• Yatharth Kochar's avatar
    FWU: Add Generic Firmware Update framework support in BL1 · 48bfb88e
    Yatharth Kochar authored
    Firmware update(a.k.a FWU) feature is part of the TBB architecture.
    BL1 is responsible for carrying out the FWU process if platform
    specific code detects that it is needed.
    
    This patch adds support for FWU feature support in BL1 which is
    included by enabling `TRUSTED_BOARD_BOOT` compile time flag.
    
    This patch adds bl1_fwu.c which contains all the core operations
    of FWU, which are; SMC handler, image copy, authentication, execution
    and resumption. It also adds bl1.h introducing #defines for all
    BL1 SMCs.
    
    Following platform porting functions are introduced:
    
    int bl1_plat_mem_check(uintptr_t mem_base, unsigned int mem_size,
    unsigned int flags);
    	This function can be used to add platform specific memory checks
    	for the provided base/size for the given security state.
    	The weak definition will invoke `assert()` and return -ENOMEM.
    
    __dead2 void bl1_plat_fwu_done(void *cookie, void *reserved);
    	This function can be used to initiate platform specific pro...
    48bfb88e
bl1_private.h 2.44 KB
/*
 * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * Neither the name of ARM nor the names of its contributors may be used
 * to endorse or promote products derived from this software without specific
 * prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef __BL1_PRIVATE_H__
#define __BL1_PRIVATE_H__

#include <types.h>

/*******************************************************************************
 * Declarations of linker defined symbols which will tell us where BL1 lives
 * in Trusted RAM
 ******************************************************************************/
extern uint64_t __BL1_RAM_START__;
extern uint64_t __BL1_RAM_END__;
#define BL1_RAM_BASE (uint64_t)(&__BL1_RAM_START__)
#define BL1_RAM_LIMIT (uint64_t)(&__BL1_RAM_END__)

/******************************************
 * Function prototypes
 *****************************************/
void bl1_arch_setup(void);
void bl1_arch_next_el_setup(void);

void bl1_prepare_next_image(unsigned int image_id);

register_t bl1_fwu_smc_handler(unsigned int smc_fid,
		register_t x1,
		register_t x2,
		register_t x3,
		register_t x4,
		void *cookie,
		void *handle,
		unsigned int flags);
#endif /* __BL1_PRIVATE_H__ */