工具使用說(shuō)明actduino啟動(dòng)時(shí)間優(yōu)化指南v

1、ActDuino S500_啟動(dòng)時(shí)間優(yōu)化指南最新版本：1.02015-04-08ActDuino S500_ 啟動(dòng)時(shí)間優(yōu)化指南1 目錄12錄1言2目引2.12.2編寫(xiě)目的2術(shù)語(yǔ)和縮寫(xiě)詞2概 述2生成啟動(dòng)數(shù)據(jù)文件3kernel打開(kāi)調(diào)試配置3編譯生成kernel鏡像3更新kernel鏡像和刪除數(shù)據(jù)文件3抓取開(kāi)機(jī)到主界面的串口打印4344.14.24.34.44.5腳本提取文件4用5更新啟動(dòng)數(shù)據(jù)文件4測(cè)試啟動(dòng)數(shù)據(jù)文件4替換啟動(dòng)數(shù)據(jù)文件5kernel關(guān)閉調(diào)試配置5編譯生成新固件5測(cè)試啟動(dòng)優(yōu)化結(jié)果6測(cè)試條件6測(cè)試結(jié)果6參考資料6版本歷史7.85.15.25.35.466.16.2789版本：1.0第 1

2、 頁(yè)ActDuino S500_ 啟動(dòng)時(shí)間優(yōu)化指南2 引言2.1 編寫(xiě)目的本文檔主要幫助的客戶(hù)熟悉如何優(yōu)化啟動(dòng)時(shí)間，讓客戶(hù)能夠生成和替換啟動(dòng)數(shù)據(jù)文件，并正確集成到固件中。2.2術(shù)語(yǔ)和縮寫(xiě)詞3 概述由于每個(gè)樣機(jī)的硬件性能差異（DDR 和 NAND 性能不同）和流程差異（內(nèi)置 APK不同），啟動(dòng)時(shí)間優(yōu)化需要每個(gè)版型（樣機(jī)）單獨(dú)更新啟動(dòng)數(shù)據(jù)文件，并重新生成固件，下面主要從這兩方面進(jìn)行講述。版本： 1.0第 2 頁(yè)縮寫(xiě)和術(shù)語(yǔ)解 釋無(wú)ActDuino S500_ 啟動(dòng)時(shí)間優(yōu)化指南4 生成啟動(dòng)數(shù)據(jù)文件主要步驟：先制作一個(gè)帶調(diào)試的 kernel 鏡像，更新樣機(jī)中的 kernel 鏡像，刪除啟動(dòng)數(shù)據(jù)文件，重啟

3、后抓取開(kāi)機(jī)到主界面串口打印，再用 PC 腳本轉(zhuǎn)換成啟動(dòng)數(shù)據(jù)文件。4.1 kernel 打開(kāi)調(diào)試配置打開(kāi) SDK 下的 kernel 配置文件 kernel/arch/arm/configs/atm7059a_mid_defconfig，修改或增加如下配置：4.2 編譯生成 kernel 鏡像在 android 目錄下執(zhí)行編譯 kernel 命令，生成帶調(diào)試的 kernel 鏡像，文件路徑為kernel/arch/arm/boot/uImage，將 uImage 拷貝出來(lái)備用，重命名成 uImage_debug。4.3 更新 kernel 鏡像和刪除數(shù)據(jù)文件樣機(jī)打開(kāi) adb 并連接好usb 線(xiàn)，

4、執(zhí)行如下 adb 命令更新kernel 鏡像和刪除啟動(dòng)數(shù)據(jù)文件。版本： 1.0第 3 頁(yè)adb rootadb wait-for-device adb remountadb shell mount -o remount,rw /misc adb push uImage_debug /misc/uImageadb shell rm /system/etc/ahead_file_blocks adb shell syncrm kernel/.config./autobuild.sh kernelcp kernel/arch/arm/boot/uImage ./uImage_debugCONFIG_

5、LOG_BUF_SHIFT=21 CONFIG_DEBUG_DUMP=yActDuino S500_ 啟動(dòng)時(shí)間優(yōu)化指南4.4 抓取開(kāi)機(jī)到主界面的串口打印正常重啟樣機(jī)，為避免 logbuf 滿(mǎn)導(dǎo)致丟數(shù)據(jù)，啟動(dòng)時(shí)盡可能早在串口終端輸入如下命令，小機(jī)能看到鎖屏界面時(shí)（啟動(dòng)完畢）終止該命令，多測(cè)試幾次盡量抓到開(kāi)機(jī)完整的打印。4.5 用腳本提取文件樣機(jī)連接 adb，切換當(dāng)前命令行到 android sdk 下的 tools 目錄，執(zhí)行如下命令獲取之前保存的串口打印文件。將 SDK 中 owl/gs705a/config/scripts/blocks_digest.py 腳本拷貝到 PC 端 androi

6、d sdk 下的tools 目錄下，保持樣機(jī)的 adb 連接，執(zhí)行如下命令等待一段時(shí)間后，生成啟動(dòng)數(shù)據(jù)文件ahead_file_blocks，將此文件拷貝出來(lái)備用。5 更新啟動(dòng)數(shù)據(jù)文件主要步驟：將啟動(dòng)數(shù)據(jù)文件通過(guò) adb push 到樣機(jī)來(lái)驗(yàn)證優(yōu)化效果，測(cè)試生效后再替換版型下的啟動(dòng)數(shù)據(jù)文件，生成新固件。5.1 測(cè)試啟動(dòng)數(shù)據(jù)文件生成的數(shù)據(jù)文件ahead_file_blocks 通過(guò) adb push 到樣機(jī)來(lái)驗(yàn)證啟動(dòng)時(shí)間，將執(zhí)行如下命令，再重啟樣機(jī)測(cè)試上電 logo 到主界面顯示的時(shí)間。版本： 1.0第 4 頁(yè)chcp 437monkeyrunner.bat blocks_digest.pyad

7、b rootadb wait-for-deviceadb pull /data/kernel_log.txtcat /proc/kmsg /data/kernel_log.txtActDuino S500_ 啟動(dòng)時(shí)間優(yōu)化指南5.2 替換啟動(dòng)數(shù)據(jù)文件啟動(dòng)時(shí)間優(yōu)化驗(yàn)證生效后，將啟動(dòng)數(shù)據(jù)文件ahead_file_blocks 拷貝到 SDK 版型下的android/etc 目錄，替換之前的文件。5.3 kernel 關(guān)閉調(diào)試配置打開(kāi) SDK 下的 kernel 配置文件 kernel/arch/arm/configs/atm7059a_mid_defconfig，關(guān)閉調(diào)試配置（即恢復(fù)之前的配置）：5

8、.4 編譯生成新固件如果沒(méi)有完整編譯過(guò)，先選擇版型再編譯，執(zhí)行如下命令生成新固件：如果已經(jīng)完整編譯過(guò)，執(zhí)行如下命令生成新固件：版本： 1.0第 5 頁(yè)rm kernel/.config./autobuild.sh kernel./autobuild.sh image./autobuild.sh otazip./autobuild.sh target./autobuild.shCONFIG_LOG_BUF_SHIFT=17#CONFIG_DEBUG_DUMP=yadb rootadb wait-for-device adb remountadb pushahead_file_blocks /sy

9、stem/etc adb shell syncActDuino S500_ 啟動(dòng)時(shí)間優(yōu)化指南6 測(cè)試啟動(dòng)優(yōu)化結(jié)果6.1 測(cè)試條件測(cè)試請(qǐng)遵守如下幾點(diǎn)原則：（1）（2）（3）（4）量產(chǎn)后沒(méi)有安裝 apk 和打開(kāi) wifi 等操作。沒(méi)有 sd 卡，沒(méi)有連接 usb 線(xiàn)，沒(méi)有接 adapter。從按鍵 onoff 顯示上電 logo 開(kāi)始計(jì)時(shí)。量產(chǎn)后第一次啟動(dòng)不統(tǒng)計(jì)，從第二次啟動(dòng)開(kāi)始統(tǒng)計(jì)。6.2 測(cè)試結(jié)果特定機(jī)型第一次更新數(shù)據(jù)文件，啟動(dòng)時(shí)間情況下會(huì)有 10%20%的提升；如果在硬件和固件都沒(méi)有修改的情況下再次更新數(shù)據(jù)文件，提升的效果就不是很明顯。7 參考資料無(wú)版本：1.0第 6頁(yè)ActDuinoS50

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