diff options
Diffstat (limited to 'drivers/core/simple-bus.c')
| -rw-r--r-- | drivers/core/simple-bus.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/core/simple-bus.c b/drivers/core/simple-bus.c index 3ea4d82..913c3cc 100644 --- a/drivers/core/simple-bus.c +++ b/drivers/core/simple-bus.c @@ -10,8 +10,37 @@ DECLARE_GLOBAL_DATA_PTR; +struct simple_bus_plat { + u32 base; + u32 size; + u32 target; +}; + +fdt_addr_t simple_bus_translate(struct udevice *dev, fdt_addr_t addr) +{ + struct simple_bus_plat *plat = dev_get_uclass_platdata(dev); + + if (addr >= plat->base && addr < plat->base + plat->size) + addr = (addr - plat->base) + plat->target; + + return addr; +} + static int simple_bus_post_bind(struct udevice *dev) { + u32 cell[3]; + int ret; + + ret = fdtdec_get_int_array(gd->fdt_blob, dev->of_offset, "ranges", + cell, ARRAY_SIZE(cell)); + if (!ret) { + struct simple_bus_plat *plat = dev_get_uclass_platdata(dev); + + plat->base = cell[0]; + plat->target = cell[1]; + plat->size = cell[2]; + } + return dm_scan_fdt_node(dev, gd->fdt_blob, dev->of_offset, false); } @@ -19,6 +48,7 @@ UCLASS_DRIVER(simple_bus) = { .id = UCLASS_SIMPLE_BUS, .name = "simple_bus", .post_bind = simple_bus_post_bind, + .per_device_platdata_auto_alloc_size = sizeof(struct simple_bus_plat), }; static const struct udevice_id generic_simple_bus_ids[] = { |