1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2010-2012
4 * Texas Instruments, <www.ti.com>
6 * Aneesh V <aneesh@ti.com>
7 * Tom Rini <trini@ti.com>
15 #include <asm/cache.h>
16 #include <linux/compiler.h>
17 #include <asm/mach-types.h>
20 /* Pointer to as well as the global data structure for SPL */
21 DECLARE_GLOBAL_DATA_PTR;
24 * WARNING: This is going away very soon. Don't use it and don't submit
25 * pafches that rely on it. The global_data area is set up in crt0.S.
27 gd_t gdata __attribute__ ((section(".data")));
31 * In the context of SPL, board_init_f() prepares the hardware for execution
32 * from system RAM (DRAM, DDR...). As system RAM may not be available yet,
33 * board_init_f() must use the current GD to store any data which must be
34 * passed on to later stages. These data include the relocation destination,
35 * the future stack, and the future GD location. BSS is cleared after this
36 * function (and therefore must be accessible).
38 * We provide this version by default but mark it as __weak to allow for
39 * platforms to do this in their own way if needed. Please see the top
40 * level U-Boot README "Board Initialization Flow" section for info on what
41 * to put in this function.
43 void __weak board_init_f(ulong dummy)
48 * This function jumps to an image with argument. Normally an FDT or ATAGS
51 #ifdef CONFIG_SPL_OS_BOOT
53 void __noreturn jump_to_image_linux(struct spl_image_info *spl_image)
55 debug("Entering kernel arg pointer: 0x%p\n", spl_image->arg);
56 cleanup_before_linux();
57 armv8_switch_to_el2((u64)spl_image->arg, 0, 0, 0,
58 spl_image->entry_point, ES_TO_AARCH64);
61 void __noreturn jump_to_image_linux(struct spl_image_info *spl_image)
63 unsigned long machid = 0xffffffff;
64 #ifdef CONFIG_MACH_TYPE
65 machid = CONFIG_MACH_TYPE;
68 debug("Entering kernel arg pointer: 0x%p\n", spl_image->arg);
69 typedef void (*image_entry_arg_t)(int, int, void *)
70 __attribute__ ((noreturn));
71 image_entry_arg_t image_entry =
72 (image_entry_arg_t)(uintptr_t) spl_image->entry_point;
73 cleanup_before_linux();
74 image_entry(0, machid, spl_image->arg);
76 #endif /* CONFIG_ARM64 */