1 /* 2 * (C) Copyright 2010-2012 3 * Texas Instruments, <www.ti.com> 4 * 5 * Aneesh V <aneesh@ti.com> 6 * Tom Rini <trini@ti.com> 7 * 8 * SPDX-License-Identifier: GPL-2.0+ 9 */ 10 #include <common.h> 11 #include <config.h> 12 #include <spl.h> 13 #include <image.h> 14 #include <linux/compiler.h> 15 16 #ifndef CONFIG_SPL_DM 17 /* Pointer to as well as the global data structure for SPL */ 18 DECLARE_GLOBAL_DATA_PTR; 19 20 /* 21 * WARNING: This is going away very soon. Don't use it and don't submit 22 * pafches that rely on it. The global_data area is set up in crt0.S. 23 */ 24 gd_t gdata __attribute__ ((section(".data"))); 25 #endif 26 27 /* 28 * In the context of SPL, board_init_f() prepares the hardware for execution 29 * from system RAM (DRAM, DDR...). As system RAM may not be available yet, 30 * board_init_f() must use the current GD to store any data which must be 31 * passed on to later stages. These data include the relocation destination, 32 * the future stack, and the future GD location. BSS is cleared after this 33 * function (and therefore must be accessible). 34 * 35 * We provide this version by default but mark it as __weak to allow for 36 * platforms to do this in their own way if needed. Please see the top 37 * level U-Boot README "Board Initialization Flow" section for info on what 38 * to put in this function. 39 */ 40 void __weak board_init_f(ulong dummy) 41 { 42 } 43 44 /* 45 * This function jumps to an image with argument. Normally an FDT or ATAGS 46 * image. 47 * arg: Pointer to paramter image in RAM 48 */ 49 #ifdef CONFIG_SPL_OS_BOOT 50 void __noreturn jump_to_image_linux(void *arg) 51 { 52 unsigned long machid = 0xffffffff; 53 #ifdef CONFIG_MACH_TYPE 54 machid = CONFIG_MACH_TYPE; 55 #endif 56 57 debug("Entering kernel arg pointer: 0x%p\n", arg); 58 typedef void (*image_entry_arg_t)(int, int, void *) 59 __attribute__ ((noreturn)); 60 image_entry_arg_t image_entry = 61 (image_entry_arg_t)(uintptr_t) spl_image.entry_point; 62 cleanup_before_linux(); 63 image_entry(0, machid, arg); 64 } 65 #endif 66