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# # Copyright (C) 2016 Ingenic Semiconductor Co.,Ltd # # X1000 series bootloader for u-boot/rtos/linux # # Zhang YanMing <[email protected], [email protected]> # # This program is free software; you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by the # Free Software Foundation; either version 2 of the License, or (at your # option) any later version. # # You should have received a copy of the GNU General Public License along # with this program; if not, write to the Free Software Foundation, Inc., # 675 Mass Ave, Cambridge, MA 02139, USA. # # 这是什么? ============== bootloader - 用于加载引导u-boot/linux/rtos,支持spi nand/nor, mmc/sdcard启动 如何编译? ============== 以halley2板(spi nor)为例 第一步: 配置 make halley2_nor_config 第二步:编译 make 如何添加新板极? ============== 1.在boards下添加板极目录 2.打开Makefile添加新板极编译目标 如何引到u-boot? ============== 打开boards/BOARD_NAME/board.mk,修改BOOT_NEXT_STAGE := 0,重新编译 将编译出的x-loader-xxx.bin和u-boot.bin cat在一起 cat x-loader-xxx.bin u-boot.bin > xxx.bin 如何引导RTOS? ============== 打开boards/BOARD_NAME/board.mk,修改BOOT_NEXT_STAGE := 2,重新编译 如何引导zImage? ============== 打开boards/BOARD_NAME/board.mk,修改BOOT_NEXT_STAGE := 1, KERNEL_IMAGE_TYPE := 0,重新编译 如何引导xImage? ============== 打开boards/BOARD_NAME/board.mk,修改BOOT_NEXT_STAGE := 1, KERNEL_IMAGE_TYPE := 1,重新编译 如何引导vmlinux? ============== 打开boards/BOARD_NAME/board.mk,修改BOOT_NEXT_STAGE := 1, KERNEL_IMAGE_TYPE := 2,重新编译 kernel编译: make vmlinux.bin 板极配置文件在哪里? ============== 在include/configs/BOARD_NAME.h 如何针对板子做特定初始化? ============== boards/BOARD_NAME/board.c中board_init()用于在引导前对板子 进行初始化,当然也可以没有 如何修改Soc各时钟频率? ============== include/configs/boards_common.h为默认值 打开板极头文件BOARD.h,去定义默认值再重新定义期望值 如何修改串口号以及波特率? ============== 打开include/configs/BOARD_NAME.h 修改: #define CONFIG_CONSOLE_BAUDRATE 3000000 #define CONFIG_CONSOLE_PC #define CONFIG_CONSOLE_INDEX 2 如何关闭系统串口打印? ============== 打开include/configs/BOARD_NAME.h #undef CONFIG_CONSOLE_ENABLE 如何添加自定义的kernel cmdline? ============== 打开include/configs/BOARD_NAME.h #define KERNEL_ARGS_BOARD "xxx " 系统没有32KHz晶振如何休眠唤醒? ============== 打开include/configs/BOARD_NAME.h 增加定义:#define CONFIG_RTCCLK_SRC_EXT 如何添加recovery引导功能? ============== 打开include/configs/BOARD_NAME.h 增加定义:#define CONFIG_RECOVERY 如何使能watch dog功能? ============== 打开include/configs/BOARD_NAME.h 增加定义:#define CONFIG_WDT 默认timeout为1000ms 通过#define CONFIG_WDT_TIMEOUT_MS修改默认值 x-loader中如何进入低功耗状态? ============== 打开include/configs/BOARD_NAME.h 增加定义:#define CONFIG_PM_SUSPEND 以及 #define CONFIG_PM_SUSPEND_STATE PM_SUSPEND_STANDY ---> CPU进入idle状态 #define CONFIG_PM_SUSPEND_STATE PM_SYSPEND_MEM ---> CPU进入sleep状态 在boards/BOARD_NAME/board.c中实现gpio_ss_table[][2]数组设置休眠状态,可以不实现 x-loader中如何进入USB烧录模式? ============== 打开include/configs/BOARD_NAME.h 增加定义:#define CONFIG_SOFT_BURN 在适当位置调用set_jump_to_usbboot();机器会重启进入烧录模式 烧录什么文件? ============== 编译完成会有提示:“Image: xxxxxx” is ready 添加了代码编译不过怎么办? ============== 首先确认代码没有超过12KByte,如果没有继续debug 引导不成功怎么办? ============== 1.执行make | tee make.txt 2.将out目录和make.txt打包 3.问题反馈 问题反馈:ZhangYanMing<[email protected]>
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bootloader for ingenic X1000 series Soc(u-boot/kernel/rtos)
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