1 // SPDX-License-Identifier: GPL-2.0+
5 * Copyright (c) 2017 Google, Inc
8 * Pavel Herrmann <morpheus.ibis@gmail.com>
13 #include <fdt_support.h>
15 #include <asm/global_data.h>
17 #include <dm/device-internal.h>
19 DECLARE_GLOBAL_DATA_PTR;
21 fdt_addr_t devfdt_get_addr_index(const struct udevice *dev, int index)
23 #if CONFIG_IS_ENABLED(OF_REAL)
24 int offset = dev_of_offset(dev);
25 int parent = dev_of_offset(dev->parent);
28 if (CONFIG_IS_ENABLED(OF_TRANSLATE)) {
33 na = fdt_address_cells(gd->fdt_blob, parent);
35 debug("bad #address-cells\n");
36 return FDT_ADDR_T_NONE;
39 ns = fdt_size_cells(gd->fdt_blob, parent);
41 debug("bad #size-cells\n");
42 return FDT_ADDR_T_NONE;
45 reg = fdt_getprop(gd->fdt_blob, offset, "reg", &len);
46 if (!reg || (len <= (index * sizeof(fdt32_t) * (na + ns)))) {
47 debug("Req index out of range\n");
48 return FDT_ADDR_T_NONE;
51 reg += index * (na + ns);
55 * Use the full-fledged translate function for complex
58 addr = fdt_translate_address((void *)gd->fdt_blob,
61 /* Non translatable if #size-cells == 0 */
62 addr = fdt_read_number(reg, na);
66 * Use the "simple" translate function for less complex
69 addr = fdtdec_get_addr_size_auto_parent(gd->fdt_blob, parent,
72 if (CONFIG_IS_ENABLED(SIMPLE_BUS) && addr != FDT_ADDR_T_NONE) {
73 if (device_get_uclass_id(dev->parent) ==
75 addr = simple_bus_translate(dev->parent, addr);
79 #if defined(CONFIG_TRANSLATION_OFFSET)
81 * Some platforms need a special address translation. Those
82 * platforms (e.g. mvebu in SPL) can configure a translation
83 * offset by setting this value in the GD and enaling this
84 * feature via CONFIG_TRANSLATION_OFFSET. This value will
85 * get added to all addresses returned by devfdt_get_addr().
87 addr += gd->translation_offset;
92 return FDT_ADDR_T_NONE;
96 void *devfdt_get_addr_index_ptr(const struct udevice *dev, int index)
98 fdt_addr_t addr = devfdt_get_addr_index(dev, index);
100 return (addr == FDT_ADDR_T_NONE) ? NULL : (void *)(uintptr_t)addr;
103 fdt_addr_t devfdt_get_addr_size_index(const struct udevice *dev, int index,
106 #if CONFIG_IS_ENABLED(OF_CONTROL)
108 * Only get the size in this first call. We'll get the addr in the
109 * next call to the exisiting dev_get_xxx function which handles
110 * all config options.
112 fdtdec_get_addr_size_auto_noparent(gd->fdt_blob, dev_of_offset(dev),
113 "reg", index, size, false);
116 * Get the base address via the existing function which handles
119 return devfdt_get_addr_index(dev, index);
121 return FDT_ADDR_T_NONE;
125 fdt_addr_t devfdt_get_addr_name(const struct udevice *dev, const char *name)
127 #if CONFIG_IS_ENABLED(OF_CONTROL)
130 index = fdt_stringlist_search(gd->fdt_blob, dev_of_offset(dev),
135 return devfdt_get_addr_index(dev, index);
137 return FDT_ADDR_T_NONE;
141 fdt_addr_t devfdt_get_addr_size_name(const struct udevice *dev,
142 const char *name, fdt_size_t *size)
144 #if CONFIG_IS_ENABLED(OF_CONTROL)
147 index = fdt_stringlist_search(gd->fdt_blob, dev_of_offset(dev),
152 return devfdt_get_addr_size_index(dev, index, size);
154 return FDT_ADDR_T_NONE;
158 fdt_addr_t devfdt_get_addr(const struct udevice *dev)
160 return devfdt_get_addr_index(dev, 0);
163 void *devfdt_get_addr_ptr(const struct udevice *dev)
165 return devfdt_get_addr_index_ptr(dev, 0);
168 void *devfdt_remap_addr_index(const struct udevice *dev, int index)
170 fdt_addr_t addr = devfdt_get_addr_index(dev, index);
172 if (addr == FDT_ADDR_T_NONE)
175 return map_physmem(addr, 0, MAP_NOCACHE);
178 void *devfdt_remap_addr_name(const struct udevice *dev, const char *name)
180 fdt_addr_t addr = devfdt_get_addr_name(dev, name);
182 if (addr == FDT_ADDR_T_NONE)
185 return map_physmem(addr, 0, MAP_NOCACHE);
188 void *devfdt_remap_addr(const struct udevice *dev)
190 return devfdt_remap_addr_index(dev, 0);
193 void *devfdt_map_physmem(const struct udevice *dev, unsigned long size)
195 fdt_addr_t addr = devfdt_get_addr(dev);
197 if (addr == FDT_ADDR_T_NONE)
200 return map_physmem(addr, size, MAP_NOCACHE);
203 fdt_addr_t devfdt_get_addr_pci(const struct udevice *dev)
207 addr = devfdt_get_addr(dev);
208 if (CONFIG_IS_ENABLED(PCI) && addr == FDT_ADDR_T_NONE) {
209 struct fdt_pci_addr pci_addr;
213 ret = ofnode_read_pci_addr(dev_ofnode(dev), FDT_PCI_SPACE_MEM32,
216 /* try if there is any i/o-mapped register */
217 ret = ofnode_read_pci_addr(dev_ofnode(dev),
218 FDT_PCI_SPACE_IO, "reg",
221 return FDT_ADDR_T_NONE;
223 ret = fdtdec_get_pci_bar32(dev, &pci_addr, &bar);
225 return FDT_ADDR_T_NONE;