plat/fvp/bl2_fvp_setup.c - filogic/atf - Gitiles

 /*
  * 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.
  */

 #include <arch_helpers.h>
 #include <assert.h>
 #include <bl_common.h>
 #include <console.h>
 #include <platform.h>
 #include <platform_def.h>
 #include <string.h>
 #include "fvp_def.h"
 #include "fvp_private.h"

 /*******************************************************************************
  * Declarations of linker defined symbols which will help us find the layout
  * of trusted SRAM
  ******************************************************************************/
 extern unsigned long __RO_START__;
 extern unsigned long __RO_END__;

 extern unsigned long __COHERENT_RAM_START__;
 extern unsigned long __COHERENT_RAM_END__;

 /*
  * The next 2 constants identify the extents of the code & RO data region.
  * These addresses are used by the MMU setup code and therefore they must be
  * page-aligned.  It is the responsibility of the linker script to ensure that
  * __RO_START__ and __RO_END__ linker symbols refer to page-aligned addresses.
  */
 #define BL2_RO_BASE (unsigned long)(&__RO_START__)
 #define BL2_RO_LIMIT (unsigned long)(&__RO_END__)

 /*
  * The next 2 constants identify the extents of the coherent memory region.
  * These addresses are used by the MMU setup code and therefore they must be
  * page-aligned.  It is the responsibility of the linker script to ensure that
  * __COHERENT_RAM_START__ and __COHERENT_RAM_END__ linker symbols refer to
  * page-aligned addresses.
  */
 #define BL2_COHERENT_RAM_BASE (unsigned long)(&__COHERENT_RAM_START__)
 #define BL2_COHERENT_RAM_LIMIT (unsigned long)(&__COHERENT_RAM_END__)

 /* Data structure which holds the extents of the trusted SRAM for BL2 */
 static meminfo_t bl2_tzram_layout
 __attribute__ ((aligned(PLATFORM_CACHE_LINE_SIZE),
 		section("tzfw_coherent_mem")));

 /*******************************************************************************
  * Reference to structures which holds the arguments which need to be passed
  * to BL31
  ******************************************************************************/
 static bl31_params_t *bl2_to_bl31_params;
 static entry_point_info_t *bl31_ep_info;

 meminfo_t *bl2_plat_sec_mem_layout(void)
 {
 	return &bl2_tzram_layout;
 }

 /*******************************************************************************
  * This function assigns a pointer to the memory that the platform has kept
  * aside to pass platform specific and trusted firmware related information
  * to BL31. This memory is allocated by allocating memory to
  * bl2_to_bl31_params_mem_t structure which is a superset of all the
  * structure whose information is passed to BL31
  * NOTE: This function should be called only once and should be done
  * before generating params to BL31
  ******************************************************************************/
 bl31_params_t *bl2_plat_get_bl31_params(void)
 {
 	bl2_to_bl31_params_mem_t *bl31_params_mem;

 #if TSP_RAM_LOCATION_ID == TSP_IN_TZDRAM
 	/*
 	 * Ensure that the secure DRAM memory used for passing BL31 arguments
 	 * does not overlap with the BL32_BASE.
 	 */
 	assert(BL32_BASE > PARAMS_BASE + sizeof(bl2_to_bl31_params_mem_t));
 #endif

 	/*
 	 * Allocate the memory for all the arguments that needs to
 	 * be passed to BL31
 	 */
 	bl31_params_mem = (bl2_to_bl31_params_mem_t *)PARAMS_BASE;
 	memset((void *)PARAMS_BASE, 0, sizeof(bl2_to_bl31_params_mem_t));

 	/* Assign memory for TF related information */
 	bl2_to_bl31_params = &bl31_params_mem->bl31_params;
 	SET_PARAM_HEAD(bl2_to_bl31_params, PARAM_BL31, VERSION_1, 0);

 	/* Fill BL31 related information */
 	bl31_ep_info = &bl31_params_mem->bl31_ep_info;
 	bl2_to_bl31_params->bl31_image_info = &bl31_params_mem->bl31_image_info;
 	SET_PARAM_HEAD(bl2_to_bl31_params->bl31_image_info, PARAM_IMAGE_BINARY,
 						VERSION_1, 0);

 	/* Fill BL32 related information if it exists */
 	if (BL32_BASE) {
 		bl2_to_bl31_params->bl32_ep_info =
 					&bl31_params_mem->bl32_ep_info;
 		SET_PARAM_HEAD(bl2_to_bl31_params->bl32_ep_info,
 					PARAM_EP, VERSION_1, 0);
 		bl2_to_bl31_params->bl32_image_info =
 					&bl31_params_mem->bl32_image_info;
 		SET_PARAM_HEAD(bl2_to_bl31_params->bl32_image_info,
 					PARAM_IMAGE_BINARY,
 					VERSION_1, 0);
 	}

 	/* Fill BL33 related information */
 	bl2_to_bl31_params->bl33_ep_info = &bl31_params_mem->bl33_ep_info;
 	SET_PARAM_HEAD(bl2_to_bl31_params->bl33_ep_info,
 					PARAM_EP, VERSION_1, 0);
 	bl2_to_bl31_params->bl33_image_info = &bl31_params_mem->bl33_image_info;
 	SET_PARAM_HEAD(bl2_to_bl31_params->bl33_image_info, PARAM_IMAGE_BINARY,
 					VERSION_1, 0);

 	return bl2_to_bl31_params;
 }


 /*******************************************************************************
  * This function returns a pointer to the shared memory that the platform
  * has kept to point to entry point information of BL31 to BL2
  ******************************************************************************/
 struct entry_point_info *bl2_plat_get_bl31_ep_info(void)
 {
 #if DEBUG
 	bl31_ep_info->args.arg1 = FVP_BL31_PLAT_PARAM_VAL;
 #endif
 	return bl31_ep_info;
 }


 /*******************************************************************************
  * BL1 has passed the extents of the trusted SRAM that should be visible to BL2
  * in x0. This memory layout is sitting at the base of the free trusted SRAM.
  * Copy it to a safe loaction before its reclaimed by later BL2 functionality.
  ******************************************************************************/
 void bl2_early_platform_setup(meminfo_t *mem_layout)
 {
 	/* Initialize the console to provide early debug support */
 	console_init(PL011_UART0_BASE);

 	/* Setup the BL2 memory layout */
 	bl2_tzram_layout = *mem_layout;

 	/* Initialize the platform config for future decision making */
 	fvp_config_setup();
 }

 /*******************************************************************************
  * Perform platform specific setup. For now just initialize the memory location
  * to use for passing arguments to BL31.
  ******************************************************************************/
 void bl2_platform_setup(void)
 {
 	/*
 	 * Do initial security configuration to allow DRAM/device access. On
 	 * Base FVP only DRAM security is programmable (via TrustZone), but
 	 * other platforms might have more programmable security devices
 	 * present.
 	 */
 	fvp_security_setup();

 	/* Initialise the IO layer and register platform IO devices */
 	fvp_io_setup();
 }

 /* Flush the TF params and the TF plat params */
 void bl2_plat_flush_bl31_params(void)
 {
 	flush_dcache_range((unsigned long)PARAMS_BASE, \
 				sizeof(bl2_to_bl31_params_mem_t));
 }


 /*******************************************************************************
  * Perform the very early platform specific architectural setup here. At the
  * moment this is only intializes the mmu in a quick and dirty way.
  ******************************************************************************/
 void bl2_plat_arch_setup(void)
 {
 	fvp_configure_mmu_el1(bl2_tzram_layout.total_base,
 			      bl2_tzram_layout.total_size,
 			      BL2_RO_BASE,
 			      BL2_RO_LIMIT,
 			      BL2_COHERENT_RAM_BASE,
 			      BL2_COHERENT_RAM_LIMIT);
 }

 /*******************************************************************************
  * Before calling this function BL31 is loaded in memory and its entrypoint
  * is set by load_image. This is a placeholder for the platform to change
  * the entrypoint of BL31 and set SPSR and security state.
  * On FVP we are only setting the security state, entrypoint
  ******************************************************************************/
 void bl2_plat_set_bl31_ep_info(image_info_t *bl31_image_info,
 					entry_point_info_t *bl31_ep_info)
 {
 	SET_SECURITY_STATE(bl31_ep_info->h.attr, SECURE);
 	bl31_ep_info->spsr = SPSR_64(MODE_EL3, MODE_SP_ELX,
 					DISABLE_ALL_EXCEPTIONS);
 }


 /*******************************************************************************
  * Before calling this function BL32 is loaded in memory and its entrypoint
  * is set by load_image. This is a placeholder for the platform to change
  * the entrypoint of BL32 and set SPSR and security state.
  * On FVP we are only setting the security state, entrypoint
  ******************************************************************************/
 void bl2_plat_set_bl32_ep_info(image_info_t *bl32_image_info,
 					entry_point_info_t *bl32_ep_info)
 {
 	SET_SECURITY_STATE(bl32_ep_info->h.attr, SECURE);
 	bl32_ep_info->spsr = fvp_get_spsr_for_bl32_entry();
 }

 /*******************************************************************************
  * Before calling this function BL33 is loaded in memory and its entrypoint
  * is set by load_image. This is a placeholder for the platform to change
  * the entrypoint of BL33 and set SPSR and security state.
  * On FVP we are only setting the security state, entrypoint
  ******************************************************************************/
 void bl2_plat_set_bl33_ep_info(image_info_t *image,
 					entry_point_info_t *bl33_ep_info)
 {
 	SET_SECURITY_STATE(bl33_ep_info->h.attr, NON_SECURE);
 	bl33_ep_info->spsr = fvp_get_spsr_for_bl33_entry();
 }


 /*******************************************************************************
  * Populate the extents of memory available for loading BL32
  ******************************************************************************/
 void bl2_plat_get_bl32_meminfo(meminfo_t *bl32_meminfo)
 {
 	/*
 	 * Populate the extents of memory available for loading BL32.
 	 */
 	bl32_meminfo->total_base = BL32_BASE;
 	bl32_meminfo->free_base = BL32_BASE;
 	bl32_meminfo->total_size =
 			(TSP_SEC_MEM_BASE + TSP_SEC_MEM_SIZE) - BL32_BASE;
 	bl32_meminfo->free_size =
 			(TSP_SEC_MEM_BASE + TSP_SEC_MEM_SIZE) - BL32_BASE;
 }


 /*******************************************************************************
  * Populate the extents of memory available for loading BL33
  ******************************************************************************/
 void bl2_plat_get_bl33_meminfo(meminfo_t *bl33_meminfo)
 {
 	bl33_meminfo->total_base = DRAM_BASE;
 	bl33_meminfo->total_size = DRAM_SIZE - DRAM1_SEC_SIZE;
 	bl33_meminfo->free_base = DRAM_BASE;
 	bl33_meminfo->free_size = DRAM_SIZE - DRAM1_SEC_SIZE;
 }
	/*
	* 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.
	*/

	#include <arch_helpers.h>
	#include <assert.h>
	#include <bl_common.h>
	#include <console.h>
	#include <platform.h>
	#include <platform_def.h>
	#include <string.h>
	#include "fvp_def.h"
	#include "fvp_private.h"

	/*******************************************************************************
	* Declarations of linker defined symbols which will help us find the layout
	* of trusted SRAM
	******************************************************************************/
	extern unsigned long __RO_START__;
	extern unsigned long __RO_END__;

	extern unsigned long __COHERENT_RAM_START__;
	extern unsigned long __COHERENT_RAM_END__;

	/*
	* The next 2 constants identify the extents of the code & RO data region.
	* These addresses are used by the MMU setup code and therefore they must be
	* page-aligned. It is the responsibility of the linker script to ensure that
	* __RO_START__ and __RO_END__ linker symbols refer to page-aligned addresses.
	*/
	#define BL2_RO_BASE (unsigned long)(&__RO_START__)
	#define BL2_RO_LIMIT (unsigned long)(&__RO_END__)

	/*
	* The next 2 constants identify the extents of the coherent memory region.
	* These addresses are used by the MMU setup code and therefore they must be
	* page-aligned. It is the responsibility of the linker script to ensure that
	* __COHERENT_RAM_START__ and __COHERENT_RAM_END__ linker symbols refer to
	* page-aligned addresses.
	*/
	#define BL2_COHERENT_RAM_BASE (unsigned long)(&__COHERENT_RAM_START__)
	#define BL2_COHERENT_RAM_LIMIT (unsigned long)(&__COHERENT_RAM_END__)

	/* Data structure which holds the extents of the trusted SRAM for BL2 */
	static meminfo_t bl2_tzram_layout
	__attribute__ ((aligned(PLATFORM_CACHE_LINE_SIZE),
	section("tzfw_coherent_mem")));

	/*******************************************************************************
	* Reference to structures which holds the arguments which need to be passed
	* to BL31
	******************************************************************************/
	static bl31_params_t *bl2_to_bl31_params;
	static entry_point_info_t *bl31_ep_info;

	meminfo_t *bl2_plat_sec_mem_layout(void)
	{
	return &bl2_tzram_layout;
	}

	/*******************************************************************************
	* This function assigns a pointer to the memory that the platform has kept
	* aside to pass platform specific and trusted firmware related information
	* to BL31. This memory is allocated by allocating memory to
	* bl2_to_bl31_params_mem_t structure which is a superset of all the
	* structure whose information is passed to BL31
	* NOTE: This function should be called only once and should be done
	* before generating params to BL31
	******************************************************************************/
	bl31_params_t *bl2_plat_get_bl31_params(void)
	{
	bl2_to_bl31_params_mem_t *bl31_params_mem;

	#if TSP_RAM_LOCATION_ID == TSP_IN_TZDRAM
	/*
	* Ensure that the secure DRAM memory used for passing BL31 arguments
	* does not overlap with the BL32_BASE.
	*/
	assert(BL32_BASE > PARAMS_BASE + sizeof(bl2_to_bl31_params_mem_t));
	#endif

	/*
	* Allocate the memory for all the arguments that needs to
	* be passed to BL31
	*/
	bl31_params_mem = (bl2_to_bl31_params_mem_t *)PARAMS_BASE;
	memset((void *)PARAMS_BASE, 0, sizeof(bl2_to_bl31_params_mem_t));

	/* Assign memory for TF related information */
	bl2_to_bl31_params = &bl31_params_mem->bl31_params;
	SET_PARAM_HEAD(bl2_to_bl31_params, PARAM_BL31, VERSION_1, 0);

	/* Fill BL31 related information */
	bl31_ep_info = &bl31_params_mem->bl31_ep_info;
	bl2_to_bl31_params->bl31_image_info = &bl31_params_mem->bl31_image_info;
	SET_PARAM_HEAD(bl2_to_bl31_params->bl31_image_info, PARAM_IMAGE_BINARY,
	VERSION_1, 0);

	/* Fill BL32 related information if it exists */
	if (BL32_BASE) {
	bl2_to_bl31_params->bl32_ep_info =
	&bl31_params_mem->bl32_ep_info;
	SET_PARAM_HEAD(bl2_to_bl31_params->bl32_ep_info,
	PARAM_EP, VERSION_1, 0);
	bl2_to_bl31_params->bl32_image_info =
	&bl31_params_mem->bl32_image_info;
	SET_PARAM_HEAD(bl2_to_bl31_params->bl32_image_info,
	PARAM_IMAGE_BINARY,
	VERSION_1, 0);
	}

	/* Fill BL33 related information */
	bl2_to_bl31_params->bl33_ep_info = &bl31_params_mem->bl33_ep_info;
	SET_PARAM_HEAD(bl2_to_bl31_params->bl33_ep_info,
	PARAM_EP, VERSION_1, 0);
	bl2_to_bl31_params->bl33_image_info = &bl31_params_mem->bl33_image_info;
	SET_PARAM_HEAD(bl2_to_bl31_params->bl33_image_info, PARAM_IMAGE_BINARY,
	VERSION_1, 0);

	return bl2_to_bl31_params;
	}


	/*******************************************************************************
	* This function returns a pointer to the shared memory that the platform
	* has kept to point to entry point information of BL31 to BL2
	******************************************************************************/
	struct entry_point_info *bl2_plat_get_bl31_ep_info(void)
	{
	#if DEBUG
	bl31_ep_info->args.arg1 = FVP_BL31_PLAT_PARAM_VAL;
	#endif
	return bl31_ep_info;
	}


	/*******************************************************************************
	* BL1 has passed the extents of the trusted SRAM that should be visible to BL2
	* in x0. This memory layout is sitting at the base of the free trusted SRAM.
	* Copy it to a safe loaction before its reclaimed by later BL2 functionality.
	******************************************************************************/
	void bl2_early_platform_setup(meminfo_t *mem_layout)
	{
	/* Initialize the console to provide early debug support */
	console_init(PL011_UART0_BASE);

	/* Setup the BL2 memory layout */
	bl2_tzram_layout = *mem_layout;

	/* Initialize the platform config for future decision making */
	fvp_config_setup();
	}

	/*******************************************************************************
	* Perform platform specific setup. For now just initialize the memory location
	* to use for passing arguments to BL31.
	******************************************************************************/
	void bl2_platform_setup(void)
	{
	/*
	* Do initial security configuration to allow DRAM/device access. On
	* Base FVP only DRAM security is programmable (via TrustZone), but
	* other platforms might have more programmable security devices
	* present.
	*/
	fvp_security_setup();

	/* Initialise the IO layer and register platform IO devices */
	fvp_io_setup();
	}

	/* Flush the TF params and the TF plat params */
	void bl2_plat_flush_bl31_params(void)
	{
	flush_dcache_range((unsigned long)PARAMS_BASE, \
	sizeof(bl2_to_bl31_params_mem_t));
	}


	/*******************************************************************************
	* Perform the very early platform specific architectural setup here. At the
	* moment this is only intializes the mmu in a quick and dirty way.
	******************************************************************************/
	void bl2_plat_arch_setup(void)
	{
	fvp_configure_mmu_el1(bl2_tzram_layout.total_base,
	bl2_tzram_layout.total_size,
	BL2_RO_BASE,
	BL2_RO_LIMIT,
	BL2_COHERENT_RAM_BASE,
	BL2_COHERENT_RAM_LIMIT);
	}

	/*******************************************************************************
	* Before calling this function BL31 is loaded in memory and its entrypoint
	* is set by load_image. This is a placeholder for the platform to change
	* the entrypoint of BL31 and set SPSR and security state.
	* On FVP we are only setting the security state, entrypoint
	******************************************************************************/
	void bl2_plat_set_bl31_ep_info(image_info_t *bl31_image_info,
	entry_point_info_t *bl31_ep_info)
	{
	SET_SECURITY_STATE(bl31_ep_info->h.attr, SECURE);
	bl31_ep_info->spsr = SPSR_64(MODE_EL3, MODE_SP_ELX,
	DISABLE_ALL_EXCEPTIONS);
	}


	/*******************************************************************************
	* Before calling this function BL32 is loaded in memory and its entrypoint
	* is set by load_image. This is a placeholder for the platform to change
	* the entrypoint of BL32 and set SPSR and security state.
	* On FVP we are only setting the security state, entrypoint
	******************************************************************************/
	void bl2_plat_set_bl32_ep_info(image_info_t *bl32_image_info,
	entry_point_info_t *bl32_ep_info)
	{
	SET_SECURITY_STATE(bl32_ep_info->h.attr, SECURE);
	bl32_ep_info->spsr = fvp_get_spsr_for_bl32_entry();
	}

	/*******************************************************************************
	* Before calling this function BL33 is loaded in memory and its entrypoint
	* is set by load_image. This is a placeholder for the platform to change
	* the entrypoint of BL33 and set SPSR and security state.
	* On FVP we are only setting the security state, entrypoint
	******************************************************************************/
	void bl2_plat_set_bl33_ep_info(image_info_t *image,
	entry_point_info_t *bl33_ep_info)
	{
	SET_SECURITY_STATE(bl33_ep_info->h.attr, NON_SECURE);
	bl33_ep_info->spsr = fvp_get_spsr_for_bl33_entry();
	}


	/*******************************************************************************
	* Populate the extents of memory available for loading BL32
	******************************************************************************/
	void bl2_plat_get_bl32_meminfo(meminfo_t *bl32_meminfo)
	{
	/*
	* Populate the extents of memory available for loading BL32.
	*/
	bl32_meminfo->total_base = BL32_BASE;
	bl32_meminfo->free_base = BL32_BASE;
	bl32_meminfo->total_size =
	(TSP_SEC_MEM_BASE + TSP_SEC_MEM_SIZE) - BL32_BASE;
	bl32_meminfo->free_size =
	(TSP_SEC_MEM_BASE + TSP_SEC_MEM_SIZE) - BL32_BASE;
	}


	/*******************************************************************************
	* Populate the extents of memory available for loading BL33
	******************************************************************************/
	void bl2_plat_get_bl33_meminfo(meminfo_t *bl33_meminfo)
	{
	bl33_meminfo->total_base = DRAM_BASE;
	bl33_meminfo->total_size = DRAM_SIZE - DRAM1_SEC_SIZE;
	bl33_meminfo->free_base = DRAM_BASE;
	bl33_meminfo->free_size = DRAM_SIZE - DRAM1_SEC_SIZE;
	}