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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (c) 2014 Google, Inc
- */
- #define LOG_CATEGORY UCLASS_SIMPLE_BUS
- #include <common.h>
- #include <asm/global_data.h>
- #include <dm.h>
- #include <dm/simple_bus.h>
- #include <fdt_support.h>
- DECLARE_GLOBAL_DATA_PTR;
- fdt_addr_t simple_bus_translate(struct udevice *dev, fdt_addr_t addr)
- {
- struct simple_bus_plat *plat = dev_get_uclass_plat(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)
- {
- #if CONFIG_IS_ENABLED(OF_PLATDATA)
- return 0;
- #else
- struct simple_bus_plat *plat = dev_get_uclass_plat(dev);
- int ret;
- if (CONFIG_IS_ENABLED(SIMPLE_BUS_CORRECT_RANGE)) {
- uint64_t caddr, paddr, len;
- /* only read range index 0 */
- ret = fdt_read_range((void *)gd->fdt_blob, dev_of_offset(dev),
- 0, &caddr, &paddr, &len);
- if (!ret) {
- plat->base = caddr;
- plat->target = paddr;
- plat->size = len;
- }
- } else {
- u32 cell[3];
- ret = dev_read_u32_array(dev, "ranges", cell,
- ARRAY_SIZE(cell));
- if (!ret) {
- plat->base = cell[0];
- plat->target = cell[1];
- plat->size = cell[2];
- }
- }
- return dm_scan_fdt_dev(dev);
- #endif
- }
- UCLASS_DRIVER(simple_bus) = {
- .id = UCLASS_SIMPLE_BUS,
- .name = "simple_bus",
- .post_bind = simple_bus_post_bind,
- .per_device_plat_auto = sizeof(struct simple_bus_plat),
- };
- #if !CONFIG_IS_ENABLED(OF_PLATDATA)
- static const struct udevice_id generic_simple_bus_ids[] = {
- { .compatible = "simple-bus" },
- { .compatible = "simple-mfd" },
- { }
- };
- #endif
- U_BOOT_DRIVER(simple_bus) = {
- .name = "simple_bus",
- .id = UCLASS_SIMPLE_BUS,
- .of_match = of_match_ptr(generic_simple_bus_ids),
- .flags = DM_FLAG_PRE_RELOC,
- };
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