From cd4251624205cb97104f6e32679dc7754934f711 Mon Sep 17 00:00:00 2001 From: Becky Bruce Date: Mon, 27 Oct 2008 16:09:42 -0500 Subject: [PATCH] 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 Acked-by: Kumar Gala --- drivers/pci/fsl_pci_init.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/pci/fsl_pci_init.c b/drivers/pci/fsl_pci_init.c index 483e06b4be..7625cccec7 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 | -- 2.39.5