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Root/branches/slice/i386/modules/NVRAM/NVRAM.c

1/*␊
2 * Idea and 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_patcher.h"␊
14␊
15#ifndef DEBUG_NVRAM␊
16#define DEBUG_NVRAM 0␊
17#endif␊
18␊
19#if DEBUG_NVRAM␊
20#define DBG(x...) verbose(x)␊
21#else␊
22#define DBG(x...) msglog(x)␊
23#endif␊
24␊
25/*static const char const FIRMWARE_REVISION_PROP[] = "firmware-revision";␊
26static const char const FIRMWARE_ABI_PROP[] = "firmware-abi";␊
27static const char const FIRMWARE_VENDOR_PROP[] = "firmware-vendor";␊
28static const char const FIRMWARE_ABI_32_PROP_VALUE[] = "EFI32";␊
29static const char const FIRMWARE_ABI_64_PROP_VALUE[] = "EFI64";␊
30static const char const SYSTEM_ID_PROP[] = "system-id";␊
31static const char const SYSTEM_SERIAL_PROP[] = "SystemSerialNumber";␊
32static const char const SYSTEM_TYPE_PROP[] = "system-type";␊
33static const char const MODEL_PROP[] = "Model";␊
34 */␊
35const char PLATFORM_UUID[] = "platform-uuid"; ␊
36//EFI_UINT32 const FIRMWARE_FEATURE_MASK = 0x000003FF;␊
37EFI_UINT32 const STATIC_ZERO = 0;␊
38␊
39#define kBL_GLOBAL_NVRAM_GUID "8BE4DF61-93CA-11D2-AA0D-00E098032B8C"␊
40␊
41// Check if a system supports CSM legacy mode␊
42#define kBL_APPLE_VENDOR_NVRAM_GUID "4D1EDE05-38C7-4A6A-9CC6-4BCCA8B38C14"␊
43#define UUID_LEN␉16␊
44␊
45extern EFI_GUID* getSystemID();␊
46void NVRAM_hook(void* arg1, void* arg2, void* arg3, void* arg4);␊
47void NVRAM_start(void);␊
48int readNVRAM(void);␊
49␊
50typedef struct {␊
51␉char Name[32];␊
52␉char Value[512];␊
53} variables;␊
54variables* var;␊
55␊
56void NVRAM_hook(void* arg1, void* arg2, void* arg3, void* arg4)␊
57{␊
58␉char␉␉bootName[128];␊
59␉␊
60␉char*␉␉ffName;␊
61␉uint8_t *␉FirmwareFeatures;␊
62␉uint8_t *␉FirmwareFeaturesMask;␊
63␉char*␉␉ffmName;␊
64␉char*␉␉boName;␊
65␉char*␉␉bnName;␊
66␉EFI_GUID*␉ret = 0;␊
67␉uint16_t␉bootOptionNumber = 0;␊
68␉msglog("NVRAM is not implemented yet\n");␊
69␉return;␊
70␉␊
71␉msglog("NVRAM started\n");␊
72␉␊
73␉//Slice create /options node -> /fakenvram␊
74␉// I need to use fakenvram until I know what is happen␊
75//␉bool UseNVRAM = FALSE;␊
76␉bool ClearNVRAM = FALSE;␊
77␉const char* buff;␊
78␉int cnt;␊
79␉ClearNVRAM = getValueForKey(kClearNVRAM, &buff, &cnt, &bootInfo->bootConfig);␊
80␉if (!ClearNVRAM) {␊
81␉␉readNVRAM();␊
82␉}␊
83␉␉␊
84␉Node* optionsNode = DT__FindNode("/options", true);␊
85␉ffName = malloc(sizeof(PLATFORM_UUID)+1);␊
86␉strcpy(ffName, PLATFORM_UUID);␊
87␉ret = getSystemID();␊
88␉DT__AddProperty(optionsNode, ffName, UUID_LEN, (EFI_UINT32*) ret);␉␉␊
89␉␉␊
90␉␉// this information can be obtained from DMI Type 0␊
91␉␉SMBByte* p = (SMBByte*)FindFirstDmiTableOfType(0, 0x18);␊
92␉␉FirmwareFeatures = malloc(sizeof(SMBByte));␊
93␉␉//TODO - the bufferFF must be composed from bits p[0x12] and [0x13]. Datasheet needed␊
94␉␉*FirmwareFeatures = ((p[19] >> 1) & 1) //USB Legacy is supported␊
95␉␉␉| ((p[18] >> 14) & 2) //Boot from CD is supported␊
96␉␉␉| 0x14; //default for bless (GUID partition)␊
97␉␉␊
98␉␉sprintf(bootName, "%s:FirmwareFeatures", kBL_APPLE_VENDOR_NVRAM_GUID);␊
99␉␉ffName = malloc(sizeof(bootName)+1);␊
100␉␉strcpy(ffName, bootName);␊
101␉␉DT__AddProperty(optionsNode, ffName, sizeof(uint32_t), (char *)FirmwareFeatures); //legacy support␊
102␉␉␊
103␉␉sprintf(bootName, "%s:FirmwareFeaturesMask", kBL_APPLE_VENDOR_NVRAM_GUID);␊
104␉FirmwareFeaturesMask = malloc(sizeof(EFI_UINT32));␊
105␉*FirmwareFeaturesMask = (EFI_UINT32)0x3ff;␊
106␉␉ffmName = malloc(sizeof(bootName)+1);␊
107␉␉strcpy(ffmName, bootName);␉␊
108␉␉DT__AddProperty(optionsNode, ffmName, sizeof(uint32_t), (EFI_UINT32*)FirmwareFeaturesMask); ␉␊
109␉␉␊
110␉␉//TODO - check, validate and fill by bvr structure.␊
111␉␉//here I am not sure what is BootOrder: node or property?␊
112␉␉//Node* bootNode = DT__AddChild(optionsNode, kBL_GLOBAL_NVRAM_GUID ":BootOrder");␊
113␉␉sprintf(bootName, "%s:BootOrder", kBL_GLOBAL_NVRAM_GUID);␊
114␉␉boName = malloc(sizeof(bootName)+1);␊
115␉␉strcpy(boName, bootName);␉␉␊
116␉␉DT__AddProperty(optionsNode, boName, sizeof(uint32_t), (EFI_UINT32*)&STATIC_ZERO);␉␊
117␉␉␊
118␉␉sprintf(bootName, "%s:Boot%04hx", kBL_GLOBAL_NVRAM_GUID, bootOptionNumber);␊
119␉␉bnName = malloc(sizeof(bootName)+1);␊
120␉␉strcpy(bnName, bootName);␉␉␉␊
121␉␉DT__AddProperty(optionsNode, bnName, sizeof(uint32_t), (EFI_UINT32*)&STATIC_ZERO); ␊
122␉␉␊
123␉␉␊
124␉␉//can we add here boot-properties?␊
125␉␉//␉optionsNode = DT__FindNode("chosen", true);␊
126#if 1 //NOTYET␊
127␉␉int lbC = 0;␊
128␉␉while(((char*)&bootInfo->bootConfig)[lbC++]);␊
129␉␉if (lbC > sizeof(bootInfo->bootConfig)) lbC = sizeof(bootInfo->bootConfig);␊
130␉␉DT__AddProperty(optionsNode, "boot-args", lbC, (char*)&bootInfo->bootConfig);␉␊
131#endif␊
132␉␉//TODO - BootCamp emulation?␊
133␉␉/*␊
134␉␉ romNode = DT__FindNode("/rom", true);␊
135␉␉ DT__AddProperty(romNode, "fv-main-address"... //provided by AppleSMBIOS␊
136␉␉ DT__AddProperty(romNode, "fv-main-size"...␊
137␉␉ "IOEFIDevicePathType" -> "MediaFirmwareVolumeFilePath"␊
138␉␉ "Guid" -> "2B0585EB-D8B8-49A9-8B8C-E21B01AEF2B7"␊
139␉␉ ␊
140␉␉ */␊
141␉␉//end Slice␊
142}␊
143␊
144void NVRAM_start()␊
145{␊
146␉register_hook_callback("Kernel Start", &NVRAM_hook);␊
147}␊
148␊
149const char NVRAM_INF[] = "nvram.inf";␊
150int readNVRAM()␊
151{␊
152␉int fd, fsize;␊
153␉char* nvr = 0;␊
154␉if ((fd = open(NVRAM_INF, 0)) < 0) {␊
155␉␉return -1;␊
156␉}␊
157␉fsize = file_size(fd);␊
158␉if ((nvr = malloc(fsize)) == NULL) {␊
159␉␉verbose("[ERROR] alloc NVRAM memory failed\n");␊
160␉␉close (fd);␊
161␉␉return -1;␊
162␉}␊
163␉if (read (fd, nvr, fsize) != fsize) {␊
164␉␉verbose("[ERROR] read %s failed\n", NVRAM_INF);␊
165␉␉close (fd);␊
166␉␉return -1;␊
167␉}␊
168␉close (fd);␊
169␉if ((var = malloc(fsize)) == NULL) {␊
170␉␉verbose("[ERROR] alloc VAR memory failed\n");␊
171␉␉return -1;␊
172␉}␊
173␉int i = 0;␊
174␉bool skipGUID;␊
175␉while (*nvr) {␊
176␉␉int j = 0;␊
177␉␉skipGUID = false;␊
178␉␉while (*nvr != 9) {␊
179␉␉␉if (*nvr == 4) {␊
180␉␉␉␉skipGUID = true; //TODO this is GUID␊
181␉␉␉}␊
182␉␉␉var[i].Name[j++] = *nvr++; ␊
183␉␉}␊
184␉␉nvr++; //skip \09␊
185␉␉var[i].Name[j] = 0; //end of c-string␊
186␉␉if (skipGUID) {␊
187␉␉␉//TODO this is GUID␊
188␉␉␉while (*nvr++ != 0x0A) {}␊
189␉␉␉i--;␊
190␉␉} else {␊
191␉␉␉␊
192␉␉␉j = 0;␊
193␉␉␉char c;␊
194␉␉␉while (*nvr != 0x0A) {␊
195␉␉␉␉c = *nvr++;␊
196␉␉␉␉if (c == 0x25) { //TODO this is hex ␊
197␉␉␉␉␉int k1=*nvr++;␊
198␉␉␉␉␉if ((k1 > 0x30) && (k1 < 0x39)) {␊
199␉␉␉␉␉␉k1 = k1 - 0x30;␊
200␉␉␉␉␉}␊
201␉␉␉␉␉if ((k1 > 0x60) && (k1 < 0x69)) {␊
202␉␉␉␉␉␉k1 = k1 - 0x60 + 10;␊
203␉␉␉␉␉}␊
204␉␉␉␉␉int k2=*nvr++;␊
205␉␉␉␉␉if ((k2 > 0x30) && (k2 < 0x39)) {␊
206␉␉␉␉␉␉k2 = k2 - 0x30;␊
207␉␉␉␉␉}␊
208␉␉␉␉␉if ((k2 > 0x60) && (k2 < 0x69)) {␊
209␉␉␉␉␉␉k2 = k2 - 0x60 + 10;␊
210␉␉␉␉␉}␊
211␉␉␉␉␉c = (k1 << 4) + k2;␊
212␉␉␉␉␉break; ␊
213␉␉␉␉}␊
214␉␉␉␉var[i].Value[j++] = c; ␊
215␉␉␉}␊
216␉␉}␊
217␉␉i++;␊
218␉␉if (i > fsize) {␊
219␉␉␉break;␊
220␉␉}␊
221␉}␊
222␉␊
223␉return 0;␊
224}

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