/* $OpenBSD: cpufunc.c,v 1.7 2006/06/15 21:35:30 drahn Exp $ */
/* $NetBSD: cpufunc.c,v 1.65 2003/11/05 12:53:15 scw Exp $ */
/*
* arm7tdmi support code Copyright (c) 2001 John Fremlin
* arm8 support code Copyright (c) 1997 ARM Limited
* arm8 support code Copyright (c) 1997 Causality Limited
* arm9 support code Copyright (C) 2001 ARM Ltd
* Copyright (c) 1997 Mark Brinicombe.
* Copyright (c) 1997 Causality Limited
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Causality Limited.
* 4. The name of Causality Limited may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY CAUSALITY LIMITED ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL CAUSALITY LIMITED BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* RiscBSD kernel project
*
* cpufuncs.c
*
* C functions for supporting CPU / MMU / TLB specific operations.
*
* Created : 30/01/97
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <machine/cpu.h>
#include <machine/bootconfig.h>
#include <uvm/uvm.h>
#include <arm/cpuconf.h>
#include <arm/cpufunc.h>
#ifdef CPU_XSCALE_80200
#include <arm/xscale/i80200reg.h>
#include <arm/xscale/i80200var.h>
#endif
#ifdef CPU_XSCALE_80321
#include <arm/xscale/i80321reg.h>
#include <arm/xscale/i80321var.h>
#endif
#ifdef CPU_XSCALE_IXP425
#include <arm/xscale/ixp425reg.h>
#include <arm/xscale/ixp425var.h>
#endif
#if defined(CPU_XSCALE_80200) || defined(CPU_XSCALE_80321)
#include <arm/xscale/xscalereg.h>
#endif
#if defined(PERFCTRS)
struct arm_pmc_funcs *arm_pmc;
#endif
/* PRIMARY CACHE VARIABLES */
int arm_picache_size;
int arm_picache_line_size;
int arm_picache_ways;
int arm_pdcache_size; /* and unified */
int arm_pdcache_line_size;
int arm_pdcache_ways;
int arm_pcache_type;
int arm_pcache_unified;
int arm_dcache_align;
int arm_dcache_align_mask;
/* 1 == use cpu_sleep(), 0 == don't */
int cpu_do_powersave;
#ifdef CPU_ARM3
struct cpu_functions arm3_cpufuncs = {
/* CPU functions */
cpufunc_id, /* id */
cpufunc_nullop, /* cpwait */
/* MMU functions */
arm3_control, /* control */
NULL, /* domain */
NULL, /* setttb */
NULL, /* faultstatus */
NULL, /* faultaddress */
/* TLB functions */
cpufunc_nullop, /* tlb_flushID */
(void *)cpufunc_nullop, /* tlb_flushID_SE */
cpufunc_nullop, /* tlb_flushI */
(void *)cpufunc_nullop, /* tlb_flushI_SE */
cpufunc_nullop, /* tlb_flushD */
(void *)cpufunc_nullop, /* tlb_flushD_SE */
/* Cache operations */
cpufunc_nullop, /* icache_sync_all */
(void *) cpufunc_nullop, /* icache_sync_range */
arm3_cache_flush, /* dcache_wbinv_all */
(void *)arm3_cache_flush, /* dcache_wbinv_range */
(void *)arm3_cache_flush, /* dcache_inv_range */
(void *)cpufunc_nullop, /* dcache_wb_range */
arm3_cache_flush, /* idcache_wbinv_all */
(void *)arm3_cache_flush, /* idcache_wbinv_range */
/* Other functions */
cpufunc_nullop, /* flush_prefetchbuf */
cpufunc_nullop, /* drain_writebuf */
cpufunc_nullop, /* flush_brnchtgt_C */
(void *)cpufunc_nullop, /* flush_brnchtgt_E */
(void *)cpufunc_nullop, /* sleep */
/* Soft functions */
early_abort_fixup, /* dataabt_fixup */
cpufunc_null_fixup, /* prefetchabt_fixup */
NULL, /* context_switch */
(void *)cpufunc_nullop /* cpu setup */
};
#endif /* CPU_ARM3 */
#ifdef CPU_ARM6
struct cpu_functions arm6_cpufuncs = {
/* CPU functions */
cpufunc_id, /* id */
cpufunc_nullop, /* cpwait */
/* MMU functions */
cpufunc_control, /* control */
cpufunc_domains, /* domain */
arm67_setttb, /* setttb */
cpufunc_faultstatus, /* faultstatus */
cpufunc_faultaddress, /* faultaddress */
/* TLB functions */
arm67_tlb_flush, /* tlb_flushID */
arm67_tlb_purge, /* tlb_flushID_SE */
arm67_tlb_flush, /* tlb_flushI */
arm67_tlb_purge, /* tlb_flushI_SE */
arm67_tlb_flush, /* tlb_flushD */
arm67_tlb_purge, /* tlb_flushD_SE */
/* Cache operations */
cpufunc_nullop, /* icache_sync_all */
(void *) cpufunc_nullop, /* icache_sync_range */
arm67_cache_flush, /* dcache_wbinv_all */
(void *)arm67_cache_flush, /* dcache_wbinv_range */
(void *)arm67_cache_flush, /* dcache_inv_range */
(void *)cpufunc_nullop, /* dcache_wb_range */
arm67_cache_flush, /* idcache_wbinv_all */
(void *)arm67_cache_flush, /* idcache_wbinv_range */
/* Other functions */
cpufunc_nullop, /* flush_prefetchbuf */
cpufunc_nullop, /* drain_writebuf */
cpufunc_nullop, /* flush_brnchtgt_C */
(void *)cpufunc_nullop, /* flush_brnchtgt_E */
(void *)cpufunc_nullop, /* sleep */
/* Soft functions */
#ifdef ARM6_LATE_ABORT
late_abort_fixup, /* dataabt_fixup */
#else
early_abort_fixup, /* dataabt_fixup */
#endif
cpufunc_null_fixup, /* prefetchabt_fixup */
arm67_context_switch, /* context_switch */
arm6_setup /* cpu setup */
};
#endif /* CPU_ARM6 */
#ifdef CPU_ARM7
struct cpu_functions arm7_cpufuncs = {
/* CPU functions */
cpufunc_id, /* id */
cpufunc_nullop, /* cpwait */
/* MMU functions */
cpufunc_control, /* control */
cpufunc_domains, /* domain */
arm67_setttb, /* setttb */
cpufunc_faultstatus, /* faultstatus */
cpufunc_faultaddress, /* faultaddress */
/* TLB functions */
arm67_tlb_flush, /* tlb_flushID */
arm67_tlb_purge, /* tlb_flushID_SE */
arm67_tlb_flush, /* tlb_flushI */
arm67_tlb_purge, /* tlb_flushI_SE */
arm67_tlb_flush, /* tlb_flushD */
arm67_tlb_purge, /* tlb_flushD_SE */
/* Cache operations */
cpufunc_nullop, /* icache_sync_all */
(void *)cpufunc_nullop, /* icache_sync_range */
arm67_cache_flush, /* dcache_wbinv_all */
(void *)arm67_cache_flush, /* dcache_wbinv_range */
(void *)arm67_cache_flush, /* dcache_inv_range */
(void *)cpufunc_nullop, /* dcache_wb_range */
arm67_cache_flush, /* idcache_wbinv_all */
(void *)arm67_cache_flush, /* idcache_wbinv_range */
/* Other functions */
cpufunc_nullop, /* flush_prefetchbuf */
cpufunc_nullop, /* drain_writebuf */
cpufunc_nullop, /* flush_brnchtgt_C */
(void *)cpufunc_nullop, /* flush_brnchtgt_E */
(void *)cpufunc_nullop, /* sleep */
/* Soft functions */
late_abort_fixup, /* dataabt_fixup */
cpufunc_null_fixup, /* prefetchabt_fixup */
arm67_context_switch, /* context_switch */
arm7_setup /* cpu setup */
};
#endif /* CPU_ARM7 */
#ifdef CPU_ARM7TDMI
struct cpu_functions arm7tdmi_cpufuncs = {
/* CPU functions */
cpufunc_id, /* id */
cpufunc_nullop, /* cpwait */
/* MMU functions */
cpufunc_control, /* control */
cpufunc_domains, /* domain */
arm7tdmi_setttb, /* setttb */
cpufunc_faultstatus, /* faultstatus */
cpufunc_faultaddress, /* faultaddress */
/* TLB functions */
arm7tdmi_tlb_flushID, /* tlb_flushID */
arm7tdmi_tlb_flushID_SE, /* tlb_flushID_SE */
arm7tdmi_tlb_flushID, /* tlb_flushI */
arm7tdmi_tlb_flushID_SE, /* tlb_flushI_SE */
arm7tdmi_tlb_flushID, /* tlb_flushD */
arm7tdmi_tlb_flushID_SE, /* tlb_flushD_SE */
/* Cache operations */
cpufunc_nullop, /* icache_sync_all */
(void *)cpufunc_nullop, /* icache_sync_range */
arm7tdmi_cache_flushID, /* dcache_wbinv_all */
(void *)arm7tdmi_cache_flushID, /* dcache_wbinv_range */
(void *)arm7tdmi_cache_flushID, /* dcache_inv_range */
(void *)cpufunc_nullop, /* dcache_wb_range */
arm7tdmi_cache_flushID, /* idcache_wbinv_all */
(void *)arm7tdmi_cache_flushID, /* idcache_wbinv_range */
/* Other functions */
cpufunc_nullop, /* flush_prefetchbuf */
cpufunc_nullop, /* drain_writebuf */
cpufunc_nullop, /* flush_brnchtgt_C */
(void *)cpufunc_nullop, /* flush_brnchtgt_E */
(void *)cpufunc_nullop, /* sleep */
/* Soft functions */
late_abort_fixup, /* dataabt_fixup */
cpufunc_null_fixup, /* prefetchabt_fixup */
arm7tdmi_context_switch, /* context_switch */
arm7tdmi_setup /* cpu setup */
};
#endif /* CPU_ARM7TDMI */
#ifdef CPU_ARM8
struct cpu_functions arm8_cpufuncs = {
/* CPU functions */
cpufunc_id, /* id */
cpufunc_nullop, /* cpwait */
/* MMU functions */
cpufunc_control, /* control */
cpufunc_domains, /* domain */
arm8_setttb, /* setttb */
cpufunc_faultstatus, /* faultstatus */
cpufunc_faultaddress, /* faultaddress */
/* TLB functions */
arm8_tlb_flushID, /* tlb_flushID */
arm8_tlb_flushID_SE, /* tlb_flushID_SE */
arm8_tlb_flushID, /* tlb_flushI */
arm8_tlb_flushID_SE, /* tlb_flushI_SE */
arm8_tlb_flushID, /* tlb_flushD */
arm8_tlb_flushID_SE, /* tlb_flushD_SE */
/* Cache operations */
cpufunc_nullop, /* icache_sync_all */
(void *)cpufunc_nullop, /* icache_sync_range */
arm8_cache_purgeID, /* dcache_wbinv_all */
(void *)arm8_cache_purgeID, /* dcache_wbinv_range */
/*XXX*/ (void *)arm8_cache_purgeID, /* dcache_inv_range */
(void *)arm8_cache_cleanID, /* dcache_wb_range */
arm8_cache_purgeID, /* idcache_wbinv_all */
(void *)arm8_cache_purgeID, /* idcache_wbinv_range */
/* Other functions */
cpufunc_nullop, /* flush_prefetchbuf */
cpufunc_nullop, /* drain_writebuf */
cpufunc_nullop, /* flush_brnchtgt_C */
(void *)cpufunc_nullop, /* flush_brnchtgt_E */
(void *)cpufunc_nullop, /* sleep */
/* Soft functions */
cpufunc_null_fixup, /* dataabt_fixup */
cpufunc_null_fixup, /* prefetchabt_fixup */
arm8_context_switch, /* context_switch */
arm8_setup /* cpu setup */
};
#endif /* CPU_ARM8 */
#ifdef CPU_ARM9
struct cpu_functions arm9_cpufuncs = {
/* CPU functions */
cpufunc_id, /* id */
cpufunc_nullop, /* cpwait */
/* MMU functions */
cpufunc_control, /* control */
cpufunc_domains, /* Domain */
arm9_setttb, /* Setttb */
cpufunc_faultstatus, /* Faultstatus */
cpufunc_faultaddress, /* Faultaddress */
/* TLB functions */
armv4_tlb_flushID, /* tlb_flushID */
arm9_tlb_flushID_SE, /* tlb_flushID_SE */
armv4_tlb_flushI, /* tlb_flushI */
(void *)armv4_tlb_flushI, /* tlb_flushI_SE */
armv4_tlb_flushD, /* tlb_flushD */
armv4_tlb_flushD_SE, /* tlb_flushD_SE */
/* Cache operations */
arm9_cache_syncI, /* icache_sync_all */
arm9_cache_syncI_rng, /* icache_sync_range */
/* ...cache in write-though mode... */
arm9_cache_flushD, /* dcache_wbinv_all */
arm9_cache_flushD_rng, /* dcache_wbinv_range */
arm9_cache_flushD_rng, /* dcache_inv_range */
(void *)cpufunc_nullop, /* dcache_wb_range */
arm9_cache_flushID, /* idcache_wbinv_all */
arm9_cache_flushID_rng, /* idcache_wbinv_range */
/* Other functions */
cpufunc_nullop, /* flush_prefetchbuf */
armv4_drain_writebuf, /* drain_writebuf */
cpufunc_nullop, /* flush_brnchtgt_C */
(void *)cpufunc_nullop, /* flush_brnchtgt_E */
(void *)cpufunc_nullop, /* sleep */
/* Soft functions */
cpufunc_null_fixup, /* dataabt_fixup */
cpufunc_null_fixup, /* prefetchabt_fixup */
arm9_context_switch, /* context_switch */
arm9_setup /* cpu setup */
};
#endif /* CPU_ARM9 */
#ifdef CPU_ARM10
struct cpu_functions arm10_cpufuncs = {
/* CPU functions */
cpufunc_id, /* id */
cpufunc_nullop, /* cpwait */
/* MMU functions */
cpufunc_control, /* control */
cpufunc_domains, /* Domain */
arm10_setttb, /* Setttb */
cpufunc_faultstatus, /* Faultstatus */
cpufunc_faultaddress, /* Faultaddress */
/* TLB functions */
armv4_tlb_flushID, /* tlb_flushID */
arm10_tlb_flushID_SE, /* tlb_flushID_SE */
armv4_tlb_flushI, /* tlb_flushI */
arm10_tlb_flushI_SE, /* tlb_flushI_SE */
armv4_tlb_flushD, /* tlb_flushD */
armv4_tlb_flushD_SE, /* tlb_flushD_SE */
/* Cache operations */
arm10_icache_sync_all, /* icache_sync_all */
arm10_icache_sync_range, /* icache_sync_range */
arm10_dcache_wbinv_all, /* dcache_wbinv_all */
arm10_dcache_wbinv_range, /* dcache_wbinv_range */
arm10_dcache_inv_range, /* dcache_inv_range */
arm10_dcache_wb_range, /* dcache_wb_range */
arm10_idcache_wbinv_all, /* idcache_wbinv_all */
arm10_idcache_wbinv_range, /* idcache_wbinv_range */
/* Other functions */
cpufunc_nullop, /* flush_prefetchbuf */
armv4_drain_writebuf, /* drain_writebuf */
cpufunc_nullop, /* flush_brnchtgt_C */
(void *)cpufunc_nullop, /* flush_brnchtgt_E */
(void *)cpufunc_nullop, /* sleep */
/* Soft functions */
cpufunc_null_fixup, /* dataabt_fixup */
cpufunc_null_fixup, /* prefetchabt_fixup */
arm10_context_switch, /* context_switch */
arm10_setup /* cpu setup */
};
#endif /* CPU_ARM10 */
#ifdef CPU_SA110
struct cpu_functions sa110_cpufuncs = {
/* CPU functions */
cpufunc_id, /* id */
cpufunc_nullop, /* cpwait */
/* MMU functions */
cpufunc_control, /* control */
cpufunc_domains, /* domain */
sa1_setttb, /* setttb */
cpufunc_faultstatus, /* faultstatus */
cpufunc_faultaddress, /* faultaddress */
/* TLB functions */
armv4_tlb_flushID, /* tlb_flushID */
sa1_tlb_flushID_SE, /* tlb_flushID_SE */
armv4_tlb_flushI, /* tlb_flushI */
(void *)armv4_tlb_flushI, /* tlb_flushI_SE */
armv4_tlb_flushD, /* tlb_flushD */
armv4_tlb_flushD_SE, /* tlb_flushD_SE */
/* Cache operations */
sa1_cache_syncI, /* icache_sync_all */
sa1_cache_syncI_rng, /* icache_sync_range */
sa1_cache_purgeD, /* dcache_wbinv_all */
sa1_cache_purgeD_rng, /* dcache_wbinv_range */
/*XXX*/ sa1_cache_purgeD_rng, /* dcache_inv_range */
sa1_cache_cleanD_rng, /* dcache_wb_range */
sa1_cache_purgeID, /* idcache_wbinv_all */
sa1_cache_purgeID_rng, /* idcache_wbinv_range */
/* Other functions */
cpufunc_nullop, /* flush_prefetchbuf */
armv4_drain_writebuf, /* drain_writebuf */
cpufunc_nullop, /* flush_brnchtgt_C */
(void *)cpufunc_nullop, /* flush_brnchtgt_E */
(void *)cpufunc_nullop, /* sleep */
/* Soft functions */
cpufunc_null_fixup, /* dataabt_fixup */
cpufunc_null_fixup, /* prefetchabt_fixup */
sa110_context_switch, /* context_switch */
sa110_setup /* cpu setup */
};
#endif /* CPU_SA110 */
#if defined(CPU_SA1100) || defined(CPU_SA1110)
struct cpu_functions sa11x0_cpufuncs = {
/* CPU functions */
cpufunc_id, /* id */
cpufunc_nullop, /* cpwait */
/* MMU functions */
cpufunc_control, /* control */
cpufunc_domains, /* domain */
sa1_setttb, /* setttb */
cpufunc_faultstatus, /* faultstatus */
cpufunc_faultaddress, /* faultaddress */
/* TLB functions */
armv4_tlb_flushID, /* tlb_flushID */
sa1_tlb_flushID_SE, /* tlb_flushID_SE */
armv4_tlb_flushI, /* tlb_flushI */
(void *)armv4_tlb_flushI, /* tlb_flushI_SE */
armv4_tlb_flushD, /* tlb_flushD */
armv4_tlb_flushD_SE, /* tlb_flushD_SE */
/* Cache operations */
sa1_cache_syncI, /* icache_sync_all */
sa1_cache_syncI_rng, /* icache_sync_range */
sa1_cache_purgeD, /* dcache_wbinv_all */
sa1_cache_purgeD_rng, /* dcache_wbinv_range */
/*XXX*/ sa1_cache_purgeD_rng, /* dcache_inv_range */
sa1_cache_cleanD_rng, /* dcache_wb_range */
sa1_cache_purgeID, /* idcache_wbinv_all */
sa1_cache_purgeID_rng, /* idcache_wbinv_range */
/* Other functions */
sa11x0_drain_readbuf, /* flush_prefetchbuf */
armv4_drain_writebuf, /* drain_writebuf */
cpufunc_nullop, /* flush_brnchtgt_C */
(void *)cpufunc_nullop, /* flush_brnchtgt_E */
sa11x0_cpu_sleep, /* sleep */
/* Soft functions */
cpufunc_null_fixup, /* dataabt_fixup */
cpufunc_null_fixup, /* prefetchabt_fixup */
sa11x0_context_switch, /* context_switch */
sa11x0_setup /* cpu setup */
};
#endif /* CPU_SA1100 || CPU_SA1110 */
#ifdef CPU_IXP12X0
struct cpu_functions ixp12x0_cpufuncs = {
/* CPU functions */
cpufunc_id, /* id */
cpufunc_nullop, /* cpwait */
/* MMU functions */
cpufunc_control, /* control */
cpufunc_domains, /* domain */
sa1_setttb, /* setttb */
cpufunc_faultstatus, /* faultstatus */
cpufunc_faultaddress, /* faultaddress */
/* TLB functions */
armv4_tlb_flushID, /* tlb_flushID */
sa1_tlb_flushID_SE, /* tlb_flushID_SE */
armv4_tlb_flushI, /* tlb_flushI */
(void *)armv4_tlb_flushI, /* tlb_flushI_SE */
armv4_tlb_flushD, /* tlb_flushD */
armv4_tlb_flushD_SE, /* tlb_flushD_SE */
/* Cache operations */
sa1_cache_syncI, /* icache_sync_all */
sa1_cache_syncI_rng, /* icache_sync_range */
sa1_cache_purgeD, /* dcache_wbinv_all */
sa1_cache_purgeD_rng, /* dcache_wbinv_range */
/*XXX*/ sa1_cache_purgeD_rng, /* dcache_inv_range */
sa1_cache_cleanD_rng, /* dcache_wb_range */
sa1_cache_purgeID, /* idcache_wbinv_all */
sa1_cache_purgeID_rng, /* idcache_wbinv_range */
/* Other functions */
ixp12x0_drain_readbuf, /* flush_prefetchbuf */
armv4_drain_writebuf, /* drain_writebuf */
cpufunc_nullop, /* flush_brnchtgt_C */
(void *)cpufunc_nullop, /* flush_brnchtgt_E */
(void *)cpufunc_nullop, /* sleep */
/* Soft functions */
cpufunc_null_fixup, /* dataabt_fixup */
cpufunc_null_fixup, /* prefetchabt_fixup */
ixp12x0_context_switch, /* context_switch */
ixp12x0_setup /* cpu setup */
};
#endif /* CPU_IXP12X0 */
#if defined(CPU_XSCALE_80200) || defined(CPU_XSCALE_80321) || \
defined(CPU_XSCALE_PXA2X0) || defined(CPU_XSCALE_IXP425)
struct cpu_functions xscale_cpufuncs = {
/* CPU functions */
cpufunc_id, /* id */
xscale_cpwait, /* cpwait */
/* MMU functions */
xscale_control, /* control */
cpufunc_domains, /* domain */
xscale_setttb, /* setttb */
cpufunc_faultstatus, /* faultstatus */
cpufunc_faultaddress, /* faultaddress */
/* TLB functions */
armv4_tlb_flushID, /* tlb_flushID */
xscale_tlb_flushID_SE, /* tlb_flushID_SE */
armv4_tlb_flushI, /* tlb_flushI */
(void *)armv4_tlb_flushI, /* tlb_flushI_SE */
armv4_tlb_flushD, /* tlb_flushD */
armv4_tlb_flushD_SE, /* tlb_flushD_SE */
/* Cache operations */
xscale_cache_syncI, /* icache_sync_all */
xscale_cache_syncI_rng, /* icache_sync_range */
xscale_cache_purgeD, /* dcache_wbinv_all */
xscale_cache_purgeD_rng, /* dcache_wbinv_range */
xscale_cache_flushD_rng, /* dcache_inv_range */
xscale_cache_cleanD_rng, /* dcache_wb_range */
xscale_cache_purgeID, /* idcache_wbinv_all */
xscale_cache_purgeID_rng, /* idcache_wbinv_range */
/* Other functions */
cpufunc_nullop, /* flush_prefetchbuf */
armv4_drain_writebuf, /* drain_writebuf */
cpufunc_nullop, /* flush_brnchtgt_C */
(void *)cpufunc_nullop, /* flush_brnchtgt_E */
xscale_cpu_sleep, /* sleep */
/* Soft functions */
cpufunc_null_fixup, /* dataabt_fixup */
cpufunc_null_fixup, /* prefetchabt_fixup */
xscale_context_switch, /* context_switch */
xscale_setup /* cpu setup */
};
#endif
/* CPU_XSCALE_80200 || CPU_XSCALE_80321 || CPU_XSCALE_PXA2X0 || CPU_XSCALE_IXP425 */
/*
* Global constants also used by locore.s
*/
struct cpu_functions cpufuncs;
u_int cputype;
u_int cpu_reset_needs_v4_MMU_disable; /* flag used in locore.s */
#if defined(CPU_ARM7TDMI) || defined(CPU_ARM8) || defined(CPU_ARM9) || \
defined (CPU_ARM10) || \
defined(CPU_XSCALE_80200) || defined(CPU_XSCALE_80321) || \
defined(CPU_XSCALE_PXA2X0) || defined(CPU_XSCALE_IXP425)
static void get_cachetype_cp15 (void);
/* Additional cache information local to this file. Log2 of some of the
above numbers. */
static int arm_dcache_l2_nsets;
static int arm_dcache_l2_assoc;
static int arm_dcache_l2_linesize;
static void
get_cachetype_cp15()
{
u_int ctype, isize, dsize;
u_int multiplier;
__asm __volatile("mrc p15, 0, %0, c0, c0, 1"
: "=r" (ctype));
/*
* ...and thus spake the ARM ARM:
*
* If an <opcode2> value corresponding to an unimplemented or
* reserved ID register is encountered, the System Control
* processor returns the value of the main ID register.
*/
if (ctype == cpufunc_id())
goto out;
if ((ctype & CPU_CT_S) == 0)
arm_pcache_unified = 1;
/*
* If you want to know how this code works, go read the ARM ARM.
*/
arm_pcache_type = CPU_CT_CTYPE(ctype);
if (arm_pcache_unified == 0) {
isize = CPU_CT_ISIZE(ctype);
multiplier = (isize & CPU_CT_xSIZE_M) ? 3 : 2;
arm_picache_line_size = 1U << (CPU_CT_xSIZE_LEN(isize) + 3);
if (CPU_CT_xSIZE_ASSOC(isize) == 0) {
if (isize & CPU_CT_xSIZE_M)
arm_picache_line_size = 0; /* not present */
else
arm_picache_ways = 1;
} else {
arm_picache_ways = multiplier <<
(CPU_CT_xSIZE_ASSOC(isize) - 1);
}
arm_picache_size = multiplier << (CPU_CT_xSIZE_SIZE(isize) + 8);
}
dsize = CPU_CT_DSIZE(ctype);
multiplier = (dsize & CPU_CT_xSIZE_M) ? 3 : 2;
arm_pdcache_line_size = 1U << (CPU_CT_xSIZE_LEN(dsize) + 3);
if (CPU_CT_xSIZE_ASSOC(dsize) == 0) {
if (dsize & CPU_CT_xSIZE_M)
arm_pdcache_line_size = 0; /* not present */
else
arm_pdcache_ways = 1;
} else {
arm_pdcache_ways = multiplier <<
(CPU_CT_xSIZE_ASSOC(dsize) - 1);
}
arm_pdcache_size = multiplier << (CPU_CT_xSIZE_SIZE(dsize) + 8);
arm_dcache_align = arm_pdcache_line_size;
arm_dcache_l2_assoc = CPU_CT_xSIZE_ASSOC(dsize) + multiplier - 2;
arm_dcache_l2_linesize = CPU_CT_xSIZE_LEN(dsize) + 3;
arm_dcache_l2_nsets = 6 + CPU_CT_xSIZE_SIZE(dsize) -
CPU_CT_xSIZE_ASSOC(dsize) - CPU_CT_xSIZE_LEN(dsize);
out:
arm_dcache_align_mask = arm_dcache_align - 1;
}
#endif /* ARM7TDMI || ARM8 || ARM9 || XSCALE */
#if defined(CPU_ARM2) || defined(CPU_ARM250) || defined(CPU_ARM3) || \
defined(CPU_ARM6) || defined(CPU_ARM7) || defined(CPU_SA110) || \
defined(CPU_SA1100) || defined(CPU_SA1110) || defined(CPU_IXP12X0)
/* Cache information for CPUs without cache type registers. */
struct cachetab {
u_int32_t ct_cpuid;
int ct_pcache_type;
int ct_pcache_unified;
int ct_pdcache_size;
int ct_pdcache_line_size;
int ct_pdcache_ways;
int ct_picache_size;
int ct_picache_line_size;
int ct_picache_ways;
};
struct cachetab cachetab[] = {
/* cpuid, cache type, u, dsiz, ls, wy, isiz, ls, wy */
{ CPU_ID_ARM2, 0, 1, 0, 0, 0, 0, 0, 0 },
{ CPU_ID_ARM250, 0, 1, 0, 0, 0, 0, 0, 0 },
{ CPU_ID_ARM3, CPU_CT_CTYPE_WT, 1, 4096, 16, 64, 0, 0, 0 },
{ CPU_ID_ARM610, CPU_CT_CTYPE_WT, 1, 4096, 16, 64, 0, 0, 0 },
{ CPU_ID_ARM710, CPU_CT_CTYPE_WT, 1, 8192, 32, 4, 0, 0, 0 },
{ CPU_ID_ARM7500, CPU_CT_CTYPE_WT, 1, 4096, 16, 4, 0, 0, 0 },
{ CPU_ID_ARM710A, CPU_CT_CTYPE_WT, 1, 8192, 16, 4, 0, 0, 0 },
{ CPU_ID_ARM7500FE, CPU_CT_CTYPE_WT, 1, 4096, 16, 4, 0, 0, 0 },
/* XXX is this type right for SA-1? */
{ CPU_ID_SA110, CPU_CT_CTYPE_WB1, 0, 16384, 32, 32, 16384, 32, 32 },
{ CPU_ID_SA1100, CPU_CT_CTYPE_WB1, 0, 8192, 32, 32, 16384, 32, 32 },
{ CPU_ID_SA1110, CPU_CT_CTYPE_WB1, 0, 8192, 32, 32, 16384, 32, 32 },
{ CPU_ID_IXP1200, CPU_CT_CTYPE_WB1, 0, 16384, 32, 32, 16384, 32, 32 }, /* XXX */
{ 0, 0, 0, 0, 0, 0, 0, 0}
};
static void get_cachetype_table (void);
static void
get_cachetype_table()
{
int i;
u_int32_t cpuid = cpufunc_id();
for (i = 0; cachetab[i].ct_cpuid != 0; i++) {
if (cachetab[i].ct_cpuid == (cpuid & CPU_ID_CPU_MASK)) {
arm_pcache_type = cachetab[i].ct_pcache_type;
arm_pcache_unified = cachetab[i].ct_pcache_unified;
arm_pdcache_size = cachetab[i].ct_pdcache_size;
arm_pdcache_line_size =
cachetab[i].ct_pdcache_line_size;
arm_pdcache_ways = cachetab[i].ct_pdcache_ways;
arm_picache_size = cachetab[i].ct_picache_size;
arm_picache_line_size =
cachetab[i].ct_picache_line_size;
arm_picache_ways = cachetab[i].ct_picache_ways;
}
}
arm_dcache_align = arm_pdcache_line_size;
arm_dcache_align_mask = arm_dcache_align - 1;
}
#endif /* ARM2 || ARM250 || ARM3 || ARM6 || ARM7 || SA110 || SA1100 || SA1111 || IXP12X0 */
/*
* Cannot panic here as we may not have a console yet ...
*/
int
set_cpufuncs()
{
cputype = cpufunc_id();
cputype &= CPU_ID_CPU_MASK;
/*
* NOTE: cpu_do_powersave defaults to off. If we encounter a
* CPU type where we want to use it by default, then we set it.
*/
#ifdef CPU_ARM3
if ((cputype & CPU_ID_IMPLEMENTOR_MASK) == CPU_ID_ARM_LTD &&
(cputype & 0x00000f00) == 0x00000300) {
cpufuncs = arm3_cpufuncs;
cpu_reset_needs_v4_MMU_disable = 0;
get_cachetype_table();
return 0;
}
#endif /* CPU_ARM3 */
#ifdef CPU_ARM6
if ((cputype & CPU_ID_IMPLEMENTOR_MASK) == CPU_ID_ARM_LTD &&
(cputype & 0x00000f00) == 0x00000600) {
cpufuncs = arm6_cpufuncs;
cpu_reset_needs_v4_MMU_disable = 0;
get_cachetype_table();
pmap_pte_init_generic();
return 0;
}
#endif /* CPU_ARM6 */
#ifdef CPU_ARM7
if ((cputype & CPU_ID_IMPLEMENTOR_MASK) == CPU_ID_ARM_LTD &&
CPU_ID_IS7(cputype) &&
(cputype & CPU_ID_7ARCH_MASK) == CPU_ID_7ARCH_V3) {
cpufuncs = arm7_cpufuncs;
cpu_reset_needs_v4_MMU_disable = 0;
get_cachetype_table();
pmap_pte_init_generic();
return 0;
}
#endif /* CPU_ARM7 */
#ifdef CPU_ARM7TDMI
if ((cputype & CPU_ID_IMPLEMENTOR_MASK) == CPU_ID_ARM_LTD &&
CPU_ID_IS7(cputype) &&
(cputype & CPU_ID_7ARCH_MASK) == CPU_ID_7ARCH_V4T) {
cpufuncs = arm7tdmi_cpufuncs;
cpu_reset_needs_v4_MMU_disable = 0;
get_cachetype_cp15();
pmap_pte_init_generic();
return 0;
}
#endif
#ifdef CPU_ARM8
if ((cputype & CPU_ID_IMPLEMENTOR_MASK) == CPU_ID_ARM_LTD &&
(cputype & 0x0000f000) == 0x00008000) {
cpufuncs = arm8_cpufuncs;
cpu_reset_needs_v4_MMU_disable = 0; /* XXX correct? */
get_cachetype_cp15();
pmap_pte_init_arm8();
return 0;
}
#endif /* CPU_ARM8 */
#ifdef CPU_ARM9
if (((cputype & CPU_ID_IMPLEMENTOR_MASK) == CPU_ID_ARM_LTD ||
(cputype & CPU_ID_IMPLEMENTOR_MASK) == CPU_ID_TI) &&
(cputype & 0x0000f000) == 0x00009000) {
cpufuncs = arm9_cpufuncs;
cpu_reset_needs_v4_MMU_disable = 1; /* V4 or higher */
get_cachetype_cp15();
pmap_pte_init_arm9();
return 0;
}
#endif /* CPU_ARM9 */
#ifdef CPU_ARM10
if (/* cputype == CPU_ID_ARM1020T || */
cputype == CPU_ID_ARM1020E) {
/*
* Select write-through cacheing (this isn't really an
* option on ARM1020T).
*/
cpufuncs = arm10_cpufuncs;
cpu_reset_needs_v4_MMU_disable = 1; /* V4 or higher */
get_cachetype_cp15();
arm10_dcache_sets_inc = 1U << arm_dcache_l2_linesize;
arm10_dcache_sets_max =
(1U << (arm_dcache_l2_linesize + arm_dcache_l2_nsets)) -
arm10_dcache_sets_inc;
arm10_dcache_index_inc = 1U << (32 - arm_dcache_l2_assoc);
arm10_dcache_index_max = 0U - arm10_dcache_index_inc;
pmap_pte_init_generic();
return 0;
}
#endif /* CPU_ARM10 */
#ifdef CPU_SA110
if (cputype == CPU_ID_SA110) {
cpufuncs = sa110_cpufuncs;
cpu_reset_needs_v4_MMU_disable = 1; /* SA needs it */
get_cachetype_table();
pmap_pte_init_sa1();
return 0;
}
#endif /* CPU_SA110 */
#ifdef CPU_SA1100
if (cputype == CPU_ID_SA1100) {
cpufuncs = sa11x0_cpufuncs;
cpu_reset_needs_v4_MMU_disable = 1; /* SA needs it */
get_cachetype_table();
pmap_pte_init_sa1();
/* Use powersave on this CPU. */
cpu_do_powersave = 1;
return 0;
}
#endif /* CPU_SA1100 */
#ifdef CPU_SA1110
if (cputype == CPU_ID_SA1110) {
cpufuncs = sa11x0_cpufuncs;
cpu_reset_needs_v4_MMU_disable = 1; /* SA needs it */
get_cachetype_table();
pmap_pte_init_sa1();
/* Use powersave on this CPU. */
cpu_do_powersave = 1;
return 0;
}
#endif /* CPU_SA1110 */
#ifdef CPU_IXP12X0
if (cputype == CPU_ID_IXP1200) {
cpufuncs = ixp12x0_cpufuncs;
cpu_reset_needs_v4_MMU_disable = 1;
get_cachetype_table();
pmap_pte_init_sa1();
return 0;
}
#endif /* CPU_IXP12X0 */
#ifdef CPU_XSCALE_80200
if (cputype == CPU_ID_80200) {
int rev = cpufunc_id() & CPU_ID_REVISION_MASK;
i80200_icu_init();
#ifdef PERFCTRS
/*
* Reset the Performance Monitoring Unit to a
* pristine state:
* - CCNT, PMN0, PMN1 reset to 0
* - overflow indications cleared
* - all counters disabled
*/
__asm __volatile("mcr p14, 0, %0, c0, c0, 0"
:
: "r" (PMNC_P|PMNC_C|PMNC_PMN0_IF|PMNC_PMN1_IF|
PMNC_CC_IF));
#endif /* PERFCTRS */
#if defined(XSCALE_CCLKCFG)
/*
* Crank CCLKCFG to maximum legal value.
*/
__asm __volatile ("mcr p14, 0, %0, c6, c0, 0"
:
: "r" (XSCALE_CCLKCFG));
#endif
/*
* XXX Disable ECC in the Bus Controller Unit; we
* don't really support it, yet. Clear any pending
* error indications.
*/
__asm __volatile("mcr p13, 0, %0, c0, c1, 0"
:
: "r" (BCUCTL_E0|BCUCTL_E1|BCUCTL_EV));
cpufuncs = xscale_cpufuncs;
#if defined(PERFCTRS)
xscale_pmu_init();
#endif
/*
* i80200 errata: Step-A0 and A1 have a bug where
* D$ dirty bits are not cleared on "invalidate by
* address".
*
* Workaround: Clean cache line before invalidating.
*/
if (rev == 0 || rev == 1)
cpufuncs.cf_dcache_inv_range = xscale_cache_purgeD_rng;
cpu_reset_needs_v4_MMU_disable = 1; /* XScale needs it */
get_cachetype_cp15();
pmap_pte_init_xscale();
return 0;
}
#endif /* CPU_XSCALE_80200 */
#ifdef CPU_XSCALE_80321
if (cputype == CPU_ID_80321_400 || cputype == CPU_ID_80321_600 ||
cputype == CPU_ID_80321_400_B0 || cputype == CPU_ID_80321_600_B0 ||
cputype == CPU_ID_80219_400 || cputype == CPU_ID_80219_600) {
i80321intc_init();
#ifdef PERFCTRS
/*
* Reset the Performance Monitoring Unit to a
* pristine state:
* - CCNT, PMN0, PMN1 reset to 0
* - overflow indications cleared
* - all counters disabled
*/
__asm __volatile("mcr p14, 0, %0, c0, c0, 0"
:
: "r" (PMNC_P|PMNC_C|PMNC_PMN0_IF|PMNC_PMN1_IF|
PMNC_CC_IF));
#endif /* PERFCTRS */
cpufuncs = xscale_cpufuncs;
#if defined(PERFCTRS)
xscale_pmu_init();
#endif
cpu_reset_needs_v4_MMU_disable = 1; /* XScale needs it */
get_cachetype_cp15();
pmap_pte_init_xscale();
return 0;
}
#endif /* CPU_XSCALE_80321 */
#ifdef CPU_XSCALE_PXA2X0
/* ignore core revision to test PXA2xx CPUs */
if ((cputype & ~CPU_ID_XSCALE_COREREV_MASK) == CPU_ID_PXA250 ||
(cputype & ~CPU_ID_XSCALE_COREREV_MASK) == CPU_ID_PXA27X ||
(cputype & ~CPU_ID_XSCALE_COREREV_MASK) == CPU_ID_PXA210) {
cpufuncs = xscale_cpufuncs;
#if defined(PERFCTRS)
xscale_pmu_init();
#endif
cpu_reset_needs_v4_MMU_disable = 1; /* XScale needs it */
get_cachetype_cp15();
pmap_pte_init_xscale();
/* Use powersave on this CPU. */
cpu_do_powersave = 1;
return 0;
}
#endif /* CPU_XSCALE_PXA2X0 */
#ifdef CPU_XSCALE_IXP425
if (cputype == CPU_ID_IXP425_533 || cputype == CPU_ID_IXP425_400 ||
cputype == CPU_ID_IXP425_266) {
ixp425_icu_init();
cpufuncs = xscale_cpufuncs;
#if defined(PERFCTRS)
xscale_pmu_init();
#endif
cpu_reset_needs_v4_MMU_disable = 1; /* XScale needs it */
get_cachetype_cp15();
pmap_pte_init_xscale();
return 0;
}
#endif /* CPU_XSCALE_IXP425 */
/*
* Bzzzz. And the answer was ...
*/
panic("No support for this CPU type (%08x) in kernel", cputype);
return(ARCHITECTURE_NOT_PRESENT);
}
/*
* Fixup routines for data and prefetch aborts.
*
* Several compile time symbols are used
*
* DEBUG_FAULT_CORRECTION - Print debugging information during the
* correction of registers after a fault.
* ARM6_LATE_ABORT - ARM6 supports both early and late aborts
* when defined should use late aborts
*/
/*
* Null abort fixup routine.
* For use when no fixup is required.
*/
int
cpufunc_null_fixup(arg)
void *arg;
{
return(ABORT_FIXUP_OK);
}
#if defined(CPU_ARM2) || defined(CPU_ARM250) || defined(CPU_ARM3) || \
defined(CPU_ARM6) || defined(CPU_ARM7) || defined(CPU_ARM7TDMI)
#ifdef DEBUG_FAULT_CORRECTION
#define DFC_PRINTF(x) printf x
#define DFC_DISASSEMBLE(x) disassemble(x)
#else
#define DFC_PRINTF(x) /* nothing */
#define DFC_DISASSEMBLE(x) /* nothing */
#endif
/*
* "Early" data abort fixup.
*
* For ARM2, ARM2as, ARM3 and ARM6 (in early-abort mode). Also used
* indirectly by ARM6 (in late-abort mode) and ARM7[TDMI].
*
* In early aborts, we may have to fix up LDM, STM, LDC and STC.
*/
int
early_abort_fixup(arg)
void *arg;
{
trapframe_t *frame = arg;
u_int fault_pc;
u_int fault_instruction;
int saved_lr = 0;
if ((frame->tf_spsr & PSR_MODE) == PSR_SVC32_MODE) {
/* Ok an abort in SVC mode */
/*
* Copy the SVC r14 into the usr r14 - The usr r14 is garbage
* as the fault happened in svc mode but we need it in the
* usr slot so we can treat the registers as an array of ints
* during fixing.
* NOTE: This PC is in the position but writeback is not
* allowed on r15.
* Doing it like this is more efficient than trapping this
* case in all possible locations in the following fixup code.
*/
saved_lr = frame->tf_usr_lr;
frame->tf_usr_lr = frame->tf_svc_lr;
/*
* Note the trapframe does not have the SVC r13 so a fault
* from an instruction with writeback to r13 in SVC mode is
* not allowed. This should not happen as the kstack is
* always valid.
*/
}
/* Get fault address and status from the CPU */
fault_pc = frame->tf_pc;
fault_instruction = *((volatile unsigned int *)fault_pc);
/* Decode the fault instruction and fix the registers as needed */
if ((fault_instruction & 0x0e000000) == 0x08000000) {
int base;
int loop;
int count;
int *registers = &frame->tf_r0;
DFC_PRINTF(("LDM/STM\n"));
DFC_DISASSEMBLE(fault_pc);
if (fault_instruction & (1 << 21)) {
DFC_PRINTF(("This instruction must be corrected\n"));
base = (fault_instruction >> 16) & 0x0f;
if (base == 15)
return ABORT_FIXUP_FAILED;
/* Count registers transferred */
count = 0;
for (loop = 0; loop < 16; ++loop) {
if (fault_instruction & (1<<loop))
++count;
}
DFC_PRINTF(("%d registers used\n", count));
DFC_PRINTF(("Corrected r%d by %d bytes ",
base, count * 4));
if (fault_instruction & (1 << 23)) {
DFC_PRINTF(("down\n"));
registers[base] -= count * 4;
} else {
DFC_PRINTF(("up\n"));
registers[base] += count * 4;
}
}
} else if ((fault_instruction & 0x0e000000) == 0x0c000000) {
int base;
int offset;
int *registers = &frame->tf_r0;
/* REGISTER CORRECTION IS REQUIRED FOR THESE INSTRUCTIONS */
DFC_DISASSEMBLE(fault_pc);
/* Only need to fix registers if write back is turned on */
if ((fault_instruction & (1 << 21)) != 0) {
base = (fault_instruction >> 16) & 0x0f;
if (base == 13 &&
(frame->tf_spsr & PSR_MODE) == PSR_SVC32_MODE)
return ABORT_FIXUP_FAILED;
if (base == 15)
return ABORT_FIXUP_FAILED;
offset = (fault_instruction & 0xff) << 2;
DFC_PRINTF(("r%d=%08x\n", base, registers[base]));
if ((fault_instruction & (1 << 23)) != 0)
offset = -offset;
registers[base] += offset;
DFC_PRINTF(("r%d=%08x\n", base, registers[base]));
}
} else if ((fault_instruction & 0x0e000000) == 0x0c000000)
return ABORT_FIXUP_FAILED;
if ((frame->tf_spsr & PSR_MODE) == PSR_SVC32_MODE) {
/* Ok an abort in SVC mode */
/*
* Copy the SVC r14 into the usr r14 - The usr r14 is garbage
* as the fault happened in svc mode but we need it in the
* usr slot so we can treat the registers as an array of ints
* during fixing.
* NOTE: This PC is in the position but writeback is not
* allowed on r15.
* Doing it like this is more efficient than trapping this
* case in all possible locations in the prior fixup code.
*/
frame->tf_svc_lr = frame->tf_usr_lr;
frame->tf_usr_lr = saved_lr;
/*
* Note the trapframe does not have the SVC r13 so a fault
* from an instruction with writeback to r13 in SVC mode is
* not allowed. This should not happen as the kstack is
* always valid.
*/
}
return(ABORT_FIXUP_OK);
}
#endif /* CPU_ARM2/250/3/6/7 */
#if (defined(CPU_ARM6) && defined(ARM6_LATE_ABORT)) || defined(CPU_ARM7) || \
defined(CPU_ARM7TDMI)
/*
* "Late" (base updated) data abort fixup
*
* For ARM6 (in late-abort mode) and ARM7.
*
* In this model, all data-transfer instructions need fixing up. We defer
* LDM, STM, LDC and STC fixup to the early-abort handler.
*/
int
late_abort_fixup(arg)
void *arg;
{
trapframe_t *frame = arg;
u_int fault_pc;
u_int fault_instruction;
int saved_lr = 0;
if ((frame->tf_spsr & PSR_MODE) == PSR_SVC32_MODE) {
/* Ok an abort in SVC mode */
/*
* Copy the SVC r14 into the usr r14 - The usr r14 is garbage
* as the fault happened in svc mode but we need it in the
* usr slot so we can treat the registers as an array of ints
* during fixing.
* NOTE: This PC is in the position but writeback is not
* allowed on r15.
* Doing it like this is more efficient than trapping this
* case in all possible locations in the following fixup code.
*/
saved_lr = frame->tf_usr_lr;
frame->tf_usr_lr = frame->tf_svc_lr;
/*
* Note the trapframe does not have the SVC r13 so a fault
* from an instruction with writeback to r13 in SVC mode is
* not allowed. This should not happen as the kstack is
* always valid.
*/
}
/* Get fault address and status from the CPU */
fault_pc = frame->tf_pc;
fault_instruction = *((volatile unsigned int *)fault_pc);
/* Decode the fault instruction and fix the registers as needed */
/* Was is a swap instruction ? */
if ((fault_instruction & 0x0fb00ff0) == 0x01000090) {
DFC_DISASSEMBLE(fault_pc);
} else if ((fault_instruction & 0x0c000000) == 0x04000000) {
/* Was is a ldr/str instruction */
/* This is for late abort only */
int base;
int offset;
int *registers = &frame->tf_r0;
DFC_DISASSEMBLE(fault_pc);
/* This is for late abort only */
if ((fault_instruction & (1 << 24)) == 0
|| (fault_instruction & (1 << 21)) != 0) {
/* postindexed ldr/str with no writeback */
base = (fault_instruction >> 16) & 0x0f;
if (base == 13 &&
(frame->tf_spsr & PSR_MODE) == PSR_SVC32_MODE)
return ABORT_FIXUP_FAILED;
if (base == 15)
return ABORT_FIXUP_FAILED;
DFC_PRINTF(("late abt fix: r%d=%08x : ",
base, registers[base]));
if ((fault_instruction & (1 << 25)) == 0) {
/* Immediate offset - easy */
offset = fault_instruction & 0xfff;
if ((fault_instruction & (1 << 23)))
offset = -offset;
registers[base] += offset;
DFC_PRINTF(("imm=%08x ", offset));
} else {
/* offset is a shifted register */
int shift;
offset = fault_instruction & 0x0f;
if (offset == base)
return ABORT_FIXUP_FAILED;
/*
* Register offset - hard we have to
* cope with shifts !
*/
offset = registers[offset];
if ((fault_instruction & (1 << 4)) == 0)
/* shift with amount */
shift = (fault_instruction >> 7) & 0x1f;
else {
/* shift with register */
if ((fault_instruction & (1 << 7)) != 0)
/* undefined for now so bail out */
return ABORT_FIXUP_FAILED;
shift = ((fault_instruction >> 8) & 0xf);
if (base == shift)
return ABORT_FIXUP_FAILED;
DFC_PRINTF(("shift reg=%d ", shift));
shift = registers[shift];
}
DFC_PRINTF(("shift=%08x ", shift));
switch (((fault_instruction >> 5) & 0x3)) {
case 0 : /* Logical left */
offset = (int)(((u_int)offset) << shift);
break;
case 1 : /* Logical Right */
if (shift == 0) shift = 32;
offset = (int)(((u_int)offset) >> shift);
break;
case 2 : /* Arithmetic Right */
if (shift == 0) shift = 32;
offset = (int)(((int)offset) >> shift);
break;
case 3 : /* Rotate right (rol or rxx) */
return ABORT_FIXUP_FAILED;
break;
}
DFC_PRINTF(("abt: fixed LDR/STR with "
"register offset\n"));
if ((fault_instruction & (1 << 23)))
offset = -offset;
DFC_PRINTF(("offset=%08x ", offset));
registers[base] += offset;
}
DFC_PRINTF(("r%d=%08x\n", base, registers[base]));
}
}
if ((frame->tf_spsr & PSR_MODE) == PSR_SVC32_MODE) {
/* Ok an abort in SVC mode */
/*
* Copy the SVC r14 into the usr r14 - The usr r14 is garbage
* as the fault happened in svc mode but we need it in the
* usr slot so we can treat the registers as an array of ints
* during fixing.
* NOTE: This PC is in the position but writeback is not
* allowed on r15.
* Doing it like this is more efficient than trapping this
* case in all possible locations in the prior fixup code.
*/
frame->tf_svc_lr = frame->tf_usr_lr;
frame->tf_usr_lr = saved_lr;
/*
* Note the trapframe does not have the SVC r13 so a fault
* from an instruction with writeback to r13 in SVC mode is
* not allowed. This should not happen as the kstack is
* always valid.
*/
}
/*
* Now let the early-abort fixup routine have a go, in case it
* was an LDM, STM, LDC or STC that faulted.
*/
return early_abort_fixup(arg);
}
#endif /* CPU_ARM6(LATE)/7/7TDMI */
/*
* CPU Setup code
*/
#if defined(CPU_ARM6) || defined(CPU_ARM7) || defined(CPU_ARM7TDMI) || \
defined(CPU_ARM8) || defined (CPU_ARM9) || defined(CPU_SA110) || \
defined(CPU_SA1100) || defined(CPU_SA1110) || \
defined(CPU_XSCALE_80200) || defined(CPU_XSCALE_80321) || \
defined(CPU_XSCALE_PXA2X0) || defined(CPU_XSCALE_IXP425)
#define IGN 0
#define OR 1
#define BIC 2
struct cpu_option {
char *co_name;
int co_falseop;
int co_trueop;
int co_value;
};
static u_int parse_cpu_options (char *, struct cpu_option *, u_int);
static u_int
parse_cpu_options(args, optlist, cpuctrl)
char *args;
struct cpu_option *optlist;
u_int cpuctrl;
{
int integer;
if (args == NULL)
return(cpuctrl);
while (optlist->co_name) {
if (get_bootconf_option(args, optlist->co_name,
BOOTOPT_TYPE_BOOLEAN, &integer)) {
if (integer) {
if (optlist->co_trueop == OR)
cpuctrl |= optlist->co_value;
else if (optlist->co_trueop == BIC)
cpuctrl &= ~optlist->co_value;
} else {
if (optlist->co_falseop == OR)
cpuctrl |= optlist->co_value;
else if (optlist->co_falseop == BIC)
cpuctrl &= ~optlist->co_value;
}
}
++optlist;
}
return(cpuctrl);
}
#endif /* CPU_ARM6 || CPU_ARM7 || CPU_ARM7TDMI || CPU_ARM8 || CPU_SA110 */
#if defined (CPU_ARM6) || defined(CPU_ARM7) || defined(CPU_ARM7TDMI) \
|| defined(CPU_ARM8)
struct cpu_option arm678_options[] = {
{ "cpu.cache", BIC, OR, CPU_CONTROL_IDC_ENABLE },
{ "cpu.nocache", OR, BIC, CPU_CONTROL_IDC_ENABLE },
{ "cpu.writebuf", BIC, OR, CPU_CONTROL_WBUF_ENABLE },
{ "cpu.nowritebuf", OR, BIC, CPU_CONTROL_WBUF_ENABLE },
{ NULL, IGN, IGN, 0 }
};
#endif /* CPU_ARM6 || CPU_ARM7 || CPU_ARM7TDMI || CPU_ARM8 */
#ifdef CPU_ARM6
struct cpu_option arm6_options[] = {
{ "arm6.cache", BIC, OR, CPU_CONTROL_IDC_ENABLE },
{ "arm6.nocache", OR, BIC, CPU_CONTROL_IDC_ENABLE },
{ "arm6.writebuf", BIC, OR, CPU_CONTROL_WBUF_ENABLE },
{ "arm6.nowritebuf", OR, BIC, CPU_CONTROL_WBUF_ENABLE },
{ NULL, IGN, IGN, 0 }
};
void
arm6_setup(args)
char *args;
{
int cpuctrl, cpuctrlmask;
/* Set up default control registers bits */
cpuctrl = CPU_CONTROL_MMU_ENABLE | CPU_CONTROL_32BP_ENABLE
| CPU_CONTROL_32BD_ENABLE | CPU_CONTROL_SYST_ENABLE
| CPU_CONTROL_IDC_ENABLE | CPU_CONTROL_WBUF_ENABLE;
cpuctrlmask = CPU_CONTROL_MMU_ENABLE | CPU_CONTROL_32BP_ENABLE
| CPU_CONTROL_32BD_ENABLE | CPU_CONTROL_SYST_ENABLE
| CPU_CONTROL_IDC_ENABLE | CPU_CONTROL_WBUF_ENABLE
| CPU_CONTROL_ROM_ENABLE | CPU_CONTROL_BEND_ENABLE
| CPU_CONTROL_AFLT_ENABLE;
#ifdef ARM6_LATE_ABORT
cpuctrl |= CPU_CONTROL_LABT_ENABLE;
#endif /* ARM6_LATE_ABORT */
#ifndef ARM32_DISABLE_ALIGNMENT_FAULTS
cpuctrl |= CPU_CONTROL_AFLT_ENABLE;
#endif
cpuctrl = parse_cpu_options(args, arm678_options, cpuctrl);
cpuctrl = parse_cpu_options(args, arm6_options, cpuctrl);
#ifdef __ARMEB__
cpuctrl |= CPU_CONTROL_BEND_ENABLE;
#endif
/* Clear out the cache */
cpu_idcache_wbinv_all();
/* Set the control register */
curcpu()->ci_ctrl = cpuctrl;
cpu_control(0xffffffff, cpuctrl);
}
#endif /* CPU_ARM6 */
#ifdef CPU_ARM7
struct cpu_option arm7_options[] = {
{ "arm7.cache", BIC, OR, CPU_CONTROL_IDC_ENABLE },
{ "arm7.nocache", OR, BIC, CPU_CONTROL_IDC_ENABLE },
{ "arm7.writebuf", BIC, OR, CPU_CONTROL_WBUF_ENABLE },
{ "arm7.nowritebuf", OR, BIC, CPU_CONTROL_WBUF_ENABLE },
{ "arm700.fpaclk", BIC, OR, CPU_CONTROL_CPCLK },
{ NULL, IGN, IGN, 0 }
};
void
arm7_setup(args)
char *args;
{
int cpuctrl, cpuctrlmask;
cpuctrl = CPU_CONTROL_MMU_ENABLE | CPU_CONTROL_32BP_ENABLE
| CPU_CONTROL_32BD_ENABLE | CPU_CONTROL_SYST_ENABLE
| CPU_CONTROL_IDC_ENABLE | CPU_CONTROL_WBUF_ENABLE;
cpuctrlmask = CPU_CONTROL_MMU_ENABLE | CPU_CONTROL_32BP_ENABLE
| CPU_CONTROL_32BD_ENABLE | CPU_CONTROL_SYST_ENABLE
| CPU_CONTROL_IDC_ENABLE | CPU_CONTROL_WBUF_ENABLE
| CPU_CONTROL_CPCLK | CPU_CONTROL_LABT_ENABLE
| CPU_CONTROL_ROM_ENABLE | CPU_CONTROL_BEND_ENABLE
| CPU_CONTROL_AFLT_ENABLE;
#ifndef ARM32_DISABLE_ALIGNMENT_FAULTS
cpuctrl |= CPU_CONTROL_AFLT_ENABLE;
#endif
cpuctrl = parse_cpu_options(args, arm678_options, cpuctrl);
cpuctrl = parse_cpu_options(args, arm7_options, cpuctrl);
#ifdef __ARMEB__
cpuctrl |= CPU_CONTROL_BEND_ENABLE;
#endif
/* Clear out the cache */
cpu_idcache_wbinv_all();
/* Set the control register */
curcpu()->ci_ctrl = cpuctrl;
cpu_control(0xffffffff, cpuctrl);
}
#endif /* CPU_ARM7 */
#ifdef CPU_ARM7TDMI
struct cpu_option arm7tdmi_options[] = {
{ "arm7.cache", BIC, OR, CPU_CONTROL_IDC_ENABLE },
{ "arm7.nocache", OR, BIC, CPU_CONTROL_IDC_ENABLE },
{ "arm7.writebuf", BIC, OR, CPU_CONTROL_WBUF_ENABLE },
{ "arm7.nowritebuf", OR, BIC, CPU_CONTROL_WBUF_ENABLE },
{ "arm700.fpaclk", BIC, OR, CPU_CONTROL_CPCLK },
{ NULL, IGN, IGN, 0 }
};
void
arm7tdmi_setup(args)
char *args;
{
int cpuctrl;
cpuctrl = CPU_CONTROL_MMU_ENABLE | CPU_CONTROL_32BP_ENABLE
| CPU_CONTROL_32BD_ENABLE | CPU_CONTROL_SYST_ENABLE
| CPU_CONTROL_IDC_ENABLE | CPU_CONTROL_WBUF_ENABLE;
cpuctrl = parse_cpu_options(args, arm678_options, cpuctrl);
cpuctrl = parse_cpu_options(args, arm7tdmi_options, cpuctrl);
#ifdef __ARMEB__
cpuctrl |= CPU_CONTROL_BEND_ENABLE;
#endif
/* Clear out the cache */
cpu_idcache_wbinv_all();
/* Set the control register */
curcpu()->ci_ctrl = cpuctrl;
cpu_control(0xffffffff, cpuctrl);
}
#endif /* CPU_ARM7TDMI */
#ifdef CPU_ARM8
struct cpu_option arm8_options[] = {
{ "arm8.cache", BIC, OR, CPU_CONTROL_IDC_ENABLE },
{ "arm8.nocache", OR, BIC, CPU_CONTROL_IDC_ENABLE },
{ "arm8.writebuf", BIC, OR, CPU_CONTROL_WBUF_ENABLE },
{ "arm8.nowritebuf", OR, BIC, CPU_CONTROL_WBUF_ENABLE },
{ "cpu.branchpredict", BIC, OR, CPU_CONTROL_BPRD_ENABLE },
{ "arm8.branchpredict", BIC, OR, CPU_CONTROL_BPRD_ENABLE },
{ NULL, IGN, IGN, 0 }
};
void
arm8_setup(args)
char *args;
{
int integer;
int cpuctrl, cpuctrlmask;
int clocktest;
int setclock = 0;
cpuctrl = CPU_CONTROL_MMU_ENABLE | CPU_CONTROL_32BP_ENABLE
| CPU_CONTROL_32BD_ENABLE | CPU_CONTROL_SYST_ENABLE
| CPU_CONTROL_IDC_ENABLE | CPU_CONTROL_WBUF_ENABLE;
cpuctrlmask = CPU_CONTROL_MMU_ENABLE | CPU_CONTROL_32BP_ENABLE
| CPU_CONTROL_32BD_ENABLE | CPU_CONTROL_SYST_ENABLE
| CPU_CONTROL_IDC_ENABLE | CPU_CONTROL_WBUF_ENABLE
| CPU_CONTROL_BPRD_ENABLE | CPU_CONTROL_ROM_ENABLE
| CPU_CONTROL_BEND_ENABLE | CPU_CONTROL_AFLT_ENABLE;
#ifndef ARM32_DISABLE_ALIGNMENT_FAULTS
cpuctrl |= CPU_CONTROL_AFLT_ENABLE;
#endif
cpuctrl = parse_cpu_options(args, arm678_options, cpuctrl);
cpuctrl = parse_cpu_options(args, arm8_options, cpuctrl);
#ifdef __ARMEB__
cpuctrl |= CPU_CONTROL_BEND_ENABLE;
#endif
/* Get clock configuration */
clocktest = arm8_clock_config(0, 0) & 0x0f;
/* Special ARM8 clock and test configuration */
if (get_bootconf_option(args, "arm8.clock.reset", BOOTOPT_TYPE_BOOLEAN, &integer)) {
clocktest = 0;
setclock = 1;
}
if (get_bootconf_option(args, "arm8.clock.dynamic", BOOTOPT_TYPE_BOOLEAN, &integer)) {
if (integer)
clocktest |= 0x01;
else
clocktest &= ~(0x01);
setclock = 1;
}
if (get_bootconf_option(args, "arm8.clock.sync", BOOTOPT_TYPE_BOOLEAN, &integer)) {
if (integer)
clocktest |= 0x02;
else
clocktest &= ~(0x02);
setclock = 1;
}
if (get_bootconf_option(args, "arm8.clock.fast", BOOTOPT_TYPE_BININT, &integer)) {
clocktest = (clocktest & ~0xc0) | (integer & 3) << 2;
setclock = 1;
}
if (get_bootconf_option(args, "arm8.test", BOOTOPT_TYPE_BININT, &integer)) {
clocktest |= (integer & 7) << 5;
setclock = 1;
}
/* Clear out the cache */
cpu_idcache_wbinv_all();
/* Set the control register */
curcpu()->ci_ctrl = cpuctrl;
cpu_control(0xffffffff, cpuctrl);
/* Set the clock/test register */
if (setclock)
arm8_clock_config(0x7f, clocktest);
}
#endif /* CPU_ARM8 */
#ifdef CPU_ARM9
struct cpu_option arm9_options[] = {
{ "cpu.cache", BIC, OR, (CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE) },
{ "cpu.nocache", OR, BIC, (CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE) },
{ "arm9.cache", BIC, OR, (CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE) },
{ "arm9.icache", BIC, OR, CPU_CONTROL_IC_ENABLE },
{ "arm9.dcache", BIC, OR, CPU_CONTROL_DC_ENABLE },
{ "cpu.writebuf", BIC, OR, CPU_CONTROL_WBUF_ENABLE },
{ "cpu.nowritebuf", OR, BIC, CPU_CONTROL_WBUF_ENABLE },
{ "arm9.writebuf", BIC, OR, CPU_CONTROL_WBUF_ENABLE },
{ NULL, IGN, IGN, 0 }
};
void
arm9_setup(args)
char *args;
{
int cpuctrl, cpuctrlmask;
cpuctrl = CPU_CONTROL_MMU_ENABLE | CPU_CONTROL_32BP_ENABLE
| CPU_CONTROL_32BD_ENABLE | CPU_CONTROL_SYST_ENABLE
| CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE
| CPU_CONTROL_WBUF_ENABLE;
cpuctrlmask = CPU_CONTROL_MMU_ENABLE | CPU_CONTROL_32BP_ENABLE
| CPU_CONTROL_32BD_ENABLE | CPU_CONTROL_SYST_ENABLE
| CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE
| CPU_CONTROL_WBUF_ENABLE | CPU_CONTROL_ROM_ENABLE
| CPU_CONTROL_BEND_ENABLE | CPU_CONTROL_AFLT_ENABLE
| CPU_CONTROL_LABT_ENABLE | CPU_CONTROL_BPRD_ENABLE
| CPU_CONTROL_CPCLK;
#ifndef ARM32_DISABLE_ALIGNMENT_FAULTS
cpuctrl |= CPU_CONTROL_AFLT_ENABLE;
#endif
cpuctrl = parse_cpu_options(args, arm9_options, cpuctrl);
#ifdef __ARMEB__
cpuctrl |= CPU_CONTROL_BEND_ENABLE;
#endif
/* Clear out the cache */
cpu_idcache_wbinv_all();
/* Set the control register */
curcpu()->ci_ctrl = cpuctrl;
cpu_control(0xffffffff, cpuctrl);
}
#endif /* CPU_ARM9 */
#ifdef CPU_ARM10
struct cpu_option arm10_options[] = {
{ "cpu.cache", BIC, OR, (CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE) },
{ "cpu.nocache", OR, BIC, (CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE) },
{ "arm10.cache", BIC, OR, (CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE) },
{ "arm10.icache", BIC, OR, CPU_CONTROL_IC_ENABLE },
{ "arm10.dcache", BIC, OR, CPU_CONTROL_DC_ENABLE },
{ "cpu.writebuf", BIC, OR, CPU_CONTROL_WBUF_ENABLE },
{ "cpu.nowritebuf", OR, BIC, CPU_CONTROL_WBUF_ENABLE },
{ "arm10.writebuf", BIC, OR, CPU_CONTROL_WBUF_ENABLE },
{ NULL, IGN, IGN, 0 }
};
void
arm10_setup(args)
char *args;
{
int cpuctrl, cpuctrlmask;
cpuctrl = CPU_CONTROL_MMU_ENABLE | CPU_CONTROL_SYST_ENABLE
| CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE
| CPU_CONTROL_WBUF_ENABLE | CPU_CONTROL_BPRD_ENABLE;
cpuctrlmask = CPU_CONTROL_MMU_ENABLE | CPU_CONTROL_SYST_ENABLE
| CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE
| CPU_CONTROL_WBUF_ENABLE | CPU_CONTROL_ROM_ENABLE
| CPU_CONTROL_BEND_ENABLE | CPU_CONTROL_AFLT_ENABLE
| CPU_CONTROL_BPRD_ENABLE
| CPU_CONTROL_ROUNDROBIN | CPU_CONTROL_CPCLK;
#ifndef ARM32_DISABLE_ALIGNMENT_FAULTS
cpuctrl |= CPU_CONTROL_AFLT_ENABLE;
#endif
cpuctrl = parse_cpu_options(args, arm10_options, cpuctrl);
#ifdef __ARMEB__
cpuctrl |= CPU_CONTROL_BEND_ENABLE;
#endif
/* Clear out the cache */
cpu_idcache_wbinv_all();
/* Now really make sure they are clean. */
asm volatile ("mcr\tp15, 0, r0, c7, c7, 0" : : );
/* Set the control register */
curcpu()->ci_ctrl = cpuctrl;
cpu_control(0xffffffff, cpuctrl);
/* And again. */
cpu_idcache_wbinv_all();
}
#endif /* CPU_ARM10 */
#ifdef CPU_SA110
struct cpu_option sa110_options[] = {
{ "cpu.cache", BIC, OR, (CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE) },
{ "cpu.nocache", OR, BIC, (CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE) },
{ "sa110.cache", BIC, OR, (CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE) },
{ "sa110.icache", BIC, OR, CPU_CONTROL_IC_ENABLE },
{ "sa110.dcache", BIC, OR, CPU_CONTROL_DC_ENABLE },
{ "cpu.writebuf", BIC, OR, CPU_CONTROL_WBUF_ENABLE },
{ "cpu.nowritebuf", OR, BIC, CPU_CONTROL_WBUF_ENABLE },
{ "sa110.writebuf", BIC, OR, CPU_CONTROL_WBUF_ENABLE },
{ NULL, IGN, IGN, 0 }
};
void
sa110_setup(args)
char *args;
{
int cpuctrl, cpuctrlmask;
cpuctrl = CPU_CONTROL_MMU_ENABLE | CPU_CONTROL_32BP_ENABLE
| CPU_CONTROL_32BD_ENABLE | CPU_CONTROL_SYST_ENABLE
| CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE
| CPU_CONTROL_WBUF_ENABLE;
cpuctrlmask = CPU_CONTROL_MMU_ENABLE | CPU_CONTROL_32BP_ENABLE
| CPU_CONTROL_32BD_ENABLE | CPU_CONTROL_SYST_ENABLE
| CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE
| CPU_CONTROL_WBUF_ENABLE | CPU_CONTROL_ROM_ENABLE
| CPU_CONTROL_BEND_ENABLE | CPU_CONTROL_AFLT_ENABLE
| CPU_CONTROL_LABT_ENABLE | CPU_CONTROL_BPRD_ENABLE
| CPU_CONTROL_CPCLK;
#ifndef ARM32_DISABLE_ALIGNMENT_FAULTS
cpuctrl |= CPU_CONTROL_AFLT_ENABLE;
#endif
cpuctrl = parse_cpu_options(args, sa110_options, cpuctrl);
#ifdef __ARMEB__
cpuctrl |= CPU_CONTROL_BEND_ENABLE;
#endif
/* Clear out the cache */
cpu_idcache_wbinv_all();
/* Set the control register */
curcpu()->ci_ctrl = cpuctrl;
/* cpu_control(cpuctrlmask, cpuctrl);*/
cpu_control(0xffffffff, cpuctrl);
/*
* enable clockswitching, note that this doesn't read or write to r0,
* r0 is just to make it valid asm
*/
__asm ("mcr 15, 0, r0, c15, c1, 2");
}
#endif /* CPU_SA110 */
#if defined(CPU_SA1100) || defined(CPU_SA1110)
struct cpu_option sa11x0_options[] = {
{ "cpu.cache", BIC, OR, (CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE) },
{ "cpu.nocache", OR, BIC, (CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE) },
{ "sa11x0.cache", BIC, OR, (CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE) },
{ "sa11x0.icache", BIC, OR, CPU_CONTROL_IC_ENABLE },
{ "sa11x0.dcache", BIC, OR, CPU_CONTROL_DC_ENABLE },
{ "cpu.writebuf", BIC, OR, CPU_CONTROL_WBUF_ENABLE },
{ "cpu.nowritebuf", OR, BIC, CPU_CONTROL_WBUF_ENABLE },
{ "sa11x0.writebuf", BIC, OR, CPU_CONTROL_WBUF_ENABLE },
{ NULL, IGN, IGN, 0 }
};
void
sa11x0_setup(args)
char *args;
{
int cpuctrl, cpuctrlmask;
cpuctrl = CPU_CONTROL_MMU_ENABLE | CPU_CONTROL_32BP_ENABLE
| CPU_CONTROL_32BD_ENABLE | CPU_CONTROL_SYST_ENABLE
| CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE
| CPU_CONTROL_WBUF_ENABLE | CPU_CONTROL_LABT_ENABLE;
cpuctrlmask = CPU_CONTROL_MMU_ENABLE | CPU_CONTROL_32BP_ENABLE
| CPU_CONTROL_32BD_ENABLE | CPU_CONTROL_SYST_ENABLE
| CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE
| CPU_CONTROL_WBUF_ENABLE | CPU_CONTROL_ROM_ENABLE
| CPU_CONTROL_BEND_ENABLE | CPU_CONTROL_AFLT_ENABLE
| CPU_CONTROL_LABT_ENABLE | CPU_CONTROL_BPRD_ENABLE
| CPU_CONTROL_CPCLK | CPU_CONTROL_VECRELOC;
#ifndef ARM32_DISABLE_ALIGNMENT_FAULTS
cpuctrl |= CPU_CONTROL_AFLT_ENABLE;
#endif
cpuctrl = parse_cpu_options(args, sa11x0_options, cpuctrl);
#ifdef __ARMEB__
cpuctrl |= CPU_CONTROL_BEND_ENABLE;
#endif
if (vector_page == ARM_VECTORS_HIGH)
cpuctrl |= CPU_CONTROL_VECRELOC;
/* Clear out the cache */
cpu_idcache_wbinv_all();
/* Set the control register */
cpu_control(0xffffffff, cpuctrl);
}
#endif /* CPU_SA1100 || CPU_SA1110 */
#if defined(CPU_IXP12X0)
struct cpu_option ixp12x0_options[] = {
{ "cpu.cache", BIC, OR, (CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE) },
{ "cpu.nocache", OR, BIC, (CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE) },
{ "ixp12x0.cache", BIC, OR, (CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE) },
{ "ixp12x0.icache", BIC, OR, CPU_CONTROL_IC_ENABLE },
{ "ixp12x0.dcache", BIC, OR, CPU_CONTROL_DC_ENABLE },
{ "cpu.writebuf", BIC, OR, CPU_CONTROL_WBUF_ENABLE },
{ "cpu.nowritebuf", OR, BIC, CPU_CONTROL_WBUF_ENABLE },
{ "ixp12x0.writebuf", BIC, OR, CPU_CONTROL_WBUF_ENABLE },
{ NULL, IGN, IGN, 0 }
};
void
ixp12x0_setup(args)
char *args;
{
int cpuctrl, cpuctrlmask;
cpuctrl = CPU_CONTROL_MMU_ENABLE | CPU_CONTROL_DC_ENABLE
| CPU_CONTROL_WBUF_ENABLE | CPU_CONTROL_SYST_ENABLE
| CPU_CONTROL_IC_ENABLE;
cpuctrlmask = CPU_CONTROL_MMU_ENABLE | CPU_CONTROL_AFLT_ENABLE
| CPU_CONTROL_DC_ENABLE | CPU_CONTROL_WBUF_ENABLE
| CPU_CONTROL_BEND_ENABLE | CPU_CONTROL_SYST_ENABLE
| CPU_CONTROL_ROM_ENABLE | CPU_CONTROL_IC_ENABLE
| CPU_CONTROL_VECRELOC;
#ifndef ARM32_DISABLE_ALIGNMENT_FAULTS
cpuctrl |= CPU_CONTROL_AFLT_ENABLE;
#endif
cpuctrl = parse_cpu_options(args, ixp12x0_options, cpuctrl);
#ifdef __ARMEB__
cpuctrl |= CPU_CONTROL_BEND_ENABLE;
#endif
if (vector_page == ARM_VECTORS_HIGH)
cpuctrl |= CPU_CONTROL_VECRELOC;
/* Clear out the cache */
cpu_idcache_wbinv_all();
/* Set the control register */
curcpu()->ci_ctrl = cpuctrl;
/* cpu_control(0xffffffff, cpuctrl); */
cpu_control(cpuctrlmask, cpuctrl);
}
#endif /* CPU_IXP12X0 */
#if defined(CPU_XSCALE_80200) || defined(CPU_XSCALE_80321) || \
defined(CPU_XSCALE_PXA2X0) || defined(CPU_XSCALE_IXP425)
struct cpu_option xscale_options[] = {
{ "cpu.branchpredict", BIC, OR, CPU_CONTROL_BPRD_ENABLE },
{ "cpu.cache", BIC, OR, (CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE) },
{ "cpu.nocache", OR, BIC, (CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE) },
{ "xscale.branchpredict", BIC, OR, CPU_CONTROL_BPRD_ENABLE },
{ "xscale.cache", BIC, OR, (CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE) },
{ "xscale.icache", BIC, OR, CPU_CONTROL_IC_ENABLE },
{ "xscale.dcache", BIC, OR, CPU_CONTROL_DC_ENABLE },
{ NULL, IGN, IGN, 0 }
};
void
xscale_setup(args)
char *args;
{
uint32_t auxctl;
int cpuctrl, cpuctrlmask;
/*
* The XScale Write Buffer is always enabled. Our option
* is to enable/disable coalescing. Note that bits 6:3
* must always be enabled.
*/
cpuctrl = CPU_CONTROL_MMU_ENABLE | CPU_CONTROL_32BP_ENABLE
| CPU_CONTROL_32BD_ENABLE | CPU_CONTROL_SYST_ENABLE
| CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE
| CPU_CONTROL_WBUF_ENABLE | CPU_CONTROL_LABT_ENABLE
| CPU_CONTROL_BPRD_ENABLE;
cpuctrlmask = CPU_CONTROL_MMU_ENABLE | CPU_CONTROL_32BP_ENABLE
| CPU_CONTROL_32BD_ENABLE | CPU_CONTROL_SYST_ENABLE
| CPU_CONTROL_IC_ENABLE | CPU_CONTROL_DC_ENABLE
| CPU_CONTROL_WBUF_ENABLE | CPU_CONTROL_ROM_ENABLE
| CPU_CONTROL_BEND_ENABLE | CPU_CONTROL_AFLT_ENABLE
| CPU_CONTROL_LABT_ENABLE | CPU_CONTROL_BPRD_ENABLE
| CPU_CONTROL_CPCLK | CPU_CONTROL_VECRELOC;
#ifndef ARM32_DISABLE_ALIGNMENT_FAULTS
cpuctrl |= CPU_CONTROL_AFLT_ENABLE;
#endif
cpuctrl = parse_cpu_options(args, xscale_options, cpuctrl);
#ifdef __ARMEB__
cpuctrl |= CPU_CONTROL_BEND_ENABLE;
#endif
if (vector_page == ARM_VECTORS_HIGH)
cpuctrl |= CPU_CONTROL_VECRELOC;
/* Clear out the cache */
cpu_idcache_wbinv_all();
/*
* Set the control register. Note that bits 6:3 must always
* be set to 1.
*/
curcpu()->ci_ctrl = cpuctrl;
/* cpu_control(cpuctrlmask, cpuctrl);*/
cpu_control(0xffffffff, cpuctrl);
/* Make sure write coalescing is turned on */
__asm __volatile("mrc p15, 0, %0, c1, c0, 1"
: "=r" (auxctl));
#ifdef XSCALE_NO_COALESCE_WRITES
auxctl |= XSCALE_AUXCTL_K;
#else
auxctl &= ~XSCALE_AUXCTL_K;
#endif
__asm __volatile("mcr p15, 0, %0, c1, c0, 1"
: : "r" (auxctl));
}
#endif /* CPU_XSCALE_80200 || CPU_XSCALE_80321 || CPU_XSCALE_PXA2X0 || CPU_XSCALE_IXP425 */
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