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epia-m support

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git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1655 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Ronald G. Minnich
2004-10-06 17:33:54 +00:00
parent 4fa89208a1
commit 02fa3b2743
32 changed files with 1945 additions and 405 deletions
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2
src/pc80/Config.lb
View File

@@ -3,7 +3,7 @@ uses CONFIG_LEGACY_VGABIOS
object mc146818rtc.o
object isa-dma.o
#object i8259.o CONFIG_I8259
object i8259.o
#object udelay_timer2.o CONFIG_UDELAY_TIMER2
#object beep.o CONFIG_BEEP
#object vga_load_regs.o VIDEO_CONSOLE

2
src/pc80/keyboard.c
View File

@@ -5,7 +5,7 @@
/* much better keyboard init courtesy ollie@sis.com.tw
TODO: Typematic Setting, the keyboard is too slow for me */
static void pc_keyboard_init(struct pc_keyboard *keyboard)
void pc_keyboard_init(struct pc_keyboard *keyboard)
{
volatile unsigned char regval;

258
src/pc80/vgabios.c
View File

@@ -1,8 +1,10 @@
#include <pci.h>
#include <pci_ids.h>
#include <console/console.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#undef __KERNEL__
#include <arch/io.h>
#include <printk.h>
//#include <printk.h>
#include <string.h>
#include "vgachip.h"
@@ -121,6 +123,8 @@ static void real_mode_switch_call_vga(unsigned long devfn)
" mov %ax, %es \n"
" mov %ax, %fs \n"
" mov %ax, %gs \n"
" mov $0x40, %ax \n"
" mov %ax, %ds \n"
" mov %cx, %ax \n"
" .byte 0x9a, 0x03, 0, 0, 0xc0 \n"
" movb $0x55, %al\noutb %al, $0x80\n"
@@ -151,10 +155,99 @@ static void real_mode_switch_call_vga(unsigned long devfn)
__asm__ (".text\n""real_mode_switch_end:\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 !! */
void vga_enable_console()
{
__asm__ __volatile__ (
// paranoia -- does ecx get saved? not sure. This is
// the easiest safe thing to do.
" pushal\n"
/* save the stack */
" mov %esp, __stack\n"
/* This configures CS properly for real mode. */
" 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"
/* Turn off protection (bit 0 in CR0) */
" movl %cr0, %eax \n"
" andl $0xFFFFFFFE, %eax \n"
" movl %eax, %cr0 \n"
/* Now really going into real mode */
" 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.
/* Setup a stack */
" 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"
/* Dump zeros in the other segregs */
" xor %ax, %ax \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"
/* if we got here, just about done.
* Need to get back to protected mode */
"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 $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"
"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"
".globl vga__ec_exit\n"
"vga_ec_exit:\n"
" mov __stack, %esp\n"
" popal\n"
);
}
void
do_vgabios(void)
{
struct pci_dev *dev;
device_t dev;
unsigned long busdevfn;
unsigned int rom = 0;
unsigned char *buf;
@@ -162,17 +255,17 @@ do_vgabios(void)
int i;
for (i=0x400; i<0x500; i++) {
printk_debug("%02x%c", *(unsigned char *)i,
i%16==15 ? '\n' : ' ');
//printk_debug("%02x%c", *(unsigned char *)i,
// i%16==15 ? '\n' : ' ');
*(unsigned char *) i = 0;
}
for (i=0x400; i<0x500; i++) {
/* for (i=0x400; i<0x500; i++) {
printk_debug("%02x%c", *(unsigned char *)i,
i%16==15 ? '\n' : ' ');
}
dev = pci_find_class(PCI_CLASS_DISPLAY_VGA <<8, NULL);
*/
dev = dev_find_class(PCI_CLASS_DISPLAY_VGA<<8 , 0);
if (! dev) {
printk_debug("NO VGA FOUND\n");
@@ -184,7 +277,7 @@ do_vgabios(void)
// Use VGA BIOS blob at specified address
rom = VGABIOS_START;
#else
pci_read_config32(dev, PCI_ROM_ADDRESS, &rom);
rom = pci_read_config32(dev, PCI_ROM_ADDRESS);
// paranoia
rom = 0xf0000000;
pci_write_config32(dev, PCI_ROM_ADDRESS, rom|1);
@@ -193,12 +286,28 @@ do_vgabios(void)
buf = (unsigned char *) rom;
if ((buf[0] == 0x55) && (buf[1] == 0xaa)) {
memcpy((void *) 0xc0000, buf, size);
#define VGABIOS_WRITE_PROTECT 1
#ifdef VGABIOS_WRITE_PROTECT
write_protect_vgabios();
#endif
for(i = 0; i < 16; i++)
printk_debug("0x%x ", buf[i]);
// check signature again
buf = (unsigned char *) 0xc0000;
if (buf[0]==0x55 && buf[1]==0xAA) {
busdevfn = (dev->bus->secondary << 8) | dev->path.u.pci.devfn;
printk_debug("bus/devfn = %#x\n", busdevfn);
real_mode_switch_call_vga(busdevfn);
//for( i = 0 ; i < 0x500; i++){
// printk_debug("%02x%c",*(unsigned char *)i,
// i%16 == 15 ? '\n':' ');
//}
} else
printk_debug("Failed to copy VGA BIOS to 0xc0000\n");
for(i = 0; i < 16; i++)
printk_debug("0x%x ", buf[i]);
// check signature here later!
busdevfn = (dev->bus->secondary << 8) | dev->devfn;
real_mode_switch_call_vga(busdevfn);
} else
printk_debug("BAD SIGNATURE 0x%x 0x%x\n", buf[0], buf[1]);
#ifndef VGABIOS_START
@@ -253,6 +362,10 @@ void callbiosint(void) {
__asm__ __volatile__ (
".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"
@@ -277,8 +390,8 @@ void callbiosint(void) {
" mov %ax, %ss \n"
" call biosint \n"
// back to real mode ...
" ljmp $0x28, $__rms_16bit\n"
"__rms_16bit: \n"
" ljmp $0x28, $__rms_16bit2\n"
"__rms_16bit2: \n"
".code16 \n" /* 16 bit code from here on... */
/* Load the segment registers w/ properly configured segment
@@ -297,8 +410,8 @@ void callbiosint(void) {
" movl %eax, %cr0 \n"
/* Now really going into real mode */
" ljmp $0, $__rms_real \n"
"__rms_real: \n"
" ljmp $0, $__rms_real2 \n"
"__rms_real2: \n"
/* Setup a stack */
" mov $0x0, %ax \n"
@@ -311,10 +424,16 @@ void callbiosint(void) {
" 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"
" popal\n"
" iret\n"
" pop %gs \n"
" pop %fs \n"
" pop %es \n"
" pop %ds \n"
" popal\n"
" iret\n"
".code32\n"
);
}
@@ -336,12 +455,26 @@ pcibios(
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,
@@ -393,8 +526,12 @@ biosint(
eax = 64 * 1024;
ret = 0;
break;
case 0x15:
ret=handleint21( &edi, &esi, &ebp, &esp,
&ebx, &edx, &ecx, &eax, &flags);
break;
default:
printk_info(__FUNCTION__ ": Unsupport int #0x%x\n",
printk_info("BIOSINT: Unsupport int #0x%x\n",
intnumber);
break;
}
@@ -491,7 +628,7 @@ pcibios(
unsigned short devid, vendorid, devfn;
short devindex; /* Use short to get rid of gabage in upper half of 32-bit register */
unsigned char bus;
struct pci_dev *dev;
device_t dev;
switch(func) {
case CHECK:
@@ -505,7 +642,7 @@ pcibios(
vendorid = *pedx;
devindex = *pesi;
dev = 0;
while ((dev = pci_find_device(vendorid, devid, dev))) {
while ((dev = dev_find_device(vendorid, devid, dev))) {
if (devindex <= 0)
break;
devindex--;
@@ -516,7 +653,7 @@ pcibios(
// busnum is an unsigned char;
// devfn is an int, so we mask it off.
busdevfn = (dev->bus->secondary << 8)
| (dev->devfn & 0xff);
| (dev->path.u.pci.devfn & 0xff);
printk_debug("0x%x: return 0x%x\n", func, busdevfn);
*pebx = busdevfn;
retval = 0;
@@ -541,7 +678,7 @@ pcibios(
devfn = *pebx & 0xff;
bus = *pebx >> 8;
reg = *pedi;
dev = pci_find_slot(bus, devfn);
dev = dev_find_slot(bus, devfn);
if (! dev) {
printk_debug("0x%x: BAD DEVICE bus %d devfn 0x%x\n", func, bus, devfn);
// idiots. the pcibios guys assumed you'd never pass a bad bus/devfn!
@@ -563,15 +700,15 @@ pcibios(
break;
case WRITECONFBYTE:
byte = *pecx;
write_config8(dev, reg, byte);
pci_write_config8(dev, reg, byte);
break;
case WRITECONFWORD:
word = *pecx;
write_config16(dev, reg, word);
pci_write_config16(dev, reg, word);
break;
case WRITECONFDWORD:
word = *pecx;
write_config32(dev, reg, dword);
dword = *pecx;
pci_write_config32(dev, reg, dword);
break;
}
@@ -590,31 +727,46 @@ pcibios(
return retval;
}
static void vga_init(struct chip *chip, enum chip_pass pass)
{
struct pc80_vgabios_config *conf =
(struct pc80_vgabios_config *)chip->chip_info;
switch (pass) {
case CONF_PASS_PRE_BOOT:
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;
switch(*eax&0xffff)
{
case 0x5f19:
break;
default:
/* nothing yet */
case 0x5f18:
*eax=0x5f;
*ebx=0x545; // MCLK = 133, 32M frame buffer, 256 M main memory
// *ebx = 0x515; // MCLK = 133, 32M frame buffer, 128 M main memory
*ecx=0x060;
res=0;
break;
case 0x5f00:
*eax = 0x8600;
break;
case 0x5f01:
*eax = 0x5f;
*ecx = (*ecx & 0xffffff00 ) | 2; // panel type = 2 = 1024 * 768
res = 0;
break;
case 0x5f02:
*eax=0x5f;
*ebx= (*ebx & 0xffff0000) | 2;
*ecx= (*ecx & 0xffff0000) | 0x401; // PAL + crt only
*edx= (*edx & 0xffff0000) | 0; // TV Layout - default
res=0;
break;
case 0x5f0f:
*eax=0x860f;
//*ebx=0;
//*ecx=0;
//*edx=0;
//res=0;
break;
}
return res;
}
static void enumerate(struct chip *chip)
{
/* don't really need to do anything */
}
struct chip_control southbridge_via_vt8231_control = {
.enumerate = enumerate,
.enable = vga_init,
.name = "Legacy VGA bios"
};