Merge nommu branch

3 files changed, 35 insertions, 7 deletions

diff --git a/arch/arm/kernel/head-nommu.S b/arch/arm/kernel/head-nommu.S
index ac9eb3d..f359a18 100644
--- a/arch/arm/kernel/head-nommu.S
+++ b/arch/arm/kernel/head-nommu.S
@@ -9,7 +9,6 @@
  * published by the Free Software Foundation.
  *
  *  Common kernel startup code (non-paged MM)
- *    for 32-bit CPUs which has a process ID register(CP15).
  *
  */
 #include <linux/linkage.h>
@@ -40,7 +39,11 @@
 ENTRY(stext)
 	msr	cpsr_c, #PSR_F_BIT | PSR_I_BIT | SVC_MODE @ ensure svc mode
 						@ and irqs disabled
+#ifndef CONFIG_CPU_CP15
+	ldr	r9, =CONFIG_PROCESSOR_ID
+#else
 	mrc	p15, 0, r9, c0, c0		@ get processor id
+#endif
 	bl	__lookup_processor_type		@ r5=procinfo r9=cpuid
 	movs	r10, r5				@ invalid processor (r5=0)?
 	beq	__error_p				@ yes, error 'p'
@@ -58,6 +61,7 @@ ENTRY(stext)
  */
 	.type	__after_proc_init, %function
 __after_proc_init:
+#ifdef CONFIG_CPU_CP15
 	mrc	p15, 0, r0, c1, c0, 0		@ read control reg
 #ifdef CONFIG_ALIGNMENT_TRAP
 	orr	r0, r0, #CR_A
@@ -73,7 +77,13 @@ __after_proc_init:
 #ifdef CONFIG_CPU_ICACHE_DISABLE
 	bic	r0, r0, #CR_I
 #endif
+#ifdef CONFIG_CPU_HIGH_VECTOR
+	orr	r0, r0, #CR_V
+#else
+	bic	r0, r0, #CR_V
+#endif
 	mcr	p15, 0, r0, c1, c0, 0		@ write control reg
+#endif /* CONFIG_CPU_CP15 */
 
 	mov	pc, r13				@ clear the BSS and jump
 						@ to start_kernel
diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c
index 298363d..1b06158 100644
--- a/arch/arm/kernel/module.c
+++ b/arch/arm/kernel/module.c
@@ -2,6 +2,7 @@
  *  linux/arch/arm/kernel/module.c
  *
  *  Copyright (C) 2002 Russell King.
+ *  Modified for nommu by Hyok S. Choi
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -32,6 +33,7 @@ extern void _etext;
 #define MODULE_START	(((unsigned long)&_etext + ~PGDIR_MASK) & PGDIR_MASK)
 #endif
 
+#ifdef CONFIG_MMU
 void *module_alloc(unsigned long size)
 {
 	struct vm_struct *area;
@@ -46,6 +48,12 @@ void *module_alloc(unsigned long size)
 
 	return __vmalloc_area(area, GFP_KERNEL, PAGE_KERNEL);
 }
+#else /* CONFIG_MMU */
+void *module_alloc(unsigned long size)
+{
+	return size == 0 ? NULL : vmalloc(size);
+}
+#endif /* !CONFIG_MMU */
 
 void module_free(struct module *module, void *region)
 {
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 3079535..bf35c17 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -221,16 +221,26 @@ void __show_regs(struct pt_regs *regs)
 		processor_modes[processor_mode(regs)],
 		thumb_mode(regs) ? " (T)" : "",
 		get_fs() == get_ds() ? "kernel" : "user");
+#if CONFIG_CPU_CP15
 	{
-		unsigned int ctrl, transbase, dac;
+		unsigned int ctrl;
 		  __asm__ (
 		"	mrc p15, 0, %0, c1, c0\n"
-		"	mrc p15, 0, %1, c2, c0\n"
-		"	mrc p15, 0, %2, c3, c0\n"
-		: "=r" (ctrl), "=r" (transbase), "=r" (dac));
-		printk("Control: %04X  Table: %08X  DAC: %08X\n",
-		  	ctrl, transbase, dac);
+		: "=r" (ctrl));
+		printk("Control: %04X\n", ctrl);
 	}
+#ifdef CONFIG_CPU_CP15_MMU
+	{
+		unsigned int transbase, dac;
+		  __asm__ (
+		"	mrc p15, 0, %0, c2, c0\n"
+		"	mrc p15, 0, %1, c3, c0\n"
+		: "=r" (transbase), "=r" (dac));
+		printk("Table: %08X  DAC: %08X\n",
+		  	transbase, dac);
+	}
+#endif
+#endif
 }
 
 void show_regs(struct pt_regs * regs)