static void sb900_enable_rom(void)
{
u32 word;
u32 dword;
device_t dev;
dev = PCI_DEV(0, 0x14, 0x03);
/* SB900 LPC Bridge 0:20:3:44h.
* BIT6: Port Enable for serial port 0x3f8-0x3ff
* BIT29: Port Enable for KBC port 0x60 and 0x64
* BIT30: Port Enable for ACPI Micro-Controller port 0x66 and 0x62
*/
dword = pci_io_read_config32(dev, 0x44);
//dword |= (1<<6) | (1<<29) | (1<<30) ;
/*Turn on all of LPC IO Port decode enable */
dword = 0xffffffff;
pci_io_write_config32(dev, 0x44, dword);
/* SB900 LPC Bridge 0:20:3:48h.
* BIT0: Port Enable for SuperIO 0x2E-0x2F
* BIT1: Port Enable for SuperIO 0x4E-0x4F
* BIT4: Port Enable for LPC ROM Address Arrage2 (0x68-0x6C)
* BIT6: Port Enable for RTC IO 0x70-0x73
* BIT21: Port Enable for Port 0x80
*/
dword = pci_io_read_config32(dev, 0x48);
dword |= (1<<0) | (1<<1) | (1<<4) | (1<<6) | (1<<21) ;
pci_io_write_config32(dev, 0x48, dword);
/* Enable 4MB rom access at 0xFFE00000 - 0xFFFFFFFF */
/* Set the 4MB enable bits */
word = pci_io_read_config16(dev, 0x6c);
word = 0xFFC0;
pci_io_write_config16(dev, 0x6c, word);
}
/*
* check for a warm reset and do a hard reset instead.
*/
static void check_for_warm_reset(void)
{
/*
* Check if INIT# is asserted by port 0xCF9 and whether RCBA has been set.
* If either is true, then this is a warm reset so execute a Hard Reset
*/
if ( (inb(0xcf9) == 0x04) ||
(pci_io_read_config32(SOC_LPC_DEV, RCBA) & RCBA_ENABLE) ) {
outb(0x00, 0xcf9);
outb(0x06, 0xcf9);
}
}