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Root/branches/iFabio/i386/boot2/ramdisk.c

Source at commit 214 created 13 years 5 months ago.
By ifabio, update to chameleon trunk 630, and now the pakage folder is the same as blackosx branch, also add Icon "building" into buildpkg script, and add mint theme info into the English localizable.strings.
1/*␊
2 * Supplemental ramdisk functions for the multiboot ramdisk driver.␊
3 * Copyright 2009 Tamas Kosarszky. All rights reserved.␊
4 *␊
5 */␊
6␊
7#include "boot.h"␊
8#include "bootstruct.h"␊
9#include "multiboot.h"␊
10#include "ramdisk.h"␊
11␊
12struct multiboot_info * gRAMDiskMI = NULL;␊
13␊
14// gRAMDiskVolume holds the bvr for the mounted ramdisk image.␊
15BVRef gRAMDiskVolume = NULL;␊
16bool gRAMDiskBTAliased = false;␊
17char gRAMDiskFile[512];␊
18␊
19// Notify OS X that a ramdisk has been setup. XNU with attach this to /dev/md0␊
20void md0Ramdisk()␊
21{␊
22␉RAMDiskParam ramdiskPtr;␊
23␉char filename[512];␊
24␉const char* override_filename = 0;␊
25␉int fh = -1;␊
26␉int len;␊
27␉␊
28␉if(getValueForKey(kMD0Image, &override_filename, &len, ␊
29␉␉␉␉ &bootInfo->bootConfig))␊
30␉{␊
31␉␉// Use user specified md0 file␊
32␉␉sprintf(filename, "%s", override_filename);␊
33␉␉fh = open(filename, 0);␊
34␉␉␊
35␉␉if(fh < 0)␊
36␉␉{␊
37␉␉␉sprintf(filename, "rd(0,0)/Extra/%s", override_filename);␊
38␉␉␉fh = open(filename, 0);␊
39␊
40␉␉␉if(fh < 0)␊
41␉␉␉{␊
42␉␉␉␉sprintf(filename, "/Extra/%s", override_filename);␊
43␉␉␉␉fh = open(filename, 0);␊
44␉␉␉}␊
45␉␉}␉␉␊
46␉}␊
47␊
48␉if(fh < 0)␊
49␉{␊
50␉␉sprintf(filename, "rd(0,0)/Extra/Postboot.img");␊
51␉␉fh = open(filename, 0);␊
52␊
53␉␉if(fh < 0)␊
54␉␉{␊
55␉␉␉sprintf(filename, "/Extra/Postboot.img");␉// Check /Extra if not in rd(0,0)␊
56␉␉␉fh = open(filename, 0);␊
57␉␉}␊
58␉}␉␉␊
59␊
60␉if (fh >= 0)␊
61␉{␊
62␉␉verbose("Enabling ramdisk %s\n", filename);␊
63␊
64␉␉ramdiskPtr.size = file_size(fh);␊
65␉␉ramdiskPtr.base = AllocateKernelMemory(ramdiskPtr.size);␊
66␊
67␉␉if(ramdiskPtr.size && ramdiskPtr.base)␊
68␉␉{␊
69␉␉␉// Read new ramdisk image contents in kernel memory.␊
70␉␉␉if (read(fh, (char*) ramdiskPtr.base, ramdiskPtr.size) == ramdiskPtr.size)␊
71␉␉␉{␊
72␉␉␉␉AllocateMemoryRange("RAMDisk", ramdiskPtr.base, ramdiskPtr.size, kBootDriverTypeInvalid);␊
73␉␉␉␉Node* node = DT__FindNode("/chosen/memory-map", false);␊
74␉␉␉␉if(node != NULL)␊
75␉␉␉␉{␊
76␉␉␉␉␉DT__AddProperty(node, "RAMDisk", sizeof(RAMDiskParam), (void*)&ramdiskPtr);␉␉␊
77␉␉␉␉}␊
78␉␉␉␉else␊
79␉␉␉␉{␊
80␉␉␉␉␉verbose("Unable to notify Mac OS X of the ramdisk %s.\n", filename);␊
81␉␉␉␉}␊
82␉␉␉}␊
83␉␉␉else␊
84␉␉␉{␊
85␉␉␉␉verbose("Unable to read md0 image %s.\n", filename);␊
86␉␉␉}␉␉␉␊
87␉␉}␊
88␉␉else␊
89␉␉{␊
90␉␉␉verbose("md0 image %s is empty.\n", filename);␊
91␉␉}␊
92␊
93␉␉close(fh);␊
94␊
95␉}␊
96}␊
97␊
98void umountRAMDisk()␊
99{␊
100␉if (gRAMDiskMI != NULL)␊
101␉{␊
102␉␉// Release ramdisk BVRef and DiskBVMap.␊
103␉␉struct DiskBVMap *oldMap = diskResetBootVolumes(0x100);␊
104␉␉CacheReset();␊
105␉␉diskFreeMap(oldMap);␊
106␊
107␉␉// Free multiboot info and module structures.␊
108␉␉if ((void *)gRAMDiskMI->mi_mods_addr != NULL) free((void *)gRAMDiskMI->mi_mods_addr);␊
109␉␉if (gRAMDiskMI != NULL) free(gRAMDiskMI);␊
110␊
111␉␉// Reset multiboot structures.␊
112␉␉gMI = gRAMDiskMI = NULL;␊
113␉␉*gRAMDiskFile = '\0';␊
114␊
115␉␉// Release ramdisk driver hooks.␊
116␉␉p_get_ramdisk_info = NULL;␊
117␉␉p_ramdiskReadBytes = NULL;␊
118␊
119␉␉// Reset ramdisk bvr␊
120␉␉gRAMDiskVolume = NULL;␊
121␉␉printf("\nunmounting: done");␊
122␉}␊
123}␊
124␊
125int mountRAMDisk(const char * param)␊
126{␊
127␉int fh = 0, ramDiskSize;␊
128␉int error = 0;␊
129␊
130␉// Get file handle for ramdisk file.␊
131␉fh = open(param, 0);␊
132␉if (fh != -1)␊
133␉{␊
134␉␉printf("\nreading ramdisk image: %s", param);␊
135␊
136␉␉ramDiskSize = file_size(fh);␊
137␉␉if (ramDiskSize > 0)␊
138␉␉{␊
139␉␉␉// Unmount previously mounted image if exists.␊
140␉␉␉umountRAMDisk();␊
141␊
142␉␉␉// Read new ramdisk image contents into PREBOOT_DATA area.␊
143␉␉␉if (read(fh, (char *)PREBOOT_DATA, ramDiskSize) != ramDiskSize) error = -1;␊
144␉␉}␊
145␉␉else error = -1;␊
146␊
147␉␉close(fh);␊
148␉}␊
149␉else error = -1;␊
150␊
151␉if (error == 0)␊
152␉{␊
153␉␉// Save filename in gRAMDiskFile to display information.␊
154␉␉strcpy(gRAMDiskFile, param);␊
155␊
156␉␉// Set gMI as well for the multiboot ramdisk driver hook.␊
157␉␉gMI = gRAMDiskMI = malloc(sizeof(multiboot_info));␊
158␉␉struct multiboot_module * ramdisk_module = malloc(sizeof(multiboot_module));␊
159␊
160␉␉// Fill in multiboot info and module structures.␊
161␉␉if (gRAMDiskMI != NULL && ramdisk_module != NULL)␊
162␉␉{␊
163␉␉␉gRAMDiskMI->mi_mods_count = 1;␊
164␉␉␉gRAMDiskMI->mi_mods_addr = (uint32_t)ramdisk_module;␊
165␉␉␉ramdisk_module->mm_mod_start = PREBOOT_DATA;␊
166␉␉␉ramdisk_module->mm_mod_end = PREBOOT_DATA + ramDiskSize;␊
167␊
168␉␉␉// Set ramdisk driver hooks.␊
169␉␉␉p_get_ramdisk_info = &multiboot_get_ramdisk_info;␊
170␉␉␉p_ramdiskReadBytes = &multibootRamdiskReadBytes;␊
171␊
172␉␉␉int partCount; // unused␊
173␉␉␉// Save bvr of the mounted image.␊
174␉␉␉gRAMDiskVolume = diskScanBootVolumes(0x100, &partCount);␊
175␉␉␉if(gRAMDiskVolume == NULL)␊
176␉␉␉{␊
177␉␉␉␉umountRAMDisk();␊
178␉␉␉␉printf("\nRamdisk contains no partitions.");␊
179␉␉␉}␊
180␉␉␉else␊
181␉␉␉{␊
182␉␉␉␉char dirSpec[128];␊
183␊
184␉␉␉␉// Reading ramdisk configuration.␊
185␉␉␉␉strcpy(dirSpec, RAMDISKCONFIG_FILENAME);␊
186␊
187␉␉␉␉if (loadConfigFile(dirSpec, &bootInfo->ramdiskConfig) == 0)␊
188␉␉␉␉{␊
189␉␉␉␉␉getBoolForKey("BTAlias", &gRAMDiskBTAliased, &bootInfo->ramdiskConfig);␊
190␉␉␉␉}␊
191␉␉␉␉else␊
192␉␉␉␉{␊
193␉␉␉␉␉printf("\nno ramdisk config...\n");␊
194␉␉␉␉}␊
195␊
196␉␉␉␉printf("\nmounting: done");␊
197␉␉␉}␊
198␉␉}␊
199␉}␊
200␊
201␉return error;␊
202}␊
203␊
204void setRAMDiskBTHook(bool mode)␊
205{␊
206␉gRAMDiskBTAliased = mode;␊
207␉if (mode)␊
208␉{␊
209␉␉printf("\nEnabled bt(0,0) alias.");␊
210␉}␊
211␉else␊
212␉{␊
213␉␉printf("\nDisabled bt(0,0) alias.");␊
214␉}␊
215}␊
216␊
217void showInfoRAMDisk(void)␊
218{␊
219␉int len;␊
220␉const char *val;␊
221␊
222␉if (gRAMDiskMI != NULL)␊
223␉{␊
224␉␉struct multiboot_module * ramdisk_module = (void *)gRAMDiskMI->mi_mods_addr;␊
225␊
226␉␉printf("\nfile: %s %d", gRAMDiskFile,␊
227␉␉ramdisk_module->mm_mod_end - ramdisk_module->mm_mod_start);␊
228␉␉printf("\nalias: %s", gRAMDiskBTAliased ? "enabled" : "disabled");␊
229␊
230␉␉// Display ramdisk information if available.␊
231␉␉if (getValueForKey("Info", &val, &len, &bootInfo->ramdiskConfig))␊
232␉␉{␊
233␉␉␉printf("\ninfo: %s", val);␊
234␉␉}␊
235␉␉else␊
236␉␉{␊
237␉␉␉printf("\nramdisk info not available.");␊
238␉␉}␊
239␉}␊
240␉else␊
241␉{␊
242␉␉printf("\nNo ramdisk mounted.");␊
243␉}␊
244}␊
245␊
246int loadPrebootRAMDisk()␊
247{␊
248␉mountRAMDisk("bt(0,0)/Extra/Preboot.dmg");␊
249␉if (gRAMDiskMI != NULL)␊
250␉{␊
251␉␉printf("\n");␊
252␉␉return 0;␊
253␉}␊
254␉else␊
255␉{␊
256␉␉return -1;␊
257␉}␊
258}␊
259␊
260void processRAMDiskCommand(char ** argPtr, const char * cmd)␊
261{␊
262␉char * ptr = *argPtr;␊
263␉char param[1024];␊
264␉getNextArg(&ptr, param);␊
265␊
266␉if (strcmp(cmd, "m") == 0)␊
267␉{␊
268␉␉mountRAMDisk(param);␊
269␉␉sleep(2);␊
270␉}␊
271␉else if (strcmp(cmd, "u") == 0)␊
272␉{␊
273␉␉umountRAMDisk();␊
274␉␉sleep(2);␊
275␉}␊
276␉else if (strcmp(cmd, "e") == 0)␊
277␉{␊
278␉␉setRAMDiskBTHook(true);␊
279␉␉sleep(2);␊
280␉}␊
281␉else if (strcmp(cmd, "d") == 0)␊
282␉{␊
283␉␉setRAMDiskBTHook(false);␊
284␉␉sleep(2);␊
285␉}␊
286␉else if (strcmp(cmd, "i") == 0)␊
287␉{␊
288␉␉setActiveDisplayPage(1);␊
289␉␉clearScreenRows(0, 24);␊
290␉␉setCursorPosition(0, 0, 1);␊
291␉␉showInfoRAMDisk();␊
292␉␉printf("\n\nPress any key to continue.\n");␊
293␉␉getc();␊
294␉␉setActiveDisplayPage(0);␊
295␉}␊
296␉else␊
297␉{␊
298␉␉setActiveDisplayPage(1);␊
299␉␉clearScreenRows(0, 24);␊
300␉␉setCursorPosition(0, 0, 1);␊
301␉␉printf("\nusage:\n");␊
302␉␉printf("\n?rd i - display ramdisk information");␊
303␉␉printf("\n?rd m <filename> - mount ramdisk image\n?rd u - unmount ramdisk image");␊
304␉␉printf("\n?rd e - enable bt(0,0) alias\n?rd d - disable bt(0,0) alias");␊
305␉␉printf("\n\nPress any key to continue.\n");␊
306␉␉getc();␊
307␉␉setActiveDisplayPage(0);␊
308␉}␊
309}␊
310

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