SDRAM doesn't always start at 0. Adjust the region mapping so that it works on platforms where SDRAM is somewhere else.
This needs testing on other platforms.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v4: None Changes in v3: None Changes in v2: - Rename 'addr' to 'size' - Correct logic for use of gd->pci_ram_top
drivers/pci/pci-uclass.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c index 1d93194..6d860c4 100644 --- a/drivers/pci/pci-uclass.c +++ b/drivers/pci/pci-uclass.c @@ -680,8 +680,8 @@ static int decode_regions(struct pci_controller *hose, const void *blob, int parent_node, int node) { int pci_addr_cells, addr_cells, size_cells; + phys_addr_t base = 0, size; int cells_per_record; - phys_addr_t addr; const u32 *prop; int len; int i; @@ -732,11 +732,14 @@ static int decode_regions(struct pci_controller *hose, const void *blob, }
/* Add a region for our local memory */ - addr = gd->ram_size; - if (gd->pci_ram_top && gd->pci_ram_top < addr) - addr = gd->pci_ram_top; - pci_set_region(hose->regions + hose->region_count++, 0, 0, addr, - PCI_REGION_MEM | PCI_REGION_SYS_MEMORY); + size = gd->ram_size; +#ifdef CONFIG_SYS_SDRAM_BASE + base = CONFIG_SYS_SDRAM_BASE; +#endif + if (gd->pci_ram_top && gd->pci_ram_top < base + size) + size = gd->pci_ram_top - base; + pci_set_region(hose->regions + hose->region_count++, base, base, + size, PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
return 0; }