diff options
Diffstat (limited to 'src/southbridge/intel/i82801bx/lpc.c')
| -rw-r--r-- | src/southbridge/intel/i82801bx/lpc.c | 39 |
1 files changed, 21 insertions, 18 deletions
diff --git a/src/southbridge/intel/i82801bx/lpc.c b/src/southbridge/intel/i82801bx/lpc.c index 0ff44e6054..0533afbdae 100644 --- a/src/southbridge/intel/i82801bx/lpc.c +++ b/src/southbridge/intel/i82801bx/lpc.c @@ -72,17 +72,29 @@ typedef struct southbridge_intel_i82801bx_config config_t; * Use the defined IRQ values above or set mainboard * specific IRQ values in your devicetree.cb. */ -static void i82801bx_enable_apic(struct device *dev) -{ - uint32_t reg32; - volatile uint32_t *ioapic_index = (volatile uint32_t *)IO_APIC_ADDR; - volatile uint32_t *ioapic_data = (volatile uint32_t *)(IO_APIC_ADDR + 0x10); +/** + * Enable ACPI I/O range. + * + * @param dev PCI device with ACPI and PM BAR's + */ +static void i82801bx_enable_acpi(struct device *dev) +{ /* Set ACPI base address (I/O space). */ pci_write_config32(dev, PMBASE, (PMBASE_ADDR | 1)); /* Enable ACPI I/O range decode and ACPI power management. */ pci_write_config8(dev, ACPI_CNTL, ACPI_EN); +} + +/** + * Set miscellanous static southbridge features. + * + * @param dev PCI device with I/O APIC control registers + */ +static void i82801bx_enable_ioapic(struct device *dev) +{ + u32 reg32; reg32 = pci_read_config32(dev, GEN_CNTL); reg32 |= (1 << 13); /* Coprocessor error enable (COPR_ERR_EN) */ @@ -92,18 +104,7 @@ static void i82801bx_enable_apic(struct device *dev) pci_write_config32(dev, GEN_CNTL, reg32); printk(BIOS_DEBUG, "IOAPIC Southbridge enabled %x\n", reg32); - *ioapic_index = 0; - *ioapic_data = (1 << 25); - - *ioapic_index = 0; - reg32 = *ioapic_data; - printk(BIOS_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. */ + set_ioapic_id(IO_APIC_ADDR, 0x02); } static void i82801bx_enable_serial_irqs(struct device *dev) @@ -237,8 +238,10 @@ static void lpc_init(struct device *dev) /* Set the value for PCI command register. */ pci_write_config16(dev, PCI_COMMAND, 0x000f); + i82801bx_enable_acpi(dev); + /* IO APIC initialization. */ - i82801bx_enable_apic(dev); + i82801bx_enable_ioapic(dev); i82801bx_enable_serial_irqs(dev); |