diff options
Diffstat (limited to 'arch/ppc64/kernel/cpu_setup_power4.S')
| -rw-r--r-- | arch/ppc64/kernel/cpu_setup_power4.S | 233 |
1 files changed, 0 insertions, 233 deletions
diff --git a/arch/ppc64/kernel/cpu_setup_power4.S b/arch/ppc64/kernel/cpu_setup_power4.S deleted file mode 100644 index 1fb673c511f..00000000000 --- a/arch/ppc64/kernel/cpu_setup_power4.S +++ /dev/null @@ -1,233 +0,0 @@ -/* - * This file contains low level CPU setup functions. - * Copyright (C) 2003 Benjamin Herrenschmidt (benh@kernel.crashing.org) - * - * 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 the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - */ - -#include <linux/config.h> -#include <asm/processor.h> -#include <asm/page.h> -#include <asm/cputable.h> -#include <asm/ppc_asm.h> -#include <asm/asm-offsets.h> -#include <asm/cache.h> - -_GLOBAL(__970_cpu_preinit) - /* - * Do nothing if not running in HV mode - */ - mfmsr r0 - rldicl. r0,r0,4,63 - beqlr - - /* - * Deal only with PPC970 and PPC970FX. - */ - mfspr r0,SPRN_PVR - srwi r0,r0,16 - cmpwi r0,0x39 - beq 1f - cmpwi r0,0x3c - beq 1f - cmpwi r0,0x44 - bnelr -1: - - /* Make sure HID4:rm_ci is off before MMU is turned off, that large - * pages are enabled with HID4:61 and clear HID5:DCBZ_size and - * HID5:DCBZ32_ill - */ - li r0,0 - mfspr r3,SPRN_HID4 - rldimi r3,r0,40,23 /* clear bit 23 (rm_ci) */ - rldimi r3,r0,2,61 /* clear bit 61 (lg_pg_en) */ - sync - mtspr SPRN_HID4,r3 - isync - sync - mfspr r3,SPRN_HID5 - rldimi r3,r0,6,56 /* clear bits 56 & 57 (DCBZ*) */ - sync - mtspr SPRN_HID5,r3 - isync - sync - - /* Setup some basic HID1 features */ - mfspr r0,SPRN_HID1 - li r3,0x1200 /* enable i-fetch cacheability */ - sldi r3,r3,44 /* and prefetch */ - or r0,r0,r3 - mtspr SPRN_HID1,r0 - mtspr SPRN_HID1,r0 - isync - - /* Clear HIOR */ - li r0,0 - sync - mtspr SPRN_HIOR,0 /* Clear interrupt prefix */ - isync - blr - -_GLOBAL(__setup_cpu_power4) - blr - -_GLOBAL(__setup_cpu_be) - /* Set large page sizes LP=0: 16MB, LP=1: 64KB */ - addi r3, 0, 0 - ori r3, r3, HID6_LB - sldi r3, r3, 32 - nor r3, r3, r3 - mfspr r4, SPRN_HID6 - and r4, r4, r3 - addi r3, 0, 0x02000 - sldi r3, r3, 32 - or r4, r4, r3 - mtspr SPRN_HID6, r4 - blr - -_GLOBAL(__setup_cpu_ppc970) - mfspr r0,SPRN_HID0 - li r11,5 /* clear DOZE and SLEEP */ - rldimi r0,r11,52,8 /* set NAP and DPM */ - mtspr SPRN_HID0,r0 - mfspr r0,SPRN_HID0 - mfspr r0,SPRN_HID0 - mfspr r0,SPRN_HID0 - mfspr r0,SPRN_HID0 - mfspr r0,SPRN_HID0 - mfspr r0,SPRN_HID0 - sync - isync - blr - -/* Definitions for the table use to save CPU states */ -#define CS_HID0 0 -#define CS_HID1 8 -#define CS_HID4 16 -#define CS_HID5 24 -#define CS_SIZE 32 - - .data - .balign L1_CACHE_BYTES,0 -cpu_state_storage: - .space CS_SIZE - .balign L1_CACHE_BYTES,0 - .text - -/* Called in normal context to backup CPU 0 state. This - * does not include cache settings. This function is also - * called for machine sleep. This does not include the MMU - * setup, BATs, etc... but rather the "special" registers - * like HID0, HID1, HID4, etc... - */ -_GLOBAL(__save_cpu_setup) - /* Some CR fields are volatile, we back it up all */ - mfcr r7 - - /* Get storage ptr */ - LOADADDR(r5,cpu_state_storage) - - /* We only deal with 970 for now */ - mfspr r0,SPRN_PVR - srwi r0,r0,16 - cmpwi r0,0x39 - beq 1f - cmpwi r0,0x3c - beq 1f - cmpwi r0,0x44 - bne 2f - -1: /* Save HID0,1,4 and 5 */ - mfspr r3,SPRN_HID0 - std r3,CS_HID0(r5) - mfspr r3,SPRN_HID1 - std r3,CS_HID1(r5) - mfspr r3,SPRN_HID4 - std r3,CS_HID4(r5) - mfspr r3,SPRN_HID5 - std r3,CS_HID5(r5) - -2: - mtcr r7 - blr - -/* Called with no MMU context (typically MSR:IR/DR off) to - * restore CPU state as backed up by the previous - * function. This does not include cache setting - */ -_GLOBAL(__restore_cpu_setup) - /* Get storage ptr (FIXME when using anton reloc as we - * are running with translation disabled here - */ - LOADADDR(r5,cpu_state_storage) - - /* We only deal with 970 for now */ - mfspr r0,SPRN_PVR - srwi r0,r0,16 - cmpwi r0,0x39 - beq 1f - cmpwi r0,0x3c - beq 1f - cmpwi r0,0x44 - bnelr - -1: /* Before accessing memory, we make sure rm_ci is clear */ - li r0,0 - mfspr r3,SPRN_HID4 - rldimi r3,r0,40,23 /* clear bit 23 (rm_ci) */ - sync - mtspr SPRN_HID4,r3 - isync - sync - - /* Clear interrupt prefix */ - li r0,0 - sync - mtspr SPRN_HIOR,0 - isync - - /* Restore HID0 */ - ld r3,CS_HID0(r5) - sync - isync - mtspr SPRN_HID0,r3 - mfspr r3,SPRN_HID0 - mfspr r3,SPRN_HID0 - mfspr r3,SPRN_HID0 - mfspr r3,SPRN_HID0 - mfspr r3,SPRN_HID0 - mfspr r3,SPRN_HID0 - sync - isync - - /* Restore HID1 */ - ld r3,CS_HID1(r5) - sync - isync - mtspr SPRN_HID1,r3 - mtspr SPRN_HID1,r3 - sync - isync - - /* Restore HID4 */ - ld r3,CS_HID4(r5) - sync - isync - mtspr SPRN_HID4,r3 - sync - isync - - /* Restore HID5 */ - ld r3,CS_HID5(r5) - sync - isync - mtspr SPRN_HID5,r3 - sync - isync - blr - |