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authorBecky Bruce <becky.bruce@freescale.com>2008-10-27 16:09:42 -0500
committerAndrew Fleming-AFLEMING <afleming@freescale.com>2008-10-27 16:27:58 -0500
commitcd4251624205cb97104f6e32679dc7754934f711 (patch)
tree4135b28561bbedf8bd66615a7fa8c995a519071e /drivers/pci
parent219542a1a66ca017b12860920714a9859b18a5d7 (diff)
powerpc: fix pci window initialization to work with > 4GB DRAM
The existing code has a few errors that need to be fixed in order to support large RAM sizes. Fix those, and add a comment to make it clearer. Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Acked-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/fsl_pci_init.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/pci/fsl_pci_init.c b/drivers/pci/fsl_pci_init.c
index 483e06b4bee..7625cccec7e 100644
--- a/drivers/pci/fsl_pci_init.c
+++ b/drivers/pci/fsl_pci_init.c
@@ -87,16 +87,20 @@ int fsl_pci_setup_inbound_windows(struct pci_region *r)
}
#if defined(CONFIG_PHYS_64BIT) && defined(CONFIG_SYS_PCI_64BIT)
+ /*
+ * On 64-bit capable systems, set up a mapping for all of DRAM
+ * in high pci address space.
+ */
pci_sz = 1ull << __ilog2_u64(gd->ram_size);
/* round up to the next largest power of two */
if (gd->ram_size > pci_sz)
- sz = 1ull << (__ilog2_u64(gd->ram_size) + 1);
+ pci_sz = 1ull << (__ilog2_u64(gd->ram_size) + 1);
debug ("R64 bus_start: %llx phys_start: %llx size: %llx\n",
- (u64)CONFIG_SYS_PCI_MEMORY_BUS,
+ (u64)CONFIG_SYS_PCI64_MEMORY_BUS,
(u64)CONFIG_SYS_PCI_MEMORY_PHYS,
(u64)pci_sz);
pci_set_region(r++,
- CONFIG_SYS_PCI_MEMORY_BUS,
+ CONFIG_SYS_PCI64_MEMORY_BUS,
CONFIG_SYS_PCI_MEMORY_PHYS,
pci_sz,
PCI_REGION_MEM | PCI_REGION_MEMORY |