linux kernel 实现多平台编译 （linux 内核调试）

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linux kernel 实现多平台编译 （linux 内核调试） [复制链接]

1、在kconfig中添加编译平台

Index: arch/arm/mach-hi3516a/Kconfig =================================================================== --- arch/arm/mach-hi3516a/Kconfig    (revision 106) +++ arch/arm/mach-hi3516a/Kconfig    (working copy) @@ -33,6 +33,17 @@        please select HAVE_ARM_LOCAL_TIMER. endchoice + +config MACH_UPANO_HI3516A_SENSOR +        bool "hi3516a sensor module" +    default y +        depends on MACH_HI3516A + +config MACH_UPANO_HI3516A_MAIN +        bool "hi3516a main module" +    default y +        depends on MACH_HI3516A + config DEFAULT_BUSCLK      int "DEFAULT_BUSCLK"      default "50000000"

2、添加对应的.config文件

A  +    arch/arm/configs/hi3516a_test1_defconfig
A  +    arch/arm/configs/hi3516a_test2_defconfig

CONFIG_MACH_HI3516A=y CONFIG_HAVE_SP804_LOCAL_TIMER_HI3516A=y # CONFIG_HAVE_ARM_LOCAL_TIMER_HI3516A is not set # CONFIG_MACH_HI3516A_TEST1 is not set CONFIG_MACH_HI3516A_TEST2=y

在.config 中添加对应的平台配置

3、在kernel 启动的时候打印系统信息的时候，添加打印出板子的平台信息

Index: arch/arm/kernel/setup.c =================================================================== --- arch/arm/kernel/setup.c    (revision 106) +++ arch/arm/kernel/setup.c    (working copy) @@ -474,6 +474,14 @@      cpu_cache = *list->cache; #endif +#if defined(CONFIG_MACH_HI3516A_TEST1) +    printk("BOARD_TYPE := HI3516A_TEST1\n"); +#elif defined(CONFIG_MACH_HI3516A_TEST2) +    printk("BOARD_TYPE := HI3516A_TEST2\n"); +#else +    printk("BOARD_TYPE := Unknown board\n"); +#endif +      printk("CPU: %s [%08x] revision %d (ARMv%s), cr=%08lx\n",             cpu_name, read_cpuid_id(), read_cpuid_id() & 15,             proc_arch[cpu_architecture()], cr_alignment);

4、更新内核启动信息

    init/main.c--->start_kernel--->setup_arch--->arch/arm/kernel/setup.c--->setup_arch--->setup_processor