blob: 285782ed98655764f60ed59059fa8c0432bd0668 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
/*
* Copyright 2004 Tyan Computer
* by yhlu@tyan.com
*/
#if HT_CHAIN_END_UNITID_BASE < HT_CHAIN_UNITID_BASE
#define CK804_DEVN_BASE HT_CHAIN_END_UNITID_BASE
#else
#define CK804_DEVN_BASE HT_CHAIN_UNITID_BASE
#endif
static void ck804_enable_rom(void)
{
unsigned char byte;
device_t addr;
/* Enable 4MB rom access at 0xFFC00000 - 0xFFFFFFFF */
/* Locate the ck804 LPC */
addr = PCI_DEV(0, (CK804_DEVN_BASE+1), 0);
/* Set the 4MB enable bit bit */
byte = pci_read_config8(addr, 0x88);
byte |= 0x80;
pci_write_config8(addr, 0x88, byte);
}
|
