1 #include <console/console.h>
2 #include <device/device.h>
3 #include <device/pci.h>
4 #include <device/pci_ids.h>
5 #include <device/pci_ops.h>
7 #include <pc80/mc146818rtc.h>
9 #include "../southbridge/amd/cs5536/cs5536_smbus2.h"
11 /* Borrowed from mc146818rtc.c */
13 #define CMOS_READ(addr) ({ \
14 outb((addr),RTC_PORT(0)); \
18 #define CMOS_WRITE(val, addr) ({ \
19 outb((addr),RTC_PORT(0)); \
20 outb((val),RTC_PORT(1)); \
23 static void write_bit(unsigned char val) {
25 unsigned char byte = CMOS_READ(440 / 8);
27 /* Don't change it if its already set */
29 if ((byte & 1) == (val & 1))
34 CMOS_WRITE(val, 440/8);
37 static unsigned short _getsmbusbase(void) {
38 unsigned devfn = PCI_DEVFN(0xf, 0);
39 device_t dev = dev_find_slot(0x0, devfn);
40 unsigned long addr = pci_read_config32(dev, PCI_BASE_ADDRESS_0);
42 return (unsigned short) (addr & ~1);
45 static void init_dcon(void) {
48 unsigned short rev = 0;
49 unsigned short iobase = _getsmbusbase();
51 printk_debug("CHECKING FOR DCON (%x)\n", iobase);
53 /* Get the IO base for the SMBUS */
55 rev = do_smbus_read_word(iobase, 0x0D << 1, 0x00);
58 printk_debug("DCON FOUND - REV %x\n", rev);
61 ret = do_smbus_write_word(iobase, 0x0D << 1, 0x01, 0x0069);
63 printk_debug("DCON ENABLE FAILED\n", ret);
66 printk_debug("DCON NOT FOUND (%x)\n", rev);
68 write_bit(rev > 0 ? 1 : 0);
71 static void init(struct device *dev) {
74 unsigned devfn = PCI_DEVFN(0xf, 4);
76 unsigned char usbirq = 0xa;
79 printk_debug("OLPC REVA ENTER %s\n", __func__);
82 /* I can't think of any reason NOT to just set this. If it turns out we want this to be
83 * conditional we can make it a config variable later.
86 printk_debug("%s (%x,%x)SET USB PCI interrupt line to %d\n",
87 __func__, bus, devfn, usbirq);
88 usb = dev_find_slot(bus, devfn);
90 printk_err("Could not find USB\n");
92 pci_write_config8(usb, PCI_INTERRUPT_LINE, usbirq);
97 printk_debug("OLPC REVA EXIT %s\n", __func__);
100 static void enable_dev(struct device *dev)
102 dev->ops->init = init;
105 struct chip_operations mainboard_ops = {
106 CHIP_NAME("OLPC rev_a Mainboard")
107 .enable_dev = enable_dev,