mirror of
https://github.com/AsahiLinux/u-boot
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
147 lines
3.4 KiB
C
147 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Device addresses
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*
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* Copyright (c) 2017 Google, Inc
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*
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* (C) Copyright 2012
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* Pavel Herrmann <morpheus.ibis@gmail.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <fdt_support.h>
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#include <asm/io.h>
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#include <dm/device-internal.h>
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DECLARE_GLOBAL_DATA_PTR;
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fdt_addr_t devfdt_get_addr_index(struct udevice *dev, int index)
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{
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#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
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fdt_addr_t addr;
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if (CONFIG_IS_ENABLED(OF_TRANSLATE)) {
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const fdt32_t *reg;
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int len = 0;
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int na, ns;
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na = fdt_address_cells(gd->fdt_blob,
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dev_of_offset(dev->parent));
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if (na < 1) {
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debug("bad #address-cells\n");
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return FDT_ADDR_T_NONE;
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}
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ns = fdt_size_cells(gd->fdt_blob, dev_of_offset(dev->parent));
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if (ns < 0) {
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debug("bad #size-cells\n");
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return FDT_ADDR_T_NONE;
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}
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reg = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "reg",
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&len);
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if (!reg || (len <= (index * sizeof(fdt32_t) * (na + ns)))) {
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debug("Req index out of range\n");
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return FDT_ADDR_T_NONE;
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}
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reg += index * (na + ns);
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if (ns) {
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/*
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* Use the full-fledged translate function for complex
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* bus setups.
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*/
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addr = fdt_translate_address((void *)gd->fdt_blob,
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dev_of_offset(dev), reg);
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} else {
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/* Non translatable if #size-cells == 0 */
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addr = fdt_read_number(reg, na);
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}
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} else {
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/*
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* Use the "simple" translate function for less complex
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* bus setups.
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*/
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addr = fdtdec_get_addr_size_auto_parent(gd->fdt_blob,
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dev_of_offset(dev->parent), dev_of_offset(dev),
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"reg", index, NULL, false);
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if (CONFIG_IS_ENABLED(SIMPLE_BUS) && addr != FDT_ADDR_T_NONE) {
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if (device_get_uclass_id(dev->parent) ==
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UCLASS_SIMPLE_BUS)
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addr = simple_bus_translate(dev->parent, addr);
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}
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}
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/*
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* Some platforms need a special address translation. Those
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* platforms (e.g. mvebu in SPL) can configure a translation
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* offset in the DM by calling dm_set_translation_offset() that
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* will get added to all addresses returned by devfdt_get_addr().
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*/
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addr += dm_get_translation_offset();
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return addr;
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#else
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return FDT_ADDR_T_NONE;
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#endif
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}
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fdt_addr_t devfdt_get_addr_size_index(struct udevice *dev, int index,
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fdt_size_t *size)
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{
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#if CONFIG_IS_ENABLED(OF_CONTROL)
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/*
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* Only get the size in this first call. We'll get the addr in the
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* next call to the exisiting dev_get_xxx function which handles
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* all config options.
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*/
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fdtdec_get_addr_size_auto_noparent(gd->fdt_blob, dev_of_offset(dev),
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"reg", index, size, false);
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/*
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* Get the base address via the existing function which handles
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* all Kconfig cases
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*/
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return devfdt_get_addr_index(dev, index);
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#else
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return FDT_ADDR_T_NONE;
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#endif
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}
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fdt_addr_t devfdt_get_addr_name(struct udevice *dev, const char *name)
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{
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#if CONFIG_IS_ENABLED(OF_CONTROL)
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int index;
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index = fdt_stringlist_search(gd->fdt_blob, dev_of_offset(dev),
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"reg-names", name);
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if (index < 0)
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return index;
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return devfdt_get_addr_index(dev, index);
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#else
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return FDT_ADDR_T_NONE;
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#endif
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}
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fdt_addr_t devfdt_get_addr(struct udevice *dev)
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{
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return devfdt_get_addr_index(dev, 0);
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}
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void *devfdt_get_addr_ptr(struct udevice *dev)
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{
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return (void *)(uintptr_t)devfdt_get_addr_index(dev, 0);
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}
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void *devfdt_map_physmem(struct udevice *dev, unsigned long size)
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{
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fdt_addr_t addr = devfdt_get_addr(dev);
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if (addr == FDT_ADDR_T_NONE)
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return NULL;
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return map_physmem(addr, size, MAP_NOCACHE);
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}
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