target/msm7630_surf/init.c - kernel/lk - Gitiles

 /*
  * Copyright (c) 2009, Google Inc.
  * All rights reserved.
  * Copyright (c) 2009-2011, The Linux Foundation. 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 Google, Inc. 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 OWNER 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 <debug.h>
 #include <dev/keys.h>
 #include <dev/gpio.h>
 #include <dev/ssbi.h>
 #include <lib/ptable.h>
 #include <dev/flash.h>
 #include <smem.h>
 #include <reg.h>
 #include <mmc.h>
 #include <platform/iomap.h>
 #include <platform/machtype.h>
 #if TARGET_USES_RSPIN_LOCK
 #include <platform/remote_spinlock.h>
 #endif
 #include <platform.h>
 #include <crypto_hash.h>

 #define MSM8255_ID                 74
 #define MSM8655_ID                 75
 #define APQ8055_ID                 85

 #define VARIABLE_LENGTH        0x10101010
 #define DIFF_START_ADDR        0xF0F0F0F0
 #define NUM_PAGES_PER_BLOCK    0x40

 static unsigned mmc_sdc_base[] =
     { MSM_SDC1_BASE, MSM_SDC2_BASE, MSM_SDC3_BASE, MSM_SDC4_BASE };

 static struct ptable flash_ptable;
 static int hw_platform_type = -1;

 /* Setting this variable to different values defines the
  * behavior of CE engine:
  * platform_ce_type = CRYPTO_ENGINE_TYPE_NONE : No CE engine
  * platform_ce_type = CRYPTO_ENGINE_TYPE_SW : Software CE engine
  * platform_ce_type = CRYPTO_ENGINE_TYPE_HW : Hardware CE engine
  * Behavior is determined in the target code.
  */
 static crypto_engine_type platform_ce_type = CRYPTO_ENGINE_TYPE_HW;

 /* for these partitions, start will be offset by either what we get from
  * smem, or from the above offset if smem is not useful. Also, we should
  * probably have smem_ptable code populate our flash_ptable.
  *
  * When smem provides us with a full partition table, we can get rid of
  * this altogether.
  *
  */
 static struct ptentry board_part_list[] = {
 	{
 	 .start = 0,
 	 .length = 10 /* In MB */ ,
 	 .name = "boot",
 	 },
 	{
 	 .start = DIFF_START_ADDR,
 	 .length = 256 /* In MB */ ,
 	 .name = "system",
 	 },
 	{
 	 .start = DIFF_START_ADDR,
 	 .length = 5 /* In MB */ ,
 	 .name = "cache",
 	 },
 	{
 	 .start = DIFF_START_ADDR,
 	 .length = 1 /* In MB */ ,
 	 .name = "misc",
 	 },
 	{
 	 .start = DIFF_START_ADDR,
 	 .length = 1 /* In MB */ ,
 	 .name = "devinfo",
 	 },
 	{
 	 .start = DIFF_START_ADDR,
 	 .length = VARIABLE_LENGTH,
 	 .name = "userdata",
 	 },
 	{
 	 .start = DIFF_START_ADDR,
 	 .length = 3 /* In MB */ ,
 	 .name = "persist",
 	 },
 	{
 	 .start = DIFF_START_ADDR,
 	 .length = 10 /* In MB */ ,
 	 .name = "recovery",
 	 },
 };

 static int num_parts = sizeof(board_part_list) / sizeof(struct ptentry);

 void smem_ptable_init(void);
 unsigned smem_get_apps_flash_start(void);
 unsigned smem_read_alloc_entry_offset(smem_mem_type_t, void *, int, int);

 void keypad_init(void);

 static int emmc_boot = -1;	/* set to uninitialized */
 int target_is_emmc_boot(void);
 static int platform_version = -1;
 static int target_msm_id = -1;
 static int interleaved_mode_enabled = -1;
 void enable_interleave_mode(int);

 int target_is_interleaved_mode(void)
 {
 	struct smem_board_info_v4 board_info_v4;
 	unsigned int board_info_len = 0;
 	unsigned smem_status;
 	char *build_type;
 	unsigned format = 0;

 	if (interleaved_mode_enabled != -1) {
 		return interleaved_mode_enabled;
 	}

 	smem_status = smem_read_alloc_entry_offset(SMEM_BOARD_INFO_LOCATION,
 						   &format, sizeof(format), 0);
 	if (!smem_status) {
 		if ((format == 3) || (format == 4)) {
 			if (format == 4)
 				board_info_len = sizeof(board_info_v4);
 			else
 				board_info_len =
 				    sizeof(board_info_v4.board_info_v3);

 			smem_status =
 			    smem_read_alloc_entry(SMEM_BOARD_INFO_LOCATION,
 						  &board_info_v4,
 						  board_info_len);
 			if (!smem_status) {
 				build_type =
 				    (char *)(board_info_v4.
 					     board_info_v3.build_id) + 9;

 				interleaved_mode_enabled = 0;

 				if (*build_type == 'C') {
 					interleaved_mode_enabled = 1;
 				}
 			}
 		}
 	}

 	return interleaved_mode_enabled;
 }

 void target_init(void)
 {
 	unsigned offset;
 	struct flash_info *flash_info;
 	unsigned total_num_of_blocks;
 	unsigned next_ptr_start_adr = 0;
 	unsigned blocks_per_1MB = 8;	/* Default value of 2k page size on 256MB flash drive */
 	unsigned base_addr;
 	unsigned char slot;
 	int i;

 	dprintf(INFO, "target_init()\n");

 #if TARGET_USES_RSPIN_LOCK
 	if(remote_spinlock_init(&rlock))
 		dprintf(SPEW,"Failed to Initialize remote spin locks\n");
 #endif

 #if (!ENABLE_NANDWRITE)
 	keys_init();
 	keypad_init();
 #endif

 	/* Display splash screen if enabled */
 #if DISPLAY_SPLASH_SCREEN
 	display_init();
 	dprintf(SPEW, "Diplay initialized\n");
 	display_image_on_screen();
 #endif

 	if (target_is_emmc_boot()) {
 		/* Must wait for modem-up before we can intialize MMC.
 		 */
 		while (readl(MSM_SHARED_BASE + 0x14) != 1) ;

 		/* Trying Slot 2 first */
 		slot = 2;
 		base_addr = mmc_sdc_base[slot - 1];
 		if (mmc_boot_main(slot, base_addr)) {
 			/* Trying Slot 4 next */
 			slot = 4;
 			base_addr = mmc_sdc_base[slot - 1];
 			if (mmc_boot_main(slot, base_addr)) {
 				dprintf(CRITICAL, "mmc init failed!");
 				ASSERT(0);
 			}
 		}
 		return;
 	}

 	ptable_init(&flash_ptable);
 	smem_ptable_init();

 	flash_init();
 	flash_info = flash_get_info();
 	ASSERT(flash_info);
 	enable_interleave_mode(target_is_interleaved_mode());

 	offset = smem_get_apps_flash_start();
 	if (offset == 0xffffffff)
 		while (1) ;

 	total_num_of_blocks = flash_info->num_blocks;
 	blocks_per_1MB = (1 << 20) / (flash_info->block_size);

 	for (i = 0; i < num_parts; i++) {
 		struct ptentry *ptn = &board_part_list[i];
 		unsigned len = ((ptn->length) * blocks_per_1MB);

 		if (ptn->start != 0)
 			ASSERT(ptn->start == DIFF_START_ADDR);

 		ptn->start = next_ptr_start_adr;

 		if (ptn->length == VARIABLE_LENGTH) {
 			unsigned length_for_prt = 0;
 			unsigned j;
 			for (j = i + 1; j < num_parts; j++) {
 				struct ptentry *temp_ptn = &board_part_list[j];
 				ASSERT(temp_ptn->length != VARIABLE_LENGTH);
 				length_for_prt +=
 				    ((temp_ptn->length) * blocks_per_1MB);
 			}
 			len =
 			    total_num_of_blocks - (offset + ptn->start +
 						   length_for_prt);
 			ASSERT(len >= 0);
 		}
 		next_ptr_start_adr = ptn->start + len;
 		if (target_is_interleaved_mode()) {
 			ptable_add(&flash_ptable, ptn->name,
 				   offset + (ptn->start / 2), (len / 2),
 				   ptn->flags, TYPE_APPS_PARTITION,
 				   PERM_WRITEABLE);
 		} else {
 			ptable_add(&flash_ptable, ptn->name,
 				   offset + ptn->start, len, ptn->flags,
 				   TYPE_APPS_PARTITION, PERM_WRITEABLE);
 		}
 	}

 	smem_add_modem_partitions(&flash_ptable);

 	ptable_dump(&flash_ptable);
 	flash_set_ptable(&flash_ptable);
 }

 int target_platform_version(void)
 {
 	return platform_version;
 }

 int target_is_msm8x55(void)
 {
 	if ((target_msm_id == MSM8255_ID) ||
 	    (target_msm_id == MSM8655_ID) || (target_msm_id == APQ8055_ID))
 		return 1;
 	else
 		return 0;
 }

 unsigned board_machtype(void)
 {
 	struct smem_board_info_v4 board_info_v4;
 	unsigned int board_info_len = 0;
 	enum platform platform_type = 0;
 	unsigned smem_status;
 	unsigned format = 0;
 	if (hw_platform_type != -1)
 		return hw_platform_type;

 	smem_status = smem_read_alloc_entry_offset(SMEM_BOARD_INFO_LOCATION,
 						   &format, sizeof(format), 0);
 	if (!smem_status) {
 		if ((format == 3) || (format == 4)) {
 			if (format == 4)
 				board_info_len = sizeof(board_info_v4);
 			else
 				board_info_len =
 				    sizeof(board_info_v4.board_info_v3);

 			smem_status =
 			    smem_read_alloc_entry(SMEM_BOARD_INFO_LOCATION,
 						  &board_info_v4,
 						  board_info_len);
 			if (!smem_status) {
 				if (format == 4)
 					platform_version =
 					    board_info_v4.platform_version;

 				platform_type =
 				    board_info_v4.board_info_v3.hw_platform;
 				target_msm_id =
 				    board_info_v4.board_info_v3.msm_id;
 				switch (platform_type) {
 				case HW_PLATFORM_SURF:
 					hw_platform_type =
 					    ((target_is_msm8x55())?
 					     LINUX_MACHTYPE_8x55_SURF :
 					     LINUX_MACHTYPE_7x30_SURF);
 					break;
 				case HW_PLATFORM_FFA:
 					hw_platform_type =
 					    ((target_is_msm8x55())?
 					     LINUX_MACHTYPE_8x55_FFA :
 					     LINUX_MACHTYPE_7x30_FFA);
 					break;
 				case HW_PLATFORM_FLUID:
 					hw_platform_type =
 					    LINUX_MACHTYPE_7x30_FLUID;
 					break;
 				case HW_PLATFORM_SVLTE:
 					hw_platform_type =
 					    LINUX_MACHTYPE_8x55_SVLTE_FFA;
 					break;
 				default:
 					hw_platform_type =
 					    ((target_is_msm8x55())?
 					     LINUX_MACHTYPE_8x55_SURF :
 					     LINUX_MACHTYPE_7x30_SURF);
 					break;
 				}
 				return hw_platform_type;
 			}
 		}
 	}
 	hw_platform_type = LINUX_MACHTYPE_7x30_SURF;
 	return hw_platform_type;
 }

 void reboot_device(unsigned reboot_reason)
 {
 	reboot(reboot_reason);
 }

 unsigned check_reboot_mode(void)
 {
 	unsigned mode[2] = { 0, 0 };
 	unsigned int mode_len = sizeof(mode);
 	unsigned smem_status;

 	smem_status = smem_read_alloc_entry(SMEM_APPS_BOOT_MODE,
 					    &mode, mode_len);
 	if (smem_status) {
 		dprintf(CRITICAL,
 			"ERROR: unable to read shared memory for reboot mode\n");
 		return 0;
 	}
 	return mode[0];
 }

 static unsigned target_check_power_on_reason(void)
 {
 	unsigned power_on_status = 0;
 	unsigned int status_len = sizeof(power_on_status);
 	unsigned smem_status;

 	smem_status = smem_read_alloc_entry(SMEM_POWER_ON_STATUS_INFO,
 					    &power_on_status, status_len);

 	if (smem_status) {
 		dprintf(CRITICAL,
 			"ERROR: unable to read shared memory for power on reason\n");
 	}

 	return power_on_status;
 }

 #if _EMMC_BOOT
 void target_serialno(unsigned char *buf)
 {
 	unsigned int serialno;
 	serialno = mmc_get_psn();
 	snprintf(buf, 13, "%x", serialno);
 }

 int emmc_recovery_init(void)
 {
 	int rc;
 	rc = _emmc_recovery_init();
 	return rc;
 }
 #endif

 crypto_engine_type board_ce_type(void)
 {
 	return platform_ce_type;
 }

 int machine_is_ffa()
 {
 	unsigned mach_type;
 	int ret = 0;

 	mach_type = board_machtype();
 	switch(mach_type) {
 	case LINUX_MACHTYPE_8x55_FFA:
 	case LINUX_MACHTYPE_7x30_FFA:
 		ret = 1;
 		break;
 	default:
 		ret = 0;
 	}
 	return ret;
 }
	/*
	* Copyright (c) 2009, Google Inc.
	* All rights reserved.
	* Copyright (c) 2009-2011, The Linux Foundation. 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 Google, Inc. 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 OWNER 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 <debug.h>
	#include <dev/keys.h>
	#include <dev/gpio.h>
	#include <dev/ssbi.h>
	#include <lib/ptable.h>
	#include <dev/flash.h>
	#include <smem.h>
	#include <reg.h>
	#include <mmc.h>
	#include <platform/iomap.h>
	#include <platform/machtype.h>
	#if TARGET_USES_RSPIN_LOCK
	#include <platform/remote_spinlock.h>
	#endif
	#include <platform.h>
	#include <crypto_hash.h>

	#define MSM8255_ID 74
	#define MSM8655_ID 75
	#define APQ8055_ID 85

	#define VARIABLE_LENGTH 0x10101010
	#define DIFF_START_ADDR 0xF0F0F0F0
	#define NUM_PAGES_PER_BLOCK 0x40

	static unsigned mmc_sdc_base[] =
	{ MSM_SDC1_BASE, MSM_SDC2_BASE, MSM_SDC3_BASE, MSM_SDC4_BASE };

	static struct ptable flash_ptable;
	static int hw_platform_type = -1;

	/* Setting this variable to different values defines the
	* behavior of CE engine:
	* platform_ce_type = CRYPTO_ENGINE_TYPE_NONE : No CE engine
	* platform_ce_type = CRYPTO_ENGINE_TYPE_SW : Software CE engine
	* platform_ce_type = CRYPTO_ENGINE_TYPE_HW : Hardware CE engine
	* Behavior is determined in the target code.
	*/
	static crypto_engine_type platform_ce_type = CRYPTO_ENGINE_TYPE_HW;

	/* for these partitions, start will be offset by either what we get from
	* smem, or from the above offset if smem is not useful. Also, we should
	* probably have smem_ptable code populate our flash_ptable.
	*
	* When smem provides us with a full partition table, we can get rid of
	* this altogether.
	*
	*/
	static struct ptentry board_part_list[] = {
	{
	.start = 0,
	.length = 10 /* In MB */ ,
	.name = "boot",
	},
	{
	.start = DIFF_START_ADDR,
	.length = 256 /* In MB */ ,
	.name = "system",
	},
	{
	.start = DIFF_START_ADDR,
	.length = 5 /* In MB */ ,
	.name = "cache",
	},
	{
	.start = DIFF_START_ADDR,
	.length = 1 /* In MB */ ,
	.name = "misc",
	},
	{
	.start = DIFF_START_ADDR,
	.length = 1 /* In MB */ ,
	.name = "devinfo",
	},
	{
	.start = DIFF_START_ADDR,
	.length = VARIABLE_LENGTH,
	.name = "userdata",
	},
	{
	.start = DIFF_START_ADDR,
	.length = 3 /* In MB */ ,
	.name = "persist",
	},
	{
	.start = DIFF_START_ADDR,
	.length = 10 /* In MB */ ,
	.name = "recovery",
	},
	};

	static int num_parts = sizeof(board_part_list) / sizeof(struct ptentry);

	void smem_ptable_init(void);
	unsigned smem_get_apps_flash_start(void);
	unsigned smem_read_alloc_entry_offset(smem_mem_type_t, void *, int, int);

	void keypad_init(void);

	static int emmc_boot = -1; /* set to uninitialized */
	int target_is_emmc_boot(void);
	static int platform_version = -1;
	static int target_msm_id = -1;
	static int interleaved_mode_enabled = -1;
	void enable_interleave_mode(int);

	int target_is_interleaved_mode(void)
	{
	struct smem_board_info_v4 board_info_v4;
	unsigned int board_info_len = 0;
	unsigned smem_status;
	char *build_type;
	unsigned format = 0;

	if (interleaved_mode_enabled != -1) {
	return interleaved_mode_enabled;
	}

	smem_status = smem_read_alloc_entry_offset(SMEM_BOARD_INFO_LOCATION,
	&format, sizeof(format), 0);
	if (!smem_status) {
	if ((format == 3) \|\| (format == 4)) {
	if (format == 4)
	board_info_len = sizeof(board_info_v4);
	else
	board_info_len =
	sizeof(board_info_v4.board_info_v3);

	smem_status =
	smem_read_alloc_entry(SMEM_BOARD_INFO_LOCATION,
	&board_info_v4,
	board_info_len);
	if (!smem_status) {
	build_type =
	(char *)(board_info_v4.
	board_info_v3.build_id) + 9;

	interleaved_mode_enabled = 0;

	if (*build_type == 'C') {
	interleaved_mode_enabled = 1;
	}
	}
	}
	}

	return interleaved_mode_enabled;
	}

	void target_init(void)
	{
	unsigned offset;
	struct flash_info *flash_info;
	unsigned total_num_of_blocks;
	unsigned next_ptr_start_adr = 0;
	unsigned blocks_per_1MB = 8; /* Default value of 2k page size on 256MB flash drive */
	unsigned base_addr;
	unsigned char slot;
	int i;

	dprintf(INFO, "target_init()\n");

	#if TARGET_USES_RSPIN_LOCK
	if(remote_spinlock_init(&rlock))
	dprintf(SPEW,"Failed to Initialize remote spin locks\n");
	#endif

	#if (!ENABLE_NANDWRITE)
	keys_init();
	keypad_init();
	#endif

	/* Display splash screen if enabled */
	#if DISPLAY_SPLASH_SCREEN
	display_init();
	dprintf(SPEW, "Diplay initialized\n");
	display_image_on_screen();
	#endif

	if (target_is_emmc_boot()) {
	/* Must wait for modem-up before we can intialize MMC.
	*/
	while (readl(MSM_SHARED_BASE + 0x14) != 1) ;

	/* Trying Slot 2 first */
	slot = 2;
	base_addr = mmc_sdc_base[slot - 1];
	if (mmc_boot_main(slot, base_addr)) {
	/* Trying Slot 4 next */
	slot = 4;
	base_addr = mmc_sdc_base[slot - 1];
	if (mmc_boot_main(slot, base_addr)) {
	dprintf(CRITICAL, "mmc init failed!");
	ASSERT(0);
	}
	}
	return;
	}

	ptable_init(&flash_ptable);
	smem_ptable_init();

	flash_init();
	flash_info = flash_get_info();
	ASSERT(flash_info);
	enable_interleave_mode(target_is_interleaved_mode());

	offset = smem_get_apps_flash_start();
	if (offset == 0xffffffff)
	while (1) ;

	total_num_of_blocks = flash_info->num_blocks;
	blocks_per_1MB = (1 << 20) / (flash_info->block_size);

	for (i = 0; i < num_parts; i++) {
	struct ptentry *ptn = &board_part_list[i];
	unsigned len = ((ptn->length) * blocks_per_1MB);

	if (ptn->start != 0)
	ASSERT(ptn->start == DIFF_START_ADDR);

	ptn->start = next_ptr_start_adr;

	if (ptn->length == VARIABLE_LENGTH) {
	unsigned length_for_prt = 0;
	unsigned j;
	for (j = i + 1; j < num_parts; j++) {
	struct ptentry *temp_ptn = &board_part_list[j];
	ASSERT(temp_ptn->length != VARIABLE_LENGTH);
	length_for_prt +=
	((temp_ptn->length) * blocks_per_1MB);
	}
	len =
	total_num_of_blocks - (offset + ptn->start +
	length_for_prt);
	ASSERT(len >= 0);
	}
	next_ptr_start_adr = ptn->start + len;
	if (target_is_interleaved_mode()) {
	ptable_add(&flash_ptable, ptn->name,
	offset + (ptn->start / 2), (len / 2),
	ptn->flags, TYPE_APPS_PARTITION,
	PERM_WRITEABLE);
	} else {
	ptable_add(&flash_ptable, ptn->name,
	offset + ptn->start, len, ptn->flags,
	TYPE_APPS_PARTITION, PERM_WRITEABLE);
	}
	}

	smem_add_modem_partitions(&flash_ptable);

	ptable_dump(&flash_ptable);
	flash_set_ptable(&flash_ptable);
	}

	int target_platform_version(void)
	{
	return platform_version;
	}

	int target_is_msm8x55(void)
	{
	if ((target_msm_id == MSM8255_ID) \|\|
	(target_msm_id == MSM8655_ID) \|\| (target_msm_id == APQ8055_ID))
	return 1;
	else
	return 0;
	}

	unsigned board_machtype(void)
	{
	struct smem_board_info_v4 board_info_v4;
	unsigned int board_info_len = 0;
	enum platform platform_type = 0;
	unsigned smem_status;
	unsigned format = 0;
	if (hw_platform_type != -1)
	return hw_platform_type;

	smem_status = smem_read_alloc_entry_offset(SMEM_BOARD_INFO_LOCATION,
	&format, sizeof(format), 0);
	if (!smem_status) {
	if ((format == 3) \|\| (format == 4)) {
	if (format == 4)
	board_info_len = sizeof(board_info_v4);
	else
	board_info_len =
	sizeof(board_info_v4.board_info_v3);

	smem_status =
	smem_read_alloc_entry(SMEM_BOARD_INFO_LOCATION,
	&board_info_v4,
	board_info_len);
	if (!smem_status) {
	if (format == 4)
	platform_version =
	board_info_v4.platform_version;

	platform_type =
	board_info_v4.board_info_v3.hw_platform;
	target_msm_id =
	board_info_v4.board_info_v3.msm_id;
	switch (platform_type) {
	case HW_PLATFORM_SURF:
	hw_platform_type =
	((target_is_msm8x55())?
	LINUX_MACHTYPE_8x55_SURF :
	LINUX_MACHTYPE_7x30_SURF);
	break;
	case HW_PLATFORM_FFA:
	hw_platform_type =
	((target_is_msm8x55())?
	LINUX_MACHTYPE_8x55_FFA :
	LINUX_MACHTYPE_7x30_FFA);
	break;
	case HW_PLATFORM_FLUID:
	hw_platform_type =
	LINUX_MACHTYPE_7x30_FLUID;
	break;
	case HW_PLATFORM_SVLTE:
	hw_platform_type =
	LINUX_MACHTYPE_8x55_SVLTE_FFA;
	break;
	default:
	hw_platform_type =
	((target_is_msm8x55())?
	LINUX_MACHTYPE_8x55_SURF :
	LINUX_MACHTYPE_7x30_SURF);
	break;
	}
	return hw_platform_type;
	}
	}
	}
	hw_platform_type = LINUX_MACHTYPE_7x30_SURF;
	return hw_platform_type;
	}

	void reboot_device(unsigned reboot_reason)
	{
	reboot(reboot_reason);
	}

	unsigned check_reboot_mode(void)
	{
	unsigned mode[2] = { 0, 0 };
	unsigned int mode_len = sizeof(mode);
	unsigned smem_status;

	smem_status = smem_read_alloc_entry(SMEM_APPS_BOOT_MODE,
	&mode, mode_len);
	if (smem_status) {
	dprintf(CRITICAL,
	"ERROR: unable to read shared memory for reboot mode\n");
	return 0;
	}
	return mode[0];
	}

	static unsigned target_check_power_on_reason(void)
	{
	unsigned power_on_status = 0;
	unsigned int status_len = sizeof(power_on_status);
	unsigned smem_status;

	smem_status = smem_read_alloc_entry(SMEM_POWER_ON_STATUS_INFO,
	&power_on_status, status_len);

	if (smem_status) {
	dprintf(CRITICAL,
	"ERROR: unable to read shared memory for power on reason\n");
	}

	return power_on_status;
	}

	#if _EMMC_BOOT
	void target_serialno(unsigned char *buf)
	{
	unsigned int serialno;
	serialno = mmc_get_psn();
	snprintf(buf, 13, "%x", serialno);
	}

	int emmc_recovery_init(void)
	{
	int rc;
	rc = _emmc_recovery_init();
	return rc;
	}
	#endif

	crypto_engine_type board_ce_type(void)
	{
	return platform_ce_type;
	}

	int machine_is_ffa()
	{
	unsigned mach_type;
	int ret = 0;

	mach_type = board_machtype();
	switch(mach_type) {
	case LINUX_MACHTYPE_8x55_FFA:
	case LINUX_MACHTYPE_7x30_FFA:
	ret = 1;
	break;
	default:
	ret = 0;
	}
	return ret;
	}