X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Farm%2Fmm%2Fproc-arm920.S;h=75c945ed6c4d3d8a339adf394c541495e9d166f0;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=d16513899999299d8820471976e506cad2aeff4e;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git

diff --git a/arch/arm/mm/proc-arm920.S b/arch/arm/mm/proc-arm920.S
index d16513899..75c945ed6 100644
--- a/arch/arm/mm/proc-arm920.S
+++ b/arch/arm/mm/proc-arm920.S
@@ -3,6 +3,7 @@
  *
  *  Copyright (C) 1999,2000 ARM Limited
  *  Copyright (C) 2000 Deep Blue Solutions Ltd.
+ *  hacked for non-paged-MM by Hyok S. Choi, 2003.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -25,12 +26,11 @@
  *  CONFIG_CPU_ARM920_CPU_IDLE -> nohlt
  */
 #include <linux/linkage.h>
-#include <linux/config.h>
 #include <linux/init.h>
 #include <asm/assembler.h>
+#include <asm/elf.h>
+#include <asm/pgtable-hwdef.h>
 #include <asm/pgtable.h>
-#include <asm/procinfo.h>
-#include <asm/hardware.h>
 #include <asm/page.h>
 #include <asm/ptrace.h>
 #include "proc-macros.S"
@@ -97,7 +97,9 @@ ENTRY(cpu_arm920_reset)
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c7, 0		@ invalidate I,D caches
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
+#ifdef CONFIG_MMU
 	mcr	p15, 0, ip, c8, c7, 0		@ invalidate I & D TLBs
+#endif
 	mrc	p15, 0, ip, c1, c0, 0		@ ctrl register
 	bic	ip, ip, #0x000f			@ ............wcam
 	bic	ip, ip, #0x1100			@ ...i...s........
@@ -317,6 +319,7 @@ ENTRY(cpu_arm920_dcache_clean_area)
  */
 	.align	5
 ENTRY(cpu_arm920_switch_mm)
+#ifdef CONFIG_MMU
 	mov	ip, #0
 #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
 	mcr	p15, 0, ip, c7, c6, 0		@ invalidate D cache
@@ -337,15 +340,17 @@ ENTRY(cpu_arm920_switch_mm)
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
 	mcr	p15, 0, r0, c2, c0, 0		@ load page table pointer
 	mcr	p15, 0, ip, c8, c7, 0		@ invalidate I & D TLBs
+#endif
 	mov	pc, lr
 
 /*
- * cpu_arm920_set_pte(ptep, pte)
+ * cpu_arm920_set_pte(ptep, pte, ext)
  *
  * Set a PTE and flush it out
  */
 	.align	5
-ENTRY(cpu_arm920_set_pte)
+ENTRY(cpu_arm920_set_pte_ext)
+#ifdef CONFIG_MMU
 	str	r1, [r0], #-2048		@ linux version
 
 	eor	r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY
@@ -372,6 +377,7 @@ ENTRY(cpu_arm920_set_pte)
 	mov	r0, r0
 	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
+#endif /* CONFIG_MMU */
 	mov	pc, lr
 
 	__INIT
@@ -381,12 +387,14 @@ __arm920_setup:
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c7		@ invalidate I,D caches on v4
 	mcr	p15, 0, r0, c7, c10, 4		@ drain write buffer on v4
+#ifdef CONFIG_MMU
 	mcr	p15, 0, r0, c8, c7		@ invalidate I,D TLBs on v4
+#endif
+	adr	r5, arm920_crval
+	ldmia	r5, {r5, r6}
 	mrc	p15, 0, r0, c1, c0		@ get control register v4
-	ldr	r5, arm920_cr1_clear
 	bic	r0, r0, r5
-	ldr	r5, arm920_cr1_set
-	orr	r0, r0, r5
+	orr	r0, r0, r6
 	mov	pc, lr
 	.size	__arm920_setup, . - __arm920_setup
 
@@ -396,12 +404,9 @@ __arm920_setup:
 	 * ..11 0001 ..11 0101
 	 * 
 	 */
-	.type	arm920_cr1_clear, #object
-	.type	arm920_cr1_set, #object
-arm920_cr1_clear:
-	.word	0x3f3f
-arm920_cr1_set:
-	.word	0x3135
+	.type	arm920_crval, #object
+arm920_crval:
+	crval	clear=0x00003f3f, mmuset=0x00003135, ucset=0x00001130
 
 	__INITDATA
 
@@ -418,7 +423,7 @@ arm920_processor_functions:
 	.word   cpu_arm920_do_idle
 	.word	cpu_arm920_dcache_clean_area
 	.word	cpu_arm920_switch_mm
-	.word	cpu_arm920_set_pte
+	.word	cpu_arm920_set_pte_ext
 	.size	arm920_processor_functions, . - arm920_processor_functions
 
 	.section ".rodata"
@@ -435,19 +440,7 @@ cpu_elf_name:
 
 	.type	cpu_arm920_name, #object
 cpu_arm920_name:
-	.ascii	"ARM920T"
-#ifndef CONFIG_CPU_ICACHE_DISABLE
-	.ascii	"i"
-#endif
-#ifndef CONFIG_CPU_DCACHE_DISABLE
-	.ascii	"d"
-#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
-	.ascii	"(wt)"
-#else
-	.ascii	"(wb)"
-#endif
-#endif
-	.ascii	"\0"
+	.asciz	"ARM920T"
 	.size	cpu_arm920_name, . - cpu_arm920_name
 
 	.align
@@ -464,6 +457,10 @@ __arm920_proc_info:
 		PMD_BIT4 | \
 		PMD_SECT_AP_WRITE | \
 		PMD_SECT_AP_READ
+	.long   PMD_TYPE_SECT | \
+		PMD_BIT4 | \
+		PMD_SECT_AP_WRITE | \
+		PMD_SECT_AP_READ
 	b	__arm920_setup
 	.long	cpu_arch_name
 	.long	cpu_elf_name