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1/*␊
2 * RamDiskLoader.c␊
3 * Chameleon␊
4 *␊
5 * Created by cparm on 05/12/10. <armelcadetpetit@gmail.com>␊
6 * Copyright 2010,2012. All rights reserved.␊
7 *␊
8 */␊
9␊
10#include "libsaio.h"␊
11#include "bootstruct.h"␊
12#include "modules.h"␊
13#include "ramdisk.h"␊
14#include "drivers.h"␊
15#include "disk.h"␊
16␊
17␊
18void loadPrebootRAMDisk_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6);␊
19void md0Ramdisk_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6);␊
20void processRAMDiskCommand_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6);␊
21void ramDiskLoadDrivers_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6);␊
22void newRamDisk_BVR_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6);␊
23void p_get_ramdisk_info_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6);␊
24void p_ramdiskReadBytes_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6);␊
25void is_Ram_Disk_Registred_Hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6);␊
26␊
27␊
28enum {␊
29␉kPseudoBIOSDevRAMDisk = 0x100,␊
30␉kPseudoBIOSDevBooter = 0x101␊
31};␊
32␊
33void loadPrebootRAMDisk_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊
34{␊
35␉loadPrebootRAMDisk();␉␊
36}␊
37␊
38void md0Ramdisk_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊
39{␊
40␉md0Ramdisk();␉␊
41}␊
42␊
43void processRAMDiskCommand_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊
44{␊
45␉char * argPtr = (char *)arg1;␊
46␉const char*bp = (const char *)arg2;␊
47␉processRAMDiskCommand(&argPtr, bp);␊
48}␊
49␊
50void ramDiskLoadDrivers_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊
51{␊
52␉char dirSpecExtra[1024];␊
53␉int step = *(int*)arg1;␉␊
54␉switch (step) {␊
55␉␉case 0:␊
56␉␉␉if (LoadExtraDrivers_p != NULL)␊
57␉␉␉{␊
58␉␉␉␉(*LoadExtraDrivers_p)(&FileLoadDrivers);␊
59␉␉␉}␊
60␉␉␉break;␊
61␉␉case 1:␊
62␉␉␉// First try a specfic OS version folder ie 10.5␊
63␉␉␉sprintf(dirSpecExtra, "rd(0,0)/Extra/%s/", (char*)gBootVolume->OSVersion);␊
64␉␉␉if (FileLoadDrivers(dirSpecExtra, 0) != 0)␊
65␉␉␉{␉␊
66␉␉␉␉// Next we'll try the base␊
67␉␉␉␉strcpy(dirSpecExtra, "rd(0,0)/Extra/");␊
68␉␉␉␉FileLoadDrivers(dirSpecExtra, 0);␊
69␉␉␉}␊
70␉␉␉break;␊
71␉␉case 2:␊
72␉␉␉// First try a specfic OS version folder ie 10.5␊
73␉␉␉sprintf(dirSpecExtra, "bt(0,0)/Extra/%s/", (char*)gBootVolume->OSVersion);␊
74␉␉␉if (FileLoadDrivers(dirSpecExtra, 0) != 0)␊
75␉␉␉{␉␊
76␉␉␉␉// Next we'll try the base␊
77␉␉␉␉strcpy(dirSpecExtra, "bt(0,0)/Extra/");␊
78␉␉␉␉FileLoadDrivers(dirSpecExtra, 0);␊
79␉␉␉}␊
80␉␉␉break;␊
81␉␉default:␊
82␉␉␉break;␊
83␉}␉␊
84}␊
85␊
86void newRamDisk_BVR_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊
87{␊
88␉int biosdev = *(int*)arg1;␊
89␉BVRef *bvr1 = (BVRef*)arg2;␊
90␉if (biosdev == kPseudoBIOSDevRAMDisk)␊
91␉{␉␉␊
92␉␉if (gRAMDiskVolume)␊
93␉␉ *bvr1 = gRAMDiskVolume;␊
94␉} ␊
95␉else if (biosdev == kPseudoBIOSDevBooter)␊
96␉{␊
97␉␉if (gRAMDiskVolume != NULL && gRAMDiskBTAliased)␊
98␉␉␉*bvr1 = gRAMDiskVolume;␊
99␉}␊
100}␊
101␊
102void p_get_ramdisk_info_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊
103{␊
104␉int cc;␊
105␉int biosdev = *(int *)arg1;␊
106␉struct driveInfo *dip = (struct driveInfo *)arg2;␉␊
107␉int *ret = (int *)arg3;␊
108␉if(p_get_ramdisk_info != NULL)␊
109␉␉cc = (*p_get_ramdisk_info)(biosdev, dip);␊
110␉else␊
111␉␉cc = -1;␊
112␉if(cc < 0)␊
113␉{␊
114␉␉dip->valid = 0;␊
115␉␉*ret = -1;␊
116␉}␉␊
117}␊
118␊
119void p_ramdiskReadBytes_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊
120{␉␊
121␉int biosdev␉␉␉␉␉= *(int*)arg1;␊
122␉unsigned long long blkno␉= *(unsigned long long*)arg2;␊
123␉unsigned int byteoff␉␉= *(unsigned int*)arg3;␊
124␉unsigned int byteCount␉␉= *(unsigned int*)arg4;␊
125␉void * buffer␉␉␉␉= (void*)arg5;␊
126␉int *ret␉␉␉␉␉= (int*)arg6;␊
127␉␊
128␉if(p_ramdiskReadBytes != NULL && biosdev >= 0x100)␊
129 *ret = (*p_ramdiskReadBytes)(biosdev, blkno, byteoff, byteCount, buffer);␉␊
130}␊
131␊
132void is_Ram_Disk_Registred_Hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6){}␊
133␊
134void RamDiskLoader_start(void);␊
135void RamDiskLoader_start(void)␊
136{␊
137 register_hook_callback("loadPrebootRAMDisk", &loadPrebootRAMDisk_hook);␊
138 register_hook_callback("md0Ramdisk", &md0Ramdisk_hook);␊
139 register_hook_callback("processRAMDiskCommand", &processRAMDiskCommand_hook);␊
140 register_hook_callback("ramDiskLoadDrivers", &ramDiskLoadDrivers_hook);␉␊
141 register_hook_callback("newRamDisk_BVR", &newRamDisk_BVR_hook);␊
142 register_hook_callback("p_get_ramdisk_info", &p_get_ramdisk_info_hook);␊
143 register_hook_callback("p_ramdiskReadBytes", &p_ramdiskReadBytes_hook);␊
144 register_hook_callback("isRamDiskRegistred", &is_Ram_Disk_Registred_Hook);␊
145␊
146}

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