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1/*␊
2 * RamDiskLoader.c␊
3 * Chameleon␊
4 *␊
5 * Created by cparm on 05/12/10. <armelcadetpetit@gmail.com>␊
6 * Copyright 2010. All rights reserved.␊
7 *␊
8 */␊
9␊
10#include "boot.h"␊
11#include "libsaio.h"␊
12#include "bootstruct.h"␊
13#include "modules.h"␊
14#include "ramdisk.h"␊
15#include "drivers.h"␊
16#include "disk.h"␊
17␊
18␊
19␊
20␊
21enum {␊
22␉kPseudoBIOSDevRAMDisk = 0x100,␊
23␉kPseudoBIOSDevBooter = 0x101␊
24};␊
25␊
26void loadPrebootRAMDisk_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊
27{␊
28␉loadPrebootRAMDisk();␉␊
29}␊
30␊
31void md0Ramdisk_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊
32{␊
33␉md0Ramdisk();␉␊
34}␊
35␊
36void processRAMDiskCommand_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊
37{␊
38␉char * argPtr = (char *)arg1;␊
39␉const char*bp = (const char *)arg2;␊
40␉processRAMDiskCommand(&argPtr, bp);␊
41}␊
42␊
43void ramDiskLoadDrivers_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊
44{␊
45␉char dirSpecExtra[1024];␊
46␉int step = *(int*)arg1;␉␊
47␉switch (step) {␊
48␉␉case 0:␊
49␉␉␉if (LoadExtraDrivers_p != NULL)␊
50␉␉␉{␊
51␉␉␉␉(*LoadExtraDrivers_p)(&FileLoadDrivers);␊
52␉␉␉}␊
53␉␉␉break;␊
54␉␉case 1:␊
55␉␉␉// First try a specfic OS version folder ie 10.5␊
56␉␉␉sprintf(dirSpecExtra, "rd(0,0)/Extra/%s/", &gMacOSVersion);␊
57␉␉␉if (FileLoadDrivers(dirSpecExtra, 0) != 0)␊
58␉␉␉{␉␊
59␉␉␉␉// Next we'll try the base␊
60␉␉␉␉strcpy(dirSpecExtra, "rd(0,0)/Extra/");␊
61␉␉␉␉FileLoadDrivers(dirSpecExtra, 0);␊
62␉␉␉}␊
63␉␉␉break;␊
64␉␉case 2:␊
65␉␉␉// First try a specfic OS version folder ie 10.5␊
66␉␉␉sprintf(dirSpecExtra, "bt(0,0)/Extra/%s/", &gMacOSVersion);␊
67␉␉␉if (FileLoadDrivers(dirSpecExtra, 0) != 0)␊
68␉␉␉{␉␊
69␉␉␉␉// Next we'll try the base␊
70␉␉␉␉strcpy(dirSpecExtra, "bt(0,0)/Extra/");␊
71␉␉␉␉FileLoadDrivers(dirSpecExtra, 0);␊
72␉␉␉}␊
73␉␉␉break;␊
74␉␉default:␊
75␉␉␉break;␊
76␉}␉␊
77}␊
78␊
79void newRamDisk_BVR_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊
80{␊
81␉int biosdev = *(int*)arg1;␊
82␉BVRef *bvr1 = (BVRef*)arg2;␊
83␉if (biosdev == kPseudoBIOSDevRAMDisk)␊
84␉{␉␉␊
85␉␉if (gRAMDiskVolume)␊
86␉␉ *bvr1 = gRAMDiskVolume;␊
87␉} ␊
88␉else if (biosdev == kPseudoBIOSDevBooter)␊
89␉{␊
90␉␉if (gRAMDiskVolume != NULL && gRAMDiskBTAliased)␊
91␉␉␉*bvr1 = gRAMDiskVolume;␊
92␉}␊
93}␊
94␊
95void p_get_ramdisk_info_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊
96{␊
97␉int cc;␊
98␉int biosdev = *(int *)arg1;␊
99␉struct driveInfo *dip = (struct driveInfo *)arg2;␉␊
100␉int *ret = (int *)arg3;␊
101␉if(p_get_ramdisk_info != NULL)␊
102␉␉cc = (*p_get_ramdisk_info)(biosdev, dip);␊
103␉else␊
104␉␉cc = -1;␊
105␉if(cc < 0)␊
106␉{␊
107␉␉dip->valid = 0;␊
108␉␉*ret = -1;␊
109␉}␉␊
110}␊
111␊
112void p_ramdiskReadBytes_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊
113{␉␊
114␉int biosdev␉␉␉␉␉= *(int*)arg1;␊
115␉unsigned long long blkno␉= *(unsigned long long*)arg2;␊
116␉unsigned int byteoff␉␉= *(unsigned int*)arg3;␊
117␉unsigned int byteCount␉␉= *(unsigned int*)arg4;␊
118␉void * buffer␉␉␉␉= (void*)arg5;␊
119␉int *ret␉␉␉␉␉= (int*)arg6;␊
120␉␊
121␉if(p_ramdiskReadBytes != NULL && biosdev >= 0x100)␊
122 *ret = (*p_ramdiskReadBytes)(biosdev, blkno, byteoff, byteCount, buffer);␉␊
123}␊
124␊
125void RamDiskLoader_start()␊
126{␊
127␉register_hook_callback("loadPrebootRAMDisk", &loadPrebootRAMDisk_hook);␊
128␉register_hook_callback("md0Ramdisk", &md0Ramdisk_hook);␊
129␉register_hook_callback("processRAMDiskCommand", &processRAMDiskCommand_hook);␊
130␉register_hook_callback("ramDiskLoadDrivers", &ramDiskLoadDrivers_hook);␉␊
131␉register_hook_callback("newRamDisk_BVR", &newRamDisk_BVR_hook);␊
132␉register_hook_callback("p_get_ramdisk_info", &p_get_ramdisk_info_hook);␊
133␉register_hook_callback("p_ramdiskReadBytes", &p_ramdiskReadBytes_hook);␊
134␊
135}

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