diff options
| -rw-r--r-- | arch/x86/cpu/cpu.c | 2 | ||||
| -rw-r--r-- | drivers/pci/pci-uclass.c | 8 | ||||
| -rw-r--r-- | include/asm-generic/global_data.h | 1 |
3 files changed, 9 insertions, 2 deletions
diff --git a/arch/x86/cpu/cpu.c b/arch/x86/cpu/cpu.c index 9afdafb17e..af927b94e0 100644 --- a/arch/x86/cpu/cpu.c +++ b/arch/x86/cpu/cpu.c @@ -353,6 +353,8 @@ int x86_cpu_init_f(void) gd->arch.has_mtrr = has_mtrr(); } + /* Don't allow PCI region 3 to use memory in the 2-4GB memory hole */ + gd->pci_ram_top = 0x80000000U; /* Configure fixed range MTRRs for some legacy regions */ if (gd->arch.has_mtrr) { diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c index edec93f9a4..5b91fe3dce 100644 --- a/drivers/pci/pci-uclass.c +++ b/drivers/pci/pci-uclass.c @@ -444,6 +444,7 @@ static int decode_regions(struct pci_controller *hose, const void *blob, { int pci_addr_cells, addr_cells, size_cells; int cells_per_record; + phys_addr_t addr; const u32 *prop; int len; int i; @@ -494,8 +495,11 @@ static int decode_regions(struct pci_controller *hose, const void *blob, } /* Add a region for our local memory */ - pci_set_region(hose->regions + hose->region_count++, 0, 0, - gd->ram_size, PCI_REGION_MEM | PCI_REGION_SYS_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); return 0; } diff --git a/include/asm-generic/global_data.h b/include/asm-generic/global_data.h index 6747619b1c..db0550b67c 100644 --- a/include/asm-generic/global_data.h +++ b/include/asm-generic/global_data.h @@ -93,6 +93,7 @@ typedef struct global_data { #endif #ifdef CONFIG_PCI struct pci_controller *hose; /* PCI hose for early use */ + phys_addr_t pci_ram_top; /* top of region accessible to PCI */ #endif #ifdef CONFIG_PCI_BOOTDELAY int pcidelay_done; |
