpsl_save_param(void)
{
- memcpy(&sharpsl_param, (void *)PARAM_BASE, sizeof(struct
sharpsl_param_info));
+/* NOTE:
+ * Zaurus PXA devices call sharpsl_save_param() during fixup and the MMU
+ * is setup so we need to translate the physical address.
+ * Zaurus collie (SA1100) is unaffected (function is called in init_machine).
+ */
+#ifdef CONFIG_ARCH_SA1100
+ void *param_start = (void *)PARAM_BASE;
+#else
+ void *param_start = phys_to_virt(PARAM_BASE);
+#endif
+ memcpy(&sharpsl_param, param_start, sizeof(struct sharpsl_param_info));
if (sharpsl_param.comadj_keyword != COMADJ_MAGIC)
sharpsl_param.comadj=-1;
@@ -58,5 +71,3 @@ void sharpsl_save_param(void)
if (sharpsl_param.adadj_keyword != AD_MAGIC)
sharpsl_param.adadj=-1;
}
-
-
--
1.8.1.5
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