src/bsp/lk/app/fitboot/fitboot.c

/*
 * Copyright (c) 2016 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 <app.h>
#include <assert.h>
#include <boot_mode.h>
#include <errno.h>
#include <libfdt.h>
#include <kernel/event.h>
#include <kernel/thread.h>
#include <kernel/vm.h>
#include <lib/mempool.h>
#ifdef AB_UPGRADE_APP
#include <lib/bio.h>
#endif
#include <platform.h>
#include <platform/mtk_key.h>
#include <platform/mtk_wdt.h>
#include <trace.h>

#include "fit.h"
#ifdef RTC_CHECK_FASTBOOT
#include "rtc.h"
#endif

#ifdef SET_FDT_EMI_INFO
#include "platform/emi_info_v1.h"
#endif

#define LOCAL_TRACE 0

/* BL33 load and entry point address */
#define CFG_BL33_LOAD_EP_ADDR   (BL33_ADDR)
#define ERR_ADDR    (0xffffffff)

#ifdef AB_UPGRADE_APP
#define UPG_SUCCEED   2
#endif

typedef void (*jump32_func_type)(uint32_t addr, uint32_t arg1, uint32_t arg2) __NO_RETURN;
typedef void (*jump64_func_type)(uint64_t bl31_addr, uint64_t bl33_addr, uint64_t arg1) __NO_RETURN;

struct fit_load_data {
    char *part_name;
    char *recovery_part_name;
    void *buf;
    u32 boot_mode;
    ulong kernel_entry;
    ulong dtb_load;
    ulong trustedos_entry;
};

#ifdef AB_UPGRADE_APP
typedef struct boot_flag boot_flag;
struct boot_flag {
    int lastboot;
    int usea;
    int useb;
    int current;
};
#endif

/* global variables, also used in dl_commands.c */
void *kernel_buf;
void *tz_buf;
void *bl33_buf;

__WEAK bool plat_fixup_hook(void* bootimg_dtb_load, ...);

#if ARCH_ARM64
void mtk_sip(uint32_t smc_fid, uint64_t bl31_addr, uint64_t bl33_addr)
{
    jump64_func_type jump64_func = (jump64_func_type)bl31_addr;
    (*jump64_func)(bl31_addr, bl33_addr, 0UL);
}
#endif

void prepare_bl2_exit(ulong smc_fid, ulong bl31_addr, ulong bl33_addr, ulong arg1)
{
#if ARCH_ARM64
    /* switch to el3 via smc, and will jump to mtk_sip from smc handler */
    __asm__ volatile("smc #0\n\t");
#else
    jump32_func_type jump32_func = (jump32_func_type)bl31_addr;
    (*jump32_func)(bl33_addr, 0, 0);
#endif
}

#pragma GCC push_options
#pragma GCC optimize("O1")
static void setup_bl33(uint *bl33, ulong fdt, ulong kernel_ep)
{
    bl33[12] = (ulong)fdt;
    bl33[14] = (unsigned)0;
    bl33[16] = (unsigned)0;
    bl33[18] = (unsigned)0;
    bl33[20] = (ulong)kernel_ep;
    bl33[21] = (ulong)0;
    bl33[22] = (unsigned)MACH_TYPE;
}
#pragma GCC pop_options

static int extract_fdt(void *fdt, int size)
{
    int ret = 0;

    /* DTB maximum size is 2MB */
    ret = fdt_open_into(fdt, fdt, size);
    if (ret) {
        dprintf(CRITICAL, "open fdt failed\n");
        return ret;
    }
    ret = fdt_check_header(fdt);
    if (ret) {
        dprintf(CRITICAL, "check fdt failed\n");
        return ret;
    }

    return ret;
}

static bool check_uart_enter(void)
{
    char c;

    if (platform_dgetc(&c, false) != 0)
        return false;
    return (c == 13);
}

#ifdef AB_UPGRADE_APP
int set_currently_boot_flag(int last_flag, int current_flag, const char *part_name)
{
    int ret;
    long len = 0;
    u32 writesize = 2048;
    int index = -1;
    unsigned long long ptn = 0;
    unsigned long long size = 0;
    char *buf;
    boot_flag set_flag;

    /* read partition */
    struct bdev *nand_MISC = bio_open_by_label("misc");
    if (!nand_MISC) {
        LTRACEF("open misc partition failed.\n");
        return 1;
    }
    buf = malloc(writesize);
    if (buf == NULL) {
        LTRACEF("malloc for writesize failed.\n");
        return 1;
    }
    memset(buf, 0, writesize);

    len = bio_read(nand_MISC, buf, 0, sizeof(boot_flag));
    if (len < 0) {
        dprintf(CRITICAL, "%s read error. LINE: %d\n", part_name, __LINE__);
        free(buf);
        buf = NULL;
        return -1;
    }
    /* dump flag for debug */
    dprintf(CRITICAL, "current boot flag is %d\n", current_flag);
    /* set currently flag to buf */
    set_flag.lastboot = last_flag;
    set_flag.current = current_flag;
    set_flag.usea = (int)-1;
    dprintf(CRITICAL, "last_flag boot flag is %d\n", last_flag);
    set_flag.useb = (int)-1;
    memset(buf, 0, writesize);
    memcpy(buf, (void *)&set_flag, sizeof(boot_flag));
    /* write buf to offset 0, which size is 2048 */
    len = bio_write(nand_MISC, (char *)buf, 0, (u32)writesize);
    if (len <=  0) {
        dprintf(CRITICAL, "nand write fail, return : %d,  error: %s\n",len, strerror(errno));
        dprintf(CRITICAL, "buf: %s\n", buf);
        ret = -1;
    }
    else {
        dprintf(CRITICAL, "set flag: lastboot = %d, use A = %d, use B = %d, current = %d\n", set_flag.lastboot, set_flag.usea, set_flag.useb, set_flag.current);
        ret = 0;
    }

    if (buf) {
        free(buf);
        buf = NULL;
    }
    return ret;
}

int check_boot_partition(const char *part_name)
{
    int ret = 0;
    boot_flag flag;
    int boot = 0;

    struct bdev *nand_MISC = bio_open_by_label("misc");
    int len = -1;
    char *buf;

    if (!nand_MISC) {
        printf("failed to open MISC\n");
        return 0;
    }
    printf("open MISC successfully\n");

    /* read partition */
    buf = malloc(sizeof(boot_flag));
    if (buf == NULL) {
        LTRACEF("malloc for boot_flag failed.\n");
        return 2;
    }

    len = bio_read(nand_MISC, buf, 0, sizeof(boot_flag));
    if (len < 0) {
        dprintf(CRITICAL, "read %s: boot flag read error. LINE: %d\n", part_name, __LINE__);
        free(buf);
        buf = NULL;
        return -1;
    }
    memcpy(&flag, (void *)buf, sizeof(boot_flag));

    /* dump flag for debug */
    dprintf(CRITICAL, "lastboot = %d, use A = %d, use B = %d, current = %d\n", flag.lastboot, flag.usea, flag.useb, flag.current);

    /* make dicision */
    if (flag.lastboot == 0) {
        if (flag.useb == UPG_SUCCEED) {
            boot = 1;
            dprintf(CRITICAL,"***last succeed boot from A system,upgrade B succeed***\n");
            dprintf(CRITICAL,"***now boot from system B***\n");
        } else {
            boot = 0;
            dprintf(CRITICAL,"***last succeed boot from A system,upgrade B failed or no upgrade B***\n");
            dprintf(CRITICAL,"***now boot from system A***\n");
        }
    } else if (flag.lastboot == 1) {
        if (flag.usea == UPG_SUCCEED) {
            boot = 0;
            dprintf(CRITICAL,"***last succeed boot from B system,upgrade A succeed***\n");
            dprintf(CRITICAL,"***now boot from system A***\n");
        } else {
            boot = 1;
            dprintf(CRITICAL,"***last succeed boot from B system,upgrade A failed or no upgrade A***\n");
            dprintf(CRITICAL,"***now boot from system B***\n");
        }
    } else {
        dprintf(CRITICAL, "boot flag is not match, use default boot partition\n");
        boot = 0;
    }

    if ((flag.current != boot) || (flag.usea == UPG_SUCCEED) || (flag.useb == UPG_SUCCEED)) {
        ret = bio_erase(nand_MISC, 0, nand_MISC->total_size);  //erase total_size
        printf("bio erase ret %d\n", ret);
        ret = set_currently_boot_flag(flag.lastboot, boot, part_name);
        if (ret!=0)
            dprintf(CRITICAL, "set flags fail. LINE: %d\n", __LINE__);
    }
    if (buf) {
        free(buf);
        buf = NULL;
    }
    return boot;
}

static int cmdlineoverlay(void *boot_dtb, char *cmdline, int len)
{
    int chosen_node_offset = 0;
    int ret = -1;
    char separator[2] = {0};
    char str_nand[32] = "ubi.mtd=";
    char str_emmc[32] = "root=/dev/mmcblk0p";
    char str_real[32] = {0};
    int header_length = 0;
    ret = extract_fdt(boot_dtb, MAX_DTB_SIZE);
    if (ret != 0) {
        dprintf(CRITICAL, "extract_fdt error.\n");
        return -1;
    }

    chosen_node_offset = fdt_path_offset(boot_dtb, "/chosen");
    char *cmdline_read;
    int length;
    cmdline_read = fdt_getprop(boot_dtb, chosen_node_offset, "bootargs", &length);
    dprintf(CRITICAL, "dtsi cmdline: %s ,lenth:%zu\n", cmdline_read, strlen(cmdline_read));
    char *pos1;
    char *pos2;

    if ((pos1 = strstr(cmdline_read,str_nand)))
    {
        separator[0] = ',';
        header_length = strlen(str_nand);
        strncpy(str_real, str_nand, header_length);
    }
    else if ((pos1 = strstr(cmdline_read,str_emmc)))
    {
        separator[0] = ' ';
        header_length = strlen(str_emmc);
        strncpy(str_real, str_emmc, header_length);
    }
    else
    {
        dprintf(CRITICAL, "no ubi.mtd= or root=/dev/mmcblk0p in cmdline, error!\n");
        return -1;
    }

    pos2 = strstr(pos1, separator);
    if (pos2 == NULL) {
        dprintf(CRITICAL, "can not find separator in cmdline, error!\n");
        return -1;
    }
    if ((pos2 - pos1 - header_length) <= 0) {
        dprintf(CRITICAL, "no part number in cmdline, error!\n");
        return -1;
    }

    char mtdnum_str[3];
    char mtdnum_str_new[3];
    strncpy(mtdnum_str, pos1 + header_length, (pos2 - pos1 - header_length));
    mtdnum_str[pos2 - pos1 - header_length] = '\0';
    int mtdnum = atoi(mtdnum_str);
    mtdnum ++;
    sprintf(mtdnum_str_new, "%d", mtdnum);
    if (mtdnum >= 10) {
        char half_before[1024] = {'\0'};
        char half_behind[1024] = {'\0'};
        strncpy(half_before, cmdline_read, pos2 - cmdline_read);
        char *pos3 = strstr(half_before, str_real);
        strncpy(pos3 + header_length, mtdnum_str_new, 2);
        strncpy(half_behind, pos2, strlen(pos2) + 1);
        cmdline_read = strncat(half_before, half_behind, strlen(half_behind));

    } else {
        strncpy(pos1 + header_length, mtdnum_str_new, 1);
    }
    printf("cmdline new: %s , length: %zu", cmdline_read, strlen(cmdline_read));
    ret = fdt_setprop(boot_dtb, chosen_node_offset, "bootargs", cmdline_read, strlen(cmdline_read) + 1);
    if (ret != 0) {
        dprintf(CRITICAL, "fdt_setprop error.\n");
        return -1;
    }
    ret = fdt_pack(boot_dtb);
    if (ret != 0) {
        dprintf(CRITICAL, "fdt_pack error.\n");
        return -1;
    }

    return 0;
}
#endif

static bool download_check(void)
{
    if (check_fastboot_mode()) {
        set_clr_fastboot_mode(false);
        dprintf(CRITICAL, "download_check: check_fastboot_mode\n");
        return true;
#ifdef RTC_CHECK_FASTBOOT
    } else if (rtc_bootloader_check()) {
        rtc_bootloader_set_clr(false);
        printf("download_check done");
        return true;
#endif
    } else {
        dprintf(CRITICAL, "download_check: check_uart_enter:%d, check_download_key:%d\n",
                check_uart_enter(), check_download_key());
        return (check_uart_enter() || check_download_key());
    }
}

static bool recovery_check(void)
{
    if (check_recovery_mode()) {
        set_clr_recovery_mode(false);
        return true;
    } else
        return false;
}

static int fit_load_images(void *fit, struct fit_load_data *fit_data)
{
    int ret;

    /* TODO: decide verify policy with config. */
    dprintf(CRITICAL, "verify fit conf sig: %s\n", fit_data->part_name);
    ret = fit_conf_verify_sig(NULL, fit);
    if (ret < 0)
        return ret;

    ret = fit_load_image(NULL, "kernel", fit, NULL, NULL,
                         (paddr_t *)&fit_data->kernel_entry, true);
    if (ret && (ret != -ENOENT)) {
        dprintf(CRITICAL, "%s load kernel failed\n", fit_data->part_name);
        return ret;
    }

    ret = fit_load_image(NULL, "tee", fit, NULL, NULL,
                         (paddr_t *)&fit_data->trustedos_entry, true);
    if (ret && (ret != -ENOENT)) {
        dprintf(CRITICAL, "%s load trustedos failed\n", fit_data->part_name);
        return ret;
    }

    ret = fit_load_image(NULL, "ramdisk", fit, NULL, NULL, NULL, true);
    if (ret && (ret != -ENOENT)) {
        dprintf(CRITICAL, "%s load ramdisk failed\n", fit_data->part_name);
        return ret;
    }

    ret = fit_load_image(NULL, "fdt", fit, (addr_t *)&fit_data->dtb_load, NULL,
                         NULL, true);
    if (ret && (ret != -ENOENT)) {
        fit_data->dtb_load = ERR_ADDR;
        dprintf(CRITICAL, "%s load fdt failed\n", fit_data->part_name);
        return ret;
    }

    return 0;
}


static int fit_load_thread(void *arg)
{
    int err;
    struct fit_load_data *fit_data = (struct fit_load_data *)arg;

    if (fit_data->boot_mode == FASTBOOT_BOOT) {
        err = fit_load_images(fit_data->buf, fit_data);
        return err;
    }

    while (fit_data->boot_mode == NORMAL_BOOT) {
        err = fit_get_image(fit_data->part_name, &fit_data->buf);
        if (err)
            break;

        err = fit_load_images(fit_data->buf, fit_data);
        if (err)
            break;

        return 0;
    }

#ifdef AB_UPGRADE_APP
    /* For ab upgrade system, there is no recovery mode */
#else
    dprintf(CRITICAL, "%s try recovery mode !!\n", fit_data->part_name);
    // RECOVERY_BOOT
    err = fit_get_image(fit_data->recovery_part_name, &fit_data->buf);
    if (err)
        return err;

    err = fit_load_images(fit_data->buf, fit_data);
#endif

    return err;
}

extern void ext_boot(void);
static void fitboot_task(const struct app_descriptor *app, void *args)
{
    void *fit, *dtbo_buf;
    struct fit_load_data tz, bootimg;
    thread_t *tz_t, *bootimg_t;
    int ret_tz, ret_bootimg;

    int ret;
    u32 boot_mode = NORMAL_BOOT;

    uint bl33[] = { 0xea000005,  /* b BL33_32_ENTRY  | ands x5, x0, x0  */
                    0x58000160,  /* .word 0x58000160 | ldr x0, _X0      */
                    0x58000181,  /* .word 0x58000181 | ldr x1, _X1      */
                    0x580001a2,  /* .word 0x580001a2 | ldr x2, _X2      */
                    0x580001c3,  /* .word 0x580001c3 | ldr x3, _X3      */
                    0x580001e4,  /* .word 0x580001e4 | ldr x4, _X4      */
                    0xd61f0080,  /* .word 0xd61f0080 | br  x4           */
                    /* BL33_32_ENTRY:   |                  */
                    0xe59f0030,  /*    ldr r0, _R0   | .word 0xe59f0030 */
                    0xe59f1030,  /*    ldr r1, _R1   | .word 0xe59f1030 */
                    0xe59f2004,  /*    ldr r2, _X0   | .word 0xe59f2004 */
                    0xe59ff020,  /*    ldr pc, _X4   | .word 0xe59ff020 */
                    0x00000000,  /*      .word   0x00000000 */
                    0x00000000,  /* _X0: .word   0x00000000 */
                    0x00000000,  /*      .word   0x00000000 */
                    0x00000000,  /* _X1: .word   0x00000000 */
                    0x00000000,  /*      .word   0x00000000 */
                    0x00000000,  /* _X2: .word   0x00000000 */
                    0x00000000,  /*      .word   0x00000000 */
                    0x00000000,  /* _X3: .word   0x00000000 */
                    0x00000000,  /*      .word   0x00000000 */
                    0x00000000,  /* _X4: .word   0x00000000 */
                    0x00000000,  /* _R0: .word   0x00000000 */
                    0x00000000,  /* _R1: .word   0x00000000 */
                    0x00000000   /*      .word   0x00000000 */
                  };

    /* alloc kernel and tz buffer from mempool */
    kernel_buf = mempool_alloc(MAX_KERNEL_SIZE, MEMPOOL_ANY);
    tz_buf = mempool_alloc(MAX_TEE_DRAM_SIZE, MEMPOOL_ANY);
    if (!kernel_buf || !tz_buf) {
        dprintf(CRITICAL, "alloc buf fail, kernel %p, tz %p\n",
                kernel_buf, tz_buf);
        return;
    }
#ifdef AB_UPGRADE_APP
    /* For ab upgrade system, there is no recovery mode */
#else
    /* recovery */
    if (recovery_check()) {
        boot_mode = RECOVERY_BOOT;
    }
#endif

    /* fastboot */
    if (download_check()) {
FASTBOOT:
        ext_boot();
        boot_mode = FASTBOOT_BOOT;
    }

    bootimg.part_name = (char *)BOOT_PART_NAME;
    tz.part_name = (char *)TZ_PART_NAME;

#ifdef AB_UPGRADE_APP
    /* disable wdt */
    /*1.choose A/B boot & tz img.*/
    int boot_part = 0;
    boot_part = check_boot_partition("misc");
    if (boot_part == 0) {
        dprintf(CRITICAL, "choose first boot partition:%s  , tee choose: %s\n",(char *)BOOT_PART_NAME, (char *)TZ_PART_NAME);
        bootimg.part_name = (char *)BOOT_PART_NAME;
        tz.part_name = (char *)TZ_PART_NAME;
        //cmdlineoverlay(bootimg.dtb_load, NULL, 0); from b partition,need to set

    } else if (boot_part == 1) {
        dprintf(CRITICAL, "choose second boot partition: %s  , tee choose: %s\n", (char *)RECOVERY_BOOT_PART_NAME, (char *)RECOVERY_TZ_PART_NAME);
        bootimg.part_name = (char *)RECOVERY_BOOT_PART_NAME;
        tz.part_name = (char *)RECOVERY_TZ_PART_NAME;

    } else {
        dprintf(CRITICAL, "unknow boot_part (%d), using first boot partition\n", boot_part);
        bootimg.part_name = (char *)BOOT_PART_NAME;
        tz.part_name = (char *)TZ_PART_NAME;
    }
#endif

    bootimg.recovery_part_name = (char *)RECOVERY_BOOT_PART_NAME;
    bootimg.boot_mode = boot_mode;
    bootimg.buf = kernel_buf;
    bootimg_t = thread_create("bootimg_ctl", fit_load_thread, &bootimg,
                              DEFAULT_PRIORITY, DEFAULT_STACK_SIZE);

    /* create a tz thread to load tz */;
    tz.recovery_part_name = (char *)RECOVERY_TZ_PART_NAME;
    tz.boot_mode = boot_mode;
    tz.buf = tz_buf;
    tz_t = thread_create("tz_ctl", fit_load_thread, &tz,
                         DEFAULT_PRIORITY, DEFAULT_STACK_SIZE);
    if (!bootimg_t || !tz_t) {
        dprintf(CRITICAL, "create load threads failed\n");
        return;
    }

    thread_resume(bootimg_t);
    thread_resume(tz_t);

    thread_join(bootimg_t, &ret_bootimg, INFINITE_TIME);
    thread_join(tz_t, &ret_tz, INFINITE_TIME);

    if (ret_bootimg) {
        dprintf(CRITICAL, "load boot image failed\n");
        goto FASTBOOT;
    }

    if (ret_tz) {
        dprintf(CRITICAL, "load tz image failed\n");
        goto FASTBOOT;
    }

    plat_fixup_hook((void *)bootimg.dtb_load);

    dtbo_buf = mempool_alloc(MAX_DTBO_SIZE, MEMPOOL_ANY);
    if (!dtbo_buf) {
        dprintf(CRITICAL, "alloc dtbo buf fail\n");
        return;
    }

#ifdef AB_UPGRADE_APP
    /*2.overlay cmdline to choose A/B rootfs*/
    if (boot_part == 1) {
        dprintf(CRITICAL, "load second partitions, need to overlay cmdline\n");
        cmdlineoverlay((void *)bootimg.dtb_load, NULL, 0);
    }
#endif

#ifdef  SET_FDT_EMI_INFO
    /* set fdt emi info*/
    ret = extract_fdt((void *)bootimg.dtb_load, MAX_DTB_SIZE);
    if (ret) {
        dprintf(CRITICAL, "extract fdt failed\n");
        return;
    }

    ret = set_fdt_emi_info((void *)bootimg.dtb_load);
    if (ret < 0) {
        dprintf(CRITICAL, "failed to set fdt emi info\n");
    }

    ret = fdt_pack((void *)bootimg.dtb_load);
    if (ret) {
        dprintf(CRITICAL, "ft pack failed\n");
        return;
    }
#endif

    /* check if dtbo is existed */
    ret = fit_get_image(DTBO_PART_NAME, &dtbo_buf);
    if (ret == 0) {
        void *fdt_dtbo;
        void *fdt_dtb;

        if (bootimg.dtb_load == ERR_ADDR) {
            dprintf(CRITICAL, "dtbo failed, no dtb\n");
            return;
        }
        fdt_dtb = (void *)bootimg.dtb_load;

        /* extract fdt */
        ret = extract_fdt(fdt_dtb, MAX_DTB_SIZE);
        if (ret) {
            dprintf(CRITICAL, "extract fdt failed\n");
            return;
        }

        dprintf(ALWAYS, "[fitboot] do overlay\n");
        fdt_dtbo = (void *)dtbo_buf;
        ret = fdt_overlay_apply(fdt_dtb, fdt_dtbo);
        if (ret) {
            dprintf(CRITICAL, "fdt merge failed, ret %d\n", ret);
            return;
        }

        /* pack fdt */
        ret = fdt_pack(fdt_dtb);
        if (ret) {
            dprintf(CRITICAL, "ft pack failed\n");
            return;
        }
    }

    /* load sspm*/
    extern void fit_load_sspm_image() __attribute__((weak));
    if (fit_load_sspm_image)
        fit_load_sspm_image();

    /*load spmfw*/
    extern void fit_load_spmfw_image() __attribute__((weak));
    if (fit_load_spmfw_image)
        fit_load_spmfw_image();

    /* load bl33 for tz to jump*/
#if WITH_KERNEL_VM
    addr_t fdt_pa = kvaddr_to_paddr((void *)bootimg.dtb_load);
#else
    addr_t fdt_pa = bootimg.dtb_load;
#endif
    setup_bl33(bl33, fdt_pa, (uint)(bootimg.kernel_entry));
    memmove((void *)CFG_BL33_LOAD_EP_ADDR, bl33, sizeof(bl33));

    ulong bl33_pa = CFG_BL33_LOAD_EP_ADDR;
    ulong smc_fid = 0xc2000000UL; /* only used in ARCH_ARM64 */

#if ARCH_ARM64 && WITH_KERNEL_VM
    /* 64-bit LK use non identity mapping VA, VA to PA translation needed */
    bl33_pa = (ulong)kvaddr_to_paddr((void *)CFG_BL33_LOAD_EP_ADDR);
#endif
    dprintf(ALWAYS, "LK run time: %lld (us)\n", current_time_hires());
    dprintf(ALWAYS, "jump to tz %p\n", (void *)tz.kernel_entry);
    arch_chain_load((void *)prepare_bl2_exit, smc_fid, tz.kernel_entry, bl33_pa, 0UL);
}

APP_START(fitboot)
.entry = fitboot_task,
 .flags = 0,
  APP_END