static void lpc_init(device_t dev)
{
u8 byte;
u32 dword;
device_t sm_dev;
/* Enable the LPC Controller */
sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0));
dword = pci_read_config32(sm_dev, 0x64);
dword |= 1 << 20;
pci_write_config32(sm_dev, 0x64, dword);
/* Initialize isa dma */
isa_dma_init();
/* RPR 7.2 Enable DMA transaction on the LPC bus */
byte = pci_read_config8(dev, 0x40);
byte |= (1 << 2);
pci_write_config8(dev, 0x40, byte);
/* RPR 7.3 Disable the timeout mechanism on LPC */
byte = pci_read_config8(dev, 0x48);
byte &= ~(1 << 7);
pci_write_config8(dev, 0x48, byte);
/* RPR 7.5 Disable LPC MSI Capability */
byte = pci_read_config8(dev, 0x78);
byte &= ~(1 << 1);
pci_write_config8(dev, 0x78, byte);
cmos_check_update_date();
}
static void lpc_init(device_t dev)
{
u8 byte;
u32 dword;
device_t sm_dev;
/* Enable the LPC Controller */
sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0));
dword = pci_read_config32(sm_dev, 0x64);
dword |= 1 << 20;
pci_write_config32(sm_dev, 0x64, dword);
/* Initialize isa dma */
isa_dma_init();
/* Enable DMA transaction on the LPC bus */
byte = pci_read_config8(dev, 0x40);
byte |= (1 << 2);
pci_write_config8(dev, 0x40, byte);
/* Disable the timeout mechanism on LPC */
byte = pci_read_config8(dev, 0x48);
byte &= ~(1 << 7);
pci_write_config8(dev, 0x48, byte);
/* Disable LPC MSI Capability */
byte = pci_read_config8(dev, 0x78);
byte &= ~(1 << 1);
byte &= ~(1 << 0); /* Keep the old way. i.e., when bus master/DMA cycle is going
on on LPC, it holds PCI grant, so no LPC slave cycle can
interrupt and visit LPC. */
pci_write_config8(dev, 0x78, byte);
/* bit0: Enable prefetch a cacheline (64 bytes) when Host reads code from SPI ROM */
/* bit3: Fix SPI_CS# timing issue when running at 66M. TODO:A12. */
byte = pci_read_config8(dev, 0xBB);
byte |= 1 << 0 | 1 << 3;
pci_write_config8(dev, 0xBB, byte);
cmos_check_update_date();
/* Initialize the real time clock.
* The 0 argument tells cmos_init not to
* update CMOS unless it is invalid.
* 1 tells cmos_init to always initialize the CMOS.
*/
cmos_init(0);
/* Initialize i8259 pic */
setup_i8259 ();
/* Initialize i8254 timers */
setup_i8254 ();
}
static void lpc_init(device_t dev)
{
printk(BIOS_DEBUG, "SB700 - Late.c - lpc_init - Start.\n");
cmos_check_update_date();
/* Initialize the real time clock.
* The 0 argument tells cmos_init not to
* update CMOS unless it is invalid.
* 1 tells cmos_init to always initialize the CMOS.
*/
cmos_init(0);
setup_i8259(); /* Initialize i8259 pic */
setup_i8254(); /* Initialize i8254 timers */
printk(BIOS_DEBUG, "SB700 - Late.c - lpc_init - End.\n");
}
static void rtc_init(void)
{
int rtc_fail;
const struct chipset_power_state *ps = cbmem_find(CBMEM_ID_POWER_STATE);
if (!ps) {
printk(BIOS_ERR, "Could not find power state in cbmem, RTC init aborted\n");
return;
}
rtc_fail = !!(ps->gen_pmcon1 & RPS);
/* Ensure the date is set including century byte. */
cmos_check_update_date();
if (IS_ENABLED(CONFIG_VBOOT_VBNV_CMOS))
init_vbnv_cmos(rtc_fail);
else
cmos_init(rtc_fail);
}
static void pch_rtc_init(void)
{
u8 reg8;
int rtc_failed;
/*PMC Controller Device 0x1F, Func 02*/
device_t dev = PCH_DEV_PMC;
reg8 = pci_read_config8(dev, GEN_PMCON_B);
rtc_failed = reg8 & RTC_BATTERY_DEAD;
if (rtc_failed) {
reg8 &= ~RTC_BATTERY_DEAD;
pci_write_config8(dev, GEN_PMCON_B, reg8);
printk(BIOS_DEBUG, "rtc_failed = 0x%x\n", rtc_failed);
}
/* Ensure the date is set including century byte. */
cmos_check_update_date();
if (IS_ENABLED(CONFIG_VBOOT_VBNV_CMOS))
init_vbnv_cmos(rtc_failed);
else
cmos_init(rtc_failed);
}
