diff options
Diffstat (limited to 'arch/arm/lib')
-rw-r--r-- | arch/arm/lib/Makefile | 2 | ||||
-rw-r--r-- | arch/arm/lib/spl.c | 72 |
2 files changed, 74 insertions, 0 deletions
diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile index bd3b77f..3422ac1 100644 --- a/arch/arm/lib/Makefile +++ b/arch/arm/lib/Makefile @@ -44,6 +44,8 @@ COBJS-y += interrupts.o COBJS-y += reset.o SOBJS-$(CONFIG_USE_ARCH_MEMSET) += memset.o SOBJS-$(CONFIG_USE_ARCH_MEMCPY) += memcpy.o +else +COBJS-$(CONFIG_SPL_FRAMEWORK) += spl.o endif COBJS-y += cache.o diff --git a/arch/arm/lib/spl.c b/arch/arm/lib/spl.c new file mode 100644 index 0000000..f568f61 --- /dev/null +++ b/arch/arm/lib/spl.c @@ -0,0 +1,72 @@ +/* + * (C) Copyright 2010-2012 + * Texas Instruments, <www.ti.com> + * + * Aneesh V <aneesh@ti.com> + * Tom Rini <trini@ti.com> + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#include <common.h> +#include <config.h> +#include <spl.h> +#include <image.h> +#include <linux/compiler.h> + +/* Pointer to as well as the global data structure for SPL */ +DECLARE_GLOBAL_DATA_PTR; +gd_t gdata __attribute__ ((section(".data"))); + +/* + * In the context of SPL, board_init_f must ensure that any clocks/etc for + * DDR are enabled, ensure that the stack pointer is valid, clear the BSS + * and call board_init_f. We provide this version by default but mark it + * as __weak to allow for platforms to do this in their own way if needed. + */ +void __weak board_init_f(ulong dummy) +{ + /* Set the stack pointer. */ + asm volatile("mov sp, %0\n" : : "r"(CONFIG_SPL_STACK)); + + /* Clear the BSS. */ + memset(__bss_start, 0, __bss_end__ - __bss_start); + + /* Set global data pointer. */ + gd = &gdata; + + board_init_r(NULL, 0); +} + +/* + * 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)(int, int, void *) + __attribute__ ((noreturn)); + image_entry_arg_t image_entry = + (image_entry_arg_t) spl_image.entry_point; + cleanup_before_linux(); + image_entry(0, CONFIG_MACH_TYPE, arg); +} +#endif |