mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-17 10:18:38 +00:00
a821c4af79
These support the flat device tree. We want to use the dev_read_..() prefix for functions that support both flat tree and live tree. So rename the existing functions to avoid confusion. In the end we will have: 1. dev_read_addr...() - works on devices, supports flat/live tree 2. devfdt_get_addr...() - current functions, flat tree only 3. of_get_address() etc. - new functions, live tree only All drivers will be written to use 1. That function will in turn call either 2 or 3 depending on whether the flat or live tree is in use. Note this involves changing some dead code - the imx_lpi2c.c file. Signed-off-by: Simon Glass <sjg@chromium.org>
143 lines
3.3 KiB
C
143 lines
3.3 KiB
C
/*
|
|
* Device addresses
|
|
*
|
|
* Copyright (c) 2017 Google, Inc
|
|
*
|
|
* (C) Copyright 2012
|
|
* Pavel Herrmann <morpheus.ibis@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <fdt_support.h>
|
|
#include <asm/io.h>
|
|
#include <dm/device-internal.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
fdt_addr_t devfdt_get_addr_index(struct udevice *dev, int index)
|
|
{
|
|
#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
|
|
fdt_addr_t addr;
|
|
|
|
if (CONFIG_IS_ENABLED(OF_TRANSLATE)) {
|
|
const fdt32_t *reg;
|
|
int len = 0;
|
|
int na, ns;
|
|
|
|
na = fdt_address_cells(gd->fdt_blob,
|
|
dev_of_offset(dev->parent));
|
|
if (na < 1) {
|
|
debug("bad #address-cells\n");
|
|
return FDT_ADDR_T_NONE;
|
|
}
|
|
|
|
ns = fdt_size_cells(gd->fdt_blob, dev_of_offset(dev->parent));
|
|
if (ns < 0) {
|
|
debug("bad #size-cells\n");
|
|
return FDT_ADDR_T_NONE;
|
|
}
|
|
|
|
reg = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "reg",
|
|
&len);
|
|
if (!reg || (len <= (index * sizeof(fdt32_t) * (na + ns)))) {
|
|
debug("Req index out of range\n");
|
|
return FDT_ADDR_T_NONE;
|
|
}
|
|
|
|
reg += index * (na + ns);
|
|
|
|
/*
|
|
* Use the full-fledged translate function for complex
|
|
* bus setups.
|
|
*/
|
|
addr = fdt_translate_address((void *)gd->fdt_blob,
|
|
dev_of_offset(dev), reg);
|
|
} else {
|
|
/*
|
|
* Use the "simple" translate function for less complex
|
|
* bus setups.
|
|
*/
|
|
addr = fdtdec_get_addr_size_auto_parent(gd->fdt_blob,
|
|
dev_of_offset(dev->parent), dev_of_offset(dev),
|
|
"reg", index, NULL, false);
|
|
if (CONFIG_IS_ENABLED(SIMPLE_BUS) && addr != FDT_ADDR_T_NONE) {
|
|
if (device_get_uclass_id(dev->parent) ==
|
|
UCLASS_SIMPLE_BUS)
|
|
addr = simple_bus_translate(dev->parent, addr);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Some platforms need a special address translation. Those
|
|
* platforms (e.g. mvebu in SPL) can configure a translation
|
|
* offset in the DM by calling dm_set_translation_offset() that
|
|
* will get added to all addresses returned by devfdt_get_addr().
|
|
*/
|
|
addr += dm_get_translation_offset();
|
|
|
|
return addr;
|
|
#else
|
|
return FDT_ADDR_T_NONE;
|
|
#endif
|
|
}
|
|
|
|
fdt_addr_t devfdt_get_addr_size_index(struct udevice *dev, int index,
|
|
fdt_size_t *size)
|
|
{
|
|
#if CONFIG_IS_ENABLED(OF_CONTROL)
|
|
/*
|
|
* Only get the size in this first call. We'll get the addr in the
|
|
* next call to the exisiting dev_get_xxx function which handles
|
|
* all config options.
|
|
*/
|
|
fdtdec_get_addr_size_auto_noparent(gd->fdt_blob, dev_of_offset(dev),
|
|
"reg", index, size, false);
|
|
|
|
/*
|
|
* Get the base address via the existing function which handles
|
|
* all Kconfig cases
|
|
*/
|
|
return devfdt_get_addr_index(dev, index);
|
|
#else
|
|
return FDT_ADDR_T_NONE;
|
|
#endif
|
|
}
|
|
|
|
fdt_addr_t devfdt_get_addr_name(struct udevice *dev, const char *name)
|
|
{
|
|
#if CONFIG_IS_ENABLED(OF_CONTROL)
|
|
int index;
|
|
|
|
index = fdt_stringlist_search(gd->fdt_blob, dev_of_offset(dev),
|
|
"reg-names", name);
|
|
if (index < 0)
|
|
return index;
|
|
|
|
return devfdt_get_addr_index(dev, index);
|
|
#else
|
|
return FDT_ADDR_T_NONE;
|
|
#endif
|
|
}
|
|
|
|
fdt_addr_t devfdt_get_addr(struct udevice *dev)
|
|
{
|
|
return devfdt_get_addr_index(dev, 0);
|
|
}
|
|
|
|
void *devfdt_get_addr_ptr(struct udevice *dev)
|
|
{
|
|
return (void *)(uintptr_t)devfdt_get_addr_index(dev, 0);
|
|
}
|
|
|
|
void *devfdt_map_physmem(struct udevice *dev, unsigned long size)
|
|
{
|
|
fdt_addr_t addr = devfdt_get_addr(dev);
|
|
|
|
if (addr == FDT_ADDR_T_NONE)
|
|
return NULL;
|
|
|
|
return map_physmem(addr, size, MAP_NOCACHE);
|
|
}
|