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| author | Stefan Roese <sr@denx.de> | 2015-12-14 16:18:15 +0100 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2016-01-12 10:19:09 -0700 |
| commit | 66eaea6cd152a0dae5964930483f68d92047b2f5 (patch) | |
| tree | 725a81c3cb8c4a31acc58ea706e735b8e1171573 /drivers/core | |
| parent | 9b20519887ab39b389cd3e178c11d5bdb19c92e6 (diff) | |
| download | u-boot-66eaea6cd152a0dae5964930483f68d92047b2f5.tar.gz u-boot-66eaea6cd152a0dae5964930483f68d92047b2f5.tar.xz u-boot-66eaea6cd152a0dae5964930483f68d92047b2f5.zip | |
dm: core: Add option to configure an offset for the address translation
Some platforms need to ability to configure an offset to the standard
addresses extracted from the device-tree. This patch allows this by
adding a function to DM to configure this offset (if needed).
Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Simon Glass <sjg@chromium.org>
Cc: Simon Glass <sjg@chromium.org>
Fixed space before tab:
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/core')
| -rw-r--r-- | drivers/core/device.c | 31 | ||||
| -rw-r--r-- | drivers/core/root.c | 21 |
2 files changed, 41 insertions, 11 deletions
diff --git a/drivers/core/device.c b/drivers/core/device.c index 758f39064c..7a02a931ed 100644 --- a/drivers/core/device.c +++ b/drivers/core/device.c @@ -597,22 +597,31 @@ fdt_addr_t dev_get_addr(struct udevice *dev) * Use the full-fledged translate function for complex * bus setups. */ - return fdt_translate_address((void *)gd->fdt_blob, + addr = fdt_translate_address((void *)gd->fdt_blob, dev->of_offset, reg); + } else { + /* + * 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", + 0, NULL); + 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); + } } /* - * Use the "simple" translate function for less complex - * bus setups. + * 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 dev_get_addr(). */ - addr = fdtdec_get_addr_size_auto_parent(gd->fdt_blob, - dev->parent->of_offset, - dev->of_offset, "reg", - 0, NULL); - 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); - } + addr += dm_get_translation_offset(); return addr; #else diff --git a/drivers/core/root.c b/drivers/core/root.c index e7b1f24968..13c2713e61 100644 --- a/drivers/core/root.c +++ b/drivers/core/root.c @@ -23,6 +23,10 @@ DECLARE_GLOBAL_DATA_PTR; +struct root_priv { + fdt_addr_t translation_offset; /* optional translation offset */ +}; + static const struct driver_info root_info = { .name = "root_driver", }; @@ -37,6 +41,22 @@ struct udevice *dm_root(void) return gd->dm_root; } +fdt_addr_t dm_get_translation_offset(void) +{ + struct udevice *root = dm_root(); + struct root_priv *priv = dev_get_priv(root); + + return priv->translation_offset; +} + +void dm_set_translation_offset(fdt_addr_t offs) +{ + struct udevice *root = dm_root(); + struct root_priv *priv = dev_get_priv(root); + + priv->translation_offset = offs; +} + #if defined(CONFIG_NEEDS_MANUAL_RELOC) void fix_drivers(void) { @@ -228,6 +248,7 @@ int dm_init_and_scan(bool pre_reloc_only) U_BOOT_DRIVER(root_driver) = { .name = "root_driver", .id = UCLASS_ROOT, + .priv_auto_alloc_size = sizeof(struct root_priv), }; /* This is the root uclass */ |