1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
//This file contains the kernel's main procedure
#include <common.h>
#include <Core/multiboot.wtf.h>
#include <Devices/Display/VGATextOutput.class.h>
#include <Devices/Display/VESADisplay.class.h>
#include <Devices/Keyboard/PS2Keyboard.class.h>
#include <Devices/Floppy/FloppyDrive.class.h>
#include <Devices/ATA/ATAController.class.h>
#include <Devices/Timer.class.h>
#include <DeviceManager/Disp.ns.h>
#include <DeviceManager/Dev.ns.h>
#include <DeviceManager/Kbd.ns.h>
#include <DeviceManager/Time.ns.h>
#include <VTManager/ScrollableVT.class.h>
#include <VTManager/FileVT.class.h>
#include <MemoryManager/PhysMem.ns.h>
#include <MemoryManager/PageAlloc.ns.h>
#include <MemoryManager/GDT.ns.h>
#include <TaskManager/Task.ns.h>
#include <UserManager/Usr.ns.h>
#include <SyscallManager/IDT.ns.h>
#include <String.class.h>
#include <ByteArray.class.h>
#include <Rand.ns.h>
#include <VFS/Part.ns.h>
#include <FileSystems/RamFS/RamFS.class.h>
#include <FileSystems/FAT/FATFS.class.h>
#include <VFS/FileNode.class.h>
#include <VFS/VFS.ns.h>
#include <VFS/DirectoryNode.class.h>
#include <Core/Log.ns.h>
#include <Core/SB.ns.h>
#include <Shell/KernelShell.class.h>
#include <Map.class.h>
#include <Ressources/Graphics/logo.text.cxd>
extern u32int end; //Placement address
extern "C" void kmain(multiboot_info_t* mbd, u32int magic);
SimpleVT* kvt;
void kmain(multiboot_info_t* mbd, u32int magic) {
DEBUG("Entering kmain.");
if (magic != MULTIBOOT_BOOTLOADER_MAGIC) {
Mem::placementAddress = (u32int)&end; //Setup basic stuff so that PANIC will work
VGATextOutput *vgaout = new VGATextOutput();
Disp::setText(vgaout);
PANIC("Error with multiboot header.");
}
//Setup placement address so that we can use new without overwriting modules
Mem::placementAddress = (u32int)&end;
mbd->cmdline += 0xC0000000; mbd->mods_addr += 0xC0000000; //Take stuff into acount
module_t *mods = (module_t*)mbd->mods_addr;
for (u32int i = 0; i < mbd->mods_count; i++) {
mods[i].mod_start += 0xC0000000;
mods[i].mod_end += 0xC0000000;
if (mods[i].mod_end > Mem::placementAddress)
Mem::placementAddress = mods[i].mod_end + 0x1000;
}
//************************************** BASIC KERNEL SETUP
//Create text output
VGATextOutput *vgaout = new VGATextOutput();
Disp::setText(vgaout);
SB::init();
//Create a VT for logging what kernel does
SB::progress("Create kernel VT");
kvt = new ScrollableVT(24, 80, 20, KVT_FGCOLOR, KVT_BGCOLOR);
kvt->map(1, 0);
*kvt << MVT::setcolor(TXTLOGO_FGCOLOR, TXTLOGO_BGCOLOR);
for (int i = 0; i < melonLogoLines; i++) {
*kvt << MVT::setcsrcol(40 - (melonLogoCols / 2));
*kvt << melonLogo[i] << "\n";
}
*kvt << MVT::setcolor(KVT_FGCOLOR, KVT_BGCOLOR);
SB::progress("IDT");
IDT::init(); //Setup interrupts
SB::progress("Paging");
u32int totalRam = ((mbd->mem_upper + mbd->mem_lower) * 1024);
PhysMem::initPaging(totalRam); //Setup paging
SB::progress("GDT");
GDT::init(); //Initialize real GDT, not fake one from loader.wtf.asm
PhysMem::removeTemporaryPages(); //Remove useless page mapping
SB::progress("Heap");
Mem::createHeap(); //Create kernel heap
Dev::registerDevice(vgaout);
SB::progress("Timer");
Dev::registerDevice(new Timer()); //Initialize timer
String kcmdline((char*)mbd->cmdline);
SB::progress("Multitasking");
Task::initialize(kcmdline, kvt); //Initialize multitasking
SB::gomulti();
asm volatile("sti");
//*************************************** PARSE COMMAND LINE
SB::progress("Parse command line");
Vector<String> opts = kcmdline.split(" ");
String keymap = "builtin", init = "/System/Applications/PaperWork.app";
String root = "ramfs:0";
Vector<String> mount;
bool enableVESA = true;
for (u32int i = 0; i < opts.size(); i++) {
Vector<String> opt = opts[i].split(":");
if (opt[0] == "vesa" && opt[1] != "enabled") enableVESA = false;
if (opt[0] == "keymap") keymap = opt[1];
if (opt[0] == "init") init = opt[1];
if (opt[0] == "root") root = opts[i].substr(5);
if (opt[0] == "mount") mount.push(opts[i].substr(6));
}
//*************************************** DEVICE SETUP
SB::progress("Keyboard"); Dev::registerDevice(new PS2Keyboard()); //Initialize keyboard driver
Kbd::setFocus(kvt); //Set focus to virtual terminal
SB::progress("VESA"); if (enableVESA) Dev::registerDevice(new VESADisplay());
SB::progress("Floppy"); FloppyController::detect();
SB::progress("Hard disk drives"); ATAController::detect();
//*************************************** MOUNT FILESYSTEMS
SB::progress("Root filesystem");
{ // mount root filesystem
if (!VFS::mount(String("/:") += root, kvt, mbd)) PANIC("Cannot mount root filesystem.");
}
DirectoryNode* cwd;
cwd = VFS::getRootNode();
Task::currProcess()->setCwd(cwd);
SB::progress("File systems");
// mount other filesystems
for (u32int i = 0; i < mount.size(); i++) {
VFS::mount(mount[i], kvt, mbd);
}
{
TextFile mounts("/System/Configuration/Mount", FM_READ);
while (mounts.valid() && !mounts.eof()) {
String m = mounts.readLine();
if (!m.empty() && m[0] != WChar("#")) VFS::mount(m, kvt, mbd);
}
}
//*************************************** LOAD SYSTEM STUFF
SB::progress("Logging");
Log::init(KL_STATUS); //Setup logging
Log::log(KL_STATUS, "kmain : Melon booting.");
if (keymap != "builtin") {
SB::progress("Keymap");
if (!Kbd::loadKeymap(keymap)) Log::log(KL_WARNING, String("WARNING : Could not load keymap ") += keymap += ", using built-in keymap instead.");
}
SB::progress("Users");
Usr::load(); //Setup user managment
Log::log(KL_STATUS, "kmain : User list loaded");
SB::progress("Video mode selection");
Disp::selectMode();
if (init.empty()) {
SB::progress("Start kernel shell");
*kvt << "\n";
new KernelShell(cwd, kvt);
SB::message("Melon is running");
while (KernelShell::getInstances() > 0) {
Task::currThread()->sleep(100);
}
Sys::halt();
} else {
SB::progress("Launch INIT");
Process* p = Process::run(init, 0);
if (p == 0) {
PANIC((char*)(u8int*)ByteArray(String("Could not launch init : ") += init));
} else {
Log::log(KL_STATUS, String("kmain : Starting init : ") += init);
p->setInVT(kvt);
p->setOutVT(kvt);
p->start();
SB::message("Init started");
while (p->getState() != P_FINISHED) Task::currThread()->sleep(100);
PANIC("Init has terminated");
}
}
PANIC("END OF KMAIN");
}
|
