/* Copyright Statement:
*
* This software/firmware and related documentation ("MediaTek Software") are
* protected under relevant copyright laws. The information contained herein
* is confidential and proprietary to MediaTek Inc. and/or its licensors.
* Without the prior written permission of MediaTek inc. and/or its licensors,
* any reproduction, modification, use or disclosure of MediaTek Software,
* and information contained herein, in whole or in part, shall be strictly prohibited.
*/
/* MediaTek Inc. (C) 2015. All rights reserved.
*
* BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
* THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
* RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON
* AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
* NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
* SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
* SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH
* THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES
* THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES
* CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK
* SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR
* STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND
* CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
* AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
* OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO
* MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
*/
#include <printf.h>
#include <debug.h>
#include <malloc.h>
#include <string.h>
#include <platform/errno.h>
#include <platform/partition.h>
#include <part_interface.h>
#include <block_generic_interface.h>

struct checksum_info {
	u32 image_index;
	u32 pc_checksum;
	u32 da_checksum;
	char checksum_status[8];
};

struct image_info {
	char image_name[16];
};

struct dl_status {
	char magic_num[24];
	char version[8];
	struct checksum_info cs_info[PART_MAX_COUNT];
	char ram_checksum[16];
	char download_status[16];
	struct image_info img_info[PART_MAX_COUNT];
};

#define DL_PASS         (0)
#define DL_FAIL         (1)
#define DL_NOT_FOUND    (2)
#ifdef MTK_EMMC_SUPPORT
#define DL_INFO_SIZE    (8192) //Support EMMC GPT 128 partitions
#else
#define DL_INFO_SIZE    (2048)
#endif

int mmc_get_dl_info(void)
{
    struct dl_status download_info;
    u64 dl_addr;
    u8 *dl_buf;

    int i, err, loglevel;

	dl_addr = partition_get_size_by_name("flashinfo") - DL_INFO_SIZE;
    dprintf(ALWAYS, "[DL_INFO]get dl info from offset 0x%llx\n", dl_addr);

    dl_buf = (u8 *)calloc(1, DL_INFO_SIZE);
    if (!dl_buf) {
        dprintf(CRITICAL, "[DL_INFO]fail to calloc buffer(count=%d)\n", DL_INFO_SIZE);
        err = -ENOMEM;
        goto fail_malloc;
    }

	err = partition_read("flashinfo", dl_addr, dl_buf, DL_INFO_SIZE);
    if (err != DL_INFO_SIZE) {
        dprintf(CRITICAL, "[DL_INFO]fail to read data(%d)\n", err);
        err = -EIO;
        goto fail_read;
    }

    memcpy(&download_info, dl_buf, sizeof(download_info));

    if (memcmp(download_info.magic_num, "DOWNLOAD INFORMATION!!", 22)) {
        dprintf(CRITICAL, "[DL_INFO]fail to find DL INFO magic\n");
        err = DL_NOT_FOUND;
        goto fail_read;
    }

    if (!memcmp(download_info.download_status, "DL_DONE", 7) ||
        !memcmp(download_info.download_status, "DL_CK_DONE", 10)) {
        loglevel = INFO;
        loglevel = CRITICAL;
        err = DL_PASS;
    } else {
        loglevel = CRITICAL;
        err = DL_FAIL;
    }

    dprintf(loglevel, "[DL_INFO]version: %s\n", download_info.version);	
    dprintf(loglevel, "[DL_INFO]dl_status: %s\n", download_info.download_status);	
    dprintf(loglevel, "[DL_INFO]dram_checksum: %s\n", download_info.ram_checksum);
    for (i = 0; i < PART_MAX_COUNT; i++) {
        if (download_info.cs_info[i].image_index != 0) {
            dprintf(loglevel, "[DL_INFO]image:[%02d]%-12s, checksum: %s\n", 
                    download_info.cs_info[i].image_index,
                    download_info.img_info[i].image_name,
                    download_info.cs_info[i].checksum_status);
        }
    }

fail_read:
    free(dl_buf);
fail_malloc:
    //put_part(part);
    return err;
}