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-rw-r--r--src/southbridge/intel/i82801gx/lpc.c20
1 files changed, 18 insertions, 2 deletions
diff --git a/src/southbridge/intel/i82801gx/lpc.c b/src/southbridge/intel/i82801gx/lpc.c
index 31ea130b51..bf61855260 100644
--- a/src/southbridge/intel/i82801gx/lpc.c
+++ b/src/southbridge/intel/i82801gx/lpc.c
@@ -579,18 +579,20 @@ void acpi_fill_fadt(acpi_fadt_t * fadt)
static void i82801gx_lpc_read_resources(device_t dev)
{
struct resource *res;
+ u8 io_index = 0;
+ int i;
/* Get the normal PCI resources of this device. */
pci_dev_read_resources(dev);
/* Add an extra subtractive resource for both memory and I/O. */
- res = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 0));
+ res = new_resource(dev, IOINDEX_SUBTRACTIVE(io_index++, 0));
res->base = 0;
res->size = 0x1000;
res->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE |
IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
- res = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0));
+ res = new_resource(dev, IOINDEX_SUBTRACTIVE(io_index++, 0));
res->base = 0xff800000;
res->size = 0x00800000; /* 8 MB for flash */
res->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE |
@@ -600,6 +602,20 @@ static void i82801gx_lpc_read_resources(device_t dev)
res->base = IO_APIC_ADDR;
res->size = 0x00001000;
res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
+
+ /* Set IO decode ranges if required.*/
+ for (i = 0; i < 4; i++) {
+ u32 gen_dec;
+ gen_dec = pci_read_config32(dev, 0x84 + 4 * i);
+
+ if ((gen_dec & 0xFFFC) > 0x1000) {
+ res = new_resource(dev, IOINDEX_SUBTRACTIVE(io_index++, 0));
+ res->base = gen_dec & 0xFFFC;
+ res->size = (gen_dec >> 16) & 0xFC;
+ res->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE |
+ IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
+ }
+ }
}
static void set_subsystem(device_t dev, unsigned vendor, unsigned device)