diff options
Diffstat (limited to 'arch/arm/mm/proc-arm720.S')
| -rw-r--r-- | arch/arm/mm/proc-arm720.S | 37 |
1 files changed, 28 insertions, 9 deletions
diff --git a/arch/arm/mm/proc-arm720.S b/arch/arm/mm/proc-arm720.S index 26f00ee2ad9a..c2f0705bfd49 100644 --- a/arch/arm/mm/proc-arm720.S +++ b/arch/arm/mm/proc-arm720.S @@ -4,6 +4,7 @@ * Copyright (C) 2000 Steve Hill (sjhill@cotw.com) * Rob Scott (rscott@mtrob.fdns.net) * Copyright (C) 2000 ARM Limited, Deep Blue Solutions Ltd. + * hacked for non-paged-MM by Hyok S. Choi, 2004. * * 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 @@ -29,6 +30,7 @@ * out of 'proc-arm6,7.S' per RMK discussion * 07-25-2000 SJH Added idle function. * 08-25-2000 DBS Updated for integration of ARM Ltd version. + * 04-20-2004 HSC modified for non-paged memory management mode. */ #include <linux/linkage.h> #include <linux/init.h> @@ -39,6 +41,8 @@ #include <asm/procinfo.h> #include <asm/ptrace.h> +#include "proc-macros.S" + /* * Function: arm720_proc_init (void) * : arm720_proc_fin (void) @@ -75,10 +79,12 @@ ENTRY(cpu_arm720_do_idle) * the new. */ ENTRY(cpu_arm720_switch_mm) +#ifdef CONFIG_MMU mov r1, #0 mcr p15, 0, r1, c7, c7, 0 @ invalidate cache mcr p15, 0, r0, c2, c0, 0 @ update page table ptr mcr p15, 0, r1, c8, c7, 0 @ flush TLB (v4) +#endif mov pc, lr /* @@ -89,6 +95,7 @@ ENTRY(cpu_arm720_switch_mm) */ .align 5 ENTRY(cpu_arm720_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 @@ -107,6 +114,7 @@ ENTRY(cpu_arm720_set_pte) movne r2, #0 str r2, [r0] @ hardware version +#endif mov pc, lr /* @@ -117,7 +125,9 @@ ENTRY(cpu_arm720_set_pte) ENTRY(cpu_arm720_reset) mov ip, #0 mcr p15, 0, ip, c7, c7, 0 @ invalidate cache +#ifdef CONFIG_MMU mcr p15, 0, ip, c8, c7, 0 @ flush TLB (v4) +#endif mrc p15, 0, ip, c1, c0, 0 @ get ctrl register bic ip, ip, #0x000f @ ............wcam bic ip, ip, #0x2100 @ ..v....s........ @@ -130,7 +140,9 @@ ENTRY(cpu_arm720_reset) __arm710_setup: mov r0, #0 mcr p15, 0, r0, c7, c7, 0 @ invalidate caches +#ifdef CONFIG_MMU mcr p15, 0, r0, c8, c7, 0 @ flush TLB (v4) +#endif mrc p15, 0, r0, c1, c0 @ get control register ldr r5, arm710_cr1_clear bic r0, r0, r5 @@ -156,12 +168,14 @@ arm710_cr1_set: __arm720_setup: mov r0, #0 mcr p15, 0, r0, c7, c7, 0 @ invalidate caches +#ifdef CONFIG_MMU mcr p15, 0, r0, c8, c7, 0 @ flush TLB (v4) +#endif + adr r5, arm720_crval + ldmia r5, {r5, r6} mrc p15, 0, r0, c1, c0 @ get control register - ldr r5, arm720_cr1_clear bic r0, r0, r5 - ldr r5, arm720_cr1_set - orr r0, r0, r5 + orr r0, r0, r6 mov pc, lr @ __ret (head.S) .size __arm720_setup, . - __arm720_setup @@ -171,12 +185,9 @@ __arm720_setup: * ..1. 1001 ..11 1101 * */ - .type arm720_cr1_clear, #object - .type arm720_cr1_set, #object -arm720_cr1_clear: - .word 0x2f3f -arm720_cr1_set: - .word 0x213d + .type arm720_crval, #object +arm720_crval: + crval clear=0x00002f3f, mmuset=0x0000213d, ucset=0x00000130 __INITDATA @@ -234,6 +245,10 @@ __arm710_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 __arm710_setup @ cpu_flush .long cpu_arch_name @ arch_name .long cpu_elf_name @ elf_name @@ -255,6 +270,10 @@ __arm720_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 __arm720_setup @ cpu_flush .long cpu_arch_name @ arch_name .long cpu_elf_name @ elf_name |