Vladimir Serbinenko (phcoder@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/7662
-gerrit
commit 93654e80c9c2e2a73a77d6b5cc0ce60d50a82d65 Author: Vladimir Serbinenko phcoder@gmail.com Date: Mon Nov 24 21:05:56 2014 +0100
i82801gx: Reserve LPC decodes.
This change makes sure that LPC controller declares resources that it actually decodes. bd82x6x already does it but i82801gx doesn't leading to allocator potentially allocating something else to the same range.
Change-Id: Ieca9852e54c08e31d4d41aea97f317d9a6919806 Signed-off-by: Vladimir Serbinenko phcoder@gmail.com --- src/southbridge/intel/i82801gx/lpc.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-)
diff --git a/src/southbridge/intel/i82801gx/lpc.c b/src/southbridge/intel/i82801gx/lpc.c index 9dbb3ec..6466038 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)