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#define ASSEMBLY 1
#include <stdint.h>
#include <device/pci_def.h>
#include <cpu/p6/apic.h>
#include <arch/io.h>
#include <device/pnp_def.h>
#include <arch/romcc_io.h>
#include <arch/hlt.h>
#include "pc80/serial.c"
#include "arch/i386/lib/console.c"
#include "ram/ramtest.c"
#include "northbridge/via/vt8601/raminit.h"
#include "cpu/p6/earlymtrr.c"
/*
*/
void udelay(int usecs)
{
int i;
for(i = 0; i < usecs; i++)
outb(i&0xff, 0x80);
}
#include "lib/delay.c"
#include "cpu/p6/boot_cpu.c"
#include "debug.c"
#include "southbridge/via/vt8231/vt8231_early_smbus.c"
#include "southbridge/via/vt8231/vt8231_early_serial.c"
static void memreset_setup(void)
{
}
/*
static void memreset(int controllers, const struct mem_controller *ctrl)
{
}
*/
static inline int spd_read_byte(unsigned device, unsigned address)
{
unsigned char c;
c = smbus_read_byte(device, address);
return c;
}
#include "northbridge/via/vt8601/raminit.c"
/*
#include "sdram/generic_sdram.c"
*/
static void enable_mainboard_devices(void)
{
device_t dev;
/* dev 0 for southbridge */
dev = pci_locate_device(PCI_ID(0x1106,0x8231), 0);
if (dev == PCI_DEV_INVALID) {
die("Southbridge not found!!!\n");
}
pci_write_config8(dev, 0x50, 7);
pci_write_config8(dev, 0x51, 0xff);
#if 0
// This early setup switches IDE into compatibility mode before PCI gets
// // a chance to assign I/Os
// movl $CONFIG_ADDR(0, 0x89, 0x42), %eax
// // movb $0x09, %dl
// movb $0x00, %dl
// PCI_WRITE_CONFIG_BYTE
//
#endif
/* we do this here as in V2, we can not yet do raw operations
* to pci!
*/
dev += 0x100; /* ICKY */
pci_write_config8(dev, 0x42, 0);
}
static void enable_shadow_ram(void)
{
device_t dev = 0; /* no need to look up 0:0.0 */
unsigned char shadowreg;
/* dev 0 for southbridge */
shadowreg = pci_read_config8(dev, 0x63);
/* 0xf0000-0xfffff */
shadowreg |= 0x30;
pci_write_config8(dev, 0x63, shadowreg);
}
static void main(void)
{
unsigned long x;
/* init_timer();*/
outb(5, 0x80);
enable_vt8231_serial();
uart_init();
console_init();
enable_mainboard_devices();
enable_smbus();
enable_shadow_ram();
/*
memreset_setup();
this is way more generic than we need.
sdram_initialize(sizeof(cpu)/sizeof(cpu[0]), cpu);
*/
sdram_set_registers((const struct mem_controller *) 0);
sdram_set_spd_registers((const struct mem_controller *) 0);
sdram_enable(0, (const struct mem_controller *) 0);
/* Check all of memory */
#if 0
ram_check(0x00000000, msr.lo);
#endif
#if 0
static const struct {
unsigned long lo, hi;
} check_addrs[] = {
/* Check 16MB of memory @ 0*/
{ 0x00000000, 0x01000000 },
#if TOTAL_CPUS > 1
/* Check 16MB of memory @ 2GB */
{ 0x80000000, 0x81000000 },
#endif
};
int i;
for(i = 0; i < sizeof(check_addrs)/sizeof(check_addrs[0]); i++) {
ram_check(check_addrs[i].lo, check_addrs[i].hi);
}
#endif
early_mtrr_init();
}
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