/*
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* (C) Copyright 2016 Rockchip Electronics Co., Ltd
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <boot_rkimg.h>
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#include <malloc.h>
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#include <asm/io.h>
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#include <asm/arch/boot_mode.h>
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DECLARE_GLOBAL_DATA_PTR;
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enum {
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PH = 0, /* P: Priority, H: high, M: middle, L: low*/
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PM,
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PL,
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};
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static int misc_require_recovery(u32 bcb_offset, int *bcb_recovery_msg)
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{
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struct bootloader_message *bmsg;
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struct blk_desc *dev_desc;
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disk_partition_t part;
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int cnt, recovery = 0;
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dev_desc = rockchip_get_bootdev();
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if (!dev_desc) {
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printf("dev_desc is NULL!\n");
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goto out;
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}
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if (part_get_info_by_name(dev_desc, PART_MISC, &part) < 0) {
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printf("No misc partition\n");
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goto out;
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}
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cnt = DIV_ROUND_UP(sizeof(struct bootloader_message), dev_desc->blksz);
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bmsg = memalign(ARCH_DMA_MINALIGN, cnt * dev_desc->blksz);
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if (blk_dread(dev_desc, part.start + bcb_offset, cnt, bmsg) != cnt) {
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recovery = 0;
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} else {
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recovery = !strcmp(bmsg->command, "boot-recovery");
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if (bcb_recovery_msg) {
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if (!strcmp(bmsg->recovery, "recovery\n--rk_fwupdate\n"))
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*bcb_recovery_msg = BCB_MSG_RECOVERY_RK_FWUPDATE;
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else if (!strcmp(bmsg->recovery, "recovery\n--factory_mode=whole") ||
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!strcmp(bmsg->recovery, "recovery\n--factory_mode=small"))
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*bcb_recovery_msg = BCB_MSG_RECOVERY_PCBA;
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}
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}
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free(bmsg);
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out:
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return recovery;
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}
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int get_bcb_recovery_msg(void)
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{
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int bcb_recovery_msg = BCB_MSG_RECOVERY_NONE;
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#ifdef CONFIG_ANDROID_BOOT_IMAGE
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u32 bcb_offset = android_bcb_msg_sector_offset();
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#else
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u32 bcb_offset = BCB_MESSAGE_BLK_OFFSET;
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#endif
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misc_require_recovery(bcb_offset, &bcb_recovery_msg);
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return bcb_recovery_msg;
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}
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/*
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* There are three ways to get reboot-mode:
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*
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* No1. Android BCB which is defined in misc.img (0KB or 16KB offset)
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* No2. CONFIG_ROCKCHIP_BOOT_MODE_REG that supports "reboot xxx" commands
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* No3. Env variable "reboot_mode" which is added by U-Boot
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*
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* Recovery mode from:
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* - Android BCB in misc.img
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* - "reboot recovery" command
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* - recovery key pressed without usb attach
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*/
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int rockchip_get_boot_mode(void)
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{
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static int boot_mode[] = /* static */
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{ -EINVAL, -EINVAL, -EINVAL };
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static int bcb_offset = -EINVAL; /* static */
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uint32_t reg_boot_mode;
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char *env_reboot_mode;
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int clear_boot_reg = 0;
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int recovery_msg = 0;
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#ifdef CONFIG_ANDROID_BOOT_IMAGE
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u32 offset = android_bcb_msg_sector_offset();
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#else
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u32 offset = BCB_MESSAGE_BLK_OFFSET;
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#endif
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/*
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* Env variable "reboot_mode" which is added by U-Boot, reading ever time.
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*/
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env_reboot_mode = env_get("reboot_mode");
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if (env_reboot_mode) {
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if (!strcmp(env_reboot_mode, "recovery-key")) {
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printf("boot mode: recovery (key)\n");
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return BOOT_MODE_RECOVERY;
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} else if (!strcmp(env_reboot_mode, "recovery-usb")) {
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printf("boot mode: recovery (usb)\n");
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return BOOT_MODE_RECOVERY;
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} else if (!strcmp(env_reboot_mode, "recovery")) {
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printf("boot mode: recovery (env)\n");
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return BOOT_MODE_RECOVERY;
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} else if (!strcmp(env_reboot_mode, "fastboot")) {
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printf("boot mode: fastboot\n");
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return BOOT_MODE_BOOTLOADER;
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} else if (!strcmp(env_reboot_mode, "normal")) {
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printf("boot mode: normal(env)\n");
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return BOOT_MODE_NORMAL;
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}
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}
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/*
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* Android BCB special handle:
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* Once the Android BCB offset changed, reinitalize "boot_mode[PM]".
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*
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* Background:
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* 1. there are two Android BCB at the 0KB(google) and 16KB(rk)
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* offset in misc.img
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* 2. Android image: return 0KB offset if image version >= 10,
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* otherwise 16KB
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* 3. Not Android image: return 16KB offset, eg: FIT image.
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*
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* To handle the cases of 16KB and 0KB, we reinitial boot_mode[PM] once
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* Android BCB is changed.
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*
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* PH and PL is from boot mode register and reading once.
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* PM is from misc.img and should be updated if BCB offset is changed.
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* Return the boot mode according to priority: PH > PM > PL.
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*/
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if (bcb_offset != offset) {
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boot_mode[PM] = -EINVAL;
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bcb_offset = offset;
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}
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/* directly return if there is already valid mode */
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if (boot_mode[PH] != -EINVAL)
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return boot_mode[PH];
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else if (boot_mode[PM] != -EINVAL)
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return boot_mode[PM];
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else if (boot_mode[PL] != -EINVAL)
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return boot_mode[PL];
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/*
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* Boot mode priority
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*
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* Anyway, we should set download boot mode as the highest priority, so:
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* reboot loader/bootloader/fastboot > misc partition "recovery" > reboot xxx.
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*/
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reg_boot_mode = readl((void *)CONFIG_ROCKCHIP_BOOT_MODE_REG);
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if (reg_boot_mode == BOOT_LOADER) {
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printf("boot mode: loader\n");
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boot_mode[PH] = BOOT_MODE_LOADER;
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clear_boot_reg = 1;
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} else if (reg_boot_mode == BOOT_DFU) {
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printf("boot mode: dfu\n");
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boot_mode[PH] = BOOT_MODE_DFU;
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clear_boot_reg = 1;
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} else if (reg_boot_mode == BOOT_FASTBOOT) {
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printf("boot mode: bootloader\n");
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boot_mode[PH] = BOOT_MODE_BOOTLOADER;
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clear_boot_reg = 1;
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} else if (misc_require_recovery(bcb_offset, &recovery_msg)) {
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printf("boot mode: recovery (misc)\n");
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boot_mode[PM] = BOOT_MODE_RECOVERY;
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} else {
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switch (reg_boot_mode) {
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case BOOT_NORMAL:
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printf("boot mode: normal\n");
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boot_mode[PL] = BOOT_MODE_NORMAL;
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clear_boot_reg = 1;
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break;
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case BOOT_RECOVERY:
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printf("boot mode: recovery (cmd)\n");
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boot_mode[PL] = BOOT_MODE_RECOVERY;
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clear_boot_reg = 1;
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break;
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case BOOT_UMS:
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printf("boot mode: ums\n");
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boot_mode[PL] = BOOT_MODE_UMS;
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clear_boot_reg = 1;
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break;
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case BOOT_CHARGING:
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printf("boot mode: charging\n");
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boot_mode[PL] = BOOT_MODE_CHARGING;
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clear_boot_reg = 1;
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break;
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case BOOT_PANIC:
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printf("boot mode: panic\n");
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boot_mode[PL] = BOOT_MODE_PANIC;
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break;
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case BOOT_WATCHDOG:
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printf("boot mode: watchdog\n");
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boot_mode[PL] = BOOT_MODE_WATCHDOG;
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break;
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default:
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printf("boot mode: None\n");
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boot_mode[PL] = BOOT_MODE_UNDEFINE;
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}
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}
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/*
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* We don't clear boot mode reg when its value stands for the reboot
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* reason or others(in the future), the kernel will need and clear it.
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*/
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if (clear_boot_reg)
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writel(BOOT_NORMAL, (void *)CONFIG_ROCKCHIP_BOOT_MODE_REG);
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if (boot_mode[PH] != -EINVAL)
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return boot_mode[PH];
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else if (boot_mode[PM] != -EINVAL)
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return boot_mode[PM];
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else
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return boot_mode[PL];
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}
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int setup_boot_mode(void)
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{
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char env_preboot[256] = {0};
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switch (rockchip_get_boot_mode()) {
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case BOOT_MODE_BOOTLOADER:
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printf("enter fastboot!\n");
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#if defined(CONFIG_FASTBOOT_FLASH_MMC_DEV)
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snprintf(env_preboot, 256,
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"setenv preboot; mmc dev %x; fastboot usb 0; ",
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CONFIG_FASTBOOT_FLASH_MMC_DEV);
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#elif defined(CONFIG_FASTBOOT_FLASH_NAND_DEV)
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snprintf(env_preboot, 256,
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"setenv preboot; fastboot usb 0; ");
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#endif
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env_set("preboot", env_preboot);
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break;
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case BOOT_MODE_UMS:
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printf("enter UMS!\n");
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env_set("preboot", "setenv preboot; ums mmc 0");
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break;
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#if defined(CONFIG_CMD_DFU)
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case BOOT_MODE_DFU:
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printf("enter DFU!\n");
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env_set("preboot", "setenv preboot; dfu 0 ${devtype} ${devnum}; rbrom");
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break;
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#endif
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case BOOT_MODE_LOADER:
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printf("enter Rockusb!\n");
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env_set("preboot", "setenv preboot; download");
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run_command("download", 0);
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break;
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case BOOT_MODE_CHARGING:
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printf("enter charging!\n");
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env_set("preboot", "setenv preboot; charge");
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break;
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}
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return 0;
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}
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