나는 임베디드 리눅스의 세계로 첫 발을 내딛으려고 노력하고 있습니다. 이를 위해 이전 STM32F746 Discovery 데모 보드를 검색했습니다. 내 목표는 u-boot로 Linux 커널을 로드하고 그 커널에서 실행되는 것을 확인하는 것입니다. 파일 시스템(커널의 initramfs에 연결됨)이나 특정 서비스가 없습니다. 빌드 및 구성에는 buildroot를 사용합니다.
진행 방법에 대한 일부 단편적인 정보만 찾았지만 Linux 커널과 u-boot 모두 이 특정 보드를 지원하는 것 같습니다(https://github.com/torvalds/linux/blob/master/arch/arm/boot/dts/stm32f746-disco.dts그리고https://github.com/u-boot/u-boot/blob/master/configs/stm32f746-disco_defconfig).
U-boot는 특별한 문제 없이 작동합니다. 부트로더에 들어가면 이더넷을 통해 커널 이미지를 SDRAM에 로드하고 계속 부팅합니다. 그러나 uboot가 제어를 통과하면 문제가 발생합니다. "커널 시작"을 인쇄한 후에는 더 이상 에코가 발생하지 않습니다.
U-Boot SPL 2019.07 (Sep 14 2019 - 15:02:13 +0200)
Trying to boot from XIP
U-Boot 2019.07 (Sep 14 2019 - 15:02:13 +0200)
Model: STMicroelectronics STM32F746-DISCO board
DRAM: 8 MiB
set_rate not implemented for clock index 4
set_rate not implemented for clock index 4
set_rate not implemented for clock index 4
Flash: 1 MiB
MMC: sdio1@40012c00: 0
In: serial
Out: serial
Err: serial
usr button is at LOW LEVEL
Net:
Warning: ethernet@40028000 (eth0) using random MAC address - 6a:e4:5f:05:16:15
eth0: ethernet@40028000
Hit SPACE in 3 seconds to stop autoboot.
U-Boot > setenv serverip 192.168.2.1
U-Boot > dhcp
Speed: 100, full duplex
BOOTP broadcast 1
DHCP client bound to address 192.168.2.10 (3 ms)
Using ethernet@40028000 device
TFTP from server 192.168.2.1; our IP address is 192.168.2.10
Filename 'uImage-stm32f7'.
TFTP error: trying to overwrite reserved memory...
U-Boot > tftp 0xC0008000 uImage-stm32f7
Speed: 100, full duplex
Using ethernet@40028000 device
TFTP from server 192.168.2.1; our IP address is 192.168.2.10
Filename 'uImage-stm32f7'.
Load address: 0xc0008000
Loading: #################################################################
#################################################################
#################################################################
#################################################################
#################################################################
###########
2.3 MiB/s
done
Bytes transferred = 1718466 (1a38c2 hex)
U-Boot > bootm
## Booting kernel from Legacy Image at c0008000 ...
Image Name: Linux-4.20.0
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 1718402 Bytes = 1.6 MiB
Load Address: c0008000
Entry Point: c0008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
Starting kernel ...
(SDRAM의) uImage주소에서 로드하려고 합니다 . 가능한 모든 경고 신호를 찾을 수 있도록 0xC0008000설정했지만 earlyprintk소용이 없습니다. 또한 해당 zImage형식(동일한 주소에 로드)을 사용해 보았 으나 차이가 없었습니다.
무엇이 문제일까요? 제가 아직 Linux 구성 및 로딩을 처음 접한다는 점을 고려하면 눈에 띄게 잘못된 것이 빠졌기를 바랍니다. 그렇지 않으면 더 고급 디버깅 기술을 사용해야 합니다.
저는 Linux 커널 v4.20과 uboot v2019.07을 사용하고 있습니다. 참고로 이것은 내 buildroot 및 linux defconfig 파일입니다(저는 uboot에 모든 기본 옵션을 사용합니다).
루트 디렉터리 구축:
BR2_HOST_GCC_AT_LEAST_4_5=y
BR2_HOST_GCC_AT_LEAST_4_6=y
BR2_HOST_GCC_AT_LEAST_4_7=y
BR2_HOST_GCC_AT_LEAST_4_8=y
BR2_HOST_GCC_AT_LEAST_4_9=y
BR2_HOST_GCC_AT_LEAST_5=y
BR2_HOST_GCC_AT_LEAST_6=y
BR2_HOST_GCC_AT_LEAST_7=y
BR2_HOST_GCC_AT_LEAST_8=y
BR2_SOFT_FLOAT=y
BR2_arm=y
BR2_ARCH_HAS_TOOLCHAIN_BUILDROOT=y
BR2_ARCH_NEEDS_GCC_AT_LEAST_4_8=y
BR2_ARCH_NEEDS_GCC_AT_LEAST_4_9=y
BR2_ARCH_NEEDS_GCC_AT_LEAST_5=y
BR2_ARCH="arm"
BR2_ENDIAN="LITTLE"
BR2_GCC_TARGET_ABI="aapcs-linux"
BR2_GCC_TARGET_CPU="cortex-m7"
BR2_GCC_TARGET_FLOAT_ABI="soft"
BR2_GCC_TARGET_MODE="thumb"
BR2_READELF_ARCH_NAME="ARM"
BR2_BINFMT_FLAT=y
BR2_BINFMT_FLAT_ONE=y
BR2_ARM_CPU_MAYBE_HAS_FPU=y
BR2_ARM_CPU_MAYBE_HAS_FPV4=y
BR2_ARM_CPU_MAYBE_HAS_FPV5=y
BR2_ARM_CPU_HAS_THUMB2=y
BR2_ARM_CPU_ARMV7M=y
BR2_cortex_m7=y
BR2_ARM_EABI=y
BR2_ARM_SOFT_FLOAT=y
BR2_ARM_INSTRUCTIONS_THUMB2=y
BR2_WGET="wget --passive-ftp -nd -t 3"
BR2_SVN="svn --non-interactive"
BR2_BZR="bzr"
BR2_GIT="git"
BR2_CVS="cvs"
BR2_LOCALFILES="cp"
BR2_SCP="scp"
BR2_HG="hg"
BR2_ZCAT="gzip -d -c"
BR2_BZCAT="bzcat"
BR2_XZCAT="xzcat"
BR2_LZCAT="lzip -d -c"
BR2_TAR_OPTIONS=""
BR2_DEFCONFIG="$(CONFIG_DIR)/defconfig"
BR2_DL_DIR="$(TOPDIR)/dl"
BR2_HOST_DIR="$(BASE_DIR)/host"
BR2_PRIMARY_SITE=""
BR2_BACKUP_SITE="http://sources.buildroot.net"
BR2_KERNEL_MIRROR="https://cdn.kernel.org/pub"
BR2_GNU_MIRROR="http://ftpmirror.gnu.org"
BR2_LUAROCKS_MIRROR="http://rocks.moonscript.org"
BR2_CPAN_MIRROR="http://cpan.metacpan.org"
BR2_JLEVEL=12
BR2_STRIP_strip=y
BR2_STRIP_EXCLUDE_FILES=""
BR2_STRIP_EXCLUDE_DIRS=""
BR2_OPTIMIZE_S=y
BR2_STATIC_LIBS=y
BR2_PACKAGE_OVERRIDE_FILE="$(CONFIG_DIR)/local.mk"
BR2_GLOBAL_PATCH_DIR=""
BR2_COMPILER_PARANOID_UNSAFE_PATH=y
BR2_TOOLCHAIN=y
BR2_TOOLCHAIN_USES_UCLIBC=y
BR2_TOOLCHAIN_BUILDROOT=y
BR2_TOOLCHAIN_BUILDROOT_VENDOR="buildroot"
BR2_TOOLCHAIN_BUILDROOT_UCLIBC=y
BR2_TOOLCHAIN_BUILDROOT_LIBC="uclibc"
BR2_KERNEL_HEADERS_AS_KERNEL=y
BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_20=y
BR2_PACKAGE_LINUX_HEADERS=y
BR2_PACKAGE_UCLIBC=y
BR2_UCLIBC_CONFIG="package/uclibc/uClibc-ng.config"
BR2_UCLIBC_CONFIG_FRAGMENT_FILES=""
BR2_PTHREADS=y
BR2_UCLIBC_INSTALL_UTILS=y
BR2_UCLIBC_TARGET_ARCH="arm"
BR2_PACKAGE_HOST_BINUTILS_SUPPORTS_CFI=y
BR2_BINUTILS_VERSION_2_31_X=y
BR2_BINUTILS_VERSION="2.31.1"
BR2_BINUTILS_EXTRA_CONFIG_OPTIONS=""
BR2_GCC_VERSION_8_X=y
BR2_GCC_VERSION="8.3.0"
BR2_EXTRA_GCC_CONFIG_OPTIONS=""
BR2_TOOLCHAIN_SUPPORTS_ALWAYS_LOCKFREE_ATOMIC_INTS=y
BR2_TOOLCHAIN_SUPPORTS_VARIADIC_MI_THUNK=y
BR2_TOOLCHAIN_HAS_THREADS=y
BR2_TARGET_OPTIMIZATION=""
BR2_TARGET_LDFLAGS=""
BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_16=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_17=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_18=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_19=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_20=y
BR2_TOOLCHAIN_HEADERS_AT_LEAST="4.20"
BR2_TOOLCHAIN_GCC_AT_LEAST_4_3=y
BR2_TOOLCHAIN_GCC_AT_LEAST_4_4=y
BR2_TOOLCHAIN_GCC_AT_LEAST_4_5=y
BR2_TOOLCHAIN_GCC_AT_LEAST_4_6=y
BR2_TOOLCHAIN_GCC_AT_LEAST_4_7=y
BR2_TOOLCHAIN_GCC_AT_LEAST_4_8=y
BR2_TOOLCHAIN_GCC_AT_LEAST_4_9=y
BR2_TOOLCHAIN_GCC_AT_LEAST_5=y
BR2_TOOLCHAIN_GCC_AT_LEAST_6=y
BR2_TOOLCHAIN_GCC_AT_LEAST_7=y
BR2_TOOLCHAIN_GCC_AT_LEAST_8=y
BR2_TOOLCHAIN_GCC_AT_LEAST="8"
BR2_TOOLCHAIN_HAS_MNAN_OPTION=y
BR2_TOOLCHAIN_HAS_SYNC_1=y
BR2_TOOLCHAIN_HAS_SYNC_2=y
BR2_TOOLCHAIN_HAS_SYNC_4=y
BR2_TOOLCHAIN_HAS_ATOMIC=y
BR2_ROOTFS_SKELETON_DEFAULT=y
BR2_TARGET_GENERIC_HOSTNAME="goofy"
BR2_TARGET_GENERIC_ISSUE="Welcome to (Maldus) Buildroot"
BR2_TARGET_GENERIC_PASSWD_SHA256=y
BR2_TARGET_GENERIC_PASSWD_METHOD="sha-256"
BR2_INIT_BUSYBOX=y
BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_DEVTMPFS=y
BR2_ROOTFS_DEVICE_TABLE="system/device_table.txt"
BR2_TARGET_ENABLE_ROOT_LOGIN=y
BR2_TARGET_GENERIC_ROOT_PASSWD=""
BR2_SYSTEM_BIN_SH_BUSYBOX=y
BR2_TARGET_GENERIC_GETTY=y
BR2_TARGET_GENERIC_GETTY_PORT="console"
BR2_TARGET_GENERIC_GETTY_BAUDRATE_KEEP=y
BR2_TARGET_GENERIC_GETTY_BAUDRATE="0"
BR2_TARGET_GENERIC_GETTY_TERM="vt100"
BR2_TARGET_GENERIC_GETTY_OPTIONS=""
BR2_TARGET_GENERIC_REMOUNT_ROOTFS_RW=y
BR2_SYSTEM_DHCP=""
BR2_SYSTEM_DEFAULT_PATH="/bin:/sbin:/usr/bin:/usr/sbin"
BR2_ENABLE_LOCALE_PURGE=y
BR2_ENABLE_LOCALE_WHITELIST="C en_US"
BR2_ROOTFS_USERS_TABLES=""
BR2_ROOTFS_OVERLAY=""
BR2_ROOTFS_POST_BUILD_SCRIPT="board/stmicroelectronics/stm32-post-build.sh"
BR2_ROOTFS_POST_FAKEROOT_SCRIPT=""
BR2_ROOTFS_POST_IMAGE_SCRIPT=""
BR2_ROOTFS_POST_SCRIPT_ARGS=""
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.20"
BR2_LINUX_KERNEL_VERSION="4.20"
BR2_LINUX_KERNEL_PATCH=""
BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="linux_defconfig"
BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES=""
BR2_LINUX_KERNEL_CUSTOM_LOGO_PATH=""
BR2_LINUX_KERNEL_APPENDED_UIMAGE=y
BR2_LINUX_KERNEL_GZIP=y
BR2_LINUX_KERNEL_UIMAGE_LOADADDR="0xC0008000"
BR2_LINUX_KERNEL_DTS_SUPPORT=y
BR2_LINUX_KERNEL_APPENDED_DTB=y
BR2_LINUX_KERNEL_INTREE_DTS_NAME="stm32f746-disco"
BR2_LINUX_KERNEL_CUSTOM_DTS_PATH=""
BR2_PACKAGE_BUSYBOX=y
BR2_PACKAGE_BUSYBOX_CONFIG="package/busybox/busybox-minimal.config"
BR2_PACKAGE_BUSYBOX_CONFIG_FRAGMENT_FILES=""
BR2_PACKAGE_SKELETON=y
BR2_PACKAGE_HAS_SKELETON=y
BR2_PACKAGE_PROVIDES_SKELETON="skeleton-init-sysv"
BR2_PACKAGE_SKELETON_INIT_COMMON=y
BR2_PACKAGE_SKELETON_INIT_SYSV=y
BR2_PACKAGE_PULSEAUDIO_HAS_ATOMIC=y
BR2_PACKAGE_GOOGLE_BREAKPAD_ARCH_SUPPORTS=y
BR2_PACKAGE_LTP_TESTSUITE_ARCH_SUPPORTS=y
BR2_PACKAGE_LTRACE_ARCH_SUPPORTS=y
BR2_PACKAGE_OPROFILE_ARCH_SUPPORTS=y
BR2_PACKAGE_TCF_AGENT_ARCH="arm"
BR2_PACKAGE_TCF_AGENT_ARCH_SUPPORTS=y
BR2_PACKAGE_CMAKE_ARCH_SUPPORTS=y
BR2_PACKAGE_PROVIDES_HOST_GETTEXT="host-gettext-tiny"
BR2_PACKAGE_NETSURF_ARCH_SUPPORTS=y
BR2_PACKAGE_QT5_JSCORE_AVAILABLE=y
BR2_PACKAGE_FLASHROM_ARCH_SUPPORTS=y
BR2_PACKAGE_SEDUTIL_ARCH_SUPPORTS=y
BR2_PACKAGE_HOST_ERLANG_ARCH_SUPPORTS=y
BR2_PACKAGE_ERLANG_ARCH_SUPPORTS=y
BR2_PACKAGE_GAUCHE_ARCH_SUPPORTS=y
BR2_PACKAGE_JAMVM_ARCH_SUPPORTS=y
BR2_PACKAGE_PROVIDES_HOST_LUAINTERPRETER="host-lua"
BR2_PACKAGE_LUAJIT_ARCH_SUPPORTS=y
BR2_PACKAGE_HOST_MONO_ARCH_SUPPORTS=y
BR2_PACKAGE_MONO_ARCH_SUPPORTS=y
BR2_PACKAGE_HOST_OPENJDK_BIN_ARCH_SUPPORTS=y
BR2_PACKAGE_OPENJDK_ARCH_SUPPORTS=y
BR2_PACKAGE_FDK_AAC_ARCH_SUPPORTS=y
BR2_PACKAGE_OPENAL_ARCH_SUPPORTS=y
BR2_PACKAGE_WEBRTC_AUDIO_PROCESSING_ARCH_SUPPORTS=y
BR2_PACKAGE_ZLIB_NG_ARCH_SUPPORTS=y
BR2_PACKAGE_PROVIDES_HOST_ZLIB="host-libzlib"
BR2_PACKAGE_BOTAN_ARCH_SUPPORTS=y
BR2_PACKAGE_LIBGPG_ERROR_ARCH_SUPPORTS=y
BR2_PACKAGE_LIBGPG_ERROR_SYSCFG="arm-unknown-linux-gnueabi"
BR2_PACKAGE_PROVIDES_HOST_OPENSSL="host-libopenssl"
BR2_PACKAGE_MONGODB_ARCH_SUPPORTS=y
BR2_PACKAGE_LIBOPENH264_ARCH_SUPPORTS=y
BR2_PACKAGE_CANFESTIVAL_ARCH_SUPPORTS=y
BR2_PACKAGE_CLASSPATH_ARCH_SUPPORTS=y
BR2_PACKAGE_JEMALLOC_ARCH_SUPPORTS=y
BR2_PACKAGE_LIBATOMIC_OPS_ARCH_SUPPORTS=y
BR2_PACKAGE_LIBBSD_ARCH_SUPPORTS=y
BR2_PACKAGE_LIBNSPR_ARCH_SUPPORT=y
BR2_PACKAGE_LIBSECCOMP_ARCH_SUPPORTS=y
BR2_PACKAGE_LLVM_ARCH_SUPPORTS=y
BR2_PACKAGE_LLVM_TARGET_ARCH="ARM"
BR2_PACKAGE_QEMU_ARCH_SUPPORTS_TARGET=y
BR2_PACKAGE_HAPROXY_ARCH_SUPPORTS=y
BR2_PACKAGE_IFUPDOWN_SCRIPTS=y
BR2_PACKAGE_MONGREL2_LIBC_SUPPORTS=y
BR2_PACKAGE_AUDIT_ARCH_SUPPORTS=y
BR2_PACKAGE_EFIVAR_ARCH_SUPPORTS=y
BR2_PACKAGE_INITSCRIPTS=y
BR2_PACKAGE_SYSTEMD_ARCH_SUPPORTS=y
BR2_PACKAGE_SYSTEMD_BOOTCHART_ARCH_SUPPORTS=y
BR2_TARGET_ROOTFS_CPIO=y
BR2_TARGET_ROOTFS_CPIO_NONE=y
BR2_TARGET_ROOTFS_INITRAMFS=y
BR2_TARGET_AFBOOT_STM32=y
BR2_TARGET_UBOOT=y
BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
BR2_TARGET_UBOOT_LATEST_VERSION=y
BR2_TARGET_UBOOT_VERSION="2019.07"
BR2_TARGET_UBOOT_PATCH=""
BR2_TARGET_UBOOT_USE_DEFCONFIG=y
BR2_TARGET_UBOOT_BOARD_DEFCONFIG="stm32f746-disco"
BR2_TARGET_UBOOT_CONFIG_FRAGMENT_FILES=""
BR2_TARGET_UBOOT_FORMAT_BIN=y
BR2_TARGET_UBOOT_FORMAT_DTB_BIN=y
BR2_TARGET_UBOOT_SPL=y
BR2_TARGET_UBOOT_SPL_NAME="spl/u-boot-spl.bin"
BR2_TARGET_UBOOT_CUSTOM_DTS_PATH=""
BR2_TARGET_UBOOT_CUSTOM_MAKEOPTS=""
BR2_PACKAGE_HOST_GO_HOST_ARCH_SUPPORTS=y
BR2_PACKAGE_HOST_GO_BOOTSTRAP_ARCH_SUPPORTS=y
BR2_PACKAGE_HOST_GOOGLE_BREAKPAD_ARCH_SUPPORTS=y
BR2_PACKAGE_HOST_OPENOCD=y
BR2_PACKAGE_HOST_PATCHELF=y
BR2_PACKAGE_HOST_QEMU_ARCH_SUPPORTS=y
BR2_PACKAGE_HOST_QEMU_SYSTEM_ARCH_SUPPORTS=y
BR2_PACKAGE_HOST_QEMU_USER_ARCH_SUPPORTS=y
BR2_PACKAGE_HOST_RUSTC_ARCH_SUPPORTS=y
BR2_PACKAGE_HOST_RUSTC_ARCH="arm"
BR2_PACKAGE_HOST_RUSTC_ABI="eabi"
BR2_PACKAGE_PROVIDES_HOST_RUSTC="host-rust-bin"
BR2_PACKAGE_HOST_TI_CGT_PRU_ARCH_SUPPORTS=y
BR2_PACKAGE_HOST_UBOOT_TOOLS=y
BR2_XTENSA_OVERLAY_DIR=""
BR2_XTENSA_CUSTOM_NAME=""
BR2_TARGET_ROOTFS_EXT2_BLOCKS=0
BR2_TARGET_ROOTFS_EXT2_EXTRA_INODES=0
BR2_TARGET_ROOTFS_EXT2_EXTRA_BLOCKS=0
BR2_TARGET_UBOOT_CUSTOM_PATCH_DIR=""
BR2_PACKAGE_TZDATA_ZONELIST=""
BR2_TARGET_UBOOT_CUSTOM_GIT_REPO_URL=""
BR2_TARGET_UBOOT_CUSTOM_GIT_VERSION=""
BR2_LINUX_KERNEL_CUSTOM_GIT_REPO_URL=""
BR2_LINUX_KERNEL_CUSTOM_GIT_VERSION=""
리눅스:
CONFIG_NO_HZ_IDLE=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_PREEMPT=y
CONFIG_LOG_BUF_SHIFT=16
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE="${BR_BINARIES_DIR}/rootfs.cpio"
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_EMBEDDED=y
CONFIG_ARCH_STM32=y
CONFIG_CPU_V7M_NUM_IRQ=240
CONFIG_SET_MEM_PARAM=y
CONFIG_DRAM_BASE=0x90000000
CONFIG_FLASH_MEM_BASE=0x08000000
CONFIG_FLASH_SIZE=0x00200000
CONFIG_ZBOOT_ROM_TEXT=0x0
CONFIG_ZBOOT_ROM_BSS=0x0
CONFIG_ARM_APPENDED_DTB=y
CONFIG_BINFMT_FLAT=y
CONFIG_BINFMT_SHARED_FLAT=y
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_EEPROM_93CX6=y
CONFIG_KEYBOARD_GPIO=y
CONFIG_SERIAL_NONSTANDARD=y
CONFIG_SERIAL_STM32=y
CONFIG_SERIAL_STM32_CONSOLE=y
CONFIG_I2C=y
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_STM32F4=y
CONFIG_I2C_STM32F7=y
CONFIG_GPIO_STMPE=y
CONFIG_WATCHDOG=y
CONFIG_MFD_STMPE=y
CONFIG_REGULATOR=y
CONFIG_REGULATOR_FIXED_VOLTAGE=y
CONFIG_MMC=y
CONFIG_MMC_ARMMMCI=y
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
CONFIG_LEDS_GPIO=y
CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_STM32=y
CONFIG_DMADEVICES=y
CONFIG_STM32_DMA=y
CONFIG_STM32_DMAMUX=y
CONFIG_STM32_MDMA=y
CONFIG_IIO=y
CONFIG_STM32_ADC_CORE=y
CONFIG_STM32_ADC=y
CONFIG_EXT3_FS=y
CONFIG_NLS=y
CONFIG_CRC_ITU_T=y
CONFIG_CRC7=y
CONFIG_PRINTK_TIME=y
CONFIG_DEBUG_INFO=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_DEBUG_USER=y
CONFIG_DEBUG_LL=y
CONFIG_DEBUG_UNCOMPRESS=y
CONFIG_EARLY_PRINTK=y
답변1
커널을 메모리에 로드하고 체크섬을 확인할 수 있으니 메모리가 제대로 설정됐나 봅니다.
부팅 중에 장치 트리를 로드하지 않는 것 같아서 u-boot bootz명령이 콘솔 인수와 컴퓨터 번호를 사용하여 실행될 것으로 추측합니다. printenv실제 부팅 프로세스를 추적하려면 u-boot를 사용하세요 .
다음은 비슷한 증상을 추적하기 위해 제가 사용하는 링크입니다. 내 경우에는 사용자 정의 장치 트리 파일이 있었는데 compatibleCPU 값에 오타가 있어서 Linux가 해당 드라이버를 찾을 수 없었습니다.
답변2
UART가 잘못 구성되었을 수 있습니다. gdb어디가 붙어 있는지 확인해 보셨나요 ?
나에게는 그렇습니다 usart1 clock not enabled.
나는 변했어
clocks = <&rcc 0 STM32F7_APB2_CLOCK(USART1)>
바꾸다
<&rcc 1 CLK_USART1>
그러나 커널이 usart 게이트 클럭을 구성할 때 오류가 발생하더라도 커널 실행은 중단되지 않습니다.