diff options
Diffstat (limited to 'src/southbridge')
| -rw-r--r-- | src/southbridge/intel/lynxpoint/lpc.c | 48 | ||||
| -rw-r--r-- | src/southbridge/intel/lynxpoint/pch.h | 1 |
2 files changed, 18 insertions, 31 deletions
diff --git a/src/southbridge/intel/lynxpoint/lpc.c b/src/southbridge/intel/lynxpoint/lpc.c index 40e04683ae..be685492e4 100644 --- a/src/southbridge/intel/lynxpoint/lpc.c +++ b/src/southbridge/intel/lynxpoint/lpc.c @@ -43,43 +43,29 @@ typedef struct southbridge_intel_lynxpoint_config config_t; -static void pch_enable_apic(struct device *dev) +/** + * Set miscellanous static southbridge features. + * + * @param dev PCI device with I/O APIC control registers + */ +static void pch_enable_ioapic(struct device *dev) { - int i; u32 reg32; - volatile u32 *ioapic_index = (volatile u32 *)(IO_APIC_ADDR); - volatile u32 *ioapic_data = (volatile u32 *)(IO_APIC_ADDR + 0x10); - /* Enable ACPI I/O and power management. - * Set SCI IRQ to IRQ9 - */ - pci_write_config8(dev, ACPI_CNTL, 0x80); + /* Enable ACPI I/O range decode */ + pci_write_config8(dev, ACPI_CNTL, ACPI_EN); - *ioapic_index = 0; - *ioapic_data = (2 << 24); + set_ioapic_id(IO_APIC_ADDR, 0x02); /* affirm full set of redirection table entries ("write once") */ - *ioapic_index = 1; - reg32 = *ioapic_data; - *ioapic_index = 1; - *ioapic_data = reg32; - - *ioapic_index = 0; - reg32 = *ioapic_data; - printk(BIOS_DEBUG, "Southbridge APIC ID = %x\n", (reg32 >> 24) & 0x0f); - if (reg32 != (1 << 25)) - die("APIC Error\n"); - - printk(BIOS_SPEW, "Dumping IOAPIC registers\n"); - for (i=0; i<3; i++) { - *ioapic_index = i; - printk(BIOS_SPEW, " reg 0x%04x:", i); - reg32 = *ioapic_data; - printk(BIOS_SPEW, " 0x%08x\n", reg32); - } + reg32 = io_apic_read(IO_APIC_ADDR, 0x01); + io_apic_write(IO_APIC_ADDR, 0x01, reg32); - *ioapic_index = 3; /* Select Boot Configuration register. */ - *ioapic_data = 1; /* Use Processor System Bus to deliver interrupts. */ + /* + * Select Boot Configuration register (0x03) and + * use Processor System Bus (0x01) to deliver interrupts. + */ + io_apic_write(IO_APIC_ADDR, 0x03, 0x01); } static void pch_enable_serial_irqs(struct device *dev) @@ -547,7 +533,7 @@ static void lpc_init(struct device *dev) pci_write_config16(dev, PCI_COMMAND, 0x000f); /* IO APIC initialization. */ - pch_enable_apic(dev); + pch_enable_ioapic(dev); pch_enable_serial_irqs(dev); diff --git a/src/southbridge/intel/lynxpoint/pch.h b/src/southbridge/intel/lynxpoint/pch.h index 21933b4660..c04957308f 100644 --- a/src/southbridge/intel/lynxpoint/pch.h +++ b/src/southbridge/intel/lynxpoint/pch.h @@ -236,6 +236,7 @@ unsigned get_gpios(const int *gpio_num_array); #define PMBASE 0x40 #define ACPI_CNTL 0x44 +#define ACPI_EN (1 << 7) #define BIOS_CNTL 0xDC #define GPIO_BASE 0x48 /* LPC GPIO Base Address Register */ #define GPIO_CNTL 0x4C /* LPC GPIO Control Register */ |