mtk-preloader/platform/common/bootctrl/1.0/ab_bootcheck.c

/* Copyright Statement:
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#include "typedefs.h"
#include "platform.h"
#include "bootctrl.h"
#include "ab_bootcheck.h"
#include "mmc_core.h"

#define MOD "[AB]"

const char *ab_suffix = NULL;

void ab_ota_boot_check(void)
{
    ab_suffix = get_suffix();
    u8 ab_retry = get_retry_count(ab_suffix);
    boot_part_t bootpart = BOOT_PART_NONE;

    if (ab_get_boot_part(&bootpart)) {
        print("%s invalid boot part: %d\n", MOD, bootpart);
    }
    if(bootpart == BOOT_PART_A)
        print("%s Current boot: Preloader_a\n", MOD);
    else if(bootpart == BOOT_PART_B)
        print("%s Current boot: Preloader_b\n", MOD);
    else
        print("%s Current boot: %d\n", MOD, bootpart);

    while (!check_valid_slot()) { //one or more valid slot
        print("%s ab_suffix: %s, ab_retry: %d\n", MOD, ab_suffix, ab_retry);
        if (get_boot_mode(ab_suffix)) { //boot to normal mode
            if (get_bootup_status(ab_suffix)) { //boot_successfully == 1
                return;
            } else {
                if (ab_retry > 0) {
                    reduce_retry_count(ab_suffix);
                    return;
                } else {
                    mark_slot_invalid(ab_suffix);
                    //rollback to previous suffix
                    print("%s rollback suffix!\n", MOD);
                    if (!memcmp(ab_suffix, BOOTCTRL_SUFFIX_A, 2)) {
                        ab_suffix = BOOTCTRL_SUFFIX_B;

                        if (ab_set_boot_part(BOOT_PART_B)) {
                            print("Fail switch to Preloader_b\n");
                            ASSERT(0);
                        }
                        else { //success switch preloader to previous version, reboot
                            print("Success switch to Preloader_b\n");
                            mtk_arch_reset(1);
                        }
                    } else {
                        ab_suffix = BOOTCTRL_SUFFIX_A;

                        if (ab_set_boot_part(BOOT_PART_A)) {
                            print("Fail switch to Preloader_a\n");
                            ASSERT(0);
                        }
                        else { //success switch preloader to previous version, reboot
                            print("Success switch to Preloader_a\n");
                            mtk_arch_reset(1);
                        }
                    }
                    ab_retry = get_retry_count(ab_suffix);
                }
            }
        } else {
            return;
        }
    }
    g_boot_mode = RECOVERY_BOOT;
    print("%s no valid slot! boot_mode: %d\n", MOD, g_boot_mode);
    return;
}