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1/*␊
2 * Template by (c) 2009 Evan Lojewski. All rights reserved.␊
3 *␊
4 * NVRAM module by Slice 2010.␊
5 */␊
6␊
7#include "libsaio.h"␊
8#include "modules.h"␊
9#include "boot.h"␊
10#include "bootstruct.h"␊
11#include "pci.h"␊
12#include "efi.h"␊
13#include "smbios_getters.h"␊
14#include "xml.h"␊
15␊
16#ifndef DEBUG_NVRAM␊
17#define DEBUG_NVRAM 0␊
18#endif␊
19␊
20#if DEBUG_NVRAM␊
21#define DBG(x...) printf(x)␊
22#else␊
23#define DBG(x...) msglog(x)␊
24#endif␊
25␊
26/*static const char const FIRMWARE_REVISION_PROP[] = "firmware-revision";␊
27static const char const FIRMWARE_ABI_PROP[] = "firmware-abi";␊
28static const char const FIRMWARE_VENDOR_PROP[] = "firmware-vendor";␊
29static const char const FIRMWARE_ABI_32_PROP_VALUE[] = "EFI32";␊
30static const char const FIRMWARE_ABI_64_PROP_VALUE[] = "EFI64";␊
31static const char const SYSTEM_ID_PROP[] = "system-id";␊
32static const char const SYSTEM_SERIAL_PROP[] = "SystemSerialNumber";␊
33static const char const SYSTEM_TYPE_PROP[] = "system-type";␊
34static const char const MODEL_PROP[] = "Model";␊
35 */␊
36const char PLATFORM_UUID[] = "platform-uuid"; ␊
37//EFI_UINT32 const FIRMWARE_FEATURE_MASK = 0x000003FF;␊
38EFI_UINT32 const STATIC_ZERO = 0;␊
39␊
40#define kBL_GLOBAL_NVRAM_GUID "8BE4DF61-93CA-11D2-AA0D-00E098032B8C"␊
41␊
42// Check if a system supports CSM legacy mode␊
43#define kBL_APPLE_VENDOR_NVRAM_GUID "4D1EDE05-38C7-4A6A-9CC6-4BCCA8B38C14"␊
44#define UUID_LEN␉16␊
45␊
46//extern EFI_GUID* getSystemID();␊
47void NVRAM_start(void);␊
48␊
49typedef struct {␊
50␉char Name[32];␊
51␉char Value[512];␊
52} variables;␊
53int readNVRAM(variables* v);␊
54␊
55␊
56void NVRAM_hook(void* arg1, void* arg2, void* arg3, void* arg4);␊
57/*␊
58void NVRAM_start_hook(void* arg1, void* arg2, void* arg3, void* arg4)␊
59{␊
60␉msglog("NVRAM started with ExecKernel\n");␊
61␊
62}␊
63*/␊
64␊
65void NVRAM_start()␊
66{␊
67//␉register_hook_callback("ExecKernel", &NVRAM_start_hook); ␊
68␉//␉register_hook_callback("Kernel Start", &NVRAM_hook);␊
69␉register_hook_callback("ModulesLoaded", &NVRAM_hook);␊
70}␊
71␊
72void NVRAM_hook(void* arg1, void* arg2, void* arg3, void* arg4)␊
73{␊
74␉char␉␉bootName[128];␊
75␉variables*␉var;␊
76␉char*␉␉ffName;␊
77␉uint8_t *␉FirmwareFeatures;␊
78␉EFI_UINT32*␉FirmwareFeaturesMask;␊
79␉char*␉␉ffmName;␊
80␉char*␉␉boName;␊
81␉char*␉␉bnName;␊
82//␉EFI_GUID*␉ret = 0;␊
83␉uint16_t␉bootOptionNumber = 0;␊
84␉int i, j;␊
85␉␊
86//␉BLESS_EFI_LOAD_OPTION* NextBoot =(BLESS_EFI_LOAD_OPTION*)gBootOrder;␊
87␉␊
88␉DBG("NVRAM started with ModulesLoaded\n");␊
89␉␊
90␉//Slice create /options node -> /fakenvram␊
91␉// I need to use fakenvram until I know what is happen␊
92//␉bool UseNVRAM = FALSE;␊
93␉bool ClearNVRAM = FALSE;␊
94␉const char* buff;␊
95//␉TagPtr␉dictionary;␊
96␉int cnt;␊
97␉var = malloc(sizeof(variables)+1);␊
98␉ClearNVRAM = getValueForKey("-c", &buff, &cnt, &bootInfo->bootConfig);␊
99␉if (!ClearNVRAM) {␉␉␊
100␉␉readNVRAM(var);␊
101␉}␊
102␊
103␉for (i=0; i<32; i++) {␊
104␉␉if (var[i].Name[0] == 0) {␊
105␉␉␉break;␊
106␉␉}␊
107␉␉if (strcmp(var[i].Name, "efi-boot-device")==0) {␊
108␉␉␉//XMLParseFile(var[i].Value, &dictionary);␊
109␉␉␉//buff = XMLGetProperty(dictionary, "BLLastBSDName")->string;␊
110␉␉␉verbose("Required boot device is %s\n", var[i].Value);␊
111␉␉␉//NextBoot->FilePathListLength = 1;␊
112␉␉␉//strcpy(NextBoot->Description, buff);␊
113␉␉␉break;␊
114␉␉}␊
115␉}␊
116␉␊
117␉Node* optionsNode = DT__FindNode("/options", true); //"/fakenvram"␊
118␉ffName = malloc(sizeof(PLATFORM_UUID)+1);␊
119␉strcpy(ffName, PLATFORM_UUID);␊
120//␉ret = getSystemID();␊
121//␉DT__AddProperty(optionsNode, ffName, UUID_LEN, (EFI_UINT32*) ret);␉␉␊
122␉␉␊
123␉␉// this information can be obtained from DMI Type 0␊
124␉␉SMBByte* p = (SMBByte*)FindFirstDmiTableOfType(0, 0x18);␊
125␉␉FirmwareFeatures = malloc(sizeof(SMBByte));␊
126␉␉//TODO - the bufferFF must be composed from bits p[0x12] and [0x13]. Datasheet needed␊
127␉␉*FirmwareFeatures = ((p[19] >> 1) & 1) //USB Legacy is supported␊
128␉␉␉| ((p[18] >> 14) & 2) //Boot from CD is supported␊
129␉␉␉| 0x14; //default for bless (GUID partition)␊
130␉␉␊
131␉␉sprintf(bootName, "%s:FirmwareFeatures", kBL_APPLE_VENDOR_NVRAM_GUID);␊
132␉␉ffName = malloc(sizeof(bootName)+1);␊
133␉␉strcpy(ffName, bootName);␊
134␉␉DT__AddProperty(optionsNode, ffName, sizeof(uint32_t), (char *)FirmwareFeatures); //legacy support␊
135␉␉␊
136␉␉sprintf(bootName, "%s:FirmwareFeaturesMask", kBL_APPLE_VENDOR_NVRAM_GUID);␊
137␉FirmwareFeaturesMask = malloc(sizeof(EFI_UINT32));␊
138␉*FirmwareFeaturesMask = (EFI_UINT32)0x3ff;␊
139␉␉ffmName = malloc(sizeof(bootName)+1);␊
140␉␉strcpy(ffmName, bootName);␉␊
141␉␉DT__AddProperty(optionsNode, ffmName, sizeof(uint32_t), (EFI_UINT32*)FirmwareFeaturesMask); ␉␊
142␉␉␊
143␉␉//TODO - check, validate and fill by bvr structure.␊
144␉␉//here I am not sure what is BootOrder: node or property?␊
145␉␉//Node* bootNode = DT__AddChild(optionsNode, kBL_GLOBAL_NVRAM_GUID ":BootOrder");␊
146␉␉sprintf(bootName, "%s:BootOrder", kBL_GLOBAL_NVRAM_GUID);␊
147␉␉boName = malloc(sizeof(bootName)+1);␊
148␉␉strcpy(boName, bootName);␉␉␊
149␉␉DT__AddProperty(optionsNode, boName, sizeof(uint32_t), (EFI_UINT32*)&STATIC_ZERO);␉␊
150␉␉␊
151␉␉sprintf(bootName, "%s:Boot%04hx", kBL_GLOBAL_NVRAM_GUID, bootOptionNumber);␊
152␉␉bnName = malloc(sizeof(bootName)+1);␊
153␉␉strcpy(bnName, bootName);␉␉␉␊
154␉␉DT__AddProperty(optionsNode, bnName, sizeof(uint32_t), (EFI_UINT32*)&STATIC_ZERO); ␊
155␉␉␊
156␉␉␊
157␉␉//can we add here boot-properties?␊
158␉␉//␉optionsNode = DT__FindNode("chosen", true);␊
159#if NOTYET␊
160␉␉int lbC = 0;␊
161␉␉while(((char*)&bootInfo->bootConfig)[lbC++]);␊
162␉␉if (lbC > sizeof(bootInfo->bootConfig)) lbC = sizeof(bootInfo->bootConfig);␊
163␉␉DT__AddProperty(optionsNode, "boot-args", lbC, (char*)&bootInfo->bootConfig);␉␊
164#endif␊
165␉␉//TODO - BootCamp emulation?␊
166␉␉/*␊
167␉␉ romNode = DT__FindNode("/rom", true);␊
168␉␉ DT__AddProperty(romNode, "fv-main-address"... //provided by AppleSMBIOS␊
169␉␉ DT__AddProperty(romNode, "fv-main-size"...␊
170␉␉ "IOEFIDevicePathType" -> "MediaFirmwareVolumeFilePath"␊
171␉␉ "Guid" -> "2B0585EB-D8B8-49A9-8B8C-E21B01AEF2B7"␊
172␉␉ ␊
173␉␉ */␊
174␉␉//␊
175␊
176␉␉for (i=0; i<32; i++) {␊
177␉␉␉DBG("NVRAM get a name %s\n", var[i].Name);␊
178␉␉␉if (var[i].Name[0]) {␊
179␉␉␉␉if (isdigit(var[i].Name[0])) {␊
180␉␉␉␉␉msglog(" ...it is digit...\n");␊
181␉␉␉␉␉continue;␊
182␉␉␉␉}␊
183␉␉␉␉j=0; ␊
184␉␉␉␉while (var[i].Value[j++]);␊
185␉␉␉␉DT__AddProperty(optionsNode, var[i].Name, j,&var[i].Value);␊
186#if 1 //DEBUG_NVRAM␊
187␉␉␉␉DBG("NVRAM add name=%s value=%s length=%d\n", var[i].Name, var[i].Value, j);␊
188#endif␊
189␉␉␉} else {␊
190␉␉␉␉break;␊
191␉␉␉}␊
192␊
193␉␉}␊
194␉//Serialization?␊
195␉bnName[0] = bnName[1] = 0;␊
196␉DT__AddProperty(optionsNode, bnName, sizeof(uint32_t), (EFI_UINT32*)&STATIC_ZERO);␊
197}␊
198␊
199const char NVRAM_INF[] = "nvram.inf";␊
200int readNVRAM(variables* var)␊
201{␊
202␉int fd, fsize;␊
203␉char* nvr = 0;␊
204␉DBG("Start NVRAM reading\n");␊
205␉if ((fd = open(NVRAM_INF, 0)) < 0) {␊
206␉␉DBG("[ERROR] open NVRAM failed\n");␊
207␉␉return -1;␊
208␉}␊
209␉fsize = file_size(fd);␊
210␉if (!fsize) {␊
211␉␉DBG(" zero NVRAM file\n");␊
212␉␉close (fd);␊
213␉␉return -1;␊
214␉}␊
215␉if ((nvr = malloc(fsize)) == NULL) {␊
216␉␉DBG("[ERROR] alloc NVRAM memory failed\n");␊
217␉␉close (fd);␊
218␉␉return -1;␊
219␉}␊
220␉if (read (fd, nvr, fsize) != fsize) {␊
221␉␉DBG("[ERROR] read %s failed\n", NVRAM_INF);␊
222␉␉close (fd);␊
223␉␉return -1;␊
224␉}␊
225␉close (fd);␊
226/*␉if ((var = malloc(fsize)) == NULL) {␊
227␉␉DBG("[ERROR] alloc VAR memory failed\n");␊
228␉␉return -1;␊
229␉}*/␊
230␉int i = 0;␊
231␉char * onvr = nvr;␊
232␉bool skipGUID;␊
233␉while (*nvr) {␊
234␉␉int j = 0;␊
235␉␉skipGUID = false;␊
236␉␉DBG("Name[%d]:", i);␊
237␉␉while (*nvr != 9) {␊
238//␉␉␉DBG("%c", *nvr);␊
239␉␉␉if (*nvr == 4) {␊
240␉␉␉␉skipGUID = true; //TODO this is GUID␊
241␉␉␉␉nvr++;␊
242␉␉␉} else ␊
243␉␉␉␉var[i].Name[j++] = *nvr++; ␊
244␉␉}␊
245␉␉DBG("\n");␊
246␉␉nvr++; //skip \09␊
247␉␉var[i].Name[j] = 0; //end of c-string␊
248␉␉if (skipGUID) {␊
249␉␉␉//TODO this is GUID␊
250␉␉␉DBG("skip GUID\n");␊
251␉␉␉while (*nvr++ != 0x0A) {}␊
252␉␉␉i--;␊
253␉␉} else {␊
254␉␉␉␊
255␉␉␉j = 0;␊
256␉␉␉unsigned char c;␊
257␉␉␉while (*nvr != 0x0A) {␊
258␉␉␉␉c = *nvr++;␊
259␉␉␉␉if (c == 0x25) { //TODO this is hex ␊
260␉␉␉␉␉int k1=*nvr++;␊
261␉␉␉␉␉if ((k1 >= 0x30) && (k1 <= 0x39)) {␊
262␉␉␉␉␉␉k1 = k1 - 0x30;␊
263␉␉␉␉␉}␊
264␉␉␉␉␉if ((k1 > 0x60) && (k1 <= 0x66)) {␊
265␉␉␉␉␉␉k1 = k1 - 0x60 + 10;␊
266␉␉␉␉␉}␊
267␉␉␉␉␉int k2=*nvr++;␊
268␉␉␉␉␉if ((k2 >= 0x30) && (k2 <= 0x39)) {␊
269␉␉␉␉␉␉k2 = k2 - 0x30;␊
270␉␉␉␉␉}␊
271␉␉␉␉␉if ((k2 > 0x60) && (k2 <= 0x66)) {␊
272␉␉␉␉␉␉k2 = k2 - 0x60 + 10;␊
273␉␉␉␉␉}␊
274␉␉␉␉␉c = (k1 << 4) + k2;␊
275␉␉␉␉␉//break; ␊
276␉␉␉␉}␊
277␉␉␉␉var[i].Value[j++] = c; ␊
278␉␉␉}␊
279␉␉␉nvr++;␊
280␉␉␉DBG("Value[%d]:", i);␊
281␉␉␉int m;␊
282␉␉␉for (m=0; m<j; m++) {␊
283//␉␉␉␉DBG("%02x ", var[i].Value[m]);␊
284␉␉␉}␊
285␉␉␉//␉DBG("Value[%d]:%s\n", i, var[i].Value);␊
286␉␉␉DBG("\n");␊
287␉␉}␊
288␉␉i++;␊
289␉␉if ((int)(nvr - onvr) > fsize) {␊
290␉␉␉DBG("end of buffer\n");␊
291␉␉␉break;␊
292␉␉}␊
293␉}␊
294␉var[i].Name[0]=0;␊
295␉var[i].Name[1]=0;␊
296␊
297␉return 0;␊
298}

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