6、loglevel loglevel=8: 设置了内核日志级别为 8,用于控制内核消息的输出级别。 个人单板使用: setenv bootcmd 'nfs 0x80800000 192.168.31.230:/home/lethe/linux/nfs/zImage;nfs 0x83000000 192.168.31.230:/home/lethe/linux/nfs/imx6ull-lethe2.dtb;bootz 80800000 - 83000000' setenv bootargs 'console=t...
1:开机停留在uboot界面,即uboot处于board_r.c中的run_main_loop()的死循环中 2:确保rootfs,kernel和dts已烧写在emmc或者sd卡 3: setenv bootargs " CONFIG_BOOTARGS_LOGLEVEL \ " root=${mmcroot} earlycon isolcpus=2,3" \ 展开为setenv bootargs root=/dev/mmcblk0p1 rootwait rw earlycon isolcpus=2...
1:开机停留在uboot界面,即uboot处于board_r.c中的run_main_loop()的死循环中 2:确保rootfs,kernel和dts已烧写在emmc或者sd卡 3: setenv bootargs " CONFIG_BOOTARGS_LOGLEVEL \ " root=${mmcroot} earlycon isolcpus=2,3" \ 展开为setenv bootargs root=/dev/mmcblk0p1 rootwait rw earlycon isolcpus=2...
ignore_loglevel 忽略内核日志等级的设置,向控制台输出所有内核消息。仅用于调试目的。 bootargs=noinitrd root=/dev/mtdblock2 rootfstype=yaffs2 rootflags=inband-tags console=ttyS0 rdinit=/sbin/init mem=64M mtdparts=nand0:0x200000@0x0(u-boot),0x1400000@0x200000(kernel),-(user) ignore_loglevel ...
setargs_nand=setenv bootargs console=${console} root=${nand_root} rootwait init=${init} rdinit=${rdinit} loglevel=${loglevel} earlyprintk=${earlyprintk} initcall_debug=${initcall_debug} loglevel=${loglevel} partitions=${partitions} cma=${cma} gpt=1 backlight=${backlight} ...
"setenv bootargs 'root=/dev/mmcblk0p2 rw rootfstype=ext4 rootwait earlycon console=ttyAMA0 init=/linuxrc ignore_loglevel';"\ "bootz 0x60008000 - 0x61000000;" 1. 2. 3. 4. 重新编译 make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- -j8 ...
chosen { bootargs = "console=ttyS0,115200 loglevel=8"; initrd-start = <0xc8000000>; ...
setargs_nand=setenv bootargs console=${console}console=tty0 root=${nand_root}init=${init}loglevel=${loglevel}partitions=${partitions}initcall_debug=${initcall_debug} 加入后,内核启动时就会有类似如下的打印,对于耗时较多的initcall,可进行深入优化。
[color=rgb(51, 51, 51) !important]early_init_dt_scan_chosen用于扫描chosen节点,并把bootargs属性值拷贝到boot_command_line中,如果内核定义了CONFIG_CMDLINE这个宏,则把配置的命令行参数也拷贝到boot_command_line; /* * Convert configs to something easy to use in C code */#if defined(CONFIG_CMDLINE...
1.3.2.1 内核bootargs来源对于开发板开发板而言，r2设置为了rk3588-nanopi6-rev01.dtb加载到内存的...