* linux/arch/arm/mm/proc-sa1100.S
*
* Copyright (C) 1997-2002 Russell King
- * 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 version 2 as
#include <asm/asm-offsets.h>
#include <asm/procinfo.h>
#include <asm/hardware.h>
-#include <asm/pgtable-hwdef.h>
#include <asm/pgtable.h>
-#include "proc-macros.S"
-
/*
* the cache line size of the I and D cache
*/
#define DCACHELINESIZE 32
+#define FLUSH_OFFSET 32768
+
+ .macro flush_1100_dcache rd, ra, re
+ ldr \rd, =flush_base
+ ldr \ra, [\rd]
+ eor \ra, \ra, #FLUSH_OFFSET
+ str \ra, [\rd]
+ add \re, \ra, #8192 @ only necessary for 8k
+1001: ldr \rd, [\ra], #DCACHELINESIZE
+ teq \re, \ra
+ bne 1001b
+#ifdef FLUSH_BASE_MINICACHE
+ add \ra, \ra, #FLUSH_BASE_MINICACHE - FLUSH_BASE
+ add \re, \ra, #512 @ only 512 bytes
+1002: ldr \rd, [\ra], #DCACHELINESIZE
+ teq \re, \ra
+ bne 1002b
+#endif
+ .endm
+
+ .data
+flush_base:
+ .long FLUSH_BASE
+ .text
__INIT
stmfd sp!, {lr}
mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE
msr cpsr_c, ip
- bl v4wb_flush_kern_cache_all
- mcr p15, 0, ip, c15, c2, 2 @ Disable clock switching
+ flush_1100_dcache r0, r1, r2 @ clean caches
+ mov r0, #0
+ mcr p15, 0, r0, c15, c2, 2 @ Disable clock switching
mrc p15, 0, r0, c1, c0, 0 @ ctrl register
bic r0, r0, #0x1000 @ ...i............
bic r0, r0, #0x000e @ ............wca.
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........
*/
.align 5
ENTRY(cpu_sa1100_switch_mm)
-#ifdef CONFIG_MMU
- str lr, [sp, #-4]!
- bl v4wb_flush_kern_cache_all @ clears IP
+ flush_1100_dcache r3, ip, r1
+ mov ip, #0
+ mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache
mcr p15, 0, ip, c9, c0, 0 @ invalidate RB
+ 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
- ldr pc, [sp], #4
-#else
mov pc, lr
-#endif
/*
* cpu_sa1100_set_pte(ptep, pte)
*/
.align 5
ENTRY(cpu_sa1100_set_pte)
-#ifdef CONFIG_MMU
str r1, [r0], #-2048 @ linux version
eor r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY
mov r0, r0
mcr p15, 0, r0, c7, c10, 1 @ clean D entry
mcr p15, 0, r0, c7, c10, 4 @ drain WB
-#endif
mov pc, lr
__INIT
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, sa1100_crval
- ldmia r5, {r5, r6}
mrc p15, 0, r0, c1, c0 @ get control register v4
+ ldr r5, sa1100_cr1_clear
bic r0, r0, r5
- orr r0, r0, r6
+ ldr r5, sa1100_cr1_set
+ orr r0, r0, r5
mov pc, lr
.size __sa1100_setup, . - __sa1100_setup
* ..11 0001 ..11 1101
*
*/
- .type sa1100_crval, #object
-sa1100_crval:
- crval clear=0x00003f3f, mmuset=0x0000313d, ucset=0x00001130
+ .type sa1100_cr1_clear, #object
+ .type sa1100_cr1_set, #object
+sa1100_cr1_clear:
+ .word 0x3f3f
+sa1100_cr1_set:
+ .word 0x313d
__INITDATA
PMD_SECT_CACHEABLE | \
PMD_SECT_AP_WRITE | \
PMD_SECT_AP_READ
- .long PMD_TYPE_SECT | \
- PMD_SECT_AP_WRITE | \
- PMD_SECT_AP_READ
b __sa1100_setup
.long cpu_arch_name
.long cpu_elf_name
PMD_SECT_CACHEABLE | \
PMD_SECT_AP_WRITE | \
PMD_SECT_AP_READ
- .long PMD_TYPE_SECT | \
- PMD_SECT_AP_WRITE | \
- PMD_SECT_AP_READ
b __sa1100_setup
.long cpu_arch_name
.long cpu_elf_name