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 must ensure that any clocks/etc for 29 * DDR are enabled, ensure that the stack pointer is valid, clear the BSS 30 * and call board_init_r. We provide this version by default but mark it 31 * as __weak to allow for platforms to do this in their own way if needed. 32 */ 33 void __weak board_init_f(ulong dummy) 34 { 35 /* Clear the BSS. */ 36 memset(__bss_start, 0, __bss_end - __bss_start); 37 38 #ifndef CONFIG_SPL_DM 39 /* TODO: Remove settings of the global data pointer here */ 40 gd = &gdata; 41 #endif 42 43 board_init_r(NULL, 0); 44 } 45 46 /* 47 * This function jumps to an image with argument. Normally an FDT or ATAGS 48 * image. 49 * arg: Pointer to paramter image in RAM 50 */ 51 #ifdef CONFIG_SPL_OS_BOOT 52 void __noreturn jump_to_image_linux(void *arg) 53 { 54 unsigned long machid = 0xffffffff; 55 #ifdef CONFIG_MACH_TYPE 56 machid = CONFIG_MACH_TYPE; 57 #endif 58 59 debug("Entering kernel arg pointer: 0x%p\n", arg); 60 typedef void (*image_entry_arg_t)(int, int, void *) 61 __attribute__ ((noreturn)); 62 image_entry_arg_t image_entry = 63 (image_entry_arg_t) spl_image.entry_point; 64 cleanup_before_linux(); 65 image_entry(0, machid, arg); 66 } 67 #endif 68