Thanks,Ilija but I still have a question. Does it means if I want to write a driver for kwikstik,I MUST write codes included in the redboot,then download redboot into kwikstik to see if the driver can work? Are there some methods to download the image(include the driver's code) into RAM then debug not the Flash, you know the Flash have limited write cycles.
---------------------------------------- > Date: Wed, 20 Jun 2012 13:18:35 +0200 > From: ili...@siva.com.mk > To: tzi...@hotmail.com > CC: ecos-discuss@ecos.sourceware.org > Subject: Re: [ECOS] kinetis kwikstik redboot trouble > > Hi Tangwei > > The SRAM startup is not intended for loading with Redboot, but for JTAG > or alike. You can upload it (the elf file) with J-link. > > Regards > Ilija > > > On 20.06.2012 08:19, tangwei wrote: > > Dear all, Have troubles with Kinetis kwikstik when use redboot RAM startup > > . I am a freshman to eCos,below is the steps about my troubles: > > 1. use the last CVS-eCos build the redboot from the template with no > > changes,and get the redboot.elf;2. use arm-eabi-objcopy to get the > > redboot.bin;3. use the J-link commander to download the redboot.bin in > > kwikstik' flash from address 0x00;4. reset kwikstik,the redboot can startup > > successful. now I want to try the RAM startup for redboot1. same as above's > > step 1, I only change the template's start-up option from ROM startup to > > SRAM startup,get the redboot.elf;2. use arm-eabi-objcopy to get the > > redboot.bin;3. use minicom,after the kwikstik start successful from flash, > > and give the "RedBoot >" as below: RedBoot(tm) bootstrap and debug > > environment [ROM] Non-certified release, version UNKNOWN - built 10:12:01, > > Jun 14 2012 Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, > > 2008, 2009 Free Software Foundation, Inc. RedBoot is free software, covered > > by the eCos license, derived from the GNU General Public License. You are > > welcome to change it and/or distribute copies of it under certain > > conditions. Under the license terms, RedBoot's source code and full license > > terms must have been made available to you. Redboot comes with ABSOLUTELY > > NO WARRANTY. Platform: Freescale KwikStik (Cortex-M4) RAM: > > 0x1fff8000-0x20007000 [0x1fffb6a8-0x20007000 available] RedBoot> > > 4. in the minicom console, input command RedBoot > load -v -m ymodem,and > > then send the file redboot.bin from setp 2, the trouble becomming , it > > can't send the redboot.bin correctly, > > the minicom send file's diaglog is below > > +-----------[ymodem upload - Press CTRL-C to quit]------------+ |Sending: > > redboot.bin | |Ymodem sectors/kbytes sent: 0/ 0kRetry 0: NAK on sector | > > |Ymodem sectors/kbytes sent: 2/ 0kRetry 0: Cancelled | | | |Transfer > > incomplete | | | | READY: press any key to continue... > > |+-------------------------------------------------------------+ > > after press any key,the console gives below: > > RedBoot> load -v -m ymodem CUnrecognized image type: 0x20008000 xyzModem - > > CRC mode, 3(SOH)/0(STX)/0(CAN) packets, 3 retries RedBoot> > > That's all, can anybody please help me? Are there any steps I did above > > were wrong? ThanksOr could anyone give me the right steps to startup > > redboot from RAM? > > > > > > -- > Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos > and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss > -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
