X-Git-Url: http://git.joshuawise.com/netwatch.git/blobdiff_plain/113df320fe8e5e3f069c974546162d9329da8e31..33e49b2e6d599bc56326841b5b373b9f76adc5f7:/aseg-paging/pagingstub.c

diff --git a/aseg-paging/pagingstub.c b/aseg-paging/pagingstub.c
deleted file mode 100644
index 0a79385..0000000
--- a/aseg-paging/pagingstub.c
+++ /dev/null
@@ -1,135 +0,0 @@
-#include <io.h>
-#include <smram.h>
-#include <video_defines.h>
-#include <minilib.h>
-#include <smi.h>
-#include <pci-bother.h>
-#include <serial.h>
-#include "../net/net.h"
-#include "vga-overlay.h"
-
-#include "vm_flags.h"
-#include "pagetable.h"
-
-void set_cr0(unsigned int);
-void ps_switch_stack (void (*call)(), int stack);
-
-extern int entry_initialized;
-extern int _bss, _bssend, _end;
-void smi_entry();
-#define get_cr0() \
-    ({ \
-        register unsigned int _temp__; \
-        asm volatile("mov %%cr0, %0" : "=r" (_temp__)); \
-        _temp__; \
-    })
-
-
-#define set_cr3(value) \
-    { \
-        register unsigned int _temp__ = (value); \
-        asm volatile("mov %0, %%cr3" : : "r" (_temp__)); \
-     }
-#define	CR0_PG	0x80000000
-
-#define MAP_FLAGS	(PTE_PRESENT | PTE_READ_WRITE)
-
-void * pt_setup(int smbase, int tseg_start, int tseg_size) {
-	int i;
-	outb(0x80, 0x51);
-
-	/* The page directory and page table live at SMBASE and SMBASE + 0x1000,
-	 * respectively; clear them. */
-	int * pagedirectory = (int *) tseg_start;
-	int * pagetable = (int *) (tseg_start + 0x1000);
-
-	/* Clear out the page directory except for one entry pointing to the
-	 * page table, and clear the page table entirely. */
-	outb(0x80, 0x52);
-	pagedirectory[0] = (tseg_start + 0x1000) | PTE_PRESENT | PTE_READ_WRITE;
-	outb(0x80, 0x53);
-	for (i = 1; i < 1024; i++)
-	{
-		pagedirectory[i] = 0;
-	}
-
-	outb(0x80, 0x54);
-	for (i = 0; i < 1024; i++)
-	{
-		pagetable[i] = 0;
-	}
-	outb(0x80, 0x55);
-
-	/* The page at 0x10000 - 0x10FFF points to the SMI entry point,
-	 * SMBASE + 0x8000. */
-	pagetable[16] = (0x8000 + smbase) | MAP_FLAGS;
-
-	/* 0x11000 to 0x1EFFF map to the rest of ASEG up to SMBASE + 0xF000;
-	 * the page containing the saved state is not mappped to our code
-	 * region.  */
-
-	for (i = 0; i < 8; i++)
-	{
-		pagetable[17 + i] = (i * 0x1000 + smbase) | MAP_FLAGS;
-	}
-
-	for (i = 0; i < 6; i++)
-	{
-		pagetable[25 + i] = (smbase + 0x9000 + i * 0x1000) | MAP_FLAGS;
-	}
-
-	outb(0x80, 0x56);
-	/* Map 0xA8000 to itself. */
-
-	for (i = 0; i < 32; i++) { 
-		pagetable[0xA0 + i] = (0xA0000 + i * 0x1000) | MAP_FLAGS;
-	}
-
-	/* Map 0x200000 to TSEG */
-	for (i = 0; i < 128; i++) {
-		pagetable[0x200 + i] = (tseg_start + 0x2000 + i * 0x1000) | MAP_FLAGS;
-	}
-
-	/* Map 0x300000 -> 0x200000, so we can copy our code out of
-	 * RAM the first time around */
-	for (i = 0; i < 256; i++) {
-		pagetable[0x300 + i] = (0x200000 + i * 0x1000) | MAP_FLAGS;
-	}
-
-	outb(0x80, 0x57);
-	return pagedirectory;
-}
-
-void c_entry(void)
-{
-	unsigned char *bp;
-
-	outb(0x80, 0x41);
-	if (!entry_initialized)
-		pt_setup(0xA0000, 0x1FF80000, 0x80000);
-		
-	/* Enable paging. */
-	outb(0x80, 0x42);
-	set_cr3(0x1FF80000);
-	set_cr0(get_cr0() | CR0_PG);
-	
-	outb(0x80, 0x43);
-	if (!entry_initialized) {
-		extern void __firstrun_start();
-		
-		/* If needed, copy in data. */
-		for (bp = (void *)0x200000; (void *)bp < (void *)&_bss; bp++)
-			*bp = *(bp + 0x100000);
-		for (bp = (void *)&_bss; (void *)bp < (void *)&_bssend; bp++)
-			*bp = 0;
-		serial_init();
-		dolog("Paging enabled.");
-		__firstrun_start();	/* Now initialize BSS, etc. */
-		
-		entry_initialized = 1;
-	}
-
-	outb(0x80, 0x44);
-	ps_switch_stack(smi_entry, 0x270000);
-	outb(0x80, 0xFA);
-}