/*
 * 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 <reg.h>
#include <debug.h>
#include <dev/keys.h>
#include <lib/ptable.h>
#include <dev/flash.h>
#include <smem.h>
#include <mmc.h>
#include <platform/iomap.h>
#include <platform.h>

#define LINUX_MACHTYPE_7x27_SURF    2705
#define LINUX_MACHTYPE_7x27_FFA     2706


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

static struct ptable flash_ptable;
static unsigned mmc_sdc_base[] = { MSM_SDC1_BASE, MSM_SDC2_BASE, MSM_SDC3_BASE, MSM_SDC4_BASE};
static int hw_platform_type = -1;

/* 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 = 5 /* In MB */,
		.name = "boot",
	},
	{
		.start = DIFF_START_ADDR,
		.length = 180 /* In MB */,
		.name = "system",
	},
	{
		.start = DIFF_START_ADDR,
		.length = 4 /* In MB */,
		.name = "cache",
	},
	{
		.start = DIFF_START_ADDR,
		.length = 4 /* In MB */,
		.name = "misc",
	},
	{
		.start = DIFF_START_ADDR,
		.length = VARIABLE_LENGTH,
		.name = "userdata",
	},
	{
		.start = DIFF_START_ADDR,
		.length = 2 /* In MB */,
		.name = "persist",
	},
	{
		.start = DIFF_START_ADDR,
		.length = 5 /* 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);

void keypad_init(void);

int target_is_emmc_boot(void);


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 char slot;
	unsigned int base_addr;
	int i;

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

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

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

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

		/* Trying SDC3 first */
		slot = 3;
		base_addr = mmc_sdc_base[slot - 1];
		if(mmc_boot_main(slot, base_addr))
		{
			/* Trying SDC1 next */
			slot = 1;
			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);

	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;
		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);
}

unsigned board_machtype(void)
{
   struct smem_board_info_v2 board_info_v2;
   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 == 2)
       {
           board_info_len = sizeof(board_info_v2);

           smem_status = smem_read_alloc_entry(SMEM_BOARD_INFO_LOCATION,
                              &board_info_v2, board_info_len);
           if(!smem_status)
           {
               char *build_type = (char *)(board_info_v2.build_id)+ 12;
               switch (*build_type)
               {
                   case 'F':
                       hw_platform_type = LINUX_MACHTYPE_7x27_FFA;    break;
                   case 'S':
                       hw_platform_type = LINUX_MACHTYPE_7x27_SURF;    break;
                   default:
                       hw_platform_type = LINUX_MACHTYPE_7x27_SURF;    break;
               }
           }
       }
   } else {
       hw_platform_type = LINUX_MACHTYPE_7x27_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();
	sprintf(buf,"%x",serialno);
}

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