diff options
| author | Sven Schnelle <svens@stackframe.org> | 2012-02-01 11:47:29 +0100 |
|---|---|---|
| committer | Sven Schnelle <svens@stackframe.org> | 2012-02-02 16:01:47 +0100 |
| commit | b06bd8d9542513d87c62e494d3ca8012264b2878 (patch) | |
| tree | 77a6e240f305c1ac1bd4e145feb90aee821a9f6a /src/southbridge/intel/i3100/lpc.c | |
| parent | 317ca0d75190cdda385cca327991b72f14e9667f (diff) | |
i3100: configure pci irqs
without it, you can't boot from PCI devices like scsi controllers
which require an interrupt set. So preconfigure all pci devices.
Change-Id: I2cd781227701e8363d83bd90e0e36994359fc194
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/603
Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/southbridge/intel/i3100/lpc.c')
| -rw-r--r-- | src/southbridge/intel/i3100/lpc.c | 46 |
1 files changed, 42 insertions, 4 deletions
diff --git a/src/southbridge/intel/i3100/lpc.c b/src/southbridge/intel/i3100/lpc.c index 1544ecd44f..2dcdb04825 100644 --- a/src/southbridge/intel/i3100/lpc.c +++ b/src/southbridge/intel/i3100/lpc.c @@ -28,6 +28,7 @@ #include <device/pci_ops.h> #include <pc80/mc146818rtc.h> #include <pc80/isa-dma.h> +#include <pc80/i8259.h> #include <arch/io.h> #include <arch/ioapic.h> #include "i3100.h" @@ -196,17 +197,51 @@ static void set_i3100_gpio_inv( static void i3100_pirq_init(device_t dev) { + device_t irq_dev; config_t *config; /* Get the chip configuration */ config = dev->chip_info; - if(config->pirq_a_d) { + if(config->pirq_a_d) pci_write_config32(dev, 0x60, config->pirq_a_d); - } - if(config->pirq_e_h) { + + if(config->pirq_e_h) pci_write_config32(dev, 0x68, config->pirq_e_h); - } + + for(irq_dev = all_devices; irq_dev; irq_dev = irq_dev->next) { + u8 int_pin=0, int_line=0; + + if (!irq_dev->enabled || irq_dev->path.type != DEVICE_PATH_PCI) + continue; + + int_pin = pci_read_config8(irq_dev, PCI_INTERRUPT_PIN); + switch (int_pin) { + case 1: /* INTA# */ + int_line = config->pirq_a_d & 0xff; + break; + + case 2: /* INTB# */ + int_line = (config->pirq_a_d >> 8) & 0xff; + break; + + case 3: /* INTC# */ + int_line = (config->pirq_a_d >> 16) & 0xff; + break; + + case 4: /* INTD# */ + int_line = (config->pirq_a_d >> 24) & 0xff; + break; + } + + if (!int_line) + continue; + + printk(BIOS_DEBUG, "%s: irq pin %d, irq line %d\n", dev_path(irq_dev), int_pin, int_line); + pci_write_config8(irq_dev, PCI_INTERRUPT_LINE, int_line); + } + + } static void i3100_power_options(device_t dev) { @@ -343,6 +378,9 @@ static void lpc_init(struct device *dev) /* Initialize isa dma */ isa_dma_init(); + + setup_i8259(); + i8259_configure_irq_trigger(9, 1); } static void i3100_lpc_read_resources(device_t dev) |