内核模块找不到Android设备的固件文件;在那里应该是什么？ [英] kernel module cannot find firmware file on Android device; where should it be?

问题描述

我无法将正确的固件在Android设备上，我不断收到：

I am having trouble placing firmware properly on an Android device, I keep getting:

<3>[ 3590.997375] usb 3-1.4: ath9k_htc: Firmware - htc_7010.fw not found

如果一个标准的Linux机器上运行Ubuntu的，我把htc_7010.fw位于/ lib /固件的话，我没有得到这个错误。

If on a standard linux machine running Ubuntu, I place htc_7010.fw in /lib/firmware then I do not get this error.

不过，如果我把这个固件在Android上/ lib中/固件，我仍然得到错误。我已经尝试了所有的以下目录，仍然收到错误：

However, if I place this firmware in /lib/firmware on Android, I still get the error. I have tried all of the following directories and still receive the error:

/lib/firmware
/etc/firmware
/system/lib/modules
/system/lib/firmware
/system/etc

没有这样的运气...什么决定了固件是应该的，我怎么能确定哪个目录，它是扫描固件？

No such luck... what dictates where the firmware should be, and how could I determine which directories it is scanning for the firmware?

推荐答案

在Android（ICS反正）它有自己的后台程序/服务（或任何你想将它命名），以管理热插拔事件，包括固件请求。在＆LT;机器人＆GT; /system/core/init/devices.c ，有两个的#define s表示指定地点在哪里固件将被检查：

On Android (ICS anyways) it has its own daemon/service (or whatever you want to call it) to manage hotplug events, including firmware requests. In <android>/system/core/init/devices.c, there are two #defines that specify locations where firmware will be checked:

#define FIRMWARE_DIR1   "/etc/firmware"
#define FIRMWARE_DIR2   "/vendor/firmware"

在ICS的文件系统，我最初的版本，的/ etc /固件不存在（和etc目录似乎是在引导创建符号链接/ init的时间）。我只好把固件在我的NFS目录挂载根文件系统是＆LT;挂载点＆GT; /系统的/ etc /固件

On my initial build of the ICS filesystem, /etc/firmware didn't exist (and the etc directory seems to be a symbolic link created at boot/init time). The directory I had to place firmware in on my NFS mounted rootfs was <mount point>/system/etc/firmware

这样做了以后，request_firmware（）调用从我的模块成功完成。

After doing this, request_firmware() calls from my module successfully completed.

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