X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Kernel%2Farch%2Fx86%2Fmain.c;h=a65c2308d2e2dce230f02e25fd6a157a0368e86a;hb=eb98f1f2915446ef05120482a2fc353c76330b50;hp=2dca563503507ba58c154e27b861f371bd42aeb2;hpb=b98fbd4e9c71447d81fc9bd643fb174c76346e0f;p=tpg%2Facess2.git

diff --git a/Kernel/arch/x86/main.c b/Kernel/arch/x86/main.c
index 2dca5635..a65c2308 100644
--- a/Kernel/arch/x86/main.c
+++ b/Kernel/arch/x86/main.c
@@ -12,26 +12,26 @@
 
 #define	VGA_ERRORS	0
 
+#define MAX_ARGSTR_POS	(0x400000-0x2000)
+
 // === IMPORTS ===
 extern void	Heap_Install(void);
 extern void	Desctab_Install(void);
 extern void	MM_PreinitVirtual(void);
 extern void	MM_Install(tMBoot_Info *MBoot);
-extern void MM_InstallVirtual(void);
+extern void	MM_InstallVirtual(void);
 extern void	Threads_Init(void);
 extern int	Time_Setup(void);
-extern Uint	Proc_Clone(Uint *Err, Uint Flags);
-extern void	Threads_Sleep(void);
-extern void	Threads_Exit(void);
 // --- Core ---
 extern void	System_Init(char *Commandline);
 
 // === PROTOTYPES ===
-void	Arch_LoadBootModules(void);
+ int	kmain(Uint MbMagic, void *MbInfoPtr);
 
 // === GLOBALS ===
 char	*gsBootCmdLine = NULL;
 struct {
+	Uint32	PBase;
 	void	*Base;
 	Uint	Size;
 	char	*ArgString;
@@ -50,7 +50,7 @@ int kmain(Uint MbMagic, void *MbInfoPtr)
 	
 	// Set up non-boot info dependent stuff
 	Desctab_Install();	// Set up GDT and IDT
-	MM_PreinitVirtual();	// Initialise vital mappings
+	MM_PreinitVirtual();	// Initialise virtual mappings
 	
 	switch(MbMagic)
 	{
@@ -65,7 +65,7 @@ int kmain(Uint MbMagic, void *MbInfoPtr)
 	
 	// Multiboot 2
 	case MULTIBOOT2_MAGIC:
-		Warning("Multiboot 2 Not yet supported");
+		Panic("Multiboot 2 not yet supported");
 		//MM_InstallMBoot2( MbInfo );	// Set up physical memory manager
 		return 0;
 		break;
@@ -96,14 +96,30 @@ int kmain(Uint MbMagic, void *MbInfoPtr)
 	gaArch_BootModules = malloc( giArch_NumBootModules * sizeof(*gaArch_BootModules) );
 	for( i = 0; i < mbInfo->ModuleCount; i ++ )
 	{
-		// Adjust into higher half
-		mods[i].Start  += KERNEL_BASE;
-		mods[i].End    += KERNEL_BASE;
-		mods[i].String += KERNEL_BASE;
-		
-		gaArch_BootModules[i].Base = (void *)mods[i].Start;
+		 int	ofs;
+	
+		Log_Log("Arch", "Multiboot Module at 0x%08x, 0x%08x bytes (String at 0x%08x)",
+			mods[i].Start, mods[i].End-mods[i].Start, mods[i].String);
+	
+		gaArch_BootModules[i].PBase = mods[i].Start;
 		gaArch_BootModules[i].Size = mods[i].End - mods[i].Start;
-		gaArch_BootModules[i].ArgString = (char *)mods[i].String;
+	
+		// Always HW map the module data	
+		ofs = mods[i].Start&0xFFF;
+		gaArch_BootModules[i].Base = (void*)( MM_MapHWPages(mods[i].Start,
+			(gaArch_BootModules[i].Size+ofs+0xFFF) / 0x1000
+			) + ofs );
+		
+		// Only map the string if needed
+		if( (tVAddr)mods[i].String > MAX_ARGSTR_POS )
+		{
+			// Assumes the string is < 4096 bytes long)
+			gaArch_BootModules[i].ArgString = (void*)(
+				MM_MapHWPages(mods[i].String, 2) + (mods[i].String&0xFFF)
+				);
+		}
+		else
+			gaArch_BootModules[i].ArgString = (char *)mods[i].String + KERNEL_BASE;
 	}
 	
 	// Pass on to Independent Loader
@@ -118,15 +134,25 @@ int kmain(Uint MbMagic, void *MbInfoPtr)
 
 void Arch_LoadBootModules(void)
 {
-	 int	i;
+	 int	i, j, numPages;
 	for( i = 0; i < giArch_NumBootModules; i ++ )
 	{
 		Log_Log("Arch", "Loading '%s'", gaArch_BootModules[i].ArgString);
 		
 		if( !Module_LoadMem( gaArch_BootModules[i].Base, gaArch_BootModules[i].Size, gaArch_BootModules[i].ArgString ) )
 		{
-			Log_Warning("Arch", "Unable to load module\n");
+			Log_Warning("Arch", "Unable to load module");
 		}
+		
+		// Unmap and free
+		numPages = (gaArch_BootModules[i].Size + ((Uint)gaArch_BootModules[i].Base&0xFFF) + 0xFFF) >> 12;
+		MM_UnmapHWPages( (tVAddr)gaArch_BootModules[i].Base, numPages );
+		
+		for( j = 0; j < numPages; j++ )
+			MM_DerefPhys( gaArch_BootModules[i].PBase + (j << 12) );
+		
+		if( (tVAddr) gaArch_BootModules[i].ArgString > MAX_ARGSTR_POS )
+			MM_UnmapHWPages( (tVAddr)gaArch_BootModules[i].ArgString, 2 );
 	}
 	Log_Log("Arch", "Boot modules loaded");
 	free( gaArch_BootModules );