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TWR-MPC5125 User Manual
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6.3 Configuring U-Boot
To boot the Linux kernel u-boot must have device tree support compiled in. To
verify this support is enabled, type help bootm at the u-boot prompt.
=> help bootm
bootm [addr [arg ...]]
- boot application image stored in memory
passing arguments 'arg ...'; when booting a Linux kernel, 'arg' can be the
address of an initrd image
When booting a Linux kernel which requires a flat device-tree
a third argument is required which is the address of the of the device-tree blob.
To boot that kernel without an initrd image, use a '-' for the second argument. If
you do not pass a third a bd_info struct will be passed instead
If the help message indicates that bootm takes three arguments then device
tree support is enabled. If not then it will be necessary to install a new u-boot.
See the Flashing U-Boot chapter below for details.
The factory installed u-boot has several commands predefined in the default
environment.
1). Print the existing u-boot configuration by typing “print” at the u-boot
prompt.
=> print
bootcmd=run nfsboot
bootdelay=5
baudrate=115200
loads_echo=1
preboot=echo;echo Type \"run flash_nfs\" to mount root filesystem over
NFS;echo
loadaddr=400000
u-boot_addr_r=200000
u-boot_addr=FFF00000
kernel_addr=FC040000
TWR-MPC 5125
16
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相关代理商/技术参数
TWR-MPC5125-PROMO 制造商:Freescale 功能描述:TOWER CD MPC5125
TWR-MPC8309 功能描述:开发板和工具包 - 其他处理器 LC evaluation board RoHS:否 制造商:Freescale Semiconductor 产品:Development Systems 工具用于评估:P3041 核心:e500mc 接口类型:I2C, SPI, USB 工作电源电压:
TWR-P1025 功能描述:开发板和工具包 - 其他处理器 TOWER MODULE P1025 RoHS:否 制造商:Freescale Semiconductor 产品:Development Systems 工具用于评估:P3041 核心:e500mc 接口类型:I2C, SPI, USB 工作电源电压:
TWR-P1025-KIT 功能描述:开发板和工具包 - 其他处理器 QORIQ P1 TWR KIT RoHS:否 制造商:Freescale Semiconductor 产品:Development Systems 工具用于评估:P3041 核心:e500mc 接口类型:I2C, SPI, USB 工作电源电压:
TWRPI-BLE-DEMO 功能描述:蓝牙/802.15.1 开发工具 TWRPI-BLE-DEMO RoHS:否 制造商:Panasonic Electronic Components 产品:Bluetooth Evaluation Kit 工具用于评估:PAN1721 频率:2.4 GHz 接口类型:I2C 工作电源电压:2 V to 3.6 V
TWRPI-MMA6900 功能描述:加速传感器开发工具 MMA6900 SENSOR PLUG-IN RoHS:否 制造商:Murata 工具用于评估:SCA3100-D04 加速:2 g 传感轴:Triple Axis 接口类型:SPI 工作电压:3.3 V
TWRPI-MMA845XQ 功能描述:加速传感器开发工具 Accel TWRPI RoHS:否 制造商:Murata 工具用于评估:SCA3100-D04 加速:2 g 传感轴:Triple Axis 接口类型:SPI 工作电压:3.3 V
TWRPI-MPL115A 制造商:Freescale Semiconductor 功能描述:Tower Board Plug-in MPL115A Pressure Sensor 制造商:Freescale Semiconductor 功能描述:MPL115 SENSOR PLUGIN HARDWARE ONLY