Replace generic ARM11 option with more specific

support for ARM1136 and ARM1176

Submitted by:	Daisuke Aoyama <aoyama at peach.ne.jp>
Obtained from:	NetBSD

13 files changed, 452 insertions, 57 deletions

diff --git a/sys/arm/arm/cpufunc.c b/sys/arm/arm/cpufunc.c
index ca08685..5dc2679 100644
--- a/sys/arm/arm/cpufunc.c
+++ b/sys/arm/arm/cpufunc.c
@@ -974,18 +974,18 @@ struct cpu_functions fa526_cpufuncs = {
 };
 #endif	/* CPU_FA526 || CPU_FA626TE */
 
-#if defined(CPU_ARM11)
-struct cpu_functions arm11_cpufuncs = {
+#if defined(CPU_ARM1136)
+struct cpu_functions arm1136_cpufuncs = {
 	/* CPU functions */
 	
 	cpufunc_id,                     /* id                   */
-	arm11_drain_writebuf,           /* cpwait               */
+	cpufunc_nullop,                 /* cpwait               */
 	
 	/* MMU functions */
 	
 	cpufunc_control,                /* control              */
 	cpufunc_domains,                /* Domain               */
-	arm11_setttb,                   /* Setttb               */
+	arm11x6_setttb,                 /* Setttb               */
 	cpufunc_faultstatus,            /* Faultstatus          */
 	cpufunc_faultaddress,           /* Faultaddress         */
 	
@@ -1000,30 +1000,91 @@ struct cpu_functions arm11_cpufuncs = {
 	
 	/* Cache operations */
 	
-	armv6_icache_sync_all,          /* icache_sync_all      */
-	armv6_icache_sync_range,        /* icache_sync_range    */
+	arm11x6_icache_sync_all,        /* icache_sync_all      */
+	arm11x6_icache_sync_range,      /* icache_sync_range    */
 	
-	armv6_dcache_wbinv_all,         /* dcache_wbinv_all     */
+	arm11x6_dcache_wbinv_all,       /* dcache_wbinv_all     */
 	armv6_dcache_wbinv_range,       /* dcache_wbinv_range   */
 	armv6_dcache_inv_range,         /* dcache_inv_range     */
 	armv6_dcache_wb_range,          /* dcache_wb_range      */
 	
-	armv6_idcache_wbinv_all,        /* idcache_wbinv_all    */
-	armv6_idcache_wbinv_range,      /* idcache_wbinv_range  */
+	arm11x6_idcache_wbinv_all,      /* idcache_wbinv_all    */
+	arm11x6_idcache_wbinv_range,    /* idcache_wbinv_range  */
 	
-	(void*)cpufunc_nullop,          /* l2cache_wbinv_all    */
+	(void *)cpufunc_nullop,         /* l2cache_wbinv_all    */
 	(void *)cpufunc_nullop,         /* l2cache_wbinv_range  */
 	(void *)cpufunc_nullop,         /* l2cache_inv_range    */
 	(void *)cpufunc_nullop,         /* l2cache_wb_range     */
 	
 	/* Other functions */
 	
-	cpufunc_nullop,                 /* flush_prefetchbuf    */
+	arm11x6_flush_prefetchbuf,      /* flush_prefetchbuf    */
 	arm11_drain_writebuf,           /* drain_writebuf       */
 	cpufunc_nullop,                 /* flush_brnchtgt_C     */
 	(void *)cpufunc_nullop,         /* flush_brnchtgt_E     */
 	
-	arm11_sleep,                    /* sleep                */
+	arm11_sleep,                  	/* sleep                */
+	
+	/* Soft functions */
+	
+	cpufunc_null_fixup,             /* dataabt_fixup        */
+	cpufunc_null_fixup,             /* prefetchabt_fixup    */
+	
+	arm11_context_switch,           /* context_switch       */
+	
+	arm11x6_setup                   /* cpu setup            */
+};
+#endif /* CPU_ARM1136 */
+#if defined(CPU_ARM1176)
+struct cpu_functions arm1176_cpufuncs = {
+	/* CPU functions */
+	
+	cpufunc_id,                     /* id                   */
+	cpufunc_nullop,                 /* cpwait               */
+	
+	/* MMU functions */
+	
+	cpufunc_control,                /* control              */
+	cpufunc_domains,                /* Domain               */
+	arm11x6_setttb,                 /* Setttb               */
+	cpufunc_faultstatus,            /* Faultstatus          */
+	cpufunc_faultaddress,           /* Faultaddress         */
+	
+	/* TLB functions */
+	
+	arm11_tlb_flushID,              /* tlb_flushID          */
+	arm11_tlb_flushID_SE,           /* tlb_flushID_SE       */
+	arm11_tlb_flushI,               /* tlb_flushI           */
+	arm11_tlb_flushI_SE,            /* tlb_flushI_SE        */
+	arm11_tlb_flushD,               /* tlb_flushD           */
+	arm11_tlb_flushD_SE,            /* tlb_flushD_SE        */
+	
+	/* Cache operations */
+	
+	arm11x6_icache_sync_all,        /* icache_sync_all      */
+	arm11x6_icache_sync_range,      /* icache_sync_range    */
+	
+	arm11x6_dcache_wbinv_all,       /* dcache_wbinv_all     */
+	armv6_dcache_wbinv_range,       /* dcache_wbinv_range   */
+	armv6_dcache_inv_range,         /* dcache_inv_range     */
+	armv6_dcache_wb_range,          /* dcache_wb_range      */
+	
+	arm11x6_idcache_wbinv_all,      /* idcache_wbinv_all    */
+	arm11x6_idcache_wbinv_range,    /* idcache_wbinv_range  */
+	
+	(void *)cpufunc_nullop,         /* l2cache_wbinv_all    */
+	(void *)cpufunc_nullop,         /* l2cache_wbinv_range  */
+	(void *)cpufunc_nullop,         /* l2cache_inv_range    */
+	(void *)cpufunc_nullop,         /* l2cache_wb_range     */
+	
+	/* Other functions */
+	
+	arm11x6_flush_prefetchbuf,      /* flush_prefetchbuf    */
+	arm11_drain_writebuf,           /* drain_writebuf       */
+	cpufunc_nullop,                 /* flush_brnchtgt_C     */
+	(void *)cpufunc_nullop,         /* flush_brnchtgt_E     */
+	
+	arm11x6_sleep,                  /* sleep                */
 	
 	/* Soft functions */
 	
@@ -1032,9 +1093,9 @@ struct cpu_functions arm11_cpufuncs = {
 	
 	arm11_context_switch,           /* context_switch       */
 	
-	arm11_setup                     /* cpu setup            */
+	arm11x6_setup                   /* cpu setup            */
 };
-#endif /* CPU_ARM11 */
+#endif /*CPU_ARM1176 */
 
 #if defined(CPU_CORTEXA)
 struct cpu_functions cortexa_cpufuncs = {
@@ -1111,8 +1172,8 @@ 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_ARM9E) || defined (CPU_ARM10) || defined (CPU_ARM11) ||	\
-  defined(CPU_XSCALE_80200) || defined(CPU_XSCALE_80321) ||		\
+  defined (CPU_ARM9E) || defined (CPU_ARM10) || defined (CPU_ARM1136) ||	\
+  defined(CPU_ARM1176) || defined(CPU_XSCALE_80200) || defined(CPU_XSCALE_80321) ||		\
   defined(CPU_XSCALE_PXA2X0) || defined(CPU_XSCALE_IXP425) ||		\
   defined(CPU_FA526) || defined(CPU_FA626TE) || defined(CPU_MV_PJ4B) ||			\
   defined(CPU_XSCALE_80219) || defined(CPU_XSCALE_81342) || \
@@ -1393,15 +1454,27 @@ set_cpufuncs()
 		goto out;
 	}
 #endif /* CPU_ARM10 */
-#ifdef CPU_ARM11
-	cpufuncs = arm11_cpufuncs;
-	cpu_reset_needs_v4_MMU_disable = 1;     /* V4 or higher */
-	get_cachetype_cp15();
-	
-	pmap_pte_init_mmu_v6();
+#if defined(CPU_ARM1136) || defined(CPU_ARM1176)
+	if (cputype == CPU_ID_ARM1136JS
+	    || cputype == CPU_ID_ARM1136JSR1
+	    || cputype == CPU_ID_ARM1176JZS) {
+#ifdef CPU_ARM1136
+		if (cputype == CPU_ID_ARM1136JS
+		    || cputype == CPU_ID_ARM1136JSR1)
+			cpufuncs = arm1136_cpufuncs;
+#endif
+#ifdef CPU_ARM1176
+		if (cputype == CPU_ID_ARM1176JZS)
+			cpufuncs = arm1176_cpufuncs;
+#endif
+		cpu_reset_needs_v4_MMU_disable = 1;     /* V4 or higher */
+		get_cachetype_cp15();
+
+		pmap_pte_init_mmu_v6();
 
-	goto out;
-#endif /* CPU_ARM11 */
+		goto out;
+	}
+#endif /* CPU_ARM1136 || CPU_ARM1176 */
 #ifdef CPU_CORTEXA
 	if (cputype == CPU_ID_CORTEXA8R1 ||
 	    cputype == CPU_ID_CORTEXA8R2 ||
@@ -1962,7 +2035,7 @@ late_abort_fixup(arg)
   defined(CPU_XSCALE_80200) || defined(CPU_XSCALE_80321) ||		\
   defined(CPU_XSCALE_PXA2X0) || defined(CPU_XSCALE_IXP425) ||		\
   defined(CPU_XSCALE_80219) || defined(CPU_XSCALE_81342) || \
-  defined(CPU_ARM10) ||  defined(CPU_ARM11) || \
+  defined(CPU_ARM10) ||  defined(CPU_ARM1136) || defined(CPU_ARM1176) ||\
   defined(CPU_FA526) || defined(CPU_FA626TE)
 
 #define IGN	0
@@ -2262,7 +2335,7 @@ arm10_setup(args)
 }
 #endif	/* CPU_ARM9E || CPU_ARM10 */
 
-#ifdef CPU_ARM11
+#if defined(CPU_ARM1136) || defined(CPU_ARM1176)
 struct cpu_option arm11_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) },
@@ -2273,41 +2346,100 @@ struct cpu_option arm11_options[] = {
 };
 
 void
-arm11_setup(args)
-	char *args;
+arm11x6_setup(char *args)
 {
-	int cpuctrl;
+	int cpuctrl, cpuctrl_wax;
+	uint32_t auxctrl, auxctrl_wax;
+	uint32_t tmp, tmp2;
+	uint32_t sbz=0;
+	uint32_t cpuid;
+
+	cpuid = cpufunc_id();
+
+	cpuctrl =
+		CPU_CONTROL_MMU_ENABLE  |
+		CPU_CONTROL_DC_ENABLE   |
+		CPU_CONTROL_WBUF_ENABLE |
+		CPU_CONTROL_32BP_ENABLE |
+		CPU_CONTROL_32BD_ENABLE |
+		CPU_CONTROL_LABT_ENABLE |
+		CPU_CONTROL_SYST_ENABLE |
+		CPU_CONTROL_IC_ENABLE;
+
+	/*
+	 * "write as existing" bits
+	 * inverse of this is mask
+	 */
+	cpuctrl_wax =
+		(3 << 30) | /* SBZ */
+		(1 << 29) | /* FA */
+		(1 << 28) | /* TR */
+		(3 << 26) | /* SBZ */ 
+		(3 << 19) | /* SBZ */
+		(1 << 17);  /* SBZ */
+
+	cpuctrl |= CPU_CONTROL_BPRD_ENABLE;
+	cpuctrl |= CPU_CONTROL_V6_EXTPAGE;
 
-	cpuctrl = CPU_CONTROL_MMU_ENABLE;
-#ifndef ARM32_DISABLE_ALIGNMENT_FAULTS
-	cpuctrl |= CPU_CONTROL_AFLT_ENABLE;
-#endif
-	cpuctrl |= CPU_CONTROL_DC_ENABLE;
-	cpuctrl |= (0xf << 3);
 	cpuctrl = parse_cpu_options(args, arm11_options, cpuctrl);
+
 #ifdef __ARMEB__
 	cpuctrl |= CPU_CONTROL_BEND_ENABLE;
 #endif
-	cpuctrl |= CPU_CONTROL_SYST_ENABLE;
-	cpuctrl |= CPU_CONTROL_BPRD_ENABLE;
-	cpuctrl |= CPU_CONTROL_IC_ENABLE;
+
 	if (vector_page == ARM_VECTORS_HIGH)
 		cpuctrl |= CPU_CONTROL_VECRELOC;
-	cpuctrl |= (0x5 << 16);
-	cpuctrl |= CPU_CONTROL_V6_EXTPAGE;
 
-	/* Make sure caches are clean.  */
+	auxctrl = 0;
+	auxctrl_wax = ~0;
+	/*
+	 * This options enables the workaround for the 364296 ARM1136
+	 * r0pX errata (possible cache data corruption with
+	 * hit-under-miss enabled). It sets the undocumented bit 31 in
+	 * the auxiliary control register and the FI bit in the control
+	 * register, thus disabling hit-under-miss without putting the
+	 * processor into full low interrupt latency mode. ARM11MPCore
+	 * is not affected.
+	 */
+	if ((cpuid & CPU_ID_CPU_MASK) == CPU_ID_ARM1136JS) { /* ARM1136JSr0pX */
+		cpuctrl |= CPU_CONTROL_FI_ENABLE;
+		auxctrl = ARM1136_AUXCTL_PFI;
+		auxctrl_wax = ~ARM1136_AUXCTL_PFI;
+	}
+
+	/*
+	 * Enable an errata workaround
+	 */
+	if ((cpuid & CPU_ID_CPU_MASK) == CPU_ID_ARM1176JZS) { /* ARM1176JZSr0 */
+		auxctrl = ARM1176_AUXCTL_PHD;
+		auxctrl_wax = ~ARM1176_AUXCTL_PHD;
+	}
+
+	/* Clear out the cache */
 	cpu_idcache_wbinv_all();
-	cpu_l2cache_wbinv_all();
+
+	/* Now really make sure they are clean.  */
+	__asm volatile ("mcr\tp15, 0, %0, c7, c7, 0" : : "r"(sbz));
+
+	/* Allow detection code to find the VFP if it's fitted.  */
+	__asm volatile ("mcr\tp15, 0, %0, c1, c0, 2" : : "r" (0x0fffffff));
 
 	/* Set the control register */
 	ctrl = cpuctrl;
-	cpu_control(0xffffffff, cpuctrl);
+	cpu_control(~cpuctrl_wax, cpuctrl);
 
+	__asm volatile ("mrc	p15, 0, %0, c1, c0, 1\n\t"
+			"and	%1, %0, %2\n\t"
+			"orr	%1, %1, %3\n\t"
+			"teq	%0, %1\n\t"
+			"mcrne	p15, 0, %1, c1, c0, 1\n\t"
+			: "=r"(tmp), "=r"(tmp2) :
+			  "r"(auxctrl_wax), "r"(auxctrl));
+
+	/* And again. */
 	cpu_idcache_wbinv_all();
-	cpu_l2cache_wbinv_all();
 }
-#endif	/* CPU_ARM11 */
+#endif  /* CPU_ARM1136 || CPU_ARM1176 */
 
 #ifdef CPU_MV_PJ4B
 void
diff --git a/sys/arm/arm/cpufunc_asm_arm11x6.S b/sys/arm/arm/cpufunc_asm_arm11x6.S
new file mode 100644
index 0000000..fc9b7ec
--- /dev/null
+++ b/sys/arm/arm/cpufunc_asm_arm11x6.S
@@ -0,0 +1,216 @@
+/*	$NetBSD: cpufunc_asm_arm11x6.S,v 1.1 2012/07/21 12:19:15 skrll Exp $	*/
+
+/*
+ * Copyright (c) 2007 Microsoft
+ * 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 Microsoft
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR OR CONTRIBUTERS 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.
+ */
+
+/*-
+ * Copyright (c) 2012 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Eben Upton
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``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 THE FOUNDATION OR CONTRIBUTORS
+ * 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.
+ */
+
+
+#include <machine/asm.h>
+__FBSDID("$FreeBSD$");
+
+#if 0
+#define Invalidate_I_cache(Rtmp1, Rtmp2) \
+	mcr	p15, 0, Rtmp1, c7, c5, 0	/* Invalidate Entire I cache */
+#else
+/*
+ * Workaround for
+ *
+ *    Erratum 411920 in ARM1136 (fixed in r1p4)
+ *    Erratum 415045 in ARM1176 (fixed in r0p5?)
+ * 
+ *	- value of arg 'reg' Should Be Zero
+ */
+#define Invalidate_I_cache(Rtmp1, Rtmp2) \
+	mov	Rtmp1, #0;		/* SBZ */			\
+	mrs	Rtmp2, cpsr;						\
+	cpsid	ifa;							\
+	mcr	p15, 0, Rtmp1, c7, c5, 0;	/* Nuke Whole Icache */	\
+	mcr	p15, 0, Rtmp1, c7, c5, 0;	/* Nuke Whole Icache */	\
+	mcr	p15, 0, Rtmp1, c7, c5, 0;	/* Nuke Whole Icache */	\
+	mcr	p15, 0, Rtmp1, c7, c5, 0;	/* Nuke Whole Icache */	\
+	msr	cpsr_cx, Rtmp2;						\
+	nop;								\
+	nop;								\
+	nop;								\
+	nop;								\
+	nop;								\
+	nop;								\
+	nop;								\
+	nop;								\
+	nop;								\
+	nop;								\
+	nop;
+#endif
+
+#if 1
+#define Flush_D_cache(reg) \
+	mov	reg, #0;		/* SBZ */					\
+	mcr	p15, 0, reg, c7, c14, 0;/* Clean and Invalidate Entire Data Cache */	\
+	mcr	p15, 0, reg, c7, c10, 4;/* Data Synchronization Barrier */
+#else
+#define Flush_D_cache(reg) \
+1:	mov	reg, #0;		/* SBZ */					\
+	mcr	p15, 0, reg, c7, c14, 0;/* Clean and Invalidate Entire Data Cache */	\
+	mrc	p15, 0, reg, C7, C10, 6;/* Read Cache Dirty Status Register */		\
+	ands	reg, reg, #01;		/* Check if it is clean */			\
+	bne	1b;			/* loop if not */				\
+	mcr	p15, 0, reg, c7, c10, 4;/* Data Synchronization Barrier */
+#endif
+
+ENTRY(arm11x6_setttb)
+#ifdef PMAP_CACHE_VIVT
+	Flush_D_cache(r1)
+	Invalidate_I_cache(r1, r2)
+#else
+	mov	r1, #0
+#endif
+	mcr	p15, 0, r0, c2, c0, 0	/* load new TTB */
+	mcr	p15, 0, r1, c8, c7, 0	/* invalidate I+D TLBs */
+	mcr	p15, 0, r1, c7, c10, 4	/* drain write buffer */
+	RET
+
+ENTRY_NP(arm11x6_idcache_wbinv_all)
+	Flush_D_cache(r0)
+	Invalidate_I_cache(r0, r1)
+	RET
+
+ENTRY_NP(arm11x6_dcache_wbinv_all)
+	Flush_D_cache(r0)
+	RET
+
+ENTRY_NP(arm11x6_icache_sync_all)
+	Flush_D_cache(r0)
+	Invalidate_I_cache(r0, r1)
+	RET
+
+ENTRY_NP(arm11x6_flush_prefetchbuf)
+	mcr	p15, 0, r0, c7, c5, 4	/* Flush Prefetch Buffer */
+	RET
+
+ENTRY_NP(arm11x6_icache_sync_range)
+	add	r1, r1, r0
+	sub	r1, r1, #1
+	/* Erratum ARM1136 371025, workaround #2 */
+	/* Erratum ARM1176 371367 */
+	mrs	r2, cpsr		/* save the CPSR */
+	cpsid	ifa			/* disable interrupts (irq,fiq,abort) */
+	mov	r3, #0 
+	mcr	p15, 0, r3, c13, c0, 0	/* write FCSE (uTLB invalidate) */
+	mcr	p15, 0, r3, c7, c5, 4	/* flush prefetch buffer */
+	add	r3, pc, #0x24 
+	mcr	p15, 0, r3, c7, c13, 1	/* prefetch I-cache line */
+	mcrr	p15, 0, r1, r0, c5	/* invalidate I-cache range */
+	msr	cpsr_cx, r2		/* local_irq_restore */
+	nop 
+	nop 
+	nop 
+	nop 
+	nop 
+	nop 
+	nop 
+
+	mcrr	p15, 0, r1, r0, c12	/* clean and invalidate D cache range */ /* XXXNH */
+	mcr	p15, 0, r0, c7, c10, 4	/* drain the write buffer */
+	RET
+
+ENTRY_NP(arm11x6_idcache_wbinv_range)
+	add	r1, r1, r0
+	sub	r1, r1, #1
+	/* Erratum ARM1136 371025, workaround #2 */
+	/* Erratum ARM1176 371367 */
+	mrs	r2, cpsr		/* save the CPSR */
+	cpsid	ifa			/* disable interrupts (irq,fiq,abort) */
+	mov	r3, #0 
+	mcr	p15, 0, r3, c13, c0, 0	/* write FCSE (uTLB invalidate) */
+	mcr	p15, 0, r3, c7, c5, 4	/* flush prefetch buffer */
+	add	r3, pc, #0x24 
+	mcr	p15, 0, r3, c7, c13, 1	/* prefetch I-cache line */
+	mcrr	p15, 0, r1, r0, c5	/* invalidate I-cache range */
+	msr	cpsr_cx, r2		/* local_irq_restore */
+	nop 
+	nop 
+	nop 
+	nop 
+	nop 
+	nop 
+	nop 
+
+	mcrr	p15, 0, r1, r0, c14	/* clean and invalidate D cache range */
+	mcr	p15, 0, r0, c7, c10, 4	/* drain the write buffer */
+	RET
+
+/*
+ * Preload the cache before issuing the WFI by conditionally disabling the
+ * mcr intstructions the first time around the loop. Ensure the function is 
+ * cacheline aligned.
+ */
+	.arch	armv6
+	.p2align 5
+
+ENTRY_NP(arm11x6_sleep)
+	mov	r0, #0
+	mov	r1, #2
+1:
+	subs	r1, #1
+	nop
+	mcreq	p15, 0, r0, c7, c10, 4		/* data sync barrier */
+	mcreq	p15, 0, r0, c7, c0, 4		/* wait for interrupt */
+	nop
+	nop
+	nop
+	bne	1b
+	RET
diff --git a/sys/arm/arm/elf_trampoline.c b/sys/arm/arm/elf_trampoline.c
index 2a218bf..31e8bc5 100644
--- a/sys/arm/arm/elf_trampoline.c
+++ b/sys/arm/arm/elf_trampoline.c
@@ -63,7 +63,7 @@ void __startC(void);
 #define cpu_idcache_wbinv_all	armv5_ec_idcache_wbinv_all
 #elif defined(CPU_ARM10)
 #define cpu_idcache_wbinv_all	arm10_idcache_wbinv_all
-#elif defined(CPU_ARM11)
+#elif defined(CPU_ARM1136) || defined(CPU_ARM1176)
 #define cpu_idcache_wbinv_all	armv6_idcache_wbinv_all
 #elif defined(CPU_SA110) || defined(CPU_SA1110) || defined(CPU_SA1100) || \
     defined(CPU_IXP12X0)
diff --git a/sys/arm/arm/identcpu.c b/sys/arm/arm/identcpu.c
index e3d5d4e..56f6e06 100644
--- a/sys/arm/arm/identcpu.c
+++ b/sys/arm/arm/identcpu.c
@@ -307,6 +307,8 @@ const struct cpuidtab cpuids[] = {
 	  generic_steppings },
 	{ CPU_ID_ARM1136JSR1,	CPU_CLASS_ARM11J,	"ARM1136J-S R1",
 	  generic_steppings },
+	{ CPU_ID_ARM1176JZS,	CPU_CLASS_ARM11J,	"ARM1176JZ-S",
+	  generic_steppings },
 
 	{ CPU_ID_MV88FR131,	CPU_CLASS_MARVELL,	"Feroceon 88FR131",
 	  generic_steppings },
diff --git a/sys/arm/arm/locore.S b/sys/arm/arm/locore.S
index 8d2da54..ed7af25 100644
--- a/sys/arm/arm/locore.S
+++ b/sys/arm/arm/locore.S
@@ -168,7 +168,7 @@ Lunmapped:
 	mcr	p15, 0, r0, c2, c0, 0	/* Set TTB */
 	mcr	p15, 0, r0, c8, c7, 0	/* Flush TLB */
 
-#if defined(CPU_ARM11) || defined(CPU_CORTEXA) || defined(CPU_MV_PJ4B)
+#if defined(CPU_ARM1136) || defined(CPU_ARM1176) || defined(CPU_CORTEXA) || defined(CPU_MV_PJ4B)
 	mov	r0, #0
 	mcr	p15, 0, r0, c13, c0, 1	/* Set ASID to 0 */
 #endif
@@ -178,7 +178,7 @@ Lunmapped:
 	mcr	p15, 0, r0, c3, c0, 0
 	/* Enable MMU */
 	mrc	p15, 0, r0, c1, c0, 0
-#if defined(CPU_ARM11) || defined(CPU_CORTEXA) || defined(CPU_MV_PJ4B)
+#if defined(CPU_ARM1136) || defined(CPU_ARM1176) || defined(CPU_CORTEXA) || defined(CPU_MV_PJ4B)
 	orr	r0, r0, #CPU_CONTROL_V6_EXTPAGE
 #endif
 	orr	r0, r0, #(CPU_CONTROL_MMU_ENABLE)
@@ -363,7 +363,7 @@ Ltag:
 	mcr	p15, 0, r0, c2, c0, 0	/* Set TTB */
 	mcr	p15, 0, r0, c8, c7, 0	/* Flush TLB */
 
-#if defined(CPU_ARM11) || defined(CPU_MV_PJ4B) || defined(CPU_CORTEXA)
+#if defined(CPU_ARM1136) || defined(CPU_ARM1176) || defined(CPU_MV_PJ4B) || defined(CPU_CORTEXA)
 	mov	r0, #0
 	mcr	p15, 0, r0, c13, c0, 1	/* Set ASID to 0 */
 #endif
@@ -375,7 +375,7 @@ Ltag:
 	mcr	p15, 0, r0, c3, c0, 0
 	/* Enable MMU */
 	mrc	p15, 0, r0, c1, c0, 0
-#if defined(CPU_ARM11) || defined(CPU_MV_PJ4B) || defined(CPU_CORTEXA)
+#if defined(CPU_ARM1136) || defined(CPU_ARM1176) || defined(CPU_MV_PJ4B) || defined(CPU_CORTEXA)
 	orr	r0, r0, #CPU_CONTROL_V6_EXTPAGE
 #endif
 	orr	r0, r0, #(CPU_CONTROL_MMU_ENABLE | CPU_CONTROL_DC_ENABLE)
diff --git a/sys/arm/broadcom/bcm2835/files.bcm2835 b/sys/arm/broadcom/bcm2835/files.bcm2835
index f00c862..9885155 100644
--- a/sys/arm/broadcom/bcm2835/files.bcm2835
+++ b/sys/arm/broadcom/bcm2835/files.bcm2835
@@ -15,6 +15,7 @@ arm/broadcom/bcm2835/dwc_otg_brcm.c		optional dwcotg
 arm/arm/bus_space_generic.c                     standard
 arm/arm/bus_space_asm_generic.S                 standard
 arm/arm/cpufunc_asm_arm11.S                     standard
+arm/arm/cpufunc_asm_arm11x6.S                   standard
 arm/arm/cpufunc_asm_armv5.S                     standard
 arm/arm/cpufunc_asm_armv6.S                     standard
 arm/arm/irq_dispatch.S                          standard
diff --git a/sys/arm/conf/RPI-B b/sys/arm/conf/RPI-B
index 7e7d3ac..c7b9a5f 100644
--- a/sys/arm/conf/RPI-B
+++ b/sys/arm/conf/RPI-B
@@ -19,7 +19,7 @@
 
 ident		RPI-B
 machine		arm	armv6
-cpu 		CPU_ARM11
+cpu 		CPU_ARM1176
 
 files		"../broadcom/bcm2835/files.bcm2835"
 makeoptions	MODULES_OVERRIDE=""
diff --git a/sys/arm/conf/VERSATILEPB b/sys/arm/conf/VERSATILEPB
index 9682156..b12009dc0 100644
--- a/sys/arm/conf/VERSATILEPB
+++ b/sys/arm/conf/VERSATILEPB
@@ -19,7 +19,7 @@
 
 ident		VERSATILEPB
 machine		arm	armv6
-cpu 		CPU_ARM11
+cpu 		CPU_ARM1176
 
 files		"../versatile/files.versatile"
 makeoptions	MODULES_OVERRIDE=""
diff --git a/sys/arm/include/armreg.h b/sys/arm/include/armreg.h
index 05b3846..35fe6d7 100644
--- a/sys/arm/include/armreg.h
+++ b/sys/arm/include/armreg.h
@@ -146,6 +146,7 @@
 #define CPU_ID_ARM1026EJS	0x4106a260
 #define CPU_ID_ARM1136JS	0x4107b360
 #define CPU_ID_ARM1136JSR1	0x4117b360
+#define CPU_ID_ARM1176JZS	0x410fb760
 #define CPU_ID_CORTEXA8R1	0x411fc080
 #define CPU_ID_CORTEXA8R2	0x412fc080
 #define CPU_ID_CORTEXA8R3	0x413fc080
@@ -284,11 +285,36 @@
 #define CPU_CONTROL_VECRELOC	0x00002000 /* V: Vector relocation */
 #define CPU_CONTROL_ROUNDROBIN	0x00004000 /* RR: Predictable replacement */
 #define CPU_CONTROL_V4COMPAT	0x00008000 /* L4: ARMv4 compat LDR R15 etc */
+#define CPU_CONTROL_FI_ENABLE	0x00200000 /* FI: Low interrupt latency */
+#define CPU_CONTROL_UNAL_ENABLE 0x00400000 /* U: unaligned data access */
 #define CPU_CONTROL_V6_EXTPAGE	0x00800000 /* XP: ARMv6 extended page tables */
 #define CPU_CONTROL_L2_ENABLE	0x04000000 /* L2 Cache enabled */
 
 #define CPU_CONTROL_IDC_ENABLE	CPU_CONTROL_DC_ENABLE
 
+/* ARM11x6 Auxiliary Control Register (CP15 register 1, opcode2 1) */
+#define	ARM11X6_AUXCTL_RS	0x00000001 /* return stack */
+#define	ARM11X6_AUXCTL_DB	0x00000002 /* dynamic branch prediction */
+#define	ARM11X6_AUXCTL_SB	0x00000004 /* static branch prediction */
+#define	ARM11X6_AUXCTL_TR	0x00000008 /* MicroTLB replacement strat. */
+#define	ARM11X6_AUXCTL_EX	0x00000010 /* exclusive L1/L2 cache */
+#define	ARM11X6_AUXCTL_RA	0x00000020 /* clean entire cache disable */
+#define	ARM11X6_AUXCTL_RV	0x00000040 /* block transfer cache disable */
+#define	ARM11X6_AUXCTL_CZ	0x00000080 /* restrict cache size */
+
+/* ARM1136 Auxiliary Control Register (CP15 register 1, opcode2 1) */
+#define ARM1136_AUXCTL_PFI	0x80000000 /* PFI: partial FI mode. */
+					   /* This is an undocumented flag
+					    * used to work around a cache bug
+					    * in r0 steppings. See errata
+					    * 364296.
+					    */
+/* ARM1176 Auxiliary Control Register (CP15 register 1, opcode2 1) */   
+#define	ARM1176_AUXCTL_PHD	0x10000000 /* inst. prefetch halting disable */
+#define	ARM1176_AUXCTL_BFD	0x20000000 /* branch folding disable */
+#define	ARM1176_AUXCTL_FSD	0x40000000 /* force speculative ops disable */
+#define	ARM1176_AUXCTL_FIO	0x80000000 /* low intr latency override */
+
 /* XScale Auxillary Control Register (CP15 register 1, opcode2 1) */
 #define	XSCALE_AUXCTL_K		0x00000001 /* dis. write buffer coalescing */
 #define	XSCALE_AUXCTL_P		0x00000002 /* ECC protect page table access */
diff --git a/sys/arm/include/cpuconf.h b/sys/arm/include/cpuconf.h
index 95d4b91..986633b 100644
--- a/sys/arm/include/cpuconf.h
+++ b/sys/arm/include/cpuconf.h
@@ -54,7 +54,8 @@
 			 defined(CPU_ARM8) + defined(CPU_ARM9) +	\
 			 defined(CPU_ARM9E) +				\
 			 defined(CPU_ARM10) +				\
-			 defined(CPU_ARM11) +				\
+			 defined(CPU_ARM1136) +				\
+			 defined(CPU_ARM1176) +				\
 			 defined(CPU_SA110) + defined(CPU_SA1100) +	\
 			 defined(CPU_SA1110) +				\
 			 defined(CPU_IXP12X0) +				\
@@ -89,7 +90,7 @@
 #endif
 
 #if !defined(ARM_ARCH_6)
-#if defined(CPU_ARM11) || defined(CPU_MV_PJ4B)
+#if defined(CPU_ARM1136) || defined(CPU_ARM1176) || defined(CPU_MV_PJ4B)
 #define ARM_ARCH_6	1
 #else
 #define ARM_ARCH_6	0
@@ -149,7 +150,7 @@
 #define	ARM_MMU_GENERIC		0
 #endif
 
-#if defined(CPU_ARM11) || defined(CPU_MV_PJ4B)
+#if defined(CPU_ARM1136) || defined(CPU_ARM1176) || defined(CPU_MV_PJ4B)
 #define ARM_MMU_V6		1
 #else
 #define ARM_MMU_V6		0
diff --git a/sys/arm/include/cpufunc.h b/sys/arm/include/cpufunc.h
index 94b0ff6..07c8258 100644
--- a/sys/arm/include/cpufunc.h
+++ b/sys/arm/include/cpufunc.h
@@ -462,7 +462,8 @@ void	sheeva_l2cache_wb_range		(vm_offset_t, vm_size_t);
 void	sheeva_l2cache_wbinv_all	(void);
 #endif
 
-#if defined(CPU_ARM11) || defined(CPU_MV_PJ4B) || defined(CPU_CORTEXA)
+#if defined(CPU_ARM1136) || defined(CPU_ARM1176) || \
+	defined(CPU_MV_PJ4B) || defined(CPU_CORTEXA)
 void	arm11_setttb		(u_int);
 void	arm11_sleep		(int);
 
@@ -532,6 +533,21 @@ void	armadaxp_idcache_wbinv_all	(void);
 void 	cortexa_setup			(char *);
 #endif
 
+#if defined(CPU_ARM1136) || defined(CPU_ARM1176)
+void    arm11x6_setttb                  (u_int);
+void    arm11x6_idcache_wbinv_all       (void);
+void    arm11x6_dcache_wbinv_all        (void);
+void    arm11x6_icache_sync_all         (void);
+void    arm11x6_flush_prefetchbuf       (void);
+void    arm11x6_icache_sync_range       (vm_offset_t, vm_size_t);
+void    arm11x6_idcache_wbinv_range     (vm_offset_t, vm_size_t);
+void    arm11x6_setup                   (char *string);
+void    arm11x6_sleep                   (int);  /* no ref. for errata */
+#endif
+#if defined(CPU_ARM1136)
+void    arm1136_sleep_rev0              (int);  /* for errata 336501 */
+#endif
+
 #if defined(CPU_ARM9E) || defined (CPU_ARM10)
 void	armv5_ec_setttb(u_int);
 
diff --git a/sys/arm/include/intr.h b/sys/arm/include/intr.h
index ce681aa..45e36e9 100644
--- a/sys/arm/include/intr.h
+++ b/sys/arm/include/intr.h
@@ -52,7 +52,7 @@
 #define NIRQ		64
 #elif defined(CPU_CORTEXA)
 #define NIRQ		128
-#elif defined(CPU_ARM11)
+#elif defined(CPU_ARM1136) || defined(CPU_ARM1176)
 #define NIRQ		128
 #elif defined(SOC_MV_ARMADAXP)
 #define MAIN_IRQ_NUM		116
diff --git a/sys/arm/versatile/files.versatile b/sys/arm/versatile/files.versatile
index 0a00298..702a236 100644
--- a/sys/arm/versatile/files.versatile
+++ b/sys/arm/versatile/files.versatile
@@ -3,6 +3,7 @@
 arm/arm/bus_space_asm_generic.S			standard
 arm/arm/bus_space_generic.c                     standard
 arm/arm/cpufunc_asm_arm11.S                     standard
+arm/arm/cpufunc_asm_arm11x6.S			standard
 arm/arm/cpufunc_asm_armv5.S                     standard
 arm/arm/cpufunc_asm_armv6.S                     standard
 arm/arm/irq_dispatch.S                          standard