u-boot-2016/arch/arm/cpu/armv7/qca/common/smem.c

/*
 * Copyright (c) 2013, 2015-2017, 2020 The Linux Foundation. All rights reserved.
 *
 * Based on smem.c from lk.
 *
 * Copyright (c) 2009, Google Inc.
 * 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.
 *
 * 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 <common.h>
#include <asm/io.h>
#include <asm/errno.h>
#include <linux/sizes.h>
#include <asm/arch-qca-common/smem.h>
#include <nand.h>
#include "fdt_info.h"
#include <ubi_uboot.h>
#include <command.h>

#ifdef IPQ_UBI_VOL_WRITE_SUPPORT
static struct ubi_device *ubi;
#endif

extern unsigned int get_spi_flash_size(void);

typedef struct smem_pmic_type
{
	unsigned pmic_model;
	unsigned pmic_die_revision;
}pmic_type;

typedef struct qca_platform_v1 {
	unsigned format;
	unsigned id;
	unsigned version;
	char     build_id[BUILD_ID_LEN];
	unsigned raw_id;
	unsigned raw_version;
	unsigned hw_platform;
	unsigned platform_version;
	unsigned accessory_chip;
	unsigned hw_platform_subtype;
}qca_platform_v1;

typedef struct qca_platform_v2 {
	qca_platform_v1 v1;
	pmic_type pmic_info[3];
	unsigned foundry_id;
}qca_platform_v2;

typedef struct qca_platform_v3 {
	qca_platform_v2 v2;
	unsigned chip_serial;
} qca_platform_v3;

union qca_platform {
	qca_platform_v1 v1;
	qca_platform_v2 v2;
	qca_platform_v3 v3;
};

struct smem_proc_comm {
	unsigned command;
	unsigned status;
	unsigned data1;
	unsigned data2;
};

struct smem_heap_info {
	unsigned initialized;
	unsigned free_offset;
	unsigned heap_remaining;
	unsigned reserved;
};

struct smem_alloc_info {
	unsigned allocated;
	unsigned offset;
	unsigned size;
	unsigned reserved;
};

struct smem_machid_info {
	unsigned format;
	unsigned machid;
};

struct smem {
	struct smem_proc_comm proc_comm[4];
	unsigned version_info[32];
	struct smem_heap_info heap_info;
	struct smem_alloc_info alloc_info[SMEM_MAX_SIZE];
};

#define ALIGN_LEN	0x00000007

#define SMEM_PTN_NAME_MAX     16
#define SMEM_PTABLE_PARTS_MAX 32
#define SMEM_PTABLE_PARTS_DEFAULT 16

struct smem_ptn {
	char name[SMEM_PTN_NAME_MAX];
	unsigned start;
	unsigned size;
	unsigned attr;
} __attribute__ ((__packed__));

#define __str_fmt(x)		"%-" #x "s"
#define _str_fmt(x)		__str_fmt(x)
#define smem_ptn_name_fmt	_str_fmt(SMEM_PTN_NAME_MAX)

struct smem_ptable {
#define _SMEM_PTABLE_MAGIC_1 0x55ee73aa
#define _SMEM_PTABLE_MAGIC_2 0xe35ebddb
	unsigned magic[2];
	unsigned version;
	unsigned len;
	struct smem_ptn parts[SMEM_PTABLE_PARTS_MAX];
} __attribute__ ((__packed__));

/* partition table from SMEM */
static struct smem_ptable smem_ptable;

static struct smem *smem = (void *)(CONFIG_QCA_SMEM_BASE);

qca_smem_flash_info_t qca_smem_flash_info;
qca_smem_bootconfig_info_t qca_smem_bootconfig_info;

#ifdef CONFIG_SMEM_VERSION_C

#define SMEM_COMMON_HOST	0xFFFE
#ifndef CONFIG_QCA_SMEM_SIZE
	#define CONFIG_QCA_SMEM_SIZE	0x100000
#endif

enum {
	smem_enu_sucess,
	smem_enu_failed,
	smem_enu_no_init
};

u8 smem_enumeration_status = smem_enu_no_init;

/**
 * struct smem_ptable_entry - one entry in the @smem_ptable list
 * @offset:	offset, within the main shared memory region, of the partition
 * @size:	size of the partition
 * @flags:	flags for the partition (currently unused)
 * @host0:	first processor/host with access to this partition
 * @host1:	second processor/host with access to this partition
 * @reserved:	reserved entries for later use
 */
struct smem_ptable_entry {
	__le32 offset;
	__le32 size;
	__le32 flags;
	__le16 host0;
	__le16 host1;
	__le32 reserved[8];
};

/**
 * struct smem_private_ptable - partition table for the private partitions
 * @magic:      magic number, must be SMEM_PTABLE_MAGIC
 * @version:    version of the partition table
 * @num_entries: number of partitions in the table
 * @reserved:   for now reserved entries
 * @entry:      list of @smem_ptable_entry for the @num_entries partitions
 */
struct smem_private_ptable {
	u8 magic[4];
	__le32 version;
	__le32 num_entries;
	__le32 reserved[5];
	struct smem_ptable_entry entry[];
};

/**
 * struct smem_private_entry - header of each item in the private partition
 * @canary:     magic number, must be SMEM_PRIVATE_CANARY
 * @item:       identifying number of the smem item
 * @size:       size of the data, including padding bytes
 * @padding_data: number of bytes of padding of data
 * @padding_hdr: number of bytes of padding between the header and the data
 * @reserved:   for now reserved entry
 */
struct smem_private_entry {
	u16 canary; /* bytes are the same so no swapping needed */
	__le16 item;
	__le32 size; /* includes padding bytes */
	__le16 padding_data;
	__le16 padding_hdr;
	__le32 reserved;
};

#define SMEM_PRIVATE_CANARY	0xa5a5

static const u8 SMEM_PTABLE_MAGIC[] = { 0x24, 0x54, 0x4f, 0x43 }; /* "$TOC" */
/**
 * struct smem_partition_header - header of the partitions
 * @magic:	magic number, must be SMEM_PART_MAGIC
 * @host0:	first processor/host with access to this partition
 * @host1:	second processor/host with access to this partition
 * @size:	size of the partition
 * @offset_free_uncached: offset to the first free byte of uncached memory in
 *		this partition
 * @offset_free_cached: offset to the first free byte of cached memory in this
 *		partition
 * @reserved:	for now reserved entries
 */
struct smem_partition_header {
	u8 magic[4];
	__le16 host0;
	__le16 host1;
	__le32 size;
	__le32 offset_free_uncached;
	__le32 offset_free_cached;
	__le32 reserved[3];
};

static const u8 SMEM_PART_MAGIC[] = { 0x24, 0x50, 0x52, 0x54 };		/*$PRT*/

struct smem_partition_header *smem_cmn_partition;

/* Pointer to the one and only smem handle */

static struct smem_private_entry *
phdr_to_first_private_entry(struct smem_partition_header *phdr)
{
	void *p = phdr;

	return p + sizeof(*phdr);
}

static struct smem_private_entry *
phdr_to_last_private_entry(struct smem_partition_header *phdr)
{
	void *p = phdr;

	return p + le32_to_cpu(phdr->offset_free_uncached);
}

static struct smem_private_entry *
private_entry_next(struct smem_private_entry *e)
{
	void *p = e;

	return p + sizeof(*e) + le16_to_cpu(e->padding_hdr) +
				le32_to_cpu(e->size);
}

static void *entry_to_item(struct smem_private_entry *e)
{
	void *p = e;

	return p + sizeof(*e) + le16_to_cpu(e->padding_hdr);
}

static void *qcom_smem_get_private(struct smem_partition_header *phdr,
							unsigned item,
							size_t *size)
{
	struct smem_private_entry *e, *end;

	e = phdr_to_first_private_entry(phdr);
	end = phdr_to_last_private_entry(phdr);

	while (e < end) {
		if (e->canary != SMEM_PRIVATE_CANARY) {
		printf("Found invalid canary in\
				host common partition\n");
		return ERR_PTR(-EINVAL);
		}
		if (le16_to_cpu(e->item) == item) {
			if (size != NULL)
				*size = le32_to_cpu(e->size) -
					le16_to_cpu(e->padding_data);

			return entry_to_item(e);
		}

		e = private_entry_next(e);
	}
	return ERR_PTR(-ENOENT);
}

static int qcom_smem_enumerate_partitions(void)
{
	struct smem_partition_header *header;
	struct smem_ptable_entry *entry;
	struct smem_private_ptable *ptable;
	u32 version, host0, host1;
	int i;

	ptable = (struct smem_private_ptable*) (CONFIG_QCA_SMEM_BASE + \
					CONFIG_QCA_SMEM_SIZE - SZ_4K);
	if (memcmp(ptable->magic, SMEM_PTABLE_MAGIC, sizeof(ptable->magic)))
		return -EINVAL;

	version = le32_to_cpu(ptable->version);
	if (version != 1) {
		printf("Unsupported partition header version %d\n", version);
		return -EINVAL;
	}
	for (i = 0; i < le32_to_cpu(ptable->num_entries); i++) {
		entry = &ptable->entry[i];
		host0 = le16_to_cpu(entry->host0);
		host1 = le16_to_cpu(entry->host1);

		if (host0 != SMEM_COMMON_HOST || host1 != SMEM_COMMON_HOST)
			continue;

		if (!le32_to_cpu(entry->offset))
			continue;
		printf("\noffset: 0X%X %u", entry->offset, entry->offset);

		if (!le32_to_cpu(entry->size))
			continue;
		printf("\nsize: 0X%X %u", entry->size, entry->size);

		if (smem_cmn_partition) {
			printf("Already found a partition for host %x \n",
				SMEM_COMMON_HOST);
			return -EINVAL;
		}

		header = (struct smem_partition_header*) (CONFIG_QCA_SMEM_BASE + \
							le32_to_cpu(entry->offset));
		host0 = le16_to_cpu(header->host0);
		host1 = le16_to_cpu(header->host1);

		if (memcmp(header->magic, SMEM_PART_MAGIC,
			    sizeof(header->magic))) {
			printf("Partition %d has invalid magic\n", i);
			return -EINVAL;
		}

		if (host0 != SMEM_COMMON_HOST || host1 != SMEM_COMMON_HOST) {
			printf("Partition %d hosts are invalid\n", i);
			return -EINVAL;
		}

		if (header->size != entry->size) {
			printf("Partition %d has invalid size\n", i);
			return -EINVAL;
		}

		if (le32_to_cpu(header->offset_free_uncached) > le32_to_cpu(header->size)) {
			printf("Partition %d has invalid free pointer\n", i);
			return -EINVAL;
		}

		smem_cmn_partition = header;
	}
	smem_enumeration_status = smem_enu_sucess;
	return 0;
}
#endif

/**
 * smem_read_alloc_entry - reads an entry from SMEM
 * @type: the entry to read
 * @buf: the buffer location where the data will be stored
 * @len: the size of the buffer
 *
 * Reads and stores the entry in @buf. Returns 0 on success and 1 on
 * failure.
 *
 * NOTE: buf MUST be 4byte aligned, and len MUST be a multiple of 8.
 */
unsigned smem_read_alloc_entry(smem_mem_type_t type, void *buf, int len)
{
	struct smem_alloc_info *ainfo;
	unsigned *dest = buf;
	unsigned src;
	unsigned size;
#ifdef CONFIG_SMEM_VERSION_C
	void *ptr;
	int ret;
#endif

	if (((len & 0x3) != 0) || (((unsigned)buf & 0x3) != 0))
		return 1;

	if (type < SMEM_FIRST_VALID_TYPE || type > SMEM_LAST_VALID_TYPE)
	{
		return 1;
	}

#ifdef CONFIG_SMEM_VERSION_C
	if(smem_enumeration_status == smem_enu_no_init) {
		ret = qcom_smem_enumerate_partitions();
		if (ret) {
			printf("Common SMEM Partition is not available\n");
			smem_enumeration_status = smem_enu_failed;
			return ret;
		}
	}

        if ( smem_enumeration_status == smem_enu_sucess) {
		ptr = qcom_smem_get_private(smem_cmn_partition,type, &size);
		if (IS_ERR(ptr)) {
			ret =  PTR_ERR(ptr);
			return ret;
		}
		memcpy(dest, ptr, len);
		return 0;
	}
	return -EINVAL;
#endif
	ainfo = &smem->alloc_info[type];
	if (readl(&ainfo->allocated) == 0)
	{
		return 1;
	}

	size = readl(&ainfo->size);

	if (size != (unsigned)((len + 7) & ~ALIGN_LEN))
	{
		return 1;
	}

	src = CONFIG_QCA_SMEM_BASE + readl(&ainfo->offset);
	for (; len > 0; src += 4, len -= 4)
		*(dest++) = readl(src);

	return 0;
}

/**
 * smem_ptable_init - initializes SMEM partition table
 *
 * Initialize partition table from SMEM.
 */
int smem_ptable_init(void)
{
	unsigned ret;

	ret = smem_read_alloc_entry(SMEM_AARM_PARTITION_TABLE,
				    &smem_ptable, sizeof(smem_ptable));

	if (ret != 0) {
		/*
		 * Trying for max partition 16 in case of smem_read_alloc_entry fails
		 */
		ret = smem_read_alloc_entry(SMEM_AARM_PARTITION_TABLE, &smem_ptable,
			sizeof(smem_ptable) - (sizeof(struct smem_ptn) * SMEM_PTABLE_PARTS_DEFAULT));
	}
	if (ret != 0)
		return -ENOMSG;

	if (smem_ptable.magic[0] != _SMEM_PTABLE_MAGIC_1 ||
		smem_ptable.magic[1] != _SMEM_PTABLE_MAGIC_2)
		return -ENOMSG;

	debug("smem ptable found: ver: %d len: %d\n",
	      smem_ptable.version, smem_ptable.len);

	return 0;
}

/**
 * mibib_ptable_init - initializes SMEM partition table
 *
 * Initialize partition table from MIBIB.
 */
#ifdef CONFIG_IPQ_MIBIB_RELOAD
int mibib_ptable_init(unsigned int* addr)
{
	struct smem_ptable* ptable;

	ptable = (struct smem_ptable*) addr;
	if (ptable->magic[0] != _SMEM_PTABLE_MAGIC_1 ||
		ptable->magic[1] != _SMEM_PTABLE_MAGIC_2)
		return -ENOMSG;

	debug("smem ptable found: ver: %d len: %d\n",
	      smem_ptable.version, smem_ptable.len);

	memcpy(&smem_ptable, addr, sizeof(smem_ptable));

	return 0;
}
#endif

/*
 * smem_bootconfig_info - retrieve bootconfig flags
 */
int smem_bootconfig_info(void)
{
	unsigned ret;

	ret = smem_read_alloc_entry(SMEM_BOOT_DUALPARTINFO,
			&qca_smem_bootconfig_info, sizeof(qca_smem_bootconfig_info_t));
	if ((ret != 0) ||
		((qca_smem_bootconfig_info.magic_start != _SMEM_DUAL_BOOTINFO_MAGIC_START) &&
		(qca_smem_bootconfig_info.magic_start != _SMEM_DUAL_BOOTINFO_MAGIC_START_TRYMODE)))
		return -ENOMSG;

	return 0;
}

#ifndef CONFIG_SDHCI_SUPPORT
extern qca_mmc mmc_host;
#else
extern struct sdhci_host mmc_host;
#endif

unsigned int get_rootfs_active_partition(void)
{
	int i;

	for (i = 0; i < qca_smem_bootconfig_info.numaltpart; i++) {
		if (strncmp("rootfs", qca_smem_bootconfig_info.per_part_entry[i].name,
			     ALT_PART_NAME_LENGTH) == 0)
			return qca_smem_bootconfig_info.per_part_entry[i].primaryboot;
	}

	return 0; /* alt partition not available */
}
#ifdef CONFIG_CMD_NAND
/*
 * get nand block size by device id.
 * dev_id is 0 for parallel nand.
 * dev_id is 1 for spi nand.
 */
uint32_t get_nand_block_size(uint8_t dev_id)
{
	struct mtd_info *mtd;

	mtd = &nand_info[dev_id];

	return mtd->erasesize;
}
#endif
/*
 * get flash block size based on partition name.
 */
static inline uint32_t get_flash_block_size(char *name,
					    qca_smem_flash_info_t *smem)
{
#ifdef CONFIG_CMD_NAND
	return (get_which_flash_param(name) == 1) ?
		get_nand_block_size(is_spi_nand_available())
		: smem->flash_block_size;
#else
	return smem->flash_block_size;
#endif
}

#define part_which_flash(p)    (((p)->attr & 0xff000000) >> 24)

static inline uint32_t get_part_block_size(struct smem_ptn *p,
					   qca_smem_flash_info_t *sfi)
{
#ifdef CONFIG_CMD_NAND
        return (part_which_flash(p) == 1) ?
		get_nand_block_size(is_spi_nand_available())
		: sfi->flash_block_size;
#else
	return sfi->flash_block_size;
#endif
}

void qca_set_part_entry(char *name, qca_smem_flash_info_t *smem,
		qca_part_entry_t *part, uint32_t start, uint32_t size)
{
	uint32_t bsize = get_flash_block_size(name, smem);
	part->offset = ((loff_t)start) * bsize;
	part->size = ((loff_t)size) * bsize;
}

static inline uint32_t get_device_id_by_part(struct smem_ptn *p)
{
	return (part_which_flash(p) == 1) ?
		is_spi_nand_available() : CONFIG_SPI_FLASH_INFO_IDX;
}

__weak unsigned int get_smem_spi_addr_len(void)
{
	return SPI_DEFAULT_ADDR_LEN;
}

unsigned int get_partition_table_offset(void)
{
	int ret;
	uint32_t primary_mibib;

	ret = smem_read_alloc_entry(SMEM_PARTITION_TABLE_OFFSET,
					&primary_mibib, sizeof(uint32_t));
	if (ret != 0) {
		primary_mibib = 0;
	}

	return primary_mibib;
}

/*
 * smem_getpart_from_offset - retreive partition start and size for given offset
 * belongs to.
 * @part_name: offset for which part start and size needed
 * @start: location where the start offset is to be stored
 * @size: location where the size is to be stored
 *
 * Returns 0 at success or -ENOENT otherwise.
 */
int smem_getpart_from_offset(uint32_t offset, uint32_t *start, uint32_t *size)
{
	unsigned i;
	qca_smem_flash_info_t *sfi = &qca_smem_flash_info;
	struct smem_ptn *p;
	uint32_t bsize;

	for (i = 0; i < smem_ptable.len; i++) {
		p = &smem_ptable.parts[i];
		*start = p->start;
		bsize = get_part_block_size(p, sfi);

		if (p->size == (~0u)) {
		/*
		 * Partition size is 'till end of device', calculate
		 * appropriately
		 */
#ifdef CONFIG_CMD_NAND
			*size = (nand_info[get_device_id_by_part(p)].size /
				 bsize) - p->start;
#else
			*size = 0;
			bsize = bsize;
#endif
		} else {
			*size = p->size;
		}
		*start = *start * bsize;
		*size = *size * bsize;
		if (*start <= offset && *start + *size > offset) {
			return 0;
		}
	}

	return -ENOENT;

}
/*
 * smem_getpart - retreive partition start and size
 * @part_name: partition name
 * @start: location where the start offset is to be stored
 * @size: location where the size is to be stored
 *
 * Retreive the start offset in blocks and size in blocks, of the
 * specified partition.
 */
int smem_getpart(char *part_name, uint32_t *start, uint32_t *size)
{
	unsigned i;
	qca_smem_flash_info_t *sfi = &qca_smem_flash_info;
	struct smem_ptn *p;
	uint32_t bsize;

	for (i = 0; i < smem_ptable.len; i++) {
		if (!strncmp(smem_ptable.parts[i].name, part_name,
			     SMEM_PTN_NAME_MAX))
			break;
	}
	if (i == smem_ptable.len)
		return -ENOENT;

	p = &smem_ptable.parts[i];
	bsize = get_part_block_size(p, sfi);

	*start = p->start;

	if (p->size == (~0u)) {
		/*
		 * Partition size is 'till end of device', calculate
		 * appropriately
		 */
#ifdef CONFIG_CMD_NAND
		*size = (nand_info[get_device_id_by_part(p)].size /
			 bsize) - p->start;
#else
		*size = 0;
		bsize = bsize;
#endif
	} else {
		*size = p->size;
	}

	return 0;
}

/*
 * smem_get_boot_flash - retreive the boot flash info
 * @flash_type: location where the flash type is to be stored
 * @flash_index: location where the flash index is to be stored
 * @flash_chip_select: location where the flash chip select is to be stored
 * @flash_block_size: location where the block size is to be stored
 * @flash_density: location where the flash size is to be stored
 *
 * Retreive the flash type and flash index, of the boot flash.
 */
int smem_get_boot_flash(uint32_t *flash_type,
			uint32_t *flash_index,
			uint32_t *flash_chip_select,
			uint32_t *flash_block_size,
			uint32_t *flash_density)
{
	int ret;

	ret = smem_read_alloc_entry(SMEM_BOOT_FLASH_TYPE,
				    flash_type, sizeof(uint32_t));
	if (ret != 0) {
		printf("smem: read flash type failed\n");
		*flash_type = SMEM_BOOT_NO_FLASH;
	}

	ret = smem_read_alloc_entry(SMEM_BOOT_FLASH_INDEX,
				    flash_index, sizeof(uint32_t));
	if (ret != 0) {
		printf("smem: read flash index failed\n");
		*flash_index = 0;
	}

	ret = smem_read_alloc_entry(SMEM_BOOT_FLASH_CHIP_SELECT,
				    flash_chip_select, sizeof(uint32_t));
	if (ret != 0) {
		printf("smem: read flash chip select failed\n");
		*flash_chip_select = 0;
	}

	ret = smem_read_alloc_entry(SMEM_BOOT_FLASH_BLOCK_SIZE,
				    flash_block_size, sizeof(uint32_t));
	if (ret != 0) {
		printf("smem: read flash block size failed\n");
		*flash_block_size = 0;
	}
	ret = smem_read_alloc_entry(SMEM_BOOT_FLASH_DENSITY,
				flash_density, sizeof(uint32_t));
	if (ret != 0) {
		printf("smem: read flash density failed\n");
		*flash_density = 0;
	}

	return 0;
}

int ipq_smem_get_boot_version(char *version_name, int buf_size)
{
	int ret;
	qca_platform_v1 platform_info;

	ret = smem_read_alloc_entry(SMEM_HW_SW_BUILD_ID, &platform_info,
					sizeof(qca_platform_v1));
	if (ret != 0)
		return -ENOMSG;

	snprintf(version_name, buf_size, "%s\n", platform_info.build_id);
	return ret;
}

int ipq_smem_get_boot_flash(uint32_t *flash_name)
{
	int ret;

	ret = smem_read_alloc_entry(SMEM_BOOT_FLASH_TYPE,
				flash_name, sizeof(uint32_t));
	if (ret != 0)
		return -ENOMSG;

	return ret;
}

int smem_get_build_version(char *version_name, int buf_size, int index)
{
	int ret;
	struct version_entry version_entry[32];

	ret = smem_read_alloc_entry(SMEM_IMAGE_VERSION_TABLE,
                        &version_entry, sizeof(version_entry));
	if (ret != 0)
		return -ENOMSG;

	snprintf(version_name, buf_size, "%s-%s\n",
			version_entry[index].oem_version_string,
			version_entry[index].version_string);

	return ret;
}

unsigned int smem_read_platform_type(union qca_platform *platform_type)
{
	unsigned status;

	status = smem_read_alloc_entry(SMEM_HW_SW_BUILD_ID, platform_type,
				       sizeof(qca_platform_v1));
	if (!status)
		return status;

	debug("smem: Mapping platform type v1 failed. Trying v2...\n");
	status = smem_read_alloc_entry(SMEM_HW_SW_BUILD_ID,
				       platform_type,
				       sizeof(qca_platform_v2));
	if (!status)
		return status;

	debug("smem: Mapping platform type v2 failed. Trying v3...\n");
	status = smem_read_alloc_entry(SMEM_HW_SW_BUILD_ID,
				       platform_type,
				       sizeof(qca_platform_v3));
	return status;
}

__weak unsigned int get_dts_machid(unsigned int machid)
{
	return machid;
}

unsigned int smem_get_board_platform_type()
{
	union qca_platform platform_type;
	struct smem_machid_info machid_info;
	unsigned int machid = 0;

	if (!smem_read_alloc_entry(SMEM_MACHID_INFO_LOCATION,
				   &machid_info, sizeof(machid_info))) {
		machid = machid_info.machid;
		return machid;
	}

	if (!smem_read_alloc_entry(SMEM_HW_SW_BUILD_ID,
				  &platform_type, sizeof(qca_platform_v2)) ||
	    !smem_read_alloc_entry(SMEM_HW_SW_BUILD_ID,
				  &platform_type, sizeof(qca_platform_v3)))  {
		machid = ((platform_type.v1.hw_platform << 24) |
			  ((SOCINFO_VERSION_MAJOR(platform_type.v1.platform_version)) << 16) |
			  ((SOCINFO_VERSION_MINOR(platform_type.v1.platform_version)) << 8) |
			  (platform_type.v1.hw_platform_subtype));

		return machid;
	}
	printf("smem: Failed to fetch the board machid.\n");
	return 0;
}

int ipq_smem_get_socinfo_cpu_type(uint32_t *cpu_type)
{
	unsigned int smem_status;
	union qca_platform platform_type;

	smem_status = smem_read_platform_type(&platform_type);

	if (!smem_status) {
		*cpu_type = platform_type.v1.id;
		debug("smem: socinfo - cpu type = %d\n",*cpu_type);
	} else {
		printf("smem: Get socinfo - cpu type failed\n");
	}

	return smem_status;
}

int ipq_smem_get_socinfo_version(uint32_t *version)
{
	unsigned int smem_status;
	union qca_platform platform_type;

	smem_status = smem_read_platform_type(&platform_type);

	if (!smem_status) {
		*version = platform_type.v1.version;
		debug("smem: socinfo - version = 0x%x\n",*version);
	} else {
		printf("smem: Get socinfo - version failed\n");
	}

	return smem_status;
}

/*
 * smem_ptable_init - initializes RAM partition table from SMEM
 *
 */
int smem_ram_ptable_init(struct smem_ram_ptable *smem_ram_ptable)
{
	unsigned i;

	i = smem_read_alloc_entry(SMEM_USABLE_RAM_PARTITION_TABLE,
				smem_ram_ptable,
				sizeof(struct smem_ram_ptable));
	if (i != 0)
		return 0;

	if (smem_ram_ptable->magic[0] != _SMEM_RAM_PTABLE_MAGIC_1 ||
		smem_ram_ptable->magic[1] != _SMEM_RAM_PTABLE_MAGIC_2)
		return 0;

	printf("smem ram ptable found: ver: %d len: %d\n",
		smem_ram_ptable->version, smem_ram_ptable->len);


	return 1;
}

/*
 * smem_ptable_init - initializes RAM partition table from SMEM
 *
 */
#ifdef CONFIG_SMEM_VERSION_C
int smem_ram_ptable_init_v2(struct usable_ram_partition_table *usable_ram_partition_table)
{
	unsigned i;

	i = smem_read_alloc_entry(SMEM_USABLE_RAM_PARTITION_TABLE,
				usable_ram_partition_table,
				sizeof(struct usable_ram_partition_table));
	if (i != 0)
		return 0;

	if (usable_ram_partition_table->magic1 != _SMEM_RAM_PTABLE_MAGIC_1 ||
		usable_ram_partition_table->magic2 != _SMEM_RAM_PTABLE_MAGIC_2) {
		return 0;
	}
	return 1;
}
#endif

void qca_smem_part_to_mtdparts(char *mtdid, int len)
{
	qca_smem_flash_info_t *sfi = &qca_smem_flash_info;
	int i, ret;
	int device_id = 0;
	char *part = mtdid, *unit;
	int init = 0;
	uint32_t bsize;

	ret = snprintf(part, len, "%s:", mtdid);
	part += ret;
	len -= ret;

	for (i = 0; i < smem_ptable.len && len > 0; i++) {
		struct smem_ptn *p = &smem_ptable.parts[i];
		loff_t psize;
		bsize = get_part_block_size(p, sfi);

		if (part_which_flash(p) && init == 0) {
			device_id = is_spi_nand_available();
			ret = snprintf(part, len, ";nand%d:", device_id);
			part += ret;
			len -= ret;
			init = 1;
		}
		if (p->size == (~0u)) {
			/*
			 * Partition size is 'till end of device', calculate
			 * appropriately
			 */
#ifdef CONFIG_CMD_NAND
			psize = (nand_info[get_device_id_by_part(p)].size
					- (((loff_t)p->start) * bsize));
#else
			psize = 0;
#endif
		} else {
			psize =  ((loff_t)p->size) * bsize;
		}

		if ((psize > SZ_1M) && (((psize & (SZ_1M - 1)) == 0))) {
			psize /= SZ_1M;
			unit = "M@";
		} else if ((psize > SZ_1K) && (((psize & (SZ_1K - 1)) == 0))) {
			psize /= SZ_1K;
			unit = "K@";
		} else {
			unit = "@";
		}

		ret = snprintf(part, len, "%lld%s0x%llx(%s),", psize, unit,
				((loff_t)p->start) * bsize, p->name);
		part += ret;
		len -= ret;
	}

	if (i == 0)
		*mtdid = '\0';

	*(part-1) = 0;	/* Remove the trailing ',' character */
}

/*
 * retrieve the which_flash flag based on partition name.
 * flash_var is 1 if partition is in NAND.
 * flash_var is 0 if partition is in NOR.
 */
unsigned int get_which_flash_param(char *part_name)
{
	int i;
	int flash_var = 0;

	for (i = 0; i < smem_ptable.len; i++) {
		struct smem_ptn *p = &smem_ptable.parts[i];
		if (strcmp(p->name, part_name) == 0)
			flash_var = part_which_flash(p);
	}

	return flash_var;
}

/*
 * getpart_offset_size - retreive partition offset and size
 * @part_name - partition name
 * @offset - location where the offset of partition to be stored
 * @size - location where partition size to be stored
 *
 * Retreive partition offset and size in bytes with respect to the
 * partition specific flash block size
 */
int getpart_offset_size(char *part_name, uint32_t *offset, uint32_t *size)
{
	int i;
	uint32_t bsize;
	qca_smem_flash_info_t *sfi = &qca_smem_flash_info;

	for (i = 0; i < smem_ptable.len; i++) {
		struct smem_ptn *p = &smem_ptable.parts[i];
		loff_t psize;
		if (!strncmp(p->name, part_name, SMEM_PTN_NAME_MAX)) {
			bsize = get_part_block_size(p, sfi);
			if (p->size == (~0u)) {
				/*
				 * Partition size is 'till end of device', calculate
				 * appropriately
				 */
#ifdef CONFIG_CMD_NAND
				psize = nand_info[get_device_id_by_part(p)].size
					- (((loff_t)p->start) * bsize);
#else
				psize = 0;
#endif
			} else {
				psize = ((loff_t)p->size) * bsize;
			}

		*offset = ((loff_t)p->start) * bsize;
		*size = psize;
		break;
		}
	}

	if (i == smem_ptable.len)
		return -ENOENT;

	return 0;
}

#ifdef IPQ_UBI_VOL_WRITE_SUPPORT
int ubi_set_rootfs_part(void)
{
	int ret;
	uint32_t offset;
	uint32_t part_size = 0;
	uint32_t size_block, start_block;
	qca_smem_flash_info_t *sfi = &qca_smem_flash_info;
	char runcmd[256];
	int i;

	if (((sfi->flash_type == SMEM_BOOT_NAND_FLASH) ||
		(sfi->flash_type == SMEM_BOOT_QSPI_NAND_FLASH))) {
		ret = smem_getpart(QCA_ROOT_FS_PART_NAME,
				&start_block, &size_block);
		if (ret)
			return ret;

		offset = sfi->flash_block_size * start_block;
		part_size = sfi->flash_block_size * size_block;
	} else if (sfi->flash_type == SMEM_BOOT_SPI_FLASH &&
				get_which_flash_param(QCA_ROOT_FS_PART_NAME)) {
		ret = getpart_offset_size(QCA_ROOT_FS_PART_NAME, &offset,
								&part_size);
		if (ret)
			return ret;
	}

	if (!part_size)
		return -ENOENT;

	if (ubi) {
		for (i = 0; i < ubi->vtbl_slots; i++) {
			if (ubi->volumes[i]) {
				kfree(ubi->volumes[i]->eba_tbl);
				kfree(ubi->volumes[i]);
				ubi->volumes[i] = NULL;
			}
		}
	}

	snprintf(runcmd, sizeof(runcmd),
		 "nand device %d && "
		 "setenv mtdids nand%d=nand%d && "
		 "setenv mtdparts mtdparts=nand%d:0x%x@0x%x(fs),${msmparts} && "
		 "ubi part fs && ", is_spi_nand_available(),
		 is_spi_nand_available(),
		 is_spi_nand_available(),
		 is_spi_nand_available(),
		 part_size, offset);

	if (run_command(runcmd, 0) != CMD_RET_SUCCESS)
		return CMD_RET_FAILURE;

	if (ubi) {
		kfree(ubi);
		ubi = NULL;
	}

	ubi = ubi_devices[0];
	return 0;
}

static void print_ubi_vol_info(void)
{
	int i;
	int j=0;
	struct ubi_volume *vol;

	for (i = 0; i < (ubi->vtbl_slots + 1); i++) {
		vol = ubi->volumes[i];
		if (!vol)
			continue;	/* Empty record */
		if (vol->name_len <= UBI_VOL_NAME_MAX && strnlen(vol->name,
			vol->name_len + 1) == vol->name_len) {
			printf("\tubi vol %d %s\n", vol->vol_id, vol->name);
			j++;
		} else {
			printf("\tubi vol %d %c%c%c%c%c\n",
				vol->vol_id, vol->name[0], vol->name[1],
				vol->name[2], vol->name[3], vol->name[4]);
			j++;
		}
		if (j == ubi->vol_count - UBI_INT_VOL_COUNT)
			break;
	}
}
#endif

int check_flash_exceed(struct smem_ptn *p, uint32_t offset, uint32_t psize) {

	uint32_t fsize = 0;
	qca_smem_flash_info_t *sfi = &qca_smem_flash_info;
	uint32_t flash_type = sfi->flash_type;

	if(flash_type == SMEM_BOOT_SPI_FLASH)
		 flash_type = part_which_flash(p) ?  SMEM_BOOT_QSPI_NAND_FLASH :
							SMEM_BOOT_SPI_FLASH;

	switch (flash_type) {
	case SMEM_BOOT_SPI_FLASH:
		fsize = get_spi_flash_size();
		break;
#ifdef CONFIG_CMD_NAND
	case SMEM_BOOT_NAND_FLASH:
	case SMEM_BOOT_QSPI_NAND_FLASH:
		fsize = nand_info[CONFIG_QPIC_NAND_NAND_INFO_IDX].size;
		break;
#endif
	default:
		return -1;
	}

	if (offset + psize > fsize)
		return -1;

	return 0;
}

int do_smeminfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	qca_smem_flash_info_t *sfi = &qca_smem_flash_info;
	int i,ret;
	uint32_t bsize;
#ifdef IPQ_UBI_VOL_WRITE_SUPPORT
	ubi_set_rootfs_part();
#endif
	if(sfi->flash_density != 0) {
		printf(	"flash_type:		0x%x\n"
			"flash_index:		0x%x\n"
			"flash_chip_select:	0x%x\n"
			"flash_block_size:	0x%x\n"
			"flash_density:		0x%x\n"
			"partition table offset	0x%x\n",
				sfi->flash_type, sfi->flash_index,
				sfi->flash_chip_select, sfi->flash_block_size,
				sfi->flash_density, get_partition_table_offset());
	} else {
		printf(	"flash_type:		0x%x\n"
			"flash_index:		0x%x\n"
			"flash_chip_select:	0x%x\n"
			"flash_block_size:	0x%x\n"
			"partition table offset	0x%x\n",
				sfi->flash_type, sfi->flash_index,
				sfi->flash_chip_select, sfi->flash_block_size,
				get_partition_table_offset());
	}

	if (smem_ptable.len > 0) {
		printf("%-3s: " smem_ptn_name_fmt " %10s %16s %16s\n",
			"No.", "Name", "Attributes", "Start", "Size");
	} else {
		printf("Partition information not available\n");
	}

	for (i = 0; i < smem_ptable.len; i++) {
		struct smem_ptn *p = &smem_ptable.parts[i];
		loff_t psize;
		bsize = get_part_block_size(p, sfi);

		if (p->size == (~0u)) {
			/*
			 * Partition size is 'till end of device', calculate
			 * appropriately
			 */
#ifdef CONFIG_CMD_NAND
			psize = nand_info[get_device_id_by_part(p)].size
				- (((loff_t)p->start) * bsize);
#else
			psize = 0;
#endif
		} else {
			psize = ((loff_t)p->size) * bsize;
		}

		/* skip printing the partition that exceeds flash size */
		ret = check_flash_exceed(p, ((loff_t)p->start) * bsize, psize);
		if (ret)
			continue;

		printf("%3d: " smem_ptn_name_fmt " 0x%08x %#16llx %#16llx\n",
		       i, p->name, p->attr, ((loff_t)p->start) * bsize, psize);
#ifdef IPQ_UBI_VOL_WRITE_SUPPORT
		if (!strncmp(p->name, QCA_ROOT_FS_PART_NAME, SMEM_PTN_NAME_MAX)
		    && ubi) {
			print_ubi_vol_info();
		}
#endif
	}
	return 0;
}

U_BOOT_CMD(
	smeminfo,    1,    1,    do_smeminfo,
	"print SMEM FLASH information",
	"\n    - print flash details gathered from SMEM\n"
);