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

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