Chameleon

Chameleon Svn Source Tree

Root/trunk/i386/libsaio/memory.c

1/*
2 * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * Portions Copyright (c) 2003 Apple Computer, Inc. All Rights
7 * Reserved. This file contains Original Code and/or Modifications of
8 * Original Code as defined in and that are subject to the Apple Public
9 * Source License Version 2.0 (the "License"). You may not use this file
10 * except in compliance with the License. Please obtain a copy of the
11 * License at http://www.apple.com/publicsource and read it before using
12 * this file.
13 *
14 * The Original Code and all software distributed under the License are
15 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT. Please see the
19 * License for the specific language governing rights and limitations
20 * under the License.
21 *
22 * @APPLE_LICENSE_HEADER_END@
23 */
24
25#include "sl.h"
26#include "saio_internal.h"
27#include "bootstruct.h"
28#include "device_tree.h"
29
30static long gImageLastKernelAddr;
31
32#define kPageSize 4096
33#define RoundPage(x) ((((unsigned)(x)) + kPageSize - 1) & ~(kPageSize - 1))
34
35
36long
37AllocateMemoryRange(char * rangeName, long start, long length, long type)
38{
39 char *nameBuf;
40 uint32_t *buffer;
41
42 nameBuf = malloc(strlen(rangeName) + 1);
43 if (nameBuf == 0) return -1;
44 strcpy(nameBuf, rangeName);
45
46 buffer = malloc(2 * sizeof(uint32_t));
47 if (buffer == 0) return -1;
48
49 buffer[0] = start;
50 buffer[1] = length;
51
52 DT__AddProperty(gMemoryMapNode, nameBuf, 2 * sizeof(uint32_t), (char *)buffer);
53
54 return 0;
55}
56
57#if 0
58long
59AllocateMemoryRange(char * rangeName, long start, long length, long type)
60{
61 if ( bootArgs->numBootDrivers < NDRIVERS )
62 {
63 int num = bootArgs->numBootDrivers;
64
65 bootArgs->driverConfig[num].address = start;
66 bootArgs->driverConfig[num].size = length;
67 bootArgs->driverConfig[num].type = type;
68 bootArgs->numBootDrivers++;
69 }
70 else
71 {
72 stop( "AllocateMemoryRange error" );
73 }
74 return 0;
75}
76#endif
77
78long
79AllocateKernelMemory( long inSize )
80{
81 long addr;
82
83 if (gImageLastKernelAddr == 0) {
84 gImageLastKernelAddr = RoundPage( bootArgs->kaddr +
85 bootArgs->ksize );
86 }
87 addr = gImageLastKernelAddr;
88 gImageLastKernelAddr += RoundPage(inSize);
89
90 if ( gImageLastKernelAddr >= (KERNEL_ADDR + KERNEL_LEN) ) {
91 stop ("AllocateKernelMemory error");
92 }
93
94 bootArgs->ksize = gImageLastKernelAddr - bootArgs->kaddr;
95
96 return addr;
97}
98

Archive Download this file

Revision: 1