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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#include "platform.h"␊
17␊
18␊
19void loadPrebootRAMDisk_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6);␊
20void md0Ramdisk_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6);␊
21void processRAMDiskCommand_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6);␊
22void ramDiskLoadDrivers_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6);␊
23void newRamDisk_BVR_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6);␊
24void p_get_ramdisk_info_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6);␊
25void p_ramdiskReadBytes_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6);␊
26void is_Ram_Disk_Registred_Hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6);␊
27␊
28␊
29enum {␊
30␉kPseudoBIOSDevRAMDisk = 0x100,␊
31␉kPseudoBIOSDevBooter = 0x101␊
32};␊
33␊
34void loadPrebootRAMDisk_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊
35{␊
36␉loadPrebootRAMDisk();␉␊
37}␊
38␊
39void md0Ramdisk_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊
40{␊
41␉md0Ramdisk();␉␊
42}␊
43␊
44void processRAMDiskCommand_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊
45{␊
46␉char * argPtr = (char *)arg1;␊
47␉const char*bp = (const char *)arg2;␊
48␉processRAMDiskCommand(&argPtr, bp);␊
49}␊
50␊
51void ramDiskLoadDrivers_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊
52{␊
53␉char dirSpecExtra[1024];␊
54␉int step = *(int*)arg1;␉␊
55␉switch (step) {␊
56␉␉case 0:␊
57␉␉␉if (LoadExtraDrivers_p != NULL)␊
58␉␉␉{␊
59␉␉␉␉(*LoadExtraDrivers_p)(&FileLoadDrivers);␊
60␉␉␉}␊
61␉␉␉break;␊
62␉␉case 1:␊
63␉␉␉// First try a specfic OS version folder ie 10.5␊
64␉␉␉snprintf(dirSpecExtra, sizeof(dirSpecExtra),"rd(0,0)/Extra/%s/", (char*)((BVRef)(uint32_t)get_env(envgBootVolume))->OSVersion);␊
65␉␉␉if (FileLoadDrivers(dirSpecExtra, sizeof(dirSpecExtra),0) != 0)␊
66␉␉␉{␉␊
67␉␉␉␉// Next we'll try the base␊
68␉␉␉␉strlcpy(dirSpecExtra, "rd(0,0)/Extra/",sizeof(dirSpecExtra));␊
69␉␉␉␉FileLoadDrivers(dirSpecExtra,sizeof(dirSpecExtra), 0);␊
70␉␉␉}␊
71␉␉␉break;␊
72␉␉case 2:␊
73␉␉␉// First try a specfic OS version folder ie 10.5␊
74␉␉␉snprintf(dirSpecExtra, sizeof(dirSpecExtra),"bt(0,0)/Extra/%s/", (char*)((BVRef)(uint32_t)get_env(envgBootVolume))->OSVersion);␊
75␉␉␉if (FileLoadDrivers(dirSpecExtra,sizeof(dirSpecExtra), 0) != 0)␊
76␉␉␉{␉␊
77␉␉␉␉// Next we'll try the base␊
78␉␉␉␉strlcpy(dirSpecExtra, "bt(0,0)/Extra/",sizeof(dirSpecExtra));␊
79␉␉␉␉FileLoadDrivers(dirSpecExtra,sizeof(dirSpecExtra), 0);␊
80␉␉␉}␊
81␉␉␉break;␊
82␉␉default:␊
83␉␉␉break;␊
84␉}␉␊
85}␊
86␊
87void newRamDisk_BVR_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊
88{␊
89␉int biosdev = *(int*)arg1;␊
90␉BVRef *bvr1 = (BVRef*)arg2;␊
91␉if (biosdev == kPseudoBIOSDevRAMDisk)␊
92␉{␉␉␊
93␉␉if (gRAMDiskVolume)␊
94␉␉ *bvr1 = gRAMDiskVolume;␊
95␉} ␊
96␉else if (biosdev == kPseudoBIOSDevBooter)␊
97␉{␊
98␉␉if (gRAMDiskVolume != NULL && gRAMDiskBTAliased)␊
99␉␉␉*bvr1 = gRAMDiskVolume;␊
100␉}␊
101}␊
102␊
103void p_get_ramdisk_info_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊
104{␊
105␉int cc;␊
106␉int biosdev = *(int *)arg1;␊
107␉struct driveInfo *dip = (struct driveInfo *)arg2;␉␊
108␉int *ret = (int *)arg3;␊
109␉if(p_get_ramdisk_info != NULL)␊
110␉␉cc = (*p_get_ramdisk_info)(biosdev, dip);␊
111␉else␊
112␉␉cc = -1;␊
113␉if(cc < 0)␊
114␉{␊
115␉␉dip->valid = 0;␊
116␉␉*ret = -1;␊
117␉}␉␊
118}␊
119␊
120void p_ramdiskReadBytes_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊
121{␉␊
122␉int biosdev␉␉␉␉␉= *(int*)arg1;␊
123␉unsigned long long blkno␉= *(unsigned long long*)arg2;␊
124␉unsigned int byteoff␉␉= *(unsigned int*)arg3;␊
125␉unsigned int byteCount␉␉= *(unsigned int*)arg4;␊
126␉void * buffer␉␉␉␉= (void*)arg5;␊
127␉int *ret␉␉␉␉␉= (int*)arg6;␊
128␉␊
129␉if(p_ramdiskReadBytes != NULL && biosdev >= 0x100)␊
130 *ret = (*p_ramdiskReadBytes)(biosdev, blkno, byteoff, byteCount, buffer);␉␊
131}␊
132␊
133void is_Ram_Disk_Registred_Hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6){}␊
134␊
135void RamDiskLoader_start(void);␊
136void RamDiskLoader_start(void)␊
137{␊
138 register_hook_callback("loadPrebootRAMDisk", &loadPrebootRAMDisk_hook);␊
139 register_hook_callback("md0Ramdisk", &md0Ramdisk_hook);␊
140 register_hook_callback("processRAMDiskCommand", &processRAMDiskCommand_hook);␊
141 register_hook_callback("ramDiskLoadDrivers", &ramDiskLoadDrivers_hook);␉␊
142 register_hook_callback("newRamDisk_BVR", &newRamDisk_BVR_hook);␊
143 register_hook_callback("p_get_ramdisk_info", &p_get_ramdisk_info_hook);␊
144 register_hook_callback("p_ramdiskReadBytes", &p_ramdiskReadBytes_hook);␊
145 register_hook_callback("isRamDiskRegistred", &is_Ram_Disk_Registred_Hook);␊
146␊
147}

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