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-rw-r--r--arch/arm/kernel/head.S23
1 files changed, 19 insertions, 4 deletions
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 767390449e0a..dd6b369ac69c 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>
+#ifdef CONFIG_DEBUG_LL
+#include <mach/debug-macro.S>
+#endif
+
#if (PHYS_OFFSET & 0x001fffff)
#error "PHYS_OFFSET must be at an even 2MiB boundary!"
#endif
@@ -204,24 +208,35 @@ __create_page_tables:
str r6, [r0]
#ifdef CONFIG_DEBUG_LL
- ldr r7, [r10, #PROCINFO_IO_MMUFLAGS] @ io_mmuflags
+#ifndef CONFIG_DEBUG_ICEDCC
/*
* Map in IO space for serial debugging.
* This allows debug messages to be output
* via a serial console before paging_init.
*/
- ldr r3, [r8, #MACHINFO_PGOFFIO]
+ addruart r7, r3
+
+ mov r3, r3, lsr #20
+ mov r3, r3, lsl #2
+
add r0, r4, r3
rsb r3, r3, #0x4000 @ PTRS_PER_PGD*sizeof(long)
cmp r3, #0x0800 @ limit to 512MB
movhi r3, #0x0800
add r6, r0, r3
- ldr r3, [r8, #MACHINFO_PHYSIO]
- orr r3, r3, r7
+ mov r3, r7, lsr #20
+ ldr r7, [r10, #PROCINFO_IO_MMUFLAGS] @ io_mmuflags
+ orr r3, r7, r3, lsl #20
1: str r3, [r0], #4
add r3, r3, #1 << 20
teq r0, r6
bne 1b
+
+#else /* CONFIG_DEBUG_ICEDCC */
+ /* we don't need any serial debugging mappings for ICEDCC */
+ ldr r7, [r10, #PROCINFO_IO_MMUFLAGS] @ io_mmuflags
+#endif /* !CONFIG_DEBUG_ICEDCC */
+
#if defined(CONFIG_ARCH_NETWINDER) || defined(CONFIG_ARCH_CATS)
/*
* If we're using the NetWinder or CATS, we also need to map