OK, I have a new booting problem. LB dies on the
i82801xx_enable_ioapic() function in 82801xx_lpc.c:
void i82801xx_enable_ioapic(struct device *dev)
{
uint32_t reg32;
volatile uint32_t *ioapic_index = (volatile uint32_t *)0xfec00000;
volatile uint32_t *ioapic_data = (volatile uint32_t *)0xfec00010;
reg32 = pci_read_config32(dev, GEN_CNTL);
reg32 |= (3 << 7); /* Enable IOAPIC */
reg32 |= (1 << 13); /* Coprocessor error enable */
reg32 |= (1 << 1); /* Delayed transaction enable */
reg32 |= (1 << 2); /* DMA collection buffer enable */
pci_write_config32(dev, GEN_CNTL, reg32);
printk_debug("IOAPIC Southbridge enabled %x\n", reg32);
*ioapic_index = 0;
*ioapic_data = (1 << 25);
*ioapic_index = 0;
reg32 = *ioapic_data;
printk_debug("Southbridge APIC ID = %x\n", reg32);
if (reg32 != (1 << 25))
die("APIC Error\n");
/* TODO: From i82801ca, needed/useful on other ICH? */
*ioapic_index = 3; // Select Boot Configuration register
*ioapic_data = 1; // Use Processor System Bus to deliver
interrupts
}
Initializing devices...
Root Device init
PCI: 00:00.0 init
Northbridge init
PCI: 00:1d.0 init
PCI: 00:1d.1 init
PCI: 00:1d.2 init
PCI: 00:1d.7 init
EHCI: Setting up controller.. done.
PCI: 00:1e.0 init
PCI: 00:1f.0 init
IOAPIC Southbridge enabled 2186
Southbridge APIC ID = 0
APIC Error
What is going on here? Why is *ioapic_data coming back as 0x0 after it
has been set to 0x2000000 (1 << 25)? Help?
Thanks - Joe
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