diff options
Diffstat (limited to 'src/southbridge/intel/i82801dx')
| -rw-r--r-- | src/southbridge/intel/i82801dx/i82801dx.h | 1 | ||||
| -rw-r--r-- | src/southbridge/intel/i82801dx/lpc.c | 46 |
2 files changed, 25 insertions, 22 deletions
diff --git a/src/southbridge/intel/i82801dx/i82801dx.h b/src/southbridge/intel/i82801dx/i82801dx.h index d9e4d3809d..2da77591f5 100644 --- a/src/southbridge/intel/i82801dx/i82801dx.h +++ b/src/southbridge/intel/i82801dx/i82801dx.h @@ -82,6 +82,7 @@ int smbus_read_byte(unsigned device, unsigned address); #define PMBASE_ADDR 0x0400 #define DEFAULT_PMBASE PMBASE_ADDR #define ACPI_CNTL 0x44 +#define ACPI_EN (1 << 4) #define BIOS_CNTL 0x4E #define GPIO_BASE 0x58 #define GPIO_CNTL 0x5C diff --git a/src/southbridge/intel/i82801dx/lpc.c b/src/southbridge/intel/i82801dx/lpc.c index fbf8e12228..0644569c71 100644 --- a/src/southbridge/intel/i82801dx/lpc.c +++ b/src/southbridge/intel/i82801dx/lpc.c @@ -36,37 +36,38 @@ typedef struct southbridge_intel_i82801dx_config config_t; -static void i82801dx_enable_ioapic(struct device *dev) +/** + * Enable ACPI I/O range. + * + * @param dev PCI device with ACPI and PM BAR's + */ +static void i82801dx_enable_acpi(struct device *dev) { - u32 reg32; - volatile u32 *ioapic_index = (volatile u32 *)(IO_APIC_ADDR); - volatile u32 *ioapic_data = (volatile u32 *)(IO_APIC_ADDR + 0x10); - /* Set ACPI base address (I/O space). */ pci_write_config32(dev, PMBASE, (PMBASE_ADDR | 1)); - /* Enable ACPI I/O and power management. */ - pci_write_config8(dev, ACPI_CNTL, 0x10); + /* 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 i82801dx_enable_ioapic(struct device *dev) +{ + u32 reg32; 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 */ + reg32 |= (1 << 13); /* Coprocessor error enable (COPR_ERR_EN) */ + reg32 |= (3 << 7); /* IOAPIC enable (APIC_EN) */ + reg32 |= (1 << 2); /* DMA collection buffer enable (DCB_EN) */ + reg32 |= (1 << 1); /* Delayed transaction enable (DTE) */ 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"); - - *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 i82801dx_enable_serial_irqs(struct device *dev) @@ -267,6 +268,7 @@ static void lpc_init(struct device *dev) /* Set the value for PCI command register. */ pci_write_config16(dev, PCI_COMMAND, 0x000f); + i82801dx_enable_acpi(dev); /* IO APIC initialization. */ i82801dx_enable_ioapic(dev); |