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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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