// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
 * Copyright (c) 2019 Amlogic, Inc. All rights reserved.
 */

#include <common.h>
#include <command.h>
#include <environment.h>
#include <malloc.h>
#include <asm/byteorder.h>
#include <config.h>
#include <asm/arch/io.h>
#include <amlogic/storage.h>
#include <stdlib.h>
#include <amlogic/store_wrapper.h>

#ifdef CONFIG_BOOTLOADER_CONTROL_BLOCK

#define COMMANDBUF_SIZE 32
#define STATUSBUF_SIZE      32
#define RECOVERYBUF_SIZE 768

#define BOOTINFO_OFFSET 864
#define RESERVED_OFFSET 896
#define SLOTBUF_SIZE    32
#define MISCBUF_SIZE  1088

#define CMD_WIPE_DATA          "wipe_data"
#define CMD_SYSTEM_CRASH    "system_crash"
#define CMD_RUN_RECOVERY   "boot-recovery"
#define CMD_RESIZE_DATA    "resize2fs_data"
#define CMD_FOR_RECOVERY "recovery_"
#define CMD_FASTBOOTD          "fastbootd"
#define CMD_RECOVERY_WIPE      "prompt_and_wipe_data"
#define CMD_FACTORY          "factory"
#define CMD_BIST             "bist"

static const char *  const temp_for_compile[] = {"__test1", "__test2", "__test3", NULL};
extern const char * const _env_list_execute_[0] __attribute__((weak, alias("temp_for_compile")));

struct bootloader_message {
    char command[32];
    char status[32];
    char recovery[768];

    // The 'recovery' field used to be 1024 bytes.  It has only ever
    // been used to store the recovery command line, so 768 bytes
    // should be plenty.  We carve off the last 256 bytes to store the
    // stage string (for multistage packages) and possible future
    // expansion.
    char stage[32];
    char slot_suffix[32];
    char reserved[192];
};

#ifdef CONFIG_CMD_BCB
static bool env_command_check(const char *cmd)
{
    int index = 0;
    int envListNum = 0;
    char *s = NULL;
    char *v = NULL;
    char *strcopy = NULL;
    const char **envListArr = (const char **)_env_list_execute_;

    const char **pArr = (const char **)envListArr;

    while (*pArr++) {
	++envListNum;
    }

    printf("envListNum = %d\n", envListNum);

    if (envListNum == 0) {
	return false;
    }

    strcopy = strdup(cmd);
    if (!strcopy) {
	return false;
    }

    s = strcopy;
    while ((v = strsep(&s, ";")) !=  NULL) {
	char *p = v;

	strsep(&p, " ");
	for (index = 0; index < envListNum; index++) {
	if (!strcmp(envListArr[index], v)) {
		break;
	}
	}

	if (index == envListNum) {
	    printf("%s not in the white list.\n", v);
	    free(strcopy);
	    strcopy = NULL;
	return false;
	}
    }

    free(strcopy);
    strcopy = NULL;
    return true;
}
#endif

/**
 * @usage: write data to storage device for nand flash
 *
 * @name: partition name, when it's null the target
 *        will regards as whole device.
 * @off: offset to the 0 address of partition/device
 * @size: the amount of bytes to write
 * @buf: pointer of source buffer
 *
 * @return: result of the operation
 *          0 = success
 *          other = fail
 */
int nand_store_write(const char *name, loff_t off, size_t size, void *buf)
{
	int ret = -1;
	u64 rc = 0;
	unsigned char *buffer = NULL;
	u64 sz = 0;
	rc = store_logic_cap(name);
	if (rc == 1) {
		printf("Failed to get partition[%s] size\n", name);
		return ret;
	}
	sz = rc;// save the size
	buffer = (unsigned char *)malloc(rc);

	if (!buffer) {
		printf("ERROR! fail to allocate memory ...\n");
		goto exit;
	}
	memset(buffer, 0, rc);

	/* 1. read all data from the partition table */
	if (store_read(name, 0, rc, buffer) < 0) {
		printf("Fail to read %s partition\n", name);
		goto exit;
	}

	/* 2. update buffer data */
	memcpy(buffer + off, buf, size);

	/* 3. erase partition */
	rc = store_erase(name, 0, 0, 0);
	if (rc) {
		printf("Fail erase partition %s\n", name);
		goto exit;
	}
	// here the rc is 0, should use sz instead
	/* 4.write data back to the partitioned table */
	if (store_write((const char *)name, 0, sz, (unsigned char *)buffer) < 0) {
		printf("failed to write data to %s.\n", name);
		goto exit;
	} else {
		ret = 0;
	}

exit:
	if (buffer)
		free(buffer);

	return ret;
}

static int clear_misc_partition(char *clearbuf, int size)
{
    char *partition = "misc";

    memset(clearbuf, 0, size);

	if (store_get_type() == BOOT_SNAND || store_get_type() == BOOT_NAND_MTD) {
		if (nand_store_write((const char *)partition, 0,
				size, (unsigned char *)clearbuf) < 0) {
			printf("failed to clear %s for nand flash.\n", partition);
			return -1;
		}
	} else {
		if (store_write((const char *)partition,
			0, size, (unsigned char *)clearbuf) < 0) {
			printf("failed to clear %s.\n", partition);
			return -1;
		}
	}


    return 0;
}

static int my_atoi(const char *str)
{
	int result = 0;
	int signal = 1;

	if ((*str >= '0' && *str <= '9') || *str == '-' || *str == '+') {
		if (*str == '-' || *str == '+') {
			if (*str == '-')
				signal = -1;
			str++;
		}
	} else {
		return 0;
	}

	while (*str >= '0' && *str <= '9')
		result = result * 10 + (*str++ - '0');

	return signal * result;
}

static int do_RunBcbCommand(
    cmd_tbl_t * cmdtp,
    int flag,
    int argc,
    char * const argv[])
{
    int i = 0;
    char command[COMMANDBUF_SIZE] = {0};
    char status[STATUSBUF_SIZE] = {0};
    char recovery[RECOVERYBUF_SIZE] = {0};
    char miscbuf[MISCBUF_SIZE] = {0};
    char clearbuf[COMMANDBUF_SIZE+STATUSBUF_SIZE+RECOVERYBUF_SIZE] = {0};
    char* RebootMode;
	char *Powermode;
	int remain_time = 0;

    if (argc != 2) {
        return cmd_usage(cmdtp);
    }

    printf("Command: ");
    for (i = 0; i < argc; i++) {
        printf("%s ", argv[i]);
    }
    printf("\n");

    char *partition = "misc";
    char *command_mark = (char *)argv[1];

    if (strlen(command_mark) > sizeof(command)) {
        //printf("Bcb command mark range out of length(%d > %d).\n",
            //strlen(command_mark), sizeof(command));
        goto ERR;
    }

    if (!memcmp(command_mark, CMD_WIPE_DATA, strlen(command_mark))) {
        printf("Start to write --wipe_data to %s\n", partition);
        memcpy(miscbuf, CMD_RUN_RECOVERY, sizeof(CMD_RUN_RECOVERY));
        memcpy(miscbuf+sizeof(command)+sizeof(status), "recovery\n--wipe_data", sizeof("recovery\n--wipe_data"));

		if (store_get_type() == BOOT_SNAND || store_get_type() == BOOT_NAND_MTD) {
			nand_store_write((const char *)partition, 0, sizeof(miscbuf),
								(unsigned char *)miscbuf);
		} else {
			store_write((const char *)partition, 0, sizeof(miscbuf),
							(unsigned char *)miscbuf);
		}
    } else if (!memcmp(command_mark, CMD_SYSTEM_CRASH, strlen(command_mark))) {
        printf("Start to write --system_crash to %s\n", partition);
        memcpy(miscbuf, CMD_RUN_RECOVERY, sizeof(CMD_RUN_RECOVERY));
        memcpy(miscbuf+sizeof(command)+sizeof(status), "recovery\n--system_crash", sizeof("recovery\n--system_crash"));

		if (store_get_type() == BOOT_SNAND || store_get_type() == BOOT_NAND_MTD) {
			nand_store_write((const char *)partition, 0, sizeof(miscbuf),
								(unsigned char *)miscbuf);
		} else {
			store_write((const char *)partition, 0, sizeof(miscbuf),
							(unsigned char *)miscbuf);
		}
    } else if (!memcmp(command_mark, CMD_RESIZE_DATA, strlen(command_mark))) {
        printf("Start to write --resize2fs_data to %s\n", partition);
        memcpy(miscbuf, CMD_RUN_RECOVERY, sizeof(CMD_RUN_RECOVERY));
        memcpy(miscbuf+sizeof(command)+sizeof(status), "recovery\n--resize2fs_data", sizeof("recovery\n--resize2fs_data"));

		if (store_get_type() == BOOT_SNAND || store_get_type() == BOOT_NAND_MTD) {
			nand_store_write((const char *)partition, 0, sizeof(miscbuf),
								(unsigned char *)miscbuf);
		} else {
			store_write((const char *)partition, 0, sizeof(miscbuf),
							(unsigned char *)miscbuf);
		}
    } else if (!memcmp(command_mark, CMD_FOR_RECOVERY, strlen(CMD_FOR_RECOVERY))) {
        memcpy(miscbuf, CMD_RUN_RECOVERY, sizeof(CMD_RUN_RECOVERY));
        sprintf(recovery, "%s%s", "recovery\n--", command_mark);
        memcpy(miscbuf+sizeof(command)+sizeof(status), recovery, strlen(recovery));

		if (store_get_type() == BOOT_SNAND || store_get_type() == BOOT_NAND_MTD) {
			nand_store_write((const char *)partition, 0, sizeof(miscbuf),
								(unsigned char *)miscbuf);
		} else {
			store_write((const char *)partition, 0, sizeof(miscbuf),
							(unsigned char *)miscbuf);
		}
        return 0;
    } else if (!memcmp(command_mark, CMD_FASTBOOTD, strlen(command_mark))) {
        printf("write cmd to enter fastbootd \n");
        memcpy(miscbuf, CMD_RUN_RECOVERY, sizeof(CMD_RUN_RECOVERY));
        memcpy(miscbuf+sizeof(command)+sizeof(status), "recovery\n--fastboot", sizeof("recovery\n--fastboot"));

		if (store_get_type() == BOOT_SNAND || store_get_type() == BOOT_NAND_MTD) {
			nand_store_write((const char *)partition, 0, sizeof(miscbuf),
								(unsigned char *)miscbuf);
		} else {
			store_write((const char *)partition, 0, sizeof(miscbuf),
							(unsigned char *)miscbuf);
		}
        return 0;
	} else if (IS_ENABLED(CONFIG_FACTORY_BURN_MODE) &&
		!memcmp(command_mark, CMD_FACTORY, strlen(command_mark))) {
		printf("write cmd to enter factory mode\n");
		memcpy(miscbuf, CMD_RUN_RECOVERY, sizeof(CMD_RUN_RECOVERY));
		memcpy(miscbuf + sizeof(command) + sizeof(status),
			"recovery\n--factory", sizeof("recovery\n--factory"));

		if (store_get_type() == BOOT_SNAND || store_get_type() == BOOT_NAND_MTD) {
			nand_store_write((const char *)partition, 0, sizeof(miscbuf),
								(unsigned char *)miscbuf);
		} else {
			store_write((const char *)partition, 0, sizeof(miscbuf),
							(unsigned char *)miscbuf);
		}

		env_set("factory_mode", "1");
#if CONFIG_IS_ENABLED(AML_UPDATE_ENV)
		run_command("update_env_part -p factory_mode;", 0);
#else
		run_command("saveenv;", 0);
#endif
		run_command("reboot factory;", 0);
	} else if (IS_ENABLED(CONFIG_BIST_MODE) &&
		!memcmp(command_mark, CMD_BIST, strlen(command_mark))) {
		printf("write cmd to enter bist mode\n");
		memcpy(miscbuf, CMD_RUN_RECOVERY, sizeof(CMD_RUN_RECOVERY));
		memcpy(miscbuf + sizeof(command) + sizeof(status),
			"recovery\n--bist", sizeof("recovery\n--bist"));

		if (store_get_type() == BOOT_SNAND || store_get_type() == BOOT_NAND_MTD) {
			nand_store_write((const char *)partition, 0, sizeof(miscbuf),
								(unsigned char *)miscbuf);
		} else {
			store_write((const char *)partition, 0, sizeof(miscbuf),
							(unsigned char *)miscbuf);
		}

		env_set("bist_mode", "1");
#if CONFIG_IS_ENABLED(AML_UPDATE_ENV)
		run_command("update_env_part -p bist_mode;", 0);
#else
		run_command("saveenv;", 0);
#endif
		run_command("reboot Diagnostic;", 0);
    }

    printf("Start read %s partition datas!\n", partition);
    if (store_read((const char *)partition,
        0, sizeof(miscbuf), (unsigned char *)miscbuf) < 0) {
        printf("failed to store read %s.\n", partition);
        goto ERR;
    }

#ifdef CONFIG_BOOTLOADER_SHOW_ERRCODE
	char rsvbuf[64];

	memset(rsvbuf, 0, 64);
	strncpy(rsvbuf, miscbuf + RESERVED_OFFSET, 63);

	if (strlen(rsvbuf)) {
		char cmdbuf[256];

		sprintf(cmdbuf, "errcode mode '%s'", rsvbuf);
		printf("cmdbuf:%s\n", cmdbuf);
		run_command(cmdbuf, 0);
	}
#endif

    // judge misc partition whether has datas
    char tmpbuf[MISCBUF_SIZE];
    memset(tmpbuf, 0, sizeof(tmpbuf));
	if (!memcmp(tmpbuf, miscbuf, strlen(miscbuf))) {
		env_set("retry_recovery_times", "7");
#if CONFIG_IS_ENABLED(AML_UPDATE_ENV)
		run_command("update_env_part -p retry_recovery_times;", 0);
#else
		run_command("saveenv;", 0);
#endif
        printf("BCB hasn't any datas,exit!\n");
        return 0;
    }

    memcpy(command, miscbuf, sizeof(command));
    memcpy(status, miscbuf+sizeof(command), sizeof(status));
    memcpy(recovery, miscbuf+sizeof(command)+sizeof(status), sizeof(recovery));
    memcpy(clearbuf, miscbuf, sizeof(clearbuf));

    printf("get bootloader message from misc partition:\n");
    printf("[command:%s]\n[status:%s]\n[recovery:%s]\n",
            command, status, recovery);

    run_command("get_rebootmode", 0);
    RebootMode = env_get("reboot_mode");
	if (RebootMode && strstr(RebootMode, "quiescent")) {
		printf("quiescent mode.\n");
        run_command("run storeargs", 0);
	run_command("setenv bootconfig ${bootconfig} androidboot.quiescent=1;", 0);
    }

	Powermode = env_get("powermode");
	if (RebootMode && !strcmp(RebootMode, "cold_boot")) {
		if (Powermode && !strcmp(Powermode, "standby")) {
			printf("cold_boot default standby, ignore recovery mode\n");
			return 0;
		}
	}

	if (!memcmp(command, CMD_RUN_RECOVERY, strlen(CMD_RUN_RECOVERY))) {
		char *retry_times;
		char *retest_times;

		retry_times = env_get("retry_recovery_times");
		if (retry_times) {
			printf("retry_time: %s\n", retry_times);
			remain_time = my_atoi(retry_times);
			printf("retry_time remain_time = %d\n", remain_time);
		}

		if (remain_time == 0) {
			printf("clear recovery cmds in misc\n");
			if (clear_misc_partition(clearbuf, sizeof(clearbuf)) < 0) {
				printf("clear misc partition failed.\n");
				goto ERR;
			}
			env_set("retry_recovery_times", "7");
#if CONFIG_IS_ENABLED(AML_UPDATE_ENV)
			run_command("update_env_part -p retry_recovery_times;", 0);
#else
			run_command("saveenv;", 0);
#endif
			run_command("run enter_fastboot", 0);
		}

		if (IS_ENABLED(CONFIG_FACTORY_BURN_MODE)) {
			char *factory_mode;

			factory_mode = env_get("factory_mode");
			if (factory_mode && !strcmp(factory_mode, "1")) {
				printf("clear recovery cmds for factory mode\n");
				if (clear_misc_partition(clearbuf, sizeof(clearbuf)) < 0) {
					printf("clear misc partition failed.\n");
					goto ERR;
				}
			}
		}
		if (IS_ENABLED(CONFIG_BIST_MODE)) {
			char *bist_mode;

			bist_mode = env_get("bist_mode");
			if (bist_mode && !strcmp(bist_mode, "1")) {
				printf("clear recovery cmds for bist mode\n");
				if (clear_misc_partition(clearbuf, sizeof(clearbuf)) < 0) {
					printf("clear misc partition failed.\n");
					goto ERR;
				}
			}
		}

		if (retry_times && remain_time > 0) {
			sprintf(retry_times, "%d", remain_time - 1);
			printf("retry_time: %s\n", retry_times);
			env_set("retry_recovery_times", retry_times);
#if CONFIG_IS_ENABLED(AML_UPDATE_ENV)
			run_command("update_env_part -p retry_recovery_times;", 0);
#else
			run_command("saveenv;", 0);
#endif
		}

		retest_times = env_get("retest_times");

		if (strstr(recovery, CMD_RECOVERY_WIPE) &&
			retest_times && (strcmp(retest_times, "2") == 0)) {
			char *rebootmode = env_get("reboot_mode");

			printf("enter recovery first time, try again\n");
			if (clear_misc_partition(clearbuf, sizeof(clearbuf)) < 0) {
				printf("clear misc partition failed.\n");
				goto ERR;
			}

			run_command("set_retest_times 1;", 0);

			if (rebootmode && (strcmp(rebootmode, "quiescent") == 0))
				run_command("reboot quiescent", 0);
			else
				run_command("reboot", 0);
			return 0;
		}

#ifdef CONFIG_BOOTLOADER_SHOW_ERRCODE
		char cmdbuf[256];
		char *reason = strstr(recovery, "reason");

		if (reason) {
			sprintf(cmdbuf, "errcode misc %s", reason);
			run_command(cmdbuf, 0);
		}
#endif

        if (run_command("run recovery_from_flash", 0) < 0) {
            printf("run_command for cmd:run recovery_from_flash failed.\n");
            return -1;
        }
        printf("run command:run recovery_from_flash successful.\n");
        return 0;
    }

#ifdef CONFIG_CMD_BCB
    //uboot-command only valid once, not matter success or not
    if (clear_misc_partition(clearbuf, sizeof(clearbuf)) < 0) {
	printf("clear misc partition failed.\n");
	goto ERR;
    }

    if (!memcmp(command_mark, command, strlen(command_mark))) {
        printf("%s\n", recovery);
        if (run_command((char *)recovery, 0) < 0) {
            printf("run_command for cmd:%s failed.\n", recovery);
            goto ERR;
        }
        printf("run command successful.\n");
    }  else if (!strncmp(command_mark, "uboot-command", strlen("uboot-command"))) {
		printf("uboot-command: %s\n", command);

		if (!env_command_check(command)) {
			printf("not all uboot-command in white-list\n");
			goto ERR;
		}
		if (run_command((char *)command, 0) < 0) {
			printf("run_command for cmd:%s failed.\n", command);
			goto ERR;
		}
		printf("run uboot-command successful.\n");

    } else {
        printf("command mark(%s) not match %s,don't execute.\n",
            command_mark, command);
    }
#endif

    return 0;

 ERR:
    return -1;
}
#else
static int do_RunBcbCommand(
    cmd_tbl_t * cmdtp,
    int flag,
    int argc,
    char * const argv[])
{
    if (argc != 2) {
        return cmd_usage(cmdtp);
    }

    // Do-Nothing!
    return 0;
}
#endif /* CONFIG_BOOTLOADER_CONTROL_BLOCK */


// BCB: Bootloader Control Block
U_BOOT_CMD(
    bcb, 2, 0, do_RunBcbCommand,
    "bcb",
    "\nThis command will run some commands which saved in misc\n"
    "partition by mark to decide whether execute command!\n"
    "Command format:\n"
    "  bcb bcb_mark\n"
    "Example:\n"
    "  /dev/block/misc partition is saved some contents:\n"
    "  uboot-command\n" // command mark
    "  N/A\n"
    "  setenv aa 11;setenv bb 22;setenv cc 33;saveenv;\n"   // command
    "So you can execute command: bcb uboot-command"
);