ofw_copy.c revision 124140
1/*- 2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: head/sys/boot/ofw/libofw/ofw_copy.c 124140 2004-01-04 23:30:47Z obrien $"); 29 30/* 31 * MD primitives supporting placement of module data 32 * 33 * XXX should check load address/size against memory top. 34 */ 35#include <stand.h> 36 37#include "libofw.h" 38 39#define READIN_BUF (4 * 1024) 40#define PAGE_SIZE 0x1000 41#define PAGE_MASK 0x0fff 42 43#define roundup(x, y) ((((x)+((y)-1))/(y))*(y)) 44 45ssize_t 46ofw_copyin(const void *src, vm_offset_t dest, const size_t len) 47{ 48 void *destp, *addr; 49 size_t dlen; 50 51 destp = (void *)(dest & ~PAGE_MASK); 52 dlen = roundup(len, PAGE_SIZE); 53 54 if (OF_call_method("claim", memory, 3, 1, destp, dlen, 0, &addr) 55 == -1) { 56 printf("ofw_copyin: physical claim failed\n"); 57 return (0); 58 } 59 60 if (OF_call_method("claim", mmu, 3, 1, destp, dlen, 0, &addr) == -1) { 61 printf("ofw_copyin: virtual claim failed\n"); 62 return (0); 63 } 64 65 if (OF_call_method("map", mmu, 4, 0, destp, destp, dlen, 0) == -1) { 66 printf("ofw_copyin: map failed\n"); 67 return (0); 68 } 69 70 bcopy(src, (void *)dest, len); 71 return(len); 72} 73 74ssize_t 75ofw_copyout(const vm_offset_t src, void *dest, const size_t len) 76{ 77 bcopy((void *)src, dest, len); 78 return(len); 79} 80 81ssize_t 82ofw_readin(const int fd, vm_offset_t dest, const size_t len) 83{ 84 void *buf; 85 size_t resid, chunk, get; 86 ssize_t got; 87 vm_offset_t p; 88 89 p = dest; 90 91 chunk = min(READIN_BUF, len); 92 buf = malloc(chunk); 93 if (buf == NULL) { 94 printf("ofw_readin: buf malloc failed\n"); 95 return(0); 96 } 97 98 for (resid = len; resid > 0; resid -= got, p += got) { 99 get = min(chunk, resid); 100 got = read(fd, buf, get); 101 102 if (got <= 0) { 103 if (got < 0) 104 printf("ofw_readin: read failed\n"); 105 break; 106 } 107 108 ofw_copyin(buf, p, got); 109 } 110 111 free(buf); 112 return(len - resid); 113} 114