- Merge from trunk up to r45543
[reactos.git] / boot / armllb / os / loader.c
1 /*
2 * PROJECT: ReactOS Boot Loader
3 * LICENSE: BSD - See COPYING.ARM in the top level directory
4 * FILE: boot/armllb/os/loader.c
5 * PURPOSE: OS Loader Code for LLB
6 * PROGRAMMERS: ReactOS Portable Systems Group
7 */
8
9 #include "precomp.h"
10
11 BIOS_MEMORY_MAP MemoryMap[32];
12 ARM_BOARD_CONFIGURATION_BLOCK ArmBlock;
13 POSLOADER_INIT LoaderInit;
14
15 VOID
16 NTAPI
17 LlbAllocateMemoryEntry(IN BIOS_MEMORY_TYPE Type,
18 IN ULONG BaseAddress,
19 IN ULONG Length)
20 {
21 PBIOS_MEMORY_MAP Entry;
22
23 /* Get the next memory entry */
24 Entry = MemoryMap;
25 while (Entry->Length) Entry++;
26
27 /* Fill it out */
28 Entry->Length = Length;
29 Entry->BaseAddress = BaseAddress;
30 Entry->Type = Type;
31
32 /* Block count */
33 ArmBlock.MemoryMapEntryCount++;
34 }
35
36 VOID
37 NTAPI
38 LlbSetCommandLine(IN PCHAR CommandLine)
39 {
40 /* Copy the command line in the ARM block */
41 strcpy(ArmBlock.CommandLine, CommandLine);
42 }
43
44 VOID
45 NTAPI
46 LlbBuildArmBlock(VOID)
47 {
48 /* Write version number */
49 ArmBlock.MajorVersion = ARM_BOARD_CONFIGURATION_MAJOR_VERSION;
50 ArmBlock.MinorVersion = ARM_BOARD_CONFIGURATION_MINOR_VERSION;
51
52 /* Get arch type */
53 ArmBlock.BoardType = LlbHwGetBoardType();
54
55 /* Get peripheral clock rate */
56 ArmBlock.ClockRate = LlbHwGetPClk();
57
58 /* Get timer and serial port base addresses */
59 ArmBlock.TimerRegisterBase = LlbHwGetTmr0Base();
60 ArmBlock.UartRegisterBase = LlbHwGetUartBase(LlbHwGetSerialUart());
61
62 /* Debug */
63 DbgPrint("Machine Identifier: %lx\nPCLK: %d\nTIMER 0: %p\nSERIAL UART: %p\n",
64 ArmBlock.BoardType,
65 ArmBlock.ClockRate,
66 ArmBlock.TimerRegisterBase,
67 ArmBlock.UartRegisterBase);
68
69 /* Now load the memory map */
70 ArmBlock.MemoryMap = MemoryMap;
71
72 /* Write firmware callbacks */
73 ArmBlock.ConsPutChar = LlbFwPutChar;
74 ArmBlock.ConsKbHit = LlbFwKbHit;
75 ArmBlock.ConsGetCh = LlbFwGetCh;
76 ArmBlock.VideoClearScreen = LlbFwVideoClearScreen;
77 ArmBlock.VideoSetDisplayMode = LlbFwVideoSetDisplayMode;
78 ArmBlock.VideoGetDisplaySize = LlbFwVideoGetDisplaySize;
79 ArmBlock.VideoPutChar = LlbFwVideoPutChar;
80 ArmBlock.GetTime = LlbFwGetTime;
81 }
82
83 VOID
84 NTAPI
85 LlbBuildMemoryMap(VOID)
86 {
87 /* Zero out the memory map */
88 memset(MemoryMap, 0, sizeof(MemoryMap));
89
90 /* Call the hardware-specific function for hardware-defined regions */
91 LlbHwBuildMemoryMap(MemoryMap);
92 }
93
94 VOID
95 NTAPI
96 LlbLoadOsLoader(VOID)
97 {
98 PCHAR BootDevice;
99
100 /* Read the current boot device */
101 BootDevice = LlbEnvRead("boot-device");
102 printf("Loading OS Loader from: %s...\n", BootDevice);
103 if (!strcmp(BootDevice, "NAND"))
104 {
105 // todo
106 }
107 else if (!strcmp(BootDevice, "RAMDISK"))
108 {
109 /* Call the hardware-specific function */
110 LoaderInit = LlbHwLoadOsLoaderFromRam();
111 }
112 else if (!strcmp(BootDevice, "MMC") ||
113 !strcmp(BootDevice, "SD"))
114 {
115 //todo
116 }
117 else if (!strcmp(BootDevice, "HDD"))
118 {
119 //todo
120 }
121 printf("OS Loader loaded at 0x%p...JUMP!\n\n\n\n\n", LoaderInit);
122 }
123
124 VOID
125 NTAPI
126 LlbBoot(VOID)
127 {
128 /* Setup the ARM block */
129 LlbBuildArmBlock();
130
131 /* Build the memory map */
132 LlbBuildMemoryMap();
133
134 /* Load the OS loader */
135 LlbLoadOsLoader();
136
137 /* Jump to the OS Loader (FreeLDR in this case) */
138 LoaderInit(&ArmBlock);
139 }
140
141 /* EOF */