src/bsp/lk/lib/aee/mrdump_sddev.c

/*
 * Copyright (c) 2018 MediaTek Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files
 * (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge,
 * publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include <lib/bio.h>
#include <malloc.h>
#include <platform/mtk_mrdump.h>
#include <stddef.h>
#include <stdint.h>
#include "aee.h"
#include "kdump.h"
#include "kdump_sdhc.h"

static char *part_device_init(struct mrdump_dev *dev, const char *part_name)
{
    dev->bdev = bio_open_by_label(part_name);

    if (!dev->bdev)
        return NULL;

    voprintf_info("%s size: %lu Mb\n", part_name, (dev->bdev->total_size) / 0x100000UL);

    return (char *) part_name;
}

static bool part_device_read(struct mrdump_dev *dev, uint64_t offset, uint8_t *buf, int32_t len)
{
    if (dev == NULL) {
        voprintf_error("%s dev is NULL!\n", __func__);
        return false;
    } else {
        return bio_read(dev->bdev, buf, offset, len) == len;
    }
}

static bool part_device_write(struct mrdump_dev *dev, uint64_t offset, uint8_t *buf, int32_t len)
{
    if (dev == NULL) {
        voprintf_error("%s dev is NULL!\n", __func__);
        return false;
    } else {
        return bio_write(dev->bdev, buf, offset, len) == len;
    }
}

struct mrdump_dev *mrdump_dev_emmc_vfat(void)
{
    char *fatpart;
    struct mrdump_dev *dev = malloc(sizeof(struct mrdump_dev));
    if (!dev) {
        voprintf_error("%s: malloc() failed!\n", __func__);
        return NULL;
    }

    fatpart = part_device_init(0, "intsd");
    if (fatpart == NULL) {
        voprintf_error("No VFAT partition found!\n");
        free(dev);
        return NULL;
    }
    dev->name = "emmc";
    dev->handle = fatpart;
    dev->read = part_device_read;
    dev->write = part_device_write;
    return dev;
}

static char *mrdump_get_ext4_partition(struct mrdump_dev *dev)
{
    char *ext4part;

    ext4part = part_device_init(dev, MRDUMP_OUTPUT_PARTITION);
    if (ext4part != NULL)
        return ext4part;

    return NULL;
}

struct mrdump_dev *mrdump_dev_emmc_ext4(void)
{
    char *ext4part;
    struct mrdump_dev *dev = malloc(sizeof(struct mrdump_dev));
    if (!dev) {
        voprintf_error("%s: malloc() failed!\n", __func__);
        return NULL;
    }

    ext4part = mrdump_get_ext4_partition(dev);
    if (ext4part == NULL) {
        voprintf_error("No EXT4 partition found!\n");
        free(dev);
        return NULL;
    }
    dev->name = "emmc";
    dev->handle = ext4part;
    dev->read = part_device_read;
    dev->write = part_device_write;
    return dev;
}


#if 0
static bool mrdump_dev_sdcard_read(struct mrdump_dev *dev, uint32_t sector_addr, uint8_t *pdBuf, int32_t blockLen)
{
    return mmc_wrap_bread(1, sector_addr, blockLen, pdBuf) == 1;
}

static bool mrdump_dev_sdcard_write(struct mrdump_dev *dev, uint32_t sector_addr, uint8_t *pdBuf, int32_t blockLen)
{
    return mmc_wrap_bwrite(1, sector_addr, blockLen, pdBuf) == 1;
}

struct mrdump_dev *mrdump_dev_sdcard(void)
{
    struct mrdump_dev *dev = malloc(sizeof(struct mrdump_dev));
    dev->name = "sdcard";
    dev->handle = NULL;
    dev->read = mrdump_dev_sdcard_read;
    dev->write = mrdump_dev_sdcard_write;

    mmc_legacy_init(2);
    return dev;
}
#endif