LINUX na AVR (Re: SDRAM - lze nezapojit A12 (spojit s A11) ?)
Jaroslav Buchta
jaroslav.buchta na hascomp.cz
Pondělí Březen 25 12:43:46 CET 2013
Diky hezka prace a divny assembler ;-)
Chapu dobre, ze CLK je generovan timerem a s tim musi byt synchronni
provadeni ostatnich instrukci a nic to nesmi rusit?
Jakych realnych prenosovych rychlosti se asi tak da dosahnout?
Dne 25. 3. 2013 11:55, Jaromir Sukuba napsal(a):
> Tu https://code.google.com/p/retrobsd/source/checkout mate napisane ze
> treba urobit
> svn checkout http://retrobsd.googlecode.com/svn/current/ retrobsd-read-only
> Tu http://retrobsd.org/wiki/doku.php/doc/index mate viac informacii,
> ale hlavne vas bude zaujimat asi toto
> http://retrobsd.org/wiki/doku.php/doc/toolchain-mips ak si to chcete
> cvicne buildnut. Mimochodom, zdrojak pre SDRAM je pisany v PIC32 (MIPS
> M4K) assembleri, zelam Vam prijemnu zabavu pri jeho citani :-)
>
>
>
> 2013/3/25 Jaroslav Buchta <jaroslav.buchta na hascomp.cz>:
>> Asi jsem trosku zabrzdenej dneska, ale stahnul jsem
>> http://retrobsd.googlecode.com/svn/stable/ retrobsd-stable (doufam komplet,
>> musel jsem v Linuxu, pod win se nejak nedarilo) a nic co by se podobalo
>> zdrojaku pro SDRAM tam nemuzu najit...
>> Muzete me pls popostrcit?
>>
>> Dne 24. 3. 2013 12:59, Jaromir Sukuba napsal(a):
>>
>>> Ta vec s SDRAM je moj prispevok do projektu RetroBSD -
>>> http://retrobsd.org/wiki/doku.php/wiki/software
>>> Ostatne veci tu http://jaromir.xf.cz/bsd/bsd_comp.html
>>>
>>> Inak s tymi SDRAM je to pakaren, lepsie je pouzit MCU s SDRAM
>>> driverom, resp. externy driver.
>>>
>>> 2013/3/24 Jaroslav Buchta <jaroslav.buchta na hascomp.cz>:
>>>> Pekne, s tou SDRAM jste se programoval od pocatku nebo se daji nejake
>>>> zdrojaky najit na webu?
>>>> Na prvni pohled mi to prijde dost badani to naprogramovat a vychytat...
>>>> Docela bych to zkusil, pametovych modulu mam plnej suplik a i jinak se
>>>> muze
>>>> takova vetsi RAM v nekterych aplikacich hodit.
>>>>
>>>> Dne 24. 3. 2013 11:15, Jaromir Sukuba napsal(a):
>>>>
>>>>> S takouto vecou by som nevydrzal dlho cakat. Mal som to nadrotovane za
>>>>> jeden vecer a mohol som zacat programovat.
>>>>> Mimochodom, ten UNIX stroj s SDRAM tiez najprv bezal na univerzalke...
>>>>>
>>>>> 2013/3/24 Jaroslav Buchta <jaroslav.buchta na hascomp.cz>:
>>>>>> Me zas nebavi to dratovani, ta deska byla puvodne navrzena na vyrobu v
>>>>>> Cine
>>>>>> za par korun 5x5cm ale nakonec se to dalo do panelu k jinym deskam na
>>>>>> POOL
>>>>>> do pragoboardu ;-)
>>>>>>
>>>>>> Dne 24. 3. 2013 11:04, Jaromir Sukuba napsal(a):
>>>>>>
>>>>>>> Ani mne sa to nepaci, ale snad nebudem na kazdu hovadinu vyrabat
>>>>>>> normalny plosak :-)
>>>>>>>
>>>>>>> Bitbangovanu SDRAM mam pouzitu na UNIX-ovom minipocitaci
>>>>>>>
>>>>>>> https://picasaweb.google.com/111890741167251011072/RetroBSDMinicomputer
>>>>>>>
>>>>>>>
>>>>>>> 2013/3/24 Jaroslav Buchta <jaroslav.buchta na hascomp.cz>:
>>>>>>>> Hezke, ale nelibi se mi pouziti tech modulu - otazkou je, jak slozite
>>>>>>>> je
>>>>>>>> SW
>>>>>>>> zvladnout ovladani SDRAM, na minimalni frekvenci CLK tusim nejak
>>>>>>>> extra
>>>>>>>> citlive nejsou, s takovym STM32F407xxx na 168MHz by to mohlo docela
>>>>>>>> svistet
>>>>>>>> ;-)
>>>>>>>> Me to zatim zase bootuje, protoze jsem to premistil do garaze k
>>>>>>>> notasu
>>>>>>>> co
>>>>>>>> monitoruje TC aby se tak nenudil ;-)
>>>>>>>>
>>>>>>>> Dne 24. 3. 2013 10:07, Jaromir Sukuba napsal(a):
>>>>>>>>
>>>>>>>>> Ja som to urobil takto http://jaromir.xf.cz/arm_emu/arm_emu.html na
>>>>>>>>> PIC32, mam rychlost emulacie asi 110000 instrukcii za sekundu.
>>>>>>>>> Bootuje to asi za 13 minut :-)
>>>>>>>>>
>>>>>>>>> 2013/3/24 Jaroslav Buchta <jaroslav.buchta na hascomp.cz>:
>>>>>>>>>> Tyjo, ono to funguje
>>>>>>>>>>
>>>>>>>>>> http://dmitry.gr/index.php?r=05.Projects&proj=07.%20Linux%20on%208bit
>>>>>>>>>> ;-)
>>>>>>>>>> No to je neco, takovy prace to autorovi muselo dat a pritom takova
>>>>>>>>>> blbost
>>>>>>>>>> ;-) Na te ATXMEGA taky zadna rychlostni hitparada, emuluje asi
>>>>>>>>>> 12-13000
>>>>>>>>>> cyklu /s (puvodni projekt zminuje 10000)
>>>>>>>>>> Prinos HW radice SDRAM neni asi nijak vyrazny, navic jsem do SDRAM
>>>>>>>>>> musel
>>>>>>>>>> dat
>>>>>>>>>> i stav emulovaneho CPU (SoC), protoze ma pres 12kB a nejak mi
>>>>>>>>>> nedoslo,
>>>>>>>>>> ze
>>>>>>>>>> je
>>>>>>>>>> ta XMEGA na tom tak spatne se SRAM.
>>>>>>>>>> No uvidime jestli se za nejakou tu hodinku dokonci bootovani :-P
>>>>>>>>>>
>>>>>>>>>> Kazdopadne tam ma autor pouzitou nejakou slabsi implementaci SD, na
>>>>>>>>>> moji
>>>>>>>>>> mikroSD se to absolutne nechytalo, snazil jsem se to priohnout par
>>>>>>>>>> hodin
>>>>>>>>>> ale
>>>>>>>>>> inicializace karty je tam nejaka divna - tak jsem to napasoval na
>>>>>>>>>> ten
>>>>>>>>>> prvni
>>>>>>>>>> odkaz od p Astera a tam je implementace super, funguje jak SD tak
>>>>>>>>>> SDHC
>>>>>>>>>> a
>>>>>>>>>> podpora FAT je tam take hezky udelana - dokonce ma i hezky shell
>>>>>>>>>> kterym
>>>>>>>>>> se
>>>>>>>>>> da karta testovat... Takze jsem ten druhy odkaz ani nezkoumal, jen
>>>>>>>>>> stahnul.
>>>>>>>>>> To byl hezky bastlirsky vikend ;-)
>>>>>>>>>>
>>>>>>>>>> mimochodem, nejake zdrojaky, kde by bylo s kartou pracovano ne v
>>>>>>>>>> SPI
>>>>>>>>>> ale
>>>>>>>>>> v
>>>>>>>>>> SDIO modu bez HW podpory, nemate?
>>>>>>>>>>
>>>>>>>>>> Maly obrazek HW v priloze...
>>>>>>>>>>
>>>>>>>>>> Dne 23. 3. 2013 7:48, Jaroslav Buchta napsal(a):
>>>>>>>>>>
>>>>>>>>>> Diky za odkazy, to vypada super.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Dne 23. 3. 2013 0:55, Zdeněk Aster napsal(a):
>>>>>>>>>>
>>>>>>>>>> Jinak k SD karte funguje na AVR tento software
>>>>>>>>>> http://www.roland-riegel.de/sd-reader/
>>>>>>>>>> A super FAT obsluha je zde
>>>>>>>>>> http://elm-chan.org/fsw/ff/00index_e.html
>>>>>>>>>> jen
>>>>>>>>>> je
>>>>>>>>>> nutne k ni
>>>>>>>>>> dodelat funkce pro cteni treba z SD.
>>>>>>>>>> Jsem se upsal u toho ovladani melo byt oboje treba A10, ale asi to
>>>>>>>>>> bylo
>>>>>>>>>> jasne :-D
>>>>>>>>>>
>>>>>>>>>> Zdenek Aster
>>>>>>>>>>
>>>>>>>>>> ---------- Původní zpráva ----------
>>>>>>>>>> Od: Jaroslav Buchta <jaroslav.buchta na hascomp.cz>
>>>>>>>>>> Datum: 22. 3. 2013
>>>>>>>>>> Předmět: Re: SDRAM - lze nezapojit A12 (spojit s A11) ?
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> No jo, asi tak kdyz uz jsem ozelel dalsich 16MB uzemnenim A12 ;-)
>>>>>>>>>> Je to takovy hobby projekt, ted rozchodim SD kartu a pak zkusim
>>>>>>>>>> portovat
>>>>>>>>>> ten
>>>>>>>>>> ARM amulator. Je to jen hracka ale mozna by to pro demonstracni
>>>>>>>>>> ucely
>>>>>>>>>> mohlo
>>>>>>>>>> mit smysl... A autor si s tim musel dat sakra praci tak uz jen
>>>>>>>>>> proto
>>>>>>>>>> ;-)
>>>>>>>>>>
>>>>>>>>>> Dne 22. 3. 2013 21:21, Zdeněk Aster napsal(a):
>>>>>>>>>>
>>>>>>>>>> No tak pokud by jste měl praxi s osmibitu treba ATARI, tak staci na
>>>>>>>>>> nejaky
>>>>>>>>>> port, si udelat ovladani nejakeho horniho dratu treba nejake A15, a
>>>>>>>>>> tu
>>>>>>>>>> tvrde
>>>>>>>>>> drzet v nule a v procesoru, pak adresujete A10 v jednicce a
>>>>>>>>>> fyzicky
>>>>>>>>>> jste
>>>>>>>>>> dole
>>>>>>>>>> v pameti, No a kdyz to deaktivujete tak mate normalni prostor, jen
>>>>>>>>>> u
>>>>>>>>>> osmibitu pri 64KBytech to melo smysl, kdyz vam 16kB vzala ROMka,
>>>>>>>>>> tady to je zbytecna komplikace....
>>>>>>>>>>
>>>>>>>>>> Zdenek Aster
>>>>>>>>>>
>>>>>>>>>> ---------- Původní zpráva ----------
>>>>>>>>>> Od: Jaroslav Buchta <jaroslav.buchta na hascomp.cz>
>>>>>>>>>> Datum: 22. 3. 2013
>>>>>>>>>> Předmět: Re: SDRAM - lze nezapojit A12 (spojit s A11) ?
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Tak po dennim hrani si FUNGUJE, operace zapsani nebo vycteni
>>>>>>>>>> (kontroly)
>>>>>>>>>> cele pameti 16MB trva cca 15sec, to ujde a jeste asi pujdou zkratit
>>>>>>>>>> nektere casy. Docela hezky broucek ATXMEGA64A1, ze to podporuje ;-)
>>>>>>>>>> Jen takova otazka - na prvnich 12kB co je schovanych pod interni
>>>>>>>>>> oblasti
>>>>>>>>>> (IO, EEPROM, SRAM) se asi nijak nedostanu, co?
>>>>>>>>>> A vecer mam na hrani SD kartu ;-)
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Dne 20. 11. 2012 8:02, Jaroslav Buchta napsal(a):
>>>>>>>>>>> No ja bych to chtel nacpat na tohle
>>>>>>>>>>> http://www.atmel.com/tools/XMEGA-A1XPLAINED.aspx a zprovoznit
>>>>>>>>>>> tohle
>>>>>>>>>>> http://dmitry.co/index.php?p=./04.Thoughts/07.%20Linux%20on%208bit
>>>>>>>>>>> Problem je, ze 8MB co na desce je asi nestaci. Takze radsi
>>>>>>>>>>> propojit,
>>>>>>>>>>> ale IMHO je to jedno. Adresace refresh je stejne autonomni, mode
>>>>>>>>>>> registr nepouziva tyhle vyssi adresy (jsou nulove) a jinak se take
>>>>>>>>>>> snad nepouzivaji. Cili bych mohl adesovat jen pulku radku, jinak
>>>>>>>>>>> by
>>>>>>>>>>> se
>>>>>>>>>>> IMHO nemelo nic stat. Vyzkousime, uvidime ;-)
>>>>>>>>>>>
>>>>>>>>>>> Dne 20.11.2012 7:52, j s napsal(a):
>>>>>>>>>>>> Bol by problem supnut to niekam na zem alebo Vdd? Na doske s
>>>>>>>>>>>> SDRAM
>>>>>>>>>>>> urcite mate poriadny groundplane, zem musi byt vsade :)
>>>>>>>>>>>> Inak by spojenie s A11 nemalo robit problem.
>>>>>>>>>>>>
>>>>>>>>>>>> 2012/11/20 Jaroslav Buchta <jaroslav.buchta na hascomp.cz>:
>>>>>>>>>>>>> Jde mi o pripojeni 32MB pameti ( K4S560432B ) k ATXMEGA A1,
>>>>>>>>>>>>> ktery
>>>>>>>>>>>>> ma jen 12
>>>>>>>>>>>>> adresovych vodicu, pamet 13 pro RAS, CAS se vejde. Nejlepe by to
>>>>>>>>>>>>> slo
>>>>>>>>>>>>> asi
>>>>>>>>>>>>> spojit s pinem A11 ktery je vedle. IMHO se nestane nic jineho,
>>>>>>>>>>>>> nez,
>>>>>>>>>>>>> ze budu
>>>>>>>>>>>>> mit jen 16MB k dispozici, ale treba nekoho napadne nejaky
>>>>>>>>>>>>> zadrhel.
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