Initial import of arm32 port

1 files changed, 107 insertions, 0 deletions

diff --git a/sys/arch/arm32/include/pte.h b/sys/arch/arm32/include/pte.h
new file mode 100644
index 00000000000..73a087399ec
--- /dev/null
+++ b/sys/arch/arm32/include/pte.h
@@ -0,0 +1,107 @@
+/* $NetBSD: pte.h,v 1.3 1996/03/14 23:11:36 mark Exp $ */
+
+/*
+ * Copyright (c) 1994 Mark Brinicombe.
+ * 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 the RiscBSD team.
+ * 4. The name "RiscBSD" nor the name of the author may be used to
+ *    endorse or promote products derived from this software without specific
+ *    prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY RISCBSD ``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 RISCBSD 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 _ARM32_PTE_H_
+#define _ARM32_PTE_H_
+
+#define PDSHIFT	20			/* LOG2(NBPDR) */
+#define NBPD		(1 << PDSHIFT)	/* bytes/page dir */
+/*# define PDOFSET	(NBPD-1)*/	/* byte offset into page dir */
+#define NPTEPD		(NBPD / NBPG)
+
+#ifndef _LOCORE
+typedef	int	pd_entry_t;		/* page directory entry */
+typedef	int	pt_entry_t;		/* page table entry */
+#endif
+
+#define PD_MASK	0xfff00000		/* page directory address bits */
+#define PT_MASK	0x000ff000		/* page table address bits */
+
+#define PG_FRAME	0xfffff000
+
+/* The PT_SIZE definition is misleading... A page table is only 0x400
+ * bytes long. But since VM mapping can only be done to 0x1000 a single
+ * 1KB blocks cannot be steered to a va by itself. Therefore the
+ * pages tables are allocated in blocks of 4. i.e. if a 1 KB block
+ * was allocated for a PT then the other 3KB would also get mapped
+ * whenever the 1KB was mapped.
+ */
+ 
+#define PT_SIZE		0x1000
+#define PD_SIZE		0x4000
+
+#define AP_KR		0x00
+#define AP_KRW		0x01
+#define AP_KRWUR	0x02
+#define AP_KRWURW	0x03
+
+#define AP_W           0x01
+#define AP_U           0x02
+
+#define PT_B		0x04	/* Phys - Buffered (write) */
+#define PT_C		0x08	/* Phys - Cacheable */
+#define PT_U		0x10	/* Phys - Updateable */
+
+#define PT_M		0x01	/* Virt - Modified */
+#define PT_H		0x02	/* Virt - Handled (Used) */
+#define PT_W		0x40	/* Virt - Wired */
+#define PT_Wr		0x10	/* Virt / Phys Write */
+#define PT_Us		0x20	/* Virt / Phys User */
+
+#define PT_AP(x)	((x << 10) | (x << 8) | (x << 6)  | (x << 4))
+
+#define AP_SECTION_SHIFT	10
+
+#define L1_PAGE		0x01
+#define L1_SECTION	0x02
+#define L2_LPAGE	0x01
+#define L2_SPAGE	0x02
+#define L2_MASK		0x03
+#define L2_INVAL	0x00
+
+#define L2_PTE(p, a) ((p) | PT_AP(a) | L2_SPAGE | PT_C | PT_B)
+#define L2_PTE_NC(p, a) ((p) | PT_AP(a) | L2_SPAGE | PT_B)
+
+#define L1_PTE(p) ((p) | 0x00 | PT_U | L1_PAGE)
+
+#define L1_SEC(p) ((p) | (AP_KRW << AP_SECTION_SHIFT) | PT_U | L1_SECTION)
+
+#define DOMAIN_FAULT		0x00
+#define DOMAIN_CLIENT		0x01
+#define DOMAIN_RESERVED		0x02
+#define DOMAIN_MANAGER		0x03
+
+#endif
+
+/* End of pte.h */