Core part of the bios no longer sets up any 16 bit segments */
__asm__ (
/* pointer to original gdt */
- "gdtarg: \n\t"
- ".word gdt_limit \n\t"
- ".long gdt \n\t"
+ "gdtarg: \n"
+ " .word gdt_limit \n"
+ " .long gdt \n"
/* compute the table limit */
- "__mygdt_limit = __mygdt_end - __mygdt - 1 \n\t"
+ "__mygdt_limit = __mygdt_end - __mygdt - 1 \n"
- "__mygdtaddr: \n\t"
- ".word __mygdt_limit \n\t"
- ".long __mygdt \n\t"
+ "__mygdtaddr: \n"
+ " .word __mygdt_limit \n"
+ " .long __mygdt \n"
-
- "__mygdt: \n\t"
+ "__mygdt: \n"
/* selgdt 0, unused */
- ".word 0x0000, 0x0000 \n\t"
- ".byte 0x00, 0x00, 0x00, 0x00 \n\t"
+ " .word 0x0000, 0x0000 \n"
+ " .byte 0x00, 0x00, 0x00, 0x00 \n"
/* selgdt 8, unused */
- ".word 0x0000, 0x0000 \n\t"
- ".byte 0x00, 0x00, 0x00, 0x00 \n\t"
+ " .word 0x0000, 0x0000 \n"
+ " .byte 0x00, 0x00, 0x00, 0x00 \n"
/* selgdt 0x10, flat code segment */
- ".word 0xffff, 0x0000 \n\t"
- ".byte 0x00, 0x9b, 0xcf, 0x00 \n\t"
+ " .word 0xffff, 0x0000 \n"
+ " .byte 0x00, 0x9b, 0xcf, 0x00 \n"
/* selgdt 0x18, flat data segment */
- ".word 0xffff, 0x0000 \n\t"
- ".byte 0x00, 0x93, 0xcf, 0x00 \n\t"
+ " .word 0xffff, 0x0000 \n"
+ " .byte 0x00, 0x93, 0xcf, 0x00 \n"
/* selgdt 0x20, unused */
- ".word 0x0000, 0x0000 \n\t"
- ".byte 0x00, 0x00, 0x00, 0x00 \n\t"
+ " .word 0x0000, 0x0000 \n"
+ " .byte 0x00, 0x00, 0x00, 0x00 \n"
- /*selgdt 0x28 16-bit 64k code at 0x00000000 */
- ".word 0xffff, 0x0000 \n\t"
- ".byte 0, 0x9a, 0, 0 \n\t"
+ /* selgdt 0x28 16-bit 64k code at 0x00000000 */
+ " .word 0xffff, 0x0000 \n"
+ " .byte 0, 0x9a, 0, 0 \n"
/* selgdt 0x30 16-bit 64k data at 0x00000000 */
- ".word 0xffff, 0x0000 \n\t"
- ".byte 0, 0x92, 0, 0 \n\t"
+ " .word 0xffff, 0x0000 \n"
+ " .byte 0, 0x92, 0, 0 \n"
- "__mygdt_end: \n\t"
+ "__mygdt_end: \n"
);
/* Declare a pointer to where our idt is going to be i.e. at mem zero */
-__asm__ (
- "__myidt: \n"
- " .word 1023 \n"
- " .long 0 \n"
- " .word 0 \n"
+__asm__ ("__myidt: \n"
+ /* 16-bit limit */
+ " .word 1023 \n"
+ /* 24-bit base */
+ " .long 0 \n"
+ " .word 0 \n"
);
/* The address arguments to this function are PHYSICAL ADDRESSES */
__asm__ __volatile__ (
// paranoia -- does ecx get saved? not sure. This is
// the easiest safe thing to do.
- " pushal\n"
+ " pushal \n"
/* save the stack */
- " mov %esp, __stack\n"
- " jmp 1f\n"
- "__stack: .long 0\n"
+ " mov %esp, __stack \n"
+ " jmp 1f \n"
+ "__stack: .long 0 \n"
"1:\n"
/* get devfn into %ecx */
- " movl %esp, %ebp\n"
- " movl 8(%ebp), %ecx\n"
+ " movl %esp, %ebp \n"
+ " movl 8(%ebp), %ecx \n"
/* load 'our' gdt */
- " lgdt %cs:__mygdtaddr \n\t"
+ " lgdt %cs:__mygdtaddr \n"
/* This configures CS properly for real mode. */
- " ljmp $0x28, $__rms_16bit\n"
- "__rms_16bit: \n"
- ".code16 \n"
+ " ljmp $0x28, $__rms_16bit\n"
+ "__rms_16bit: \n"
+ " .code16 \n"
/* 16 bit code from here on... */
/* Load the segment registers w/ properly configured segment
* descriptors. They will retain these configurations (limits,
* writability, etc.) once protected mode is turned off. */
- " mov $0x30, %ax \n"
- " mov %ax, %ds \n"
- " mov %ax, %es \n"
- " mov %ax, %fs \n"
- " mov %ax, %gs \n"
- " mov %ax, %ss \n"
+ " mov $0x30, %ax \n"
+ " mov %ax, %ds \n"
+ " mov %ax, %es \n"
+ " mov %ax, %fs \n"
+ " mov %ax, %gs \n"
+ " mov %ax, %ss \n"
/* Turn off protection (bit 0 in CR0) */
- " movl %cr0, %eax \n"
- " andl $0xFFFFFFFE, %eax \n"
- " movl %eax, %cr0 \n"
+ " movl %cr0, %eax \n"
+ " andl $0xFFFFFFFE, %eax \n"
+ " movl %eax, %cr0 \n"
/* Now really going into real mode */
- " ljmp $0, $__rms_real \n"
- "__rms_real: \n"
+ " ljmp $0, $__rms_real\n"
+ "__rms_real: \n"
- // put the stack at the end of page zero.
- // that way we can easily share it between real and protected,
- // since the 16-bit ESP at segment 0 will work for any case.
+ /* put the stack at the end of page zero.
+ * that way we can easily share it between real and protected,
+ * since the 16-bit ESP at segment 0 will work for any case.
/* Setup a stack */
- " mov $0x0, %ax \n"
- " mov %ax, %ss \n"
- " movl $0x1000, %eax \n"
- " movl %eax, %esp \n"
+ " mov $0x0, %ax \n"
+ " mov %ax, %ss \n"
+ " movl $0x1000, %eax \n"
+ " movl %eax, %esp \n"
/* Load our 16 it idt */
- " xor %ax, %ax \n"
- " mov %ax, %ds \n"
- " lidt __myidt \n"
-
+ " xor %ax, %ax \n"
+ " mov %ax, %ds \n"
+ " lidt __myidt \n"
/* Dump zeros in the other segregs */
- " mov %ax, %es \n"
- " mov %ax, %fs \n"
- " mov %ax, %gs \n"
- " mov $0x40, %ax \n"
- " mov %ax, %ds \n"
- " mov %cx, %ax \n"
- /* go run the code */
- " .byte 0x9a, 0x03, 0, 0, 0xc0 \n"
+ " mov %ax, %es \n"
+ " mov %ax, %fs \n"
+ " mov %ax, %gs \n"
+ " mov $0x40, %ax \n"
+ " mov %ax, %ds \n"
+ " mov %cx, %ax \n"
+
+ /* run VGA BIOS at 0xc000:0003 */
+ " lcall $0xc000, $0x0003\n"
/* if we got here, just about done.
* Need to get back to protected mode */
- "movl %cr0, %eax\n"
- "orl $0x0000001, %eax\n" /* PE = 1 */
- "movl %eax, %cr0\n"
+ " movl %cr0, %eax \n"
+ " orl $0x0000001, %eax\n" /* PE = 1 */
+ " movl %eax, %cr0 \n"
/* Now that we are in protected mode jump to a 32 bit code segment. */
- "data32 ljmp $0x10, $vgarestart\n"
+ " data32 ljmp $0x10, $vgarestart\n"
"vgarestart:\n"
- ".code32\n"
- " movw $0x18, %ax \n"
- " mov %ax, %ds \n"
- " mov %ax, %es \n"
- " mov %ax, %fs \n"
- " mov %ax, %gs \n"
- " mov %ax, %ss \n"
+ " .code32\n"
+ " movw $0x18, %ax \n"
+ " mov %ax, %ds \n"
+ " mov %ax, %es \n"
+ " mov %ax, %fs \n"
+ " mov %ax, %gs \n"
+ " mov %ax, %ss \n"
/* restore proper gdt and idt */
- " lgdt %cs:gdtarg \n"
- " lidt idtarg \n"
- ".globl vga_exit\n"
- "vga_exit:\n"
- " mov __stack, %esp\n"
- " popal\n"
+ " lgdt %cs:gdtarg \n"
+ " lidt idtarg \n"
+
+ ".globl vga_exit \n"
+ "vga_exit: \n"
+ " mov __stack, %esp \n"
+ " popal \n"
);
}
extern char real_mode_switch_end[];
/* call vga bios int 10 function 0x4f14 to enable main console
- epia-m does not always autosence the main console so forcing it on is good !! */
-
+ epia-m does not always autosence the main console so forcing it on is good !! */
void vga_enable_console()
{
__asm__ __volatile__ (
- // paranoia -- does ecx get saved? not sure. This is
- // the easiest safe thing to do.
- " pushal\n"
+ /* paranoia -- does ecx get saved? not sure. This is
+ * the easiest safe thing to do. */
+ " pushal \n"
/* save the stack */
- " mov %esp, __stack\n"
+ " mov %esp, __stack \n"
/* load 'our' gdt */
- " lgdt %cs:__mygdtaddr \n\t"
+ " lgdt %cs:__mygdtaddr \n"
/* This configures CS properly for real mode. */
- " ljmp $0x28, $__vga_ec_16bit\n"
- "__vga_ec_16bit: \n"
- ".code16 \n"
+ " ljmp $0x28, $__vga_ec_16bit\n"
+ "__vga_ec_16bit: \n"
+ " .code16 \n"
/* 16 bit code from here on... */
/* Load the segment registers w/ properly configured segment
* descriptors. They will retain these configurations (limits,
* writability, etc.) once protected mode is turned off. */
- " mov $0x30, %ax \n"
- " mov %ax, %ds \n"
- " mov %ax, %es \n"
- " mov %ax, %fs \n"
- " mov %ax, %gs \n"
- " mov %ax, %ss \n"
+ " mov $0x30, %ax \n"
+ " mov %ax, %ds \n"
+ " mov %ax, %es \n"
+ " mov %ax, %fs \n"
+ " mov %ax, %gs \n"
+ " mov %ax, %ss \n"
/* Turn off protection (bit 0 in CR0) */
- " movl %cr0, %eax \n"
- " andl $0xFFFFFFFE, %eax \n"
- " movl %eax, %cr0 \n"
+ " movl %cr0, %eax \n"
+ " andl $0xFFFFFFFE, %eax\n"
+ " movl %eax, %cr0 \n"
/* Now really going into real mode */
- " ljmp $0, $__vga_ec_real \n"
+ " ljmp $0, $__vga_ec_real \n"
"__vga_ec_real: \n"
- // put the stack at the end of page zero.
- // that way we can easily share it between real and protected,
- // since the 16-bit ESP at segment 0 will work for any case.
+ /* put the stack at the end of page zero.
+ * that way we can easily share it between real and protected,
+ * since the 16-bit ESP at segment 0 will work for any case.
/* Setup a stack */
- " mov $0x0, %ax \n"
- " mov %ax, %ss \n"
- " movl $0x1000, %eax \n"
- " movl %eax, %esp \n"
+ " mov $0x0, %ax \n"
+ " mov %ax, %ss \n"
+ " movl $0x1000, %eax \n"
+ " movl %eax, %esp \n"
+
/* debugging for RGM */
- " mov $0x11, %al \n"
- " outb %al, $0x80\n"
+ " mov $0x11, %al \n"
+ " outb %al, $0x80 \n"
/* Load our 16 it idt */
- " xor %ax, %ax \n"
- " mov %ax, %ds \n"
- " lidt __myidt \n"
+ " xor %ax, %ax \n"
+ " mov %ax, %ds \n"
+ " lidt __myidt \n"
/* Dump zeros in the other segregs */
- " mov %ax, %ds \n"
- " mov %ax, %es \n"
- " mov %ax, %fs \n"
- " mov %ax, %gs \n"
+ " mov %ax, %ds \n"
+ " mov %ax, %es \n"
+ " mov %ax, %fs \n"
+ " mov %ax, %gs \n"
/* ask bios to enable main console */
- /* set up for int 10 call - values found from X server bios call routines */
- " movw $0x4f14,%ax \n"
- " movw $0x8003,%bx \n"
- " movw $1, %cx \n"
- " movw $0, %dx \n"
- " movw $0, %di \n"
- " .byte 0xcd, 0x10 \n"
- " movb $0x55, %al\noutb %al, $0x80\n"
+ /* set up for int 10 call - values found from X server
+ * bios call routines */
+ " movw $0x4f14,%ax \n"
+ " movw $0x8003,%bx \n"
+ " movw $1, %cx \n"
+ " movw $0, %dx \n"
+ " movw $0, %di \n"
+ " int $0x10 \n"
+
+ " movb $0x55, %al \n"
+ " outb %al, $0x80 \n"
/* if we got here, just about done.
* Need to get back to protected mode */
- "movl %cr0, %eax\n"
- "orl $0x0000001, %eax\n" /* PE = 1 */
- "movl %eax, %cr0\n"
+ " movl %cr0, %eax \n"
+ " orl $0x0000001, %eax\n" /* PE = 1 */
+ " movl %eax, %cr0 \n"
/* Now that we are in protected mode jump to a 32 bit code segment. */
- "data32 ljmp $0x10, $vga_ec_restart\n"
+ " data32 ljmp $0x10, $vga_ec_restart\n"
"vga_ec_restart:\n"
- ".code32\n"
- " movw $0x18, %ax \n"
- " mov %ax, %ds \n"
- " mov %ax, %es \n"
- " mov %ax, %fs \n"
- " mov %ax, %gs \n"
- " mov %ax, %ss \n"
-
+ " .code32\n"
+ " movw $0x18, %ax \n"
+ " mov %ax, %ds \n"
+ " mov %ax, %es \n"
+ " mov %ax, %fs \n"
+ " mov %ax, %gs \n"
+ " mov %ax, %ss \n"
/* restore proper gdt and idt */
- " lgdt %cs:gdtarg \n"
- " lidt idtarg \n"
- ".globl vga__ec_exit\n"
+ " lgdt %cs:gdtarg \n"
+ " lidt idtarg \n"
+ " .globl vga__ec_exit \n"
"vga_ec_exit:\n"
- " mov __stack, %esp\n"
- " popal\n"
+ " mov __stack, %esp \n"
+ " popal\n"
);
}
-
-void
-do_vgabios(void)
+void do_vgabios(void)
{
device_t dev;
unsigned long busdevfn;
int i;
/* clear vga bios data area */
- for (i=0x400; i<0x500; i++) {
+ for (i = 0x400; i < 0x500; i++) {
*(unsigned char *) i = 0;
}
dev = dev_find_class(PCI_CLASS_DISPLAY_VGA<<8 , 0);
- if (! dev) {
+ if (!dev) {
printk_debug("NO VGA FOUND\n");
return;
}
printk_debug("found VGA: vid=%x, did=%x\n", dev->vendor, dev->device);
-
- /* declare rom address here - keep any config data out of the way of core LXB stuff */
+
+ /* declare rom address here - keep any config data out of the way
+ * of core LXB stuff */
rom = 0xfffc0000;
pci_write_config32(dev, PCI_ROM_ADDRESS, rom|1);
real_mode_switch_call_vga(busdevfn);
} else
printk_debug("Failed to copy VGA BIOS to 0xc0000\n");
-
} else
printk_debug("BAD SIGNATURE 0x%x 0x%x\n", buf[0], buf[1]);
-
- pci_write_config32(dev, PCI_ROM_ADDRESS, 0);
+ pci_write_config32(dev, PCI_ROM_ADDRESS, 0);
}
// more complex code in linuxbios itself. This helps a lot as we don't
// have to do address fixup in this little stub, and calls are absolute
// so the handler is relocatable.
-void handler(void) {
+void handler(void)
+{
__asm__ __volatile__ (
- ".code16\n"
- "idthandle:\n"
- " pushal\n"
- " movb $0, %al\n"
- " ljmp $0, $callbiosint16\n"
- "end_idthandle:\n"
- ".code32\n"
+ " .code16 \n"
+ "idthandle: \n"
+ " pushal \n"
+ " movb $0, %al \n"
+ " ljmp $0, $callbiosint16\n"
+ "end_idthandle: \n"
+ " .code32 \n"
);
-
}
-void debughandler(void) {
+void debughandler(void)
+{
__asm__ __volatile__ (
- ".code16\n"
- "debughandle:\n"
- " pushw %cx \n"
- " movw $250, %cx \n"
- "dbh1: \n"
- " loop dbh1 \n"
- " popw %cx \n"
- " iret \n"
- "end_debughandle:\n"
- ".code32\n"
+ " .code16 \n"
+ "debughandle: \n"
+ " pushw %cx \n"
+ " movw $250, %cx \n"
+ "dbh1: \n"
+ " loop dbh1 \n"
+ " popw %cx \n"
+ " iret \n"
+ "end_debughandle: \n"
+ ".code32 \n"
);
-
}
// Calling conventions. The first C function is called with this stuff
// the C function will call the biosint function with these as
// REFERENCE parameters. In this way, we can easily get
// returns back to the INTx caller (i.e. vgabios)
-void callbiosint(void) {
+void callbiosint(void)
+{
__asm__ __volatile__ (
- ".code16\n"
- "callbiosint16:\n"
- " push %ds \n"
- " push %es \n"
- " push %fs \n"
- " push %gs \n"
+ " .code16 \n"
+ "callbiosint16: \n"
+ " push %ds \n"
+ " push %es \n"
+ " push %fs \n"
+ " push %gs \n"
// clean up the int #. To save space we put it in the lower
// byte. But the top 24 bits are junk.
- "andl $0xff, %eax\n"
+ " andl $0xff, %eax\n"
// this push does two things:
// - put the INT # on the stack as a parameter
// - provides us with a temp for the %cr0 mods.
- "pushl %eax\n"
- "movl %cr0, %eax\n"
- //"andl $0x7FFAFFD1, %eax\n" /* PG,AM,WP,NE,TS,EM,MP = 0 */
- //"orl $0x60000001, %eax\n" /* CD, NW, PE = 1 */
- "orl $0x00000001, %eax\n" /* PE = 1 */
- "movl %eax, %cr0\n"
+ " pushl %eax \n"
+ " movl %cr0, %eax\n"
+ " orl $0x00000001, %eax\n" /* PE = 1 */
+ " movl %eax, %cr0\n"
/* Now that we are in protected mode jump to a 32 bit code segment. */
- "data32 ljmp $0x10, $biosprotect\n"
- "biosprotect:\n"
- ".code32\n"
- " movw $0x18, %ax \n"
- " mov %ax, %ds \n"
- " mov %ax, %es \n"
- " mov %ax, %fs \n"
- " mov %ax, %gs \n"
- " mov %ax, %ss \n"
- " lidt idtarg \n"
+ " data32 ljmp $0x10, $biosprotect\n"
+ "biosprotect: \n"
+ " .code32 \n"
+ " movw $0x18, %ax \n"
+ " mov %ax, %ds \n"
+ " mov %ax, %es \n"
+ " mov %ax, %fs \n"
+ " mov %ax, %gs \n"
+ " mov %ax, %ss \n"
+ " lidt idtarg \n"
" call biosint \n"
// back to real mode ...
- " ljmp $0x28, $__rms_16bit2\n"
- "__rms_16bit2: \n"
- ".code16 \n" /* 16 bit code from here on... */
-
+ " ljmp $0x28, $__rms_16bit2\n"
+ "__rms_16bit2: \n"
+ " .code16 \n"
+ /* 16 bit code from here on... */
/* Load the segment registers w/ properly configured segment
* descriptors. They will retain these configurations (limits,
* writability, etc.) once protected mode is turned off. */
- " mov $0x30, %ax \n"
- " mov %ax, %ds \n"
- " mov %ax, %es \n"
- " mov %ax, %fs \n"
- " mov %ax, %gs \n"
- " mov %ax, %ss \n"
+ " mov $0x30, %ax \n"
+ " mov %ax, %ds \n"
+ " mov %ax, %es \n"
+ " mov %ax, %fs \n"
+ " mov %ax, %gs \n"
+ " mov %ax, %ss \n"
/* Turn off protection (bit 0 in CR0) */
- " movl %cr0, %eax \n"
- " andl $0xFFFFFFFE, %eax \n"
- " movl %eax, %cr0 \n"
-
+ " movl %cr0, %eax \n"
+ " andl $0xFFFFFFFE, %eax \n"
+ " movl %eax, %cr0 \n"
+
/* Now really going into real mode */
- " ljmp $0, $__rms_real2 \n"
- "__rms_real2: \n"
-
- /* Setup a stack */
- " mov $0x0, %ax \n"
- " mov %ax, %ss \n"
+ " ljmp $0, $__rms_real2 \n"
+ "__rms_real2: \n"
+
+ /* Setup a stack
+ * FixME: where is esp? */
+ " mov $0x0, %ax \n"
+ " mov %ax, %ss \n"
+
/* ebugging for RGM */
- " mov $0x11, %al \n"
- " outb %al, $0x80\n"
- " xor %ax, %ax \n"
- " mov %ax, %ds \n"
- " lidt __myidt \n"
- " mov %ax, %es \n"
- " mov %ax, %fs \n"
- " mov %ax, %gs \n"
- " mov $0x40, %ax \n"
- " mov %ax, %ds \n"
- // pop the INT # that you pushed earlier
- " popl %eax\n"
- " pop %gs \n"
- " pop %fs \n"
- " pop %es \n"
- " pop %ds \n"
- " popal\n"
- " iret\n"
- ".code32\n"
+ " mov $0x11, %al \n"
+ " outb %al, $0x80 \n"
+
+ /* Load our 16 it idt */
+ " xor %ax, %ax \n"
+ " mov %ax, %ds \n"
+ " lidt __myidt \n"
+
+ /* Dump zeros in the other segregs */
+ " mov %ax, %es \n"
+ " mov %ax, %fs \n"
+ " mov %ax, %gs \n"
+ " mov $0x40, %ax \n"
+ " mov %ax, %ds \n"
+
+ /* pop the INT # that you pushed earlier */
+ " popl %eax \n"
+ " pop %gs \n"
+ " pop %fs \n"
+ " pop %es \n"
+ " pop %ds \n"
+ " popal \n"
+ " iret \n"
+ " .code32 \n"
);
}
-
enum {
PCIBIOS = 0x1a,
MEMSIZE = 0x12
};
-int
-pcibios(
- unsigned long *pedi,
- unsigned long *pesi,
- unsigned long *pebp,
- unsigned long *pesp,
- unsigned long *pebx,
- unsigned long *pedx,
- unsigned long *pecx,
- unsigned long *peax,
- unsigned long *pflags
- );
-int
-handleint21(
- unsigned long *pedi,
- unsigned long *pesi,
- unsigned long *pebp,
- unsigned long *pesp,
- unsigned long *pebx,
- unsigned long *pedx,
- unsigned long *pecx,
- unsigned long *peax,
- unsigned long *pflags
+
+int pcibios(unsigned long *pedi, unsigned long *pesi, unsigned long *pebp,
+ unsigned long *pesp, unsigned long *pebx, unsigned long *pedx,
+ unsigned long *pecx, unsigned long *peax, unsigned long *pflags);
+
+int handleint21(unsigned long *pedi, unsigned long *pesi, unsigned long *pebp,
+ unsigned long *pesp, unsigned long *pebx, unsigned long *pedx,
+ unsigned long *pecx, unsigned long *peax, unsigned long *pflags
);
extern void vga_exit(void);
-int
-biosint(
- unsigned long intnumber,
- unsigned long gsfs,
- unsigned long dses,
- unsigned long edi,
- unsigned long esi,
- unsigned long ebp,
- unsigned long esp,
- unsigned long ebx,
- unsigned long edx,
- unsigned long ecx,
- unsigned long eax,
- unsigned long cs_ip,
- unsigned short stackflags
- ) {
+int biosint(unsigned long intnumber,
+ unsigned long gsfs, unsigned long dses,
+ unsigned long edi, unsigned long esi,
+ unsigned long ebp, unsigned long esp,
+ unsigned long ebx, unsigned long edx,
+ unsigned long ecx, unsigned long eax,
+ unsigned long cs_ip, unsigned short stackflags)
+{
unsigned long ip;
unsigned long cs;
unsigned long flags;
cs = cs_ip >> 16;
flags = stackflags;
- printk_debug("biosint: # 0x%lx, eax 0x%lx ebx 0x%lx ecx 0x%lx edx 0x%lx\n",
- intnumber, eax, ebx, ecx, edx);
- printk_debug("biosint: ebp 0x%lx esp 0x%lx edi 0x%lx esi 0x%lx\n", ebp, esp, edi, esi);
- printk_debug("biosint: ip 0x%x cs 0x%x flags 0x%x\n", ip, cs, flags);
+ printk_debug("biosint: INT# 0x%lx\n", intnumber);
+ printk_debug("biosint: eax 0x%lx ebx 0x%lx ecx 0x%lx edx 0x%lx\n",
+ eax, ebx, ecx, edx);
+ printk_debug("biosint: ebp 0x%lx esp 0x%lx edi 0x%lx esi 0x%lx\n",
+ ebp, esp, edi, esi);
+ printk_debug("biosint: ip 0x%x cs 0x%x flags 0x%x\n",
+ ip, cs, flags);
+
// cases in a good compiler are just as good as your own tables.
switch (intnumber) {
case 0 ... 15:
intbyte = codeptr + 3;
*intbyte = 0x42; /* int42 is the relocated int10 */
- /* debug handler - useful to set a programmable delay between instructions if the TF bit is set upon
- call to real mode */
+ /* debug handler - useful to set a programmable delay between instructions if the
+ TF bit is set upon call to real mode */
idts[1].cs = 0;
idts[1].offset = 16384;
memcpy(16384, &debughandle, &end_debughandle - &debughandle);
};
int
-pcibios(
- unsigned long *pedi,
- unsigned long *pesi,
- unsigned long *pebp,
- unsigned long *pesp,
- unsigned long *pebx,
- unsigned long *pedx,
- unsigned long *pecx,
- unsigned long *peax,
- unsigned long *pflags
- ) {
+pcibios(unsigned long *pedi, unsigned long *pesi, unsigned long *pebp,
+ unsigned long *pesp, unsigned long *pebx, unsigned long *pedx,
+ unsigned long *pecx, unsigned long *peax, unsigned long *pflags)
+{
unsigned long edi = *pedi;
unsigned long esi = *pesi;
unsigned long ebp = *pebp;
if (retval)
retval = PCIBIOS_BADREG;
- printk_debug("0x%x: bus %d devfn 0x%x reg 0x%x val 0x%lx\n", func, bus, devfn, reg, *pecx);
+ printk_debug("0x%x: bus %d devfn 0x%x reg 0x%x val 0x%lx\n",
+ func, bus, devfn, reg, *pecx);
*peax = 0;
retval = 0;
}
return retval;
}
-
-
-int handleint21( unsigned long *edi, unsigned long *esi, unsigned long *ebp,
- unsigned long *esp, unsigned long *ebx, unsigned long *edx,
- unsigned long *ecx, unsigned long *eax, unsigned long *flags)
+int handleint21(unsigned long *edi, unsigned long *esi, unsigned long *ebp,
+ unsigned long *esp, unsigned long *ebx, unsigned long *edx,
+ unsigned long *ecx, unsigned long *eax, unsigned long *flags)
{
-int res=-1;
+ int res=-1;
switch(*eax&0xffff)
{
case 0x5f19:
projects / coreboot.git / commitdiff