Testing has shown that the current DM implementation of a platform / board specific translation offset, as its needed for the SPL on MVEBU platforms is buggy. The translation offset is confingured too late, after the driver bind functions are run. This may result in incorrect address translations. With the current implementation its not possible to configure the offset earlier, as the DM code has not run at all.
This patch now removed the set_/get_translation_offset() calls and moves the translation offset into the GD variable translation_offset. This variable will get used when CONFIG_TRANSLATION_OFFSET is enabled. This option is enabled only for MVEBU on ARM32 platforms, where its currenty needed and configured in the SPL.
Signed-off-by: Stefan Roese sr@denx.de Cc: Pierre Bourdon delroth@gmail.com Cc: Baruch Siach baruch@tkos.co.il Cc: Simon Glass sjg@chromium.org Cc: Heiko Schocher hs@denx.de Cc: Tom Rini trini@konsulko.com --- arch/arm/mach-mvebu/Kconfig | 1 + arch/arm/mach-mvebu/spl.c | 12 +++++++++--- drivers/core/Kconfig | 9 +++++++++ drivers/core/fdtaddr.c | 9 ++++++--- drivers/core/root.c | 21 --------------------- include/asm-generic/global_data.h | 4 ++++ include/dm/fdtaddr.h | 21 --------------------- 7 files changed, 29 insertions(+), 48 deletions(-)
diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig index 7dda04e0e3..6d3429b6b1 100644 --- a/arch/arm/mach-mvebu/Kconfig +++ b/arch/arm/mach-mvebu/Kconfig @@ -14,6 +14,7 @@ config ARMADA_32BIT select SPL_OF_CONTROL select SPL_SIMPLE_BUS select SUPPORT_SPL + select TRANSLATION_OFFSET
config ARMADA_64BIT bool diff --git a/arch/arm/mach-mvebu/spl.c b/arch/arm/mach-mvebu/spl.c index 9dd7c84b68..530b98c1aa 100644 --- a/arch/arm/mach-mvebu/spl.c +++ b/arch/arm/mach-mvebu/spl.c @@ -93,15 +93,21 @@ void board_init_f(ulong dummy) */ #endif
+ /* + * Use special translation offset for SPL. This needs to be + * configured *before* spl_init() is called as this function + * calls dm_init() which calls the bind functions of the + * device drivers. Here the base address needs to be configured + * (translated) correctly. + */ + gd->translation_offset = 0xd0000000 - 0xf1000000; + ret = spl_init(); if (ret) { debug("spl_init() failed: %d\n", ret); hang(); }
- /* Use special translation offset for SPL */ - dm_set_translation_offset(0xd0000000 - 0xf1000000); - preloader_console_init();
timer_init(); diff --git a/drivers/core/Kconfig b/drivers/core/Kconfig index ddf2fb3fb8..2d195ae35e 100644 --- a/drivers/core/Kconfig +++ b/drivers/core/Kconfig @@ -225,6 +225,15 @@ config SPL_OF_TRANSLATE used for the address translation. This function is faster and smaller in size than fdt_translate_address().
+config TRANSLATION_OFFSET + bool "Platforms specific translation offset" + depends on DM && OF_CONTROL + help + Some platforms need a special address translation. Those + platforms (e.g. mvebu in SPL) can configure a translation + offset by enabling this option and setting the translation_offset + variable in the GD in their platform- / board-specific code. + config OF_ISA_BUS bool depends on OF_TRANSLATE diff --git a/drivers/core/fdtaddr.c b/drivers/core/fdtaddr.c index e113f1dd39..c2873861da 100644 --- a/drivers/core/fdtaddr.c +++ b/drivers/core/fdtaddr.c @@ -74,13 +74,16 @@ fdt_addr_t devfdt_get_addr_index(struct udevice *dev, int index) } }
+#if defined(CONFIG_TRANSLATION_OFFSET) /* * 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(). + * offset by setting this value in the GD and enaling this + * feature via CONFIG_TRANSLATION_OFFSET. This value will + * get added to all addresses returned by devfdt_get_addr(). */ - addr += dm_get_translation_offset(); + addr += gd->translation_offset; +#endif
return addr; #else diff --git a/drivers/core/root.c b/drivers/core/root.c index e6ec7faf37..8fa096648e 100644 --- a/drivers/core/root.c +++ b/drivers/core/root.c @@ -25,10 +25,6 @@
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", }; @@ -52,22 +48,6 @@ void dm_fixup_for_gd_move(struct global_data *new_gd) } }
-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) { @@ -420,7 +400,6 @@ 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 */ diff --git a/include/asm-generic/global_data.h b/include/asm-generic/global_data.h index 78dcf40bff..65ee3e5d5a 100644 --- a/include/asm-generic/global_data.h +++ b/include/asm-generic/global_data.h @@ -20,6 +20,7 @@ */
#ifndef __ASSEMBLY__ +#include <fdtdec.h> #include <membuff.h> #include <linux/list.h>
@@ -133,6 +134,9 @@ typedef struct global_data { struct spl_handoff *spl_handoff; # endif #endif +#if defined(CONFIG_TRANSLATION_OFFSET) + fdt_addr_t translation_offset; /* optional translation offset */ +#endif } gd_t; #endif
diff --git a/include/dm/fdtaddr.h b/include/dm/fdtaddr.h index c171d9bc2f..3bc2599b6c 100644 --- a/include/dm/fdtaddr.h +++ b/include/dm/fdtaddr.h @@ -120,25 +120,4 @@ fdt_addr_t devfdt_get_addr_size_index(struct udevice *dev, int index, */ fdt_addr_t devfdt_get_addr_name(struct udevice *dev, const char *name);
-/** - * dm_set_translation_offset() - Set translation offset - * @offs: Translation offset - * - * Some platforms need a special address translation. Those - * platforms (e.g. mvebu in SPL) can configure a translation - * offset in the DM by calling this function. It will be - * added to all addresses returned in devfdt_get_addr(). - */ -void dm_set_translation_offset(fdt_addr_t offs); - -/** - * dm_get_translation_offset() - Get translation offset - * - * This function returns the translation offset that can - * be configured by calling dm_set_translation_offset(). - * - * @return translation offset for the device address (0 as default). - */ -fdt_addr_t dm_get_translation_offset(void); - #endif