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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 @@
22#include <asm/thread_info.h> 22#include <asm/thread_info.h>
23#include <asm/system.h> 23#include <asm/system.h>
24 24
25#ifdef CONFIG_DEBUG_LL
26#include <mach/debug-macro.S>
27#endif
28
25#if (PHYS_OFFSET & 0x001fffff) 29#if (PHYS_OFFSET & 0x001fffff)
26#error "PHYS_OFFSET must be at an even 2MiB boundary!" 30#error "PHYS_OFFSET must be at an even 2MiB boundary!"
27#endif 31#endif
@@ -204,24 +208,35 @@ __create_page_tables:
204 str r6, [r0] 208 str r6, [r0]
205 209
206#ifdef CONFIG_DEBUG_LL 210#ifdef CONFIG_DEBUG_LL
207 ldr r7, [r10, #PROCINFO_IO_MMUFLAGS] @ io_mmuflags 211#ifndef CONFIG_DEBUG_ICEDCC
208 /* 212 /*
209 * Map in IO space for serial debugging. 213 * Map in IO space for serial debugging.
210 * This allows debug messages to be output 214 * This allows debug messages to be output
211 * via a serial console before paging_init. 215 * via a serial console before paging_init.
212 */ 216 */
213 ldr r3, [r8, #MACHINFO_PGOFFIO] 217 addruart r7, r3
218
219 mov r3, r3, lsr #20
220 mov r3, r3, lsl #2
221
214 add r0, r4, r3 222 add r0, r4, r3
215 rsb r3, r3, #0x4000 @ PTRS_PER_PGD*sizeof(long) 223 rsb r3, r3, #0x4000 @ PTRS_PER_PGD*sizeof(long)
216 cmp r3, #0x0800 @ limit to 512MB 224 cmp r3, #0x0800 @ limit to 512MB
217 movhi r3, #0x0800 225 movhi r3, #0x0800
218 add r6, r0, r3 226 add r6, r0, r3
219 ldr r3, [r8, #MACHINFO_PHYSIO] 227 mov r3, r7, lsr #20
220 orr r3, r3, r7 228 ldr r7, [r10, #PROCINFO_IO_MMUFLAGS] @ io_mmuflags
229 orr r3, r7, r3, lsl #20
2211: str r3, [r0], #4 2301: str r3, [r0], #4
222 add r3, r3, #1 << 20 231 add r3, r3, #1 << 20
223 teq r0, r6 232 teq r0, r6
224 bne 1b 233 bne 1b
234
235#else /* CONFIG_DEBUG_ICEDCC */
236 /* we don't need any serial debugging mappings for ICEDCC */
237 ldr r7, [r10, #PROCINFO_IO_MMUFLAGS] @ io_mmuflags
238#endif /* !CONFIG_DEBUG_ICEDCC */
239
225#if defined(CONFIG_ARCH_NETWINDER) || defined(CONFIG_ARCH_CATS) 240#if defined(CONFIG_ARCH_NETWINDER) || defined(CONFIG_ARCH_CATS)
226 /* 241 /*
227 * If we're using the NetWinder or CATS, we also need to map 242 * If we're using the NetWinder or CATS, we also need to map