diff options
Diffstat (limited to 'board/emulation/qemu-ppce500/qemu-ppce500.c')
| -rw-r--r-- | board/emulation/qemu-ppce500/qemu-ppce500.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/board/emulation/qemu-ppce500/qemu-ppce500.c b/board/emulation/qemu-ppce500/qemu-ppce500.c index daa103c5646..924cc02c4be 100644 --- a/board/emulation/qemu-ppce500/qemu-ppce500.c +++ b/board/emulation/qemu-ppce500/qemu-ppce500.c @@ -14,6 +14,8 @@ #include <net.h> #include <pci.h> #include <time.h> +#include <dm/simple_bus.h> +#include <dm/uclass-internal.h> #include <asm/global_data.h> #include <asm/processor.h> #include <asm/mmu.h> @@ -109,6 +111,17 @@ static int pci_map_region(phys_addr_t paddr, phys_size_t size, ulong *pmap_addr) return 0; } +static void platform_bus_map_region(ulong map_addr, phys_addr_t paddr, + phys_size_t size) +{ + /* Align map_addr */ + map_addr += size - 1; + map_addr &= ~(size - 1); + + /* Map virtual memory for range */ + assert(!tlb_map_range(map_addr, paddr, size, TLB_MAP_IO)); +} + int misc_init_r(void) { struct udevice *dev; @@ -148,6 +161,22 @@ int misc_init_r(void) */ disable_tlb(find_tlb_idx((void *)CONFIG_SYS_TMPVIRT, 1)); + /* + * Detect the presence of the platform bus node, and + * create a virtual memory mapping for it. + */ + for (ret = uclass_find_first_device(UCLASS_SIMPLE_BUS, &dev); + dev; + ret = uclass_find_next_device(&dev)) { + if (device_is_compatible(dev, "qemu,platform")) { + struct simple_bus_plat *plat = dev_get_uclass_plat(dev); + + platform_bus_map_region(CONFIG_PLATFORM_BUS_MAP_ADDR, + plat->target, plat->size); + break; + } + } + return 0; } |