redboot在ixp425上的移植和使用总结

redboot൘ཆ㖞㖁ޣкⲴ〫Ἵ઼֯⭘ᙫ㔃аǃRedbootᾲ䘠RedbootᱟRedhatޜਨ䲿eCosਁᐳⲴањBOOTᯩṸˈᱟањᔰⓀ亩ⴞDŽRedboot᭟ᤱⲴ༴⨶ಘᶴᷦᴹARMˈMIPSˈMN10300ˈPowerPCˈRenesasSHxˈv850ˈx86ㅹˈᱟањᆼழⲴ፼ޕᔿ㌫㔏BootLoaderDŽRedbootᱟ൘ECOSⲴส⹰к࢕⿫ࠪᶕⲴˈ㔗᢯ҶECOSⲴㆰ⌱ǃ䖫ᐗǃਟ⚥⍫䝽㖞ǃっᇊਟ䶐ㅹ૱䍘Ո⛩DŽᆳਟԕ֯⭘X-modemᡆY-modemॿ䇞㓿⭡Ѣਓл䖭ˈҏਟԕ㓿⭡ԕཚ㖁ਓ䙊䗷BOOTP/DHCPᴽ࣑㧧ᗇIP৲ᮠˈ֯⭘TFTPᯩᔿл䖭〻ᒿ᱐ۿ᮷Ԧˈᑨ⭘Ҿ䈳䈅᭟ᤱ઼㌫㔏ࡍ࿻ॆ˄Flashл䖭ᴤᯠ઼㖁㔌੟ࣘ˅DŽRedbootਟԕ䙊䗷Ѣਓ઼ԕཚ㖁ਓоGDB䘋㹼䙊ؑˈ䈳䈅ᓄ⭘〻ᒿˈ⭊㠣㜭ѝᯝ㻛GDB䘀㹼Ⲵᓄ⭘〻ᒿDŽRedbootѪ㇑⨶FLASH᱐ۿˈ᱐ۿл䖭ˈRedboot䝽㖞ԕ৺ަԆྲѢਓǃԕཚ㖁ਓᨀ׋ҶањӔӂᔿભԔ㹼᧕ਓˈ㠚ࣘ੟ࣘਾˈREDBOOT⭘ᶕӾTFTPᴽ࣑ಘᡆ㘵ӾFlashл䖭᱐ۿ᮷Ԧ࣐䖭㌫㔏Ⲵᕅሬ㝊ᵜ᮷Ԧ؍ᆈ൘FlashкDŽᖃࡽ᭟ᤱঅᶯᵪⲴ〫Ἵ⡸⢩ᙗᴹ˖᭟ᤱECOSˈLinux᫽֌㌫㔏ᕅሬ൘㓯䈫߉Flash᭟ᤱѢ㹼ਓkermitˈS-recordл䖭ԓ⸱ⴁ᧗(minitor)ભԔ䳶:䈫߉I/Oˈ޵ᆈˈᇴᆈಘǃ޵ᆈǃཆ䇮⍻䈅࣏㜭ㅹDŽRedbootᱟањᷦᶴ൘eCosHALоDeviceDriverкⲴа྇ᓄ⭘〻ᒿˈ㔗᢯ҶeCos⁑ඇॆ㔃ᶴⲴ⢩⛩DŽ䟷⭘ྲлṶᷦ㔃ᶴ˖Figure1REDBOOTṼᷬRedbootᱟḷ߶Ⲵ፼ޕᔿ䈳䈅઼ᕅሬ䀓ߣᯩṸˈ᭟ᤱࠐѾᡰᴹⲴ༴⨶ಘᶴᷦԕ৺བྷ䟿Ⲵཆത⺜Ԧ᧕ਓˈᒦф䘈൘нᯝൠᆼழ䗷〻ѝDŽᵜ᮷䟷⭘ⲴⲴredboot⡸ᵜᱟ᭟ᤱintelixp425㣟⡷Ⲵredboot2.04⡸ᵜDŽҼǃRedboot൘ixp425ᒣਠкⲴ〫Ἵ2.1ǃRedbootᔰਁ⧟ຳⲴᔪ・Redbootᔰਁ⧟ຳѫ㾱ѪredbootӔ৹㕆䈁ᐕާ઼redbootⓀ⸱वˈ䘉єњ䜭ਟԕ൘intelⲴ㖁ㄉ᢮ࡠ⴨ᓄⲴл䖭䬮᧕DŽሶл䖭ⲴredbootⲴӔ৹㕆䈁ᐕާi686-pc-linux-gnulibc2.2-x-xscale-elf.tar.gz˄ྭۿ⭘ަԆⲴӔ৹㕆䈁ᐕާ㕆䈁redbootཡ䍕˅䀓঻ࡠ֐ᜣ㾱Ⲵⴞᖅѝˈྲ᷌ᜣᯩׯ⛩ᓄ⭘ˈሶ䈕ᐕާxscale-elf-gccᡰ൘Ⲵ䐟ᖴ࣐ޕࡠ.bash_profile᮷ԦⲴPATH䇮㖞ѝDŽሶredbootⲴⓀ⸱ᔰਁव䀓঻ࡠ֐Ⲵᐕ֌ⴞᖅণਟDŽ㠣↔redbootⲴᔰਁ⧟ຳᖸㆰঅⲴᔪ・䎧ᶕҶDŽ2.2ǃecosconfigᐕާⲴ㕆䈁Ecosconfigᐕާᱟ㕆䈁ࡽ䀓䟺઼ᇎ⧠rebootⲴ਴亩䝽㖞Ⲵ䟽㾱ᐕާDŽ൘redboot᮷ԦཀྵлⲴbinⴞᖅлҏᴹањ㕆䈁ྭⲴecosconfigᐕާˈնᱟ䘉њᐕާнᱟ൘⧠൘Ⲵѫᵪᒣਠк㕆䈁Ⲵˈᡰ⭘Ⲵ䘎᧕ᓃѻ㊫䐏ᔰਁѫᵪⲴ⡸ᵜਟ㜭н਼㘼ሬ㠤н㜭䘀㹼Ӿ㘼ሬ㠤н㜭䟽ᯠ㕆䈁redbootDŽᒨ㘼ˈRedbootᵜ䓛㠚ᑖҶ䘉аⓀ⸱˄autoconfig⭏ᡀⲴ㠚䝽㖞᮷Ԧ൘redbootⲴhostⴞᖅл˅ˈ׋⭘ᡧ൘䟽ᯠ㕆䈁redbootѻࡽݸ㕆䈁䘉аᐕާˈ䟽ᯠ⭏ӗecosconfigᐕާDŽ㕆䈁Ⲵᯩ⌅ྲл˖1˅ǃ൘redbootⴞᖅлᔪ・᮷Ԧཀྵbuildˈ֌Ѫredboot઼ecosconfig㕆䈁Ⲵ䗃ࠪⴞᖅDŽ2˅cdredboot/buildredboot/host/configure--prefix=$TEMP/redboot-build--with-tcl=/usrmake4)ሶ⭏ᡀⲴecosconfigᐕާᤧ䍍ࡠbinⴞᖅ㾶ⴆᰗⲴecosconfig઼ᤧ䍍ࡠredbootⴞᖅлcpredboot/build/tools/configtool/standalone/common/ecosconfigredboot/bin/cpredboot/build/tools/configtool/standalone/common/ecosconfigredboot2.3ǃཆ㖞㖁ޣredbootⓀ⸱Ⲵ〫Ἵ2.3.1ǃredbootⓀ⸱वѝ᮷Ԧཀྵ઼ࠐ⿽᮷ԦⲴ䈤᰾redbootⲴⓀ⸱䜭൘redbootⴞᖅлⲴpackage᮷ԦཀྵлDŽPackage᮷Ԧཀྵлᴹྲлⴞᖅ˖devsⴞᖅ˖㖁䐟䇮઼༷flash䇮༷傡ࣘhalⴞᖅ˖਴ᒣਠ㌫㔏⺜Ԧ⴨ޣԓ⸱ioⴞᖅ˖ѪIO᫽֌⴨ޣԓ⸱redbootⴞᖅ˖redbootѫ㾱࣏㜭Ⲵ䙊⭘ԓ⸱pkgconfⴞᖅ˖аӋ䝽㖞᫽֌⴨ޣ䘈ᴹаӋᱟ㌫㔏䖵ࣙᙗԓ⸱ᡆ㘵䝽㖞ⲴⴞᖅDŽRedbootⲴ㔗᢯ҶecosⲴਟ䝽㖞⢩ᙗˈ֯⭘CDL˄componentdefinitionlanguage˅䈝䀰᧿䘠㓴ԦⲴ䝽㖞DŽ൘redbootⓀ⸱व䟼ˈᴹࠐ⿽᮷ԦṬᔿ䴰㾱Ҷ䀓ал˖.cdl᮷Ԧ˖൘⇿њ⁑ඇⴞᖅлˈ䜭ᴹањcdl᮷Ԧཀྵˈ䟼䶒वਜ਼Ҷredbootѝ䈕㓴ԦⲴ.cdl᮷Ԧˈ⭘Ҿ᧿䘠䈕㓴ԦⲴ࣏㜭䘹亩ǃ㕪ⴱ䝽㖞ㅹDŽecos.db᮷Ԧ˖սҾpackageⴞᖅл,ᆳवਜ਼є⿽ݳ㍐Package઼TargetDŽPackageᤷ⽪ҶḀањpackageᡰ൘Ⲵ䐟ᖴˈ઼䝽㖞᮷ԦcdlⲴ਽〠˗Targetᤷ⽪Ḁ⿽ⴞḷᵪˈഐ⺜Ԧ䝽㖞䘹䴰㾱ⲴpackageDŽ.ecm᮷Ԧ˖ecosconfigᐕާⲴ䝽㖞Ⲵ䗃ޕ䗃ࠪ᮷ԦDŽ.ecc᮷Ԧ˖ᖃࡽԫ࣑Ⲵ䝽㖞᮷Ԧˈ൘㕆䈁ᰦ⭏ᡀⲴDŽ.ldi᮷Ԧ˖ld䬮᧕㝊ᵜ᮷Ԧ2.3.2ǃTargetⲴ䘹ᤙredbootᨀ׋Ҷ3⿽ᶯᆀⲴ੟ࣘ〻ᒿ䝽㖞ˈ࠶࡛ᱟintelⲴixdp425ǃgrpǃprpmc1100.ṩᦞᡁԜᶯᆀⲴ䝽㖞ˈᡁԜ䘹ᇊ䐏ᡁԜ∄䖳⴨䘁ⲴgrpⲴ䝽㖞֌ѪᡁԜⲴTarget䝽㖞ˈᒦ؞᭩ᐞᔲѻ༴ˈԕㅖਸᡁԜⲴᶯᆀ䝽㖞DŽ2.3.3ǃ൘੟ࣘ༴؞᭩vector.S᮷Ԧˈ؞᭩⛩⚟〻ᒿ⭡Ҿཆ㖞㖁ޣᶯᆀкⲴ੟ࣘ⛩⚟ᱟ䟷⭘GPIO⛩ӞⲴˈоredboot唈䇔ᒣਠⲴ䟷⭘IOオ䰤䇯䰞Ⲵн਼ˈᡰԕ䴰㾱؞᭩DŽ؞᭩ᯩᔿྲл˖1˅ǃ൘vector.s᮷ԦⲴੁ䟿㺘ࡽᇊѹ⛩⚟ᆿ〻ᒿ˖.macroled_gd98valldrr1,=IXP425_GPIO_CFG_BASEldrr0,=0x7ff1strr0,[r1,#IXP425_GPOER]//setgpioline1,2,3outputdriverDELAY0x1000000,r0//setdelayvalueldrr0,=\valstrr0,[r1,#IXP425_GPOUTR]DELAY0x1000000,r0.endm2˅֯⭘led_gd98valᴯᦒ〻ᒿѝⲴLEDxᆿ䈳⭘ˈxᆿLEDⲴ৲ᮠDŽ3˅ࡐ䲔packages\hal\arm\xscale\grg\current\include\grg.hѝDISPLAYᆿᇊѹⲴ޵ᇩ઼LED⴨ޣⲴ޵ᇩDŽ2.3.4ǃ؞᭩UART઼ᶯIDਧRedbootgrg֯⭘Ѣਓ1ˈ㘼ᡁԜⲴᶯᆀ֯⭘Ѣਓ0˄൘2.04⡸ᵜѝˈ唈䇔֯⭘com0Ҷˈᡰԕн⭘᭩Ҷˈնᱟ৏ᶕᔰਁᶯⲴ᮷ẓᮠ↔༴䴰؞᭩˅DŽ൘੟ࣘlinuxⲴᰦىˈbootloadՊ㔉linuxՐ䙂ᶯᆀIDⲴ৲ᮠˈ㘼ᇎ䱵кᡁԜⲴlinux֯⭘Ⲵ䝽㖞䜭ᱟ᤹IXDP425DEMOᶯᶕڊⲴⲴˈᡰԕ൘linux੟ࣘ䎧ᶕਾˈlinux/arch/arm/kernel/head-armv.SѝỰḕᶯᆀID༴䘋ޕ↫ᗚ⧟DŽ؞᭩ᯩ⌅˖Ѣਓ䝽㖞൘packages/hal/arm/xscale/grg/current/cdl/Hal_arm_xscale_grg.cdl᮷ԦѝDŽሶUART1Ⲵdefaultvalue䇮㖞Ѫ1ˈUART2Ⲵdefault䇮㖞Ѫ0DŽᶯᆀIDᇊѹ൘packages/hal/arm/xscale/grg/current/src/redboot_linux_boot.cѝˈ؞᭩#defineCYGHWR_REDBOOT_ARM_MACHINE_TYPEHAL_PLATFORM_MACHINE_TYPEѪ#defineCYGHWR_REDBOOT_ARM_MACHINE_TYPE2452.3.5ǃ໎࣐AMDFlash᭟ᤱ᭟ᤱixp425ⲴRedboot唈䇔ᱟ᭟ᤱintelⲴstrataflashⲴˈᒦнᨀ׋ሩAMDFlashⲴ᭟ᤱˈᡰԕ䴰㾱໎࣐ሩAMDFlashⲴ᭟ᤱDŽᡁԜ䘹⭘ⲴFlashѪAMD29LV640Xˈ䐏intelⲴFlash൘᫽֌кެᇩˈᡰԕਚ䴰〫Ἵ⴨ޣ䝽㖞᮷ԦণਟDŽ〫Ἵᯩ⌅ྲл˖1˅ǃ൘㖁кл䖭ecosⓀ⸱वˈ䀓঻ਾሶecos/package/devs/flash/лⲴamdⴞᖅᤧ䍍ࡠredboot/package/devs/flashⴞᖅлDŽ2˅ǃ〫Ἵ䗷ᶕⲴamdⴞᖅл⋑ᴹሩamd29lv640M㣟⡷Ⲵ᭟ᤱˈ໎࣐ሩamd29lv640M㣟⡷Ⲵ᭟ᤱDŽ൘packages\devs\flash\amd\am29xxxxx\current\cdl\flash_amd_am29xxxxx.cdlл໎࣐ԕлcdlԓ⸱˖cdl_optionCYGHWR_DEVS_FLASH_AMD_AM29LV640M{displayAMD/SPANSIONAM29LV640Mflashmemorysupportdefault_value0implementsCYGINT_DEVS_FLASH_AMD_VARIANTSdescriptionWhenthisoptionisenabled,theAMD/SPANSIONflashdriverwillbeabletorecognizeandhandletheAM29LV640Mpartinthefamily.}൘\packages\devs\flash\amd\am29xxxxx\current\include\flash_am29xxxxx_parts.inlл໎࣐ԕлԓ⸱˖#ifdefCYGHWR_DEVS_FLASH_AMD_AM29LV640M{//AM29LV640Mlong_device_id:true,device_id:FLASHWORD(0x227e),device_id2:FLASHWORD(0x220c),device_id3:FLASHWORD(0x2201),block_size:0x10000*CYGNUM_FLASH_INTERLEAVE,block_count:128,device_size:0x800000*CYGNUM_FLASH_INTERLEAVE,base_mask:~(0x800000*CYGNUM_FLASH_INTERLEAVE-1),bootblock:false,banked:false,bufsiz:1},#endif3)ǃ൘packages\devs\flash\arm\grg\currentлᔪ・srcⴞᖅˈ൘䈕ⴞᖅлᔪ・grg_flash.c᮷Ԧˈ᮷Ԧ޵ᇩྲл˖grg_flash.c#includecyg/infra/cyg_type.h/*deviceproperties*///Thegrghasone16-bitdevice.//AM29LV640M.#includecyg/io/grg_strataflash.inl//------------------------------------------------------------------------/*Nowincludethedrivercode*/#includecyg/io/flash_am29xxxxx.inlቡᱟሶ䘉єњཤ᮷Ԧवਜ਼䘋ᶕ䘉ѸㆰঅDŽഐѪam29㌫ࡇⲴ傡ࣘवਜ਼൘flash_am29xxxxx.inl᮷Ԧѝˈवਜ਼䘋ᶕ㕆䈁ণਟDŽ4˅ǃሶAMDflashⲴ᭟ᤱ࣐ޕredbootⲴtargetgrgⲴ䝽㖞ѝDŽ俆ݸሶpackages\devs\flash\arm\grg\current\cdl\flash_grg.cdlѝⲴcdl_packageCYGPKG_DEVS_FLASH_GRGᦒᡀ᭟ᤱamdflashⲴ޵ᇩˈྲл˖cdl_packageCYGPKG_DEVS_