目前JETPACK SDK镜像是4.5.1版

Jetson Nano 4G 内存版，下载链接：https://developer.nvidia.com/jetson-nano-sd-card-image

Jetson Nano 2G内存版，下载链接：https://developer.nvidia.com/jetson-nano-2gb-sd-card-image

系统镜像6G，默认安装ubuntu desktop等桌面软件，体积非常大，如果项目开发完成，想要将工程文件直接集成到镜像里，进行批量烧录，那么可以通过自制镜像的方式来实现。以下针对Nano版整理的制作方法。

一、下载BSP并解压

之前买了一片友善之臂NEO2做NAS，配置了aria2远程服务，下载百度云盘的资源，速度还不错。
但需要下载迅雷链接时，就没有办法了。
以前用Raspberry Pi 1代时，可以用迅雷的嵌入式版本Xware_armel_v5te_glibc.tar.gz
后来用pi3， neo2这种arm64处理器的板子时就无法使用了。

会提示“-bash: ./portal: No such file or directory” 。

今天突然想到，完全可以安装armhf的运行时呀。就好像在Ubunt下安装的一系列i386库一样。
继续阅读

在编译Tom3q所写s3c6410 android 图形驱动模块(g2d,g3d)时,遇到如下错误

[aliang@Eadith g2d]$ make KDIR=~/source/Android/linux-2.6.36-android/
make --no-print-directory -C /home/aliang/source/Android/linux-2.6.36-android/ SUBDIRS=/home/aliang/source/openfimg/modules/g2d modules
  CC [M]  /home/aliang/source/openfimg/modules/g2d/s3c_g2d_driver.o
In file included from /home/aliang/source/openfimg/modules/g2d/s3c_g2d_driver.c:46:0:
arch/arm/plat-samsung/include/plat/pm.h:104:39: warning: 'struct sys_device' declared inside parameter list
arch/arm/plat-samsung/include/plat/pm.h:104:39: warning: its scope is only this definition or declaration, which is probably not what you want
arch/arm/plat-samsung/include/plat/pm.h:105:38: warning: 'struct sys_device' declared inside parameter list
/home/aliang/source/openfimg/modules/g2d/s3c_g2d_driver.c: In function 's3c_g2d_open':
/home/aliang/source/openfimg/modules/g2d/s3c_g2d_driver.c:783:2: error: implicit declaration of function 'kmalloc'
/home/aliang/source/openfimg/modules/g2d/s3c_g2d_driver.c:783:6: warning: assignment makes pointer from integer without a cast
/home/aliang/source/openfimg/modules/g2d/s3c_g2d_driver.c: In function 's3c_g2d_release':
/home/aliang/source/openfimg/modules/g2d/s3c_g2d_driver.c:806:2: error: implicit declaration of function 'kfree'
/home/aliang/source/openfimg/modules/g2d/s3c_g2d_driver.c: At top level:
/home/aliang/source/openfimg/modules/g2d/s3c_g2d_driver.c:817:2: error: unknown field 'ioctl' specified in initializer
/home/aliang/source/openfimg/modules/g2d/s3c_g2d_driver.c:817:2: warning: initialization from incompatible pointer type
/home/aliang/source/openfimg/modules/g2d/s3c_g2d_driver.c: In function 's3c_g2d_probe':
/home/aliang/source/openfimg/modules/g2d/s3c_g2d_driver.c:837:7: warning: assignment makes pointer from integer without a cast
make[2]: *** [/home/aliang/source/openfimg/modules/g2d/s3c_g2d_driver.o] 错误 1
make[1]: *** [_module_/home/aliang/source/openfimg/modules/g2d] 错误 2
make: *** [all] 错误 2

红字部分是主要错误，“kmalloc”，“kfree”错误是由于缺少头文件引起的

#include <linux/slab.h>

添加后解决

error: unknown field 'ioctl' specified in initializer

问题是由于2.6.36内核之后 去掉了原来的ioctl，添加两个新的成员，所以会出错

1. long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
2. long (*compat_ioctl) (struct file *, unsigned int, unsigned long);

所以修改源文件中file_operations内

.ioctl 改为 .compat_ioctl 即可

OK，编译通过，警告咱就忽略了?:mrgreen: