8 #include <multiboot2.h>
16 #define KERNEL_LOAD 0x100000 // 1MiB
17 #define MAX_ARGSTR_POS (0x400000-0x2000)
18 #define MAX_PMEMMAP_ENTS 16
21 extern char gKernelEnd[];
22 extern void Heap_Install(void);
23 extern void MM_PreinitVirtual(void);
24 extern void MM_Install(int NPMemRanges, tPMemMapEnt *PMemRanges);
25 extern void MM_InstallVirtual(void);
26 extern int Time_Setup(void);
29 int kmain(Uint MbMagic, void *MbInfoPtr);
32 char *gsBootCmdLine = NULL;
33 tBootModule *gaArch_BootModules;
34 int giArch_NumBootModules = 0;
37 int kmain(Uint MbMagic, void *MbInfoPtr)
40 tPMemMapEnt pmemmap[MAX_PMEMMAP_ENTS];
43 LogF("%s\r\n", gsBuildInfo);
45 MM_PreinitVirtual(); // Initialise virtual mappings
52 case MULTIBOOT_MAGIC: {
53 // TODO: Handle when this isn't in the mapped area
54 gsBootCmdLine = (char*)(mbInfo->CommandLine + KERNEL_BASE);
56 // Adjust Multiboot structure address
57 mbInfo = (void*)( (tVAddr)MbInfoPtr + KERNEL_BASE );
59 nPMemMapEnts = Multiboot_LoadMemoryMap(mbInfo, KERNEL_BASE, pmemmap, MAX_PMEMMAP_ENTS,
60 KERNEL_LOAD, (tVAddr)&gKernelEnd - KERNEL_BASE);
65 case MULTIBOOT2_MAGIC:
66 Panic("Multiboot 2 not yet supported");
67 //MM_InstallMBoot2( MbInfo ); // Set up physical memory manager
72 Panic("Multiboot magic invalid %08x, expected %08x or %08x\n",
73 MbMagic, MULTIBOOT_MAGIC, MULTIBOOT2_MAGIC);
77 // Set up physical memory manager
78 MM_Install(nPMemMapEnts, pmemmap);
80 MM_InstallVirtual(); // Clean up virtual address space
81 Heap_Install(); // Create initial heap
82 Time_Setup(); // Initialise timing
87 Log_Log("Arch", "Starting VFS...");
88 // Load Virtual Filesystem
91 // Load initial modules
92 gaArch_BootModules = Multiboot_LoadModules(mbInfo, KERNEL_BASE, &giArch_NumBootModules);
94 // Pass on to Independent Loader
95 Log_Log("Arch", "Starting system");
96 System_Init(gsBootCmdLine);
98 // Sleep forever (sleeping beauty)
104 void Arch_LoadBootModules(void)
107 for( i = 0; i < giArch_NumBootModules; i ++ )
109 Log_Log("Arch", "Loading '%s'", gaArch_BootModules[i].ArgString);
111 if( !Module_LoadMem( gaArch_BootModules[i].Base,
112 gaArch_BootModules[i].Size, gaArch_BootModules[i].ArgString
115 Log_Warning("Arch", "Unable to load module");
119 numPages = (gaArch_BootModules[i].Size + ((Uint)gaArch_BootModules[i].Base&0xFFF) + 0xFFF) >> 12;
120 MM_UnmapHWPages( (tVAddr)gaArch_BootModules[i].Base, numPages );
122 for( j = 0; j < numPages; j++ )
123 MM_DerefPhys( gaArch_BootModules[i].PBase + (j << 12) );
125 if( (tVAddr) gaArch_BootModules[i].ArgString > MAX_ARGSTR_POS )
126 MM_UnmapHWPages( (tVAddr)gaArch_BootModules[i].ArgString, 2 );
128 Log_Log("Arch", "Boot modules loaded");
129 if( gaArch_BootModules )
130 free( gaArch_BootModules );