4 * Copyright (c) 2017 Google, Inc
7 * Pavel Herrmann <morpheus.ibis@gmail.com>
9 * SPDX-License-Identifier: GPL-2.0+
14 #include <fdt_support.h>
16 #include <dm/device-internal.h>
18 DECLARE_GLOBAL_DATA_PTR;
20 fdt_addr_t devfdt_get_addr_index(struct udevice *dev, int index)
22 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
25 if (CONFIG_IS_ENABLED(OF_TRANSLATE)) {
30 na = fdt_address_cells(gd->fdt_blob,
31 dev_of_offset(dev->parent));
33 debug("bad #address-cells\n");
34 return FDT_ADDR_T_NONE;
37 ns = fdt_size_cells(gd->fdt_blob, dev_of_offset(dev->parent));
39 debug("bad #size-cells\n");
40 return FDT_ADDR_T_NONE;
43 reg = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "reg",
45 if (!reg || (len <= (index * sizeof(fdt32_t) * (na + ns)))) {
46 debug("Req index out of range\n");
47 return FDT_ADDR_T_NONE;
50 reg += index * (na + ns);
53 * Use the full-fledged translate function for complex
56 addr = fdt_translate_address((void *)gd->fdt_blob,
57 dev_of_offset(dev), reg);
60 * Use the "simple" translate function for less complex
63 addr = fdtdec_get_addr_size_auto_parent(gd->fdt_blob,
64 dev_of_offset(dev->parent), dev_of_offset(dev),
65 "reg", index, NULL, false);
66 if (CONFIG_IS_ENABLED(SIMPLE_BUS) && addr != FDT_ADDR_T_NONE) {
67 if (device_get_uclass_id(dev->parent) ==
69 addr = simple_bus_translate(dev->parent, addr);
74 * Some platforms need a special address translation. Those
75 * platforms (e.g. mvebu in SPL) can configure a translation
76 * offset in the DM by calling dm_set_translation_offset() that
77 * will get added to all addresses returned by devfdt_get_addr().
79 addr += dm_get_translation_offset();
83 return FDT_ADDR_T_NONE;
87 fdt_addr_t devfdt_get_addr_size_index(struct udevice *dev, int index,
90 #if CONFIG_IS_ENABLED(OF_CONTROL)
92 * Only get the size in this first call. We'll get the addr in the
93 * next call to the exisiting dev_get_xxx function which handles
96 fdtdec_get_addr_size_auto_noparent(gd->fdt_blob, dev_of_offset(dev),
97 "reg", index, size, false);
100 * Get the base address via the existing function which handles
103 return devfdt_get_addr_index(dev, index);
105 return FDT_ADDR_T_NONE;
109 fdt_addr_t devfdt_get_addr_name(struct udevice *dev, const char *name)
111 #if CONFIG_IS_ENABLED(OF_CONTROL)
114 index = fdt_stringlist_search(gd->fdt_blob, dev_of_offset(dev),
119 return devfdt_get_addr_index(dev, index);
121 return FDT_ADDR_T_NONE;
125 fdt_addr_t devfdt_get_addr(struct udevice *dev)
127 return devfdt_get_addr_index(dev, 0);
130 void *devfdt_get_addr_ptr(struct udevice *dev)
132 return (void *)(uintptr_t)devfdt_get_addr_index(dev, 0);
135 void *devfdt_map_physmem(struct udevice *dev, unsigned long size)
137 fdt_addr_t addr = devfdt_get_addr(dev);
139 if (addr == FDT_ADDR_T_NONE)
142 return map_physmem(addr, size, MAP_NOCACHE);