In SPL (CONFIG_SPL_FRAMEWORK) board_init_f must setup the stack pointer, clear the BSS and call board_init_r. We mark this as weak as some platforms may need to perform additional initalization at this point. We provide a gd that we know will be in a usable location, once the BSS has been cleared to help with this as well. Finally, we no longer call relocate_code so remove that from the armv7 version. Next, both board_init_f and jump_to_image_linux are going to be inherently arch-specific, so move these versions to arch/arm/lib/spl.c Signed-off-by: Tom Rini <trini@ti.com>master
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/*
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* (C) Copyright 2010-2012 |
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* Texas Instruments, <www.ti.com> |
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* |
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* Aneesh V <aneesh@ti.com> |
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* Tom Rini <trini@ti.com> |
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* |
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* See file CREDITS for list of people who contributed to this |
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* project. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of |
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* the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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* MA 02111-1307 USA |
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*/ |
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#include <common.h> |
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#include <config.h> |
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#include <spl.h> |
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#include <image.h> |
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#include <linux/compiler.h> |
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/* Pointer to as well as the global data structure for SPL */ |
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DECLARE_GLOBAL_DATA_PTR; |
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gd_t gdata __attribute__ ((section(".data"))); |
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/*
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* In the context of SPL, board_init_f must ensure that any clocks/etc for |
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* DDR are enabled, ensure that the stack pointer is valid, clear the BSS |
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* and call board_init_f. We provide this version by default but mark it |
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* as __weak to allow for platforms to do this in their own way if needed. |
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*/ |
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void __weak board_init_f(ulong dummy) |
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{ |
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/* Set the stack pointer. */ |
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asm volatile("mov sp, %0\n" : : "r"(CONFIG_SPL_STACK)); |
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/* Clear the BSS. */ |
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memset(__bss_start, 0, __bss_end__ - __bss_start); |
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/* Set global data pointer. */ |
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gd = &gdata; |
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board_init_r(NULL, 0); |
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} |
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/*
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* This function jumps to an image with argument. Normally an FDT or ATAGS |
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* image. |
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* arg: Pointer to paramter image in RAM |
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*/ |
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#ifdef CONFIG_SPL_OS_BOOT |
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void __noreturn jump_to_image_linux(void *arg) |
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{ |
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debug("Entering kernel arg pointer: 0x%p\n", arg); |
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typedef void (*image_entry_arg_t)(int, int, void *) |
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__attribute__ ((noreturn)); |
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image_entry_arg_t image_entry = |
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(image_entry_arg_t) spl_image.entry_point; |
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cleanup_before_linux(); |
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image_entry(0, CONFIG_MACH_TYPE, arg); |
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} |
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#endif |
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