Preliminary bits for SuperH-based ports, based on NetBSD/sh3 codebase with

minor changes.

1 files changed, 154 insertions, 0 deletions

diff --git a/sys/arch/sh/include/mmu_sh4.h b/sys/arch/sh/include/mmu_sh4.h
new file mode 100644
index 00000000000..c25a48c4748
--- /dev/null
+++ b/sys/arch/sh/include/mmu_sh4.h
@@ -0,0 +1,154 @@
+/*	$OpenBSD: mmu_sh4.h,v 1.1 2006/10/06 21:02:55 miod Exp $	*/
+/*	$NetBSD: mmu_sh4.h,v 1.6 2006/03/04 01:55:03 uwe Exp $	*/
+
+/*-
+ * Copyright (c) 2002 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by UCHIYAMA Yasushi.
+ *
+ * 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 the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * 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.
+ */
+
+#ifndef _SH_MMU_SH4_H_
+#define	_SH_MMU_SH4_H_
+#include <sh/devreg.h>
+
+/* ITLB 4-entry full-associative UTLB 64-entry full-associative */
+#define	SH4_PTEH			0xff000000
+#define	  SH4_PTEH_VPN_MASK		  0xfffffc00
+#define	  SH4_PTEH_ASID_MASK		  0x000000ff
+#define	SH4_PTEL			0xff000004
+#define	  SH4_PTEL_WT			  0x00000001
+#define	  SH4_PTEL_SH			  0x00000002
+#define	  SH4_PTEL_D			  0x00000004
+#define	  SH4_PTEL_C			  0x00000008
+#define	  SH4_PTEL_PR_SHIFT		  5
+#define	  SH4_PTEL_PR_MASK		  0x00000060	/* [5:6] */
+#define	  SH4_PTEL_SZ_MASK		  0x00000090	/* [4][7] */
+#define	    SH4_PTEL_SZ_1K		  0x00000000
+#define	    SH4_PTEL_SZ_4K		  0x00000010
+#define	    SH4_PTEL_SZ_64K		  0x00000080
+#define	    SH4_PTEL_SZ_1M		  0x00000090
+#define	  SH4_PTEL_V			  0x00000100
+#define	  SH4_PTEL_HWBITS		  0x1ffff1ff /* [28:12]PFN [8:0]attr. */
+
+#define	SH4_PTEA			0xff000034
+#define	  SH4_PTEA_SA_MASK		  0x00000007
+#define	  SH4_PTEA_SA_TC		  0x00000008
+#define	SH4_TTB				0xff000008
+#define	SH4_TEA				0xff00000c
+#define	SH4_MMUCR			0xff000010
+#define	  SH4_MMUCR_AT			  0x00000001
+#define	  SH4_MMUCR_TI			  0x00000004
+#define	  SH4_MMUCR_SV			  0x00000100
+#define	  SH4_MMUCR_SQMD		  0x00000200
+#define	  SH4_MMUCR_URC_SHIFT		  10
+#define	  SH4_MMUCR_URC_MASK		  0x0000fc00	/* [10:15] */
+#define	  SH4_MMUCR_URB_SHIFT		  18
+#define	  SH4_MMUCR_URB_MASK		  0x00fc0000	/* [18:23] */
+#define	  SH4_MMUCR_LRUI_SHIFT		  26
+#define	  SH4_MMUCR_LRUT_MASK		  0xfc000000	/* [26:31] */
+
+#define	  SH4_MMUCR_MASK	(SH4_MMUCR_LRUT_MASK | SH4_MMUCR_URB_MASK | \
+    SH4_MMUCR_URC_MASK | SH4_MMUCR_SQMD | SH4_MMUCR_SV | SH4_MMUCR_AT)
+/*
+ * memory-mapped TLB
+ *	must be access from P2-area program.
+ *	branch to the other area must be maed at least 8 instruction
+ *	after access.
+ */
+#define	SH4_ITLB_ENTRY		4
+#define	SH4_UTLB_ENTRY		64
+
+/* ITLB */
+#define	SH4_ITLB_AA			0xf2000000
+/* address specification (common for address and data array(0,1)) */
+#define	  SH4_ITLB_E_SHIFT		  8
+#define	  SH4_ITLB_E_MASK		  0x00000300	/* [9:8] */
+/* data specification */
+/* address-array */
+#define	  SH4_ITLB_AA_ASID_MASK		  0x000000ff	/* [7:0] */
+#define	  SH4_ITLB_AA_V			  0x00000100
+#define	  SH4_ITLB_AA_VPN_SHIFT		  10
+#define	  SH4_ITLB_AA_VPN_MASK		  0xfffffc00	/* [31:10] */
+/* data-array 1 */
+#define	SH4_ITLB_DA1			0xf3000000
+#define	  SH4_ITLB_DA1_SH		  0x00000002
+#define	  SH4_ITLB_DA1_C		  0x00000008
+#define	  SH4_ITLB_DA1_SZ_MASK		  0x00000090	/* [7][4] */
+#define	    SH4_ITLB_DA1_SZ_1K		  0x00000000
+#define	    SH4_ITLB_DA1_SZ_4K		  0x00000010
+#define	    SH4_ITLB_DA1_SZ_64K		  0x00000080
+#define	    SH4_ITLB_DA1_SZ_1M		  0x00000090
+#define	  SH4_ITLB_DA1_PR		  0x00000040
+#define	  SH4_ITLB_DA1_V		  0x00000100
+#define	  SH4_ITLB_DA1_PPN_SHIFT	  11
+#define	  SH4_ITLB_DA1_PPN_MASK		  0x1ffffc00	/* [28:10] */
+/* data-array 2 */
+#define	SH4_ITLB_DA2			0xf3800000
+#define	  SH4_ITLB_DA2_SA_MASK		  0x00000003
+#define	  SH4_ITLB_DA2_TC		  0x00000004
+
+/* UTLB */
+#define	SH4_UTLB_AA			0xf6000000
+/* address specification (common for address and data array(0,1)) */
+#define	  SH4_UTLB_E_SHIFT		  8
+#define	  SH4_UTLB_E_MASK		  0x00003f00
+#define	  SH4_UTLB_A			  0x00000080
+/* data specification */
+/* address-array */
+#define	  SH4_UTLB_AA_VPN_MASK		  0xfffffc00	/* [31:10] */
+#define	  SH4_UTLB_AA_D			  0x00000200
+#define	  SH4_UTLB_AA_V			  0x00000100
+#define	  SH4_UTLB_AA_ASID_MASK		  0x000000ff	/* [7:0] */
+/* data-array 1 */
+#define	SH4_UTLB_DA1			0xf7000000
+#define	  SH4_UTLB_DA1_WT		  0x00000001
+#define	  SH4_UTLB_DA1_SH		  0x00000002
+#define	  SH4_UTLB_DA1_D		  0x00000004
+#define	  SH4_UTLB_DA1_C		  0x00000008
+#define	  SH4_UTLB_DA1_SZ_MASK		  0x00000090	/* [7][4] */
+#define	    SH4_UTLB_DA1_SZ_1K		  0x00000000
+#define	    SH4_UTLB_DA1_SZ_4K		  0x00000010
+#define	    SH4_UTLB_DA1_SZ_64K		  0x00000080
+#define	    SH4_UTLB_DA1_SZ_1M		  0x00000090
+#define	  SH4_UTLB_DA1_PR_SHIFT		  5
+#define	  SH4_UTLB_DA1_PR_MASK		  0x00000060
+#define	  SH4_UTLB_DA1_V		  0x00000100
+#define	  SH4_UTLB_DA1_PPN_SHIFT	  11
+#define	  SH4_UTLB_DA1_PPN_MASK		  0x1ffffc00	/* [28:10] */
+/* data-array 2 */
+#define	SH4_UTLB_DA2			0xf7800000
+#define	  SH4_UTLB_DA2_SA_MASK		  0x00000003
+#define	  SH4_UTLB_DA2_TC		  0x00000004
+
+#define	SH4_TLB_DISABLE	*(volatile uint32_t *)SH4_MMUCR = SH4_MMUCR_TI
+#endif /* !_SH_MMU_SH4_H_ */