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Diffstat (limited to 'sys/arch/arm32/include/param.h')
| -rw-r--r-- | sys/arch/arm32/include/param.h | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/sys/arch/arm32/include/param.h b/sys/arch/arm32/include/param.h new file mode 100644 index 00000000000..5b737d6b53b --- /dev/null +++ b/sys/arch/arm32/include/param.h @@ -0,0 +1,184 @@ +/* $NetBSD: param.h,v 1.6 1996/03/14 23:11:27 mark Exp $ */ + +/* + * Copyright (c) 1994,1995 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_PARAM_H_ +#define _ARM32_PARAM_H_ + +#ifdef _KERNEL +# include <machine/cpu.h> +#endif + +/* + * Machine dependent constants for ARM6+ processors + */ +/*#define ovbcopy bcopy */ /* XXX should probably have long gone by now */ + +#define _MACHINE arm32 +#define MACHINE "arm32" +#define _MACHINE_ARCH arm32 +#define MACHINE_ARCH "arm32" +#define MID_MACHINE MID_ARM6 + +/* + * Round p (pointer or byte index) up to a correctly-aligned value + * for all data types (int, long, ...). The result is u_int and + * must be cast to any desired pointer type. + */ +#define ALIGNBYTES (sizeof(int) - 1) +#define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES) + +#define PGSHIFT 12 /* LOG2(NBPG) */ +#define NBPG (1 << PGSHIFT) /* bytes/page */ +#define PGOFSET (NBPG-1) /* byte offset into page */ +#define NPTEPG (NBPG/(sizeof (pt_entry_t))) + + +#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ +#define DEV_BSIZE (1 << DEV_BSHIFT) +#define BLKDEV_IOSIZE 2048 +#define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ + +#define CLSIZELOG2 0 +#define CLSIZE (1 << CLSIZELOG2) + +/* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ +#define SSIZE 1 /* initial stack size/NBPG */ +#define SINCR 1 /* increment of stack/NBPG */ +#define UPAGES 2 /* pages of u-area */ +#define USPACE (UPAGES * NBPG) /* total size of u-area */ + +/* + * Constants related to network buffer management. + * MCLBYTES must be no larger than CLBYTES (the software page size), and, + * on machines that exchange pages of input or output buffers with mbuf + * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple + * of the hardware page size. + */ +#define MSIZE 128 /* size of an mbuf */ +#define MCLSHIFT 11 /* convert bytes to m_buf clusters */ +#define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ +#define MCLOFSET (MCLBYTES - 1) /* offset within a m_buf cluster */ + +#ifndef NMBCLUSTERS +#ifdef GATEWAY +#define NMBCLUSTERS 512 /* map size, max cluster allocation */ +#else +#define NMBCLUSTERS 256 /* map size, max cluster allocation */ +#endif +#endif + +/* + * Size of kernel malloc arena in CLBYTES-sized logical pages + */ +#ifndef NKMEMCLUSTERS +#define NKMEMCLUSTERS (6 * 1024 * 1024 / CLBYTES) +#endif + +/* pages ("clicks") (4096 bytes) to disk blocks */ +#define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT)) +#define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT)) +/*#define dtob(x) ((x) << DEV_BSHIFT)*/ + +#define ctob(x) ((x) << PGSHIFT) + +/* bytes to pages */ +#define btoc(x) (((unsigned)(x) + PGOFSET) >> PGSHIFT) + +#define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \ + ((unsigned)(bytes) >> DEV_BSHIFT) +#define dbtob(db) /* calculates (db * DEV_BSIZE) */ \ + ((unsigned)(db) << DEV_BSHIFT) + +/* + * Map a ``block device block'' to a file system block. + * This should be device dependent, and should use the bsize + * field from the disk label. + * For now though just use DEV_BSIZE. + */ +#define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE / DEV_BSIZE)) + +/* Define various base addresses */ + +#define KERNEL_BASE 0xf0000000 +#define KERNEL_VM_BASE 0xf1000000 +#define PAGE_DIRS_BASE 0xf3000000 +#define ALT_PAGE_TBLS_BASE 0xf3c00000 +#define CURRENT_PAGEDIR_BASE 0xeffd4000 +#define PROCESS_PAGE_TBLS_BASE 0xefc00000 + +#define KERNBASE KERNEL_BASE + +/* Constants used to divide the USPACE area */ + +/* + * The USPACE area contains : + * 1. the user structure for the process + * 2. the fp context for FP emulation + * 3. the kernel (svc) stack + * 4. the undefined instruction stack + * + * The layout of the area looks like this + * + * | user area | FP context | undefined stack | kernel stack | + * + * The size of the user area is known. + * The size of the FP context is variable depending of the FP emulator + * in use and whether there is hardware FP support. However we can put + * an upper limit on it. + * The undefined stack needs to be at least 512 bytes. This is a requirement + * if the FP emulators + * The kernel stack should be at least 4K is size. + * + * The stack top addresses are used to set the stack pointers. The stack bottom + * addresses at the addresses monitored by the diagnostic code for stack overflows + * + */ + +#define FPCONTEXTSIZE (0x100) +#define USPACE_SVC_STACK_TOP (USPACE) +#define USPACE_SVC_STACK_BOTTOM (USPACE_SVC_STACK_TOP - 0x1000) +#define USPACE_UNDEF_STACK_TOP (USPACE_SVC_STACK_BOTTOM - 0x10) +#define USPACE_UNDEF_STACK_BOTTOM (sizeof(struct user) + FPCONTEXTSIZE + 10) + +#define arm_byte_to_page(x) (x >> PGSHIFT) +#define arm_page_to_byte(x) (x << PGSHIFT) + +#ifdef _KERNEL +#ifndef _LOCORE +void delay __P((unsigned)); +#define DELAY(x) delay(x) +#endif +#endif + +#endif /* _ARM_PARAM_H_ */ |