diff options
Diffstat (limited to 'roms/u-boot/arch/arm/lib/spl.c')
| -rw-r--r-- | roms/u-boot/arch/arm/lib/spl.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arm/lib/spl.c b/roms/u-boot/arch/arm/lib/spl.c new file mode 100644 index 000000000..8e2bdf353 --- /dev/null +++ b/roms/u-boot/arch/arm/lib/spl.c @@ -0,0 +1,79 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2010-2012 + * Texas Instruments, <www.ti.com> + * + * Aneesh V <aneesh@ti.com> + * Tom Rini <trini@ti.com> + */ + +#include <common.h> +#include <config.h> +#include <init.h> +#include <log.h> +#include <spl.h> +#include <image.h> +#include <asm/cache.h> +#include <asm/global_data.h> +#include <linux/compiler.h> +#include <asm/mach-types.h> + +#ifndef CONFIG_SPL_DM +/* Pointer to as well as the global data structure for SPL */ +DECLARE_GLOBAL_DATA_PTR; + +/* + * WARNING: This is going away very soon. Don't use it and don't submit + * pafches that rely on it. The global_data area is set up in crt0.S. + */ +gd_t gdata __section(".data"); +#endif + +/* + * In the context of SPL, board_init_f() prepares the hardware for execution + * from system RAM (DRAM, DDR...). As system RAM may not be available yet, + * board_init_f() must use the current GD to store any data which must be + * passed on to later stages. These data include the relocation destination, + * the future stack, and the future GD location. BSS is cleared after this + * function (and therefore must be accessible). + * + * We provide this version by default but mark it as __weak to allow for + * platforms to do this in their own way if needed. Please see the top + * level U-Boot README "Board Initialization Flow" section for info on what + * to put in this function. + */ +void __weak board_init_f(ulong dummy) +{ +} + +/* + * This function jumps to an image with argument. Normally an FDT or ATAGS + * image. + */ +#ifdef CONFIG_SPL_OS_BOOT +#ifdef CONFIG_ARM64 +void __noreturn jump_to_image_linux(struct spl_image_info *spl_image) +{ + debug("Entering kernel arg pointer: 0x%p\n", spl_image->arg); + cleanup_before_linux(); + armv8_switch_to_el2((u64)spl_image->arg, 0, 0, 0, + spl_image->entry_point, ES_TO_AARCH64); +} +#else +void __noreturn jump_to_image_linux(struct spl_image_info *spl_image) +{ + unsigned long machid = 0xffffffff; +#ifdef CONFIG_MACH_TYPE + machid = CONFIG_MACH_TYPE; +#endif + + debug("Entering kernel arg pointer: 0x%p\n", spl_image->arg); + typedef void (*image_entry_arg_t)(int, int, void *) + __attribute__ ((noreturn)); + image_entry_arg_t image_entry = + (image_entry_arg_t)(uintptr_t) spl_image->entry_point; + cleanup_before_linux(); + image_entry(0, machid, spl_image->arg); +} +#endif /* CONFIG_ARM64 */ +#endif |