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| author | Stefan Roese <sr@denx.de> | 2012-08-23 08:34:21 +0200 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2012-12-05 17:30:22 +0100 |
| commit | ea8256f072ccc04c83fa10030673cdd4cd01cbd9 (patch) | |
| tree | 85d8f4dbeb70c33a9be4a6bfb7fd9cc259bde15d /arch | |
| parent | 966b11c74909d2c1b38070dc4ab5708fba5be43d (diff) | |
| download | u-boot-imx-ea8256f072ccc04c83fa10030673cdd4cd01cbd9.zip u-boot-imx-ea8256f072ccc04c83fa10030673cdd4cd01cbd9.tar.gz u-boot-imx-ea8256f072ccc04c83fa10030673cdd4cd01cbd9.tar.bz2 | |
SPL: Port SPL framework to powerpc
This patch enables the SPL framework to be used on powerpc platforms
and not only ARM.
timer_init() does not exist on PPC systems. The timer (decrementer) is
initialized and enabled in interrupt_init() here. And currently
interrupt_init() is called after relocation to SDRAM. Since the only
powerpc SPL implementation (a3m071) doesn't need a timer, let's remove
this timer_init() call for PPC systems.
Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/lib/Makefile | 4 | ||||
| -rw-r--r-- | arch/powerpc/lib/spl.c | 42 |
2 files changed, 46 insertions, 0 deletions
diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile index 20c5c38..bf40676 100644 --- a/arch/powerpc/lib/Makefile +++ b/arch/powerpc/lib/Makefile @@ -79,6 +79,10 @@ endif endif # not minimal +ifdef CONFIG_SPL_BUILD +COBJS-$(CONFIG_SPL_FRAMEWORK) += spl.o +endif + COBJS += $(sort $(COBJS-y)) SRCS := $(GLSOBJS:.o=.S) $(GLCOBJS:.o=.c) \ diff --git a/arch/powerpc/lib/spl.c b/arch/powerpc/lib/spl.c new file mode 100644 index 0000000..502c93b --- /dev/null +++ b/arch/powerpc/lib/spl.c @@ -0,0 +1,42 @@ +/* + * Copyright 2012 Stefan Roese <sr@denx.de> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#include <common.h> +#include <config.h> +#include <spl.h> +#include <image.h> +#include <linux/compiler.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* + * This function jumps to an image with argument. Normally an FDT or ATAGS + * image. + * arg: Pointer to paramter image in RAM + */ +#ifdef CONFIG_SPL_OS_BOOT +void __noreturn jump_to_image_linux(void *arg) +{ + debug("Entering kernel arg pointer: 0x%p\n", arg); + typedef void (*image_entry_arg_t)(void *, ulong r4, ulong r5, ulong r6, + ulong r7, ulong r8, ulong r9) + __attribute__ ((noreturn)); + image_entry_arg_t image_entry = + (image_entry_arg_t)spl_image.entry_point; + + image_entry(arg, 0, 0, EPAPR_MAGIC, CONFIG_SYS_BOOTMAPSZ, 0, 0); +} +#endif /* CONFIG_SPL_OS_BOOT */ |