From: Becky Bruce becky.bruce@freescale.com
The current code will cause the creation of a 4GB window starting at 0 if we have more than 4GB of RAM installed, which overlaps with PCI_MEM space and causes pci_bus_to_phys() to return erroneous information. Limit the size to 4GB - 1; which causes the code to create one 2GB and one 1GB window instead.
Signed-off-by: Becky Bruce beckyb@kernel.crashing.org Signed-off-by: Kumar Gala galak@kernel.crashing.org --- drivers/pci/fsl_pci_init.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/pci/fsl_pci_init.c b/drivers/pci/fsl_pci_init.c index 7625ccc..e57acba 100644 --- a/drivers/pci/fsl_pci_init.c +++ b/drivers/pci/fsl_pci_init.c @@ -58,7 +58,7 @@ void pciauto_config_init(struct pci_controller *hose); int fsl_pci_setup_inbound_windows(struct pci_region *r) { struct pci_region *rgn_base = r; - u64 sz = min((u64)gd->ram_size, 1ull << 32); + u64 sz = min((u64)gd->ram_size, (1ull << 32) - 1);
phys_addr_t phys_start = CONFIG_SYS_PCI_MEMORY_PHYS; pci_addr_t bus_start = CONFIG_SYS_PCI_MEMORY_BUS;