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-rw-r--r--arch/arm/kernel/head.S7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index d994561..cf495a30 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -22,6 +22,10 @@
#include <asm/thread_info.h>
#include <asm/system.h>
+#if (PHYS_OFFSET & 0x001fffff)
+#error "PHYS_OFFSET must be at an even 2MiB boundary!"
+#endif
+
#define KERNEL_RAM_VADDR (PAGE_OFFSET + TEXT_OFFSET)
#define KERNEL_RAM_PADDR (PHYS_OFFSET + TEXT_OFFSET)
@@ -251,7 +255,8 @@ __create_page_tables:
* Then map first 1MB of ram in case it contains our boot params.
*/
add r0, r4, #PAGE_OFFSET >> 18
- orr r6, r7, #PHYS_OFFSET
+ orr r6, r7, #(PHYS_OFFSET & 0xff000000)
+ orr r6, r6, #(PHYS_OFFSET & 0x00e00000)
str r6, [r0]
#ifdef CONFIG_XIP_KERNEL
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