From: Andrew Bradford andrew.bradford@kodakalaris.com
Baytrail physically maps the first 2 GB of SDRAM from 0x0 to 0x7FFFFFFF and additional SDRAM is mapped from 0x100000000 and up. There is a physical memory hole from 0x80000000 to 0xFFFFFFFF for other uses. Because of this, PCI region 3 should only try to use up to the amount of SDRAM or 0x80000000, which ever is less.
Signed-off-by: Andrew Bradford andrew.bradford@kodakalaris.com --- v2: limit maximum size to lesser of SDRAM or 0x80000000 --- arch/x86/cpu/baytrail/pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/cpu/baytrail/pci.c b/arch/x86/cpu/baytrail/pci.c index 6c291f9..53475e8 100644 --- a/arch/x86/cpu/baytrail/pci.c +++ b/arch/x86/cpu/baytrail/pci.c @@ -39,7 +39,7 @@ void board_pci_setup_hose(struct pci_controller *hose) pci_set_region(hose->regions + 3, 0, 0, - gd->ram_size, + gd->ram_size < 0x80000000 ? gd->ram_size : 0x80000000;, PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
hose->region_count = 4;