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dm: core: Enable optional use of fdt_translate_address()

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The current "simple" address translation simple_bus_translate() is not
working on some platforms (e.g. MVEBU). As here more complex "ranges"
properties are used in many nodes (multiple tuples etc). This patch
enables the optional use of the common fdt_translate_address() function
which handles this translation correctly.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Stefan Roese 2015-09-02 07:41:12 +02:00 committed by Luka Perkov
parent 42cc034f19
commit ef5cd33064
2 changed files with 50 additions and 0 deletions
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30
drivers/core/Kconfig
View file

@ -120,4 +120,34 @@ config SPL_SIMPLE_BUS
Supports the 'simple-bus' driver, which is used on some systems
in SPL.
config OF_TRANSLATE
bool "Translate addresses using fdt_translate_address"
depends on DM && OF_CONTROL
default y
help
If this option is enabled, the reg property will be translated
using the fdt_translate_address() function. This is necessary
on some platforms (e.g. MVEBU) using complex "ranges"
properties in many nodes. As this translation is not handled
correctly in the default simple_bus_translate() function.
If this option is not enabled, simple_bus_translate() will be
used for the address translation. This function is faster and
smaller in size than fdt_translate_address().
config SPL_OF_TRANSLATE
bool "Translate addresses using fdt_translate_address"
depends on SPL_DM && SPL_OF_CONTROL
default n
help
If this option is enabled, the reg property will be translated
using the fdt_translate_address() function. This is necessary
on some platforms (e.g. MVEBU) using complex "ranges"
properties in many nodes. As this translation is not handled
correctly in the default simple_bus_translate() function.
If this option is not enabled, simple_bus_translate() will be
used for the address translation. This function is faster and
smaller in size than fdt_translate_address().
endmenu

20
drivers/core/device.c
View file

@ -11,6 +11,7 @@
#include <common.h>
#include <fdtdec.h>
#include <fdt_support.h>
#include <malloc.h>
#include <dm/device.h>
#include <dm/device-internal.h>
@ -585,6 +586,25 @@ fdt_addr_t dev_get_addr(struct udevice *dev)
#if CONFIG_IS_ENABLED(OF_CONTROL)
fdt_addr_t addr;
if (CONFIG_IS_ENABLED(OF_TRANSLATE)) {
const fdt32_t *reg;
reg = fdt_getprop(gd->fdt_blob, dev->of_offset, "reg", NULL);
if (!reg)
return FDT_ADDR_T_NONE;
/*
* Use the full-fledged translate function for complex
* bus setups.
*/
return fdt_translate_address((void *)gd->fdt_blob,
dev->of_offset, reg);
}
/*
* Use the "simple" translate function for less complex
* bus setups.
*/
addr = fdtdec_get_addr_size_auto_parent(gd->fdt_blob,
dev->parent->of_offset,
dev->of_offset, "reg",