New patch to review for coreboot: 37ab40c Intel Sandybridge and UMA: use mmio_resource()

[Kyösti Mälkki]

Kyösti Mälkki ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/1373

-gerrit

commit 37ab40cbfaf4165a7181ed3d1780f6e641f63dd2
Author: Kyösti Mälkki 
Date:   Fri Jul 27 13:12:03 2012 +0300

Intel Sandybridge and UMA: use mmio_resource()

With SandyBridge northbridge code, uma_memory_size was reset to
    zero before variable MTRRs were set. This mean MTRR setup routine
    did not previously create a un-cacheable hole.

This may not be optimal setup in the number of used MTRRs, but
    continue with this model until MTRR setup is better.

Change-Id: I63c8df19ad6b6350d46a3eca3055abf684b8b114
    Signed-off-by: Kyösti Mälkki 
---
 src/northbridge/intel/sandybridge/northbridge.c |   16 +++++-----------
 1 files changed, 5 insertions(+), 11 deletions(-)

diff --git a/src/northbridge/intel/sandybridge/northbridge.c b/src/northbridge/intel/sandybridge/northbridge.c
index 0df85a7..5a9388e 100644
--- a/src/northbridge/intel/sandybridge/northbridge.c
+++ b/src/northbridge/intel/sandybridge/northbridge.c
@@ -111,17 +111,11 @@ static void add_fixed_resources(struct device *dev, int index)
    struct resource *resource;
    u32 pcie_config_base, pcie_config_size;

-	printk(BIOS_DEBUG, "Adding UMA memory area base=0x%llx "
-	       "size=0x%llx\n", uma_memory_base, uma_memory_size);
-	resource = new_resource(dev, index++);
-	resource->base = (resource_t) uma_memory_base;
-	resource->size = (resource_t) uma_memory_size;
-	resource->flags = IORESOURCE_MEM | IORESOURCE_RESERVE |
-	    IORESOURCE_FIXED | IORESOURCE_STORED | IORESOURCE_ASSIGNED;
-
-	/* Clear these values here so they don't get used by MTRR code */
-	uma_memory_base = 0;
-	uma_memory_size = 0;
+	/* Using uma_resource() here would fail, as base & size cannot
+	 * be used as-is for a single MTRR. Use separate resources after
+	 * MTRR code is fixed to merge them wisely. 
+	 */
+	mmio_resource(dev, index++, uma_memory_base >> 10, uma_memory_size >> 10);

if (get_pcie_bar(&pcie_config_base, &pcie_config_size)) {
    	printk(BIOS_DEBUG, "Adding PCIe config bar base=0x%08x "