which address of FLASH should at91sam7s redboot burn to ?
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which address of FLASH should at91sam7s redboot burn to ?
by wb ning
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hello, everyone, i downloaded the Prebuilt RedBoot binaries for Atmel
AT91SAM7S. But After i burn the redboot_rom.bin into at91sam7s256's flash at address 0x100000, it can't startup when power on. The datasheet said 0x100000 is the beginning address of Flash. So i burn it there. I use the readelf command to find the redboot_rom.elf say its entry point is 0x100040, But when i burn redboot_rom.bin there, it can't startup either. Can you tell me where should i burn the redboot_rom.bin, since the redboot_rom.elf is too large to burn. Thanks. -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss |
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Re: which address of FLASH should at91sam7s redboot burn to ?
by jasonlee
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Typically ROM startup is used for building RedBoot.
make sure you startup is ROM.
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Re: which address of FLASH should at91sam7s redboot burn to ?
by Robert Brusa
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On Fri, 19 Jun 2009 10:34:16 +0200, wrote:
> On Fri, 19 Jun 2009 07:49:46 +0200, jasonlee <famudingding2008@...> > wrote: > >> >> Typically ROM startup is used for building RedBoot. >> make sure you startup is ROM. >> >> wb ning wrote: >>> >>> hello, everyone, i downloaded the Prebuilt RedBoot binaries for Atmel >>> AT91SAM7S. But After i burn the redboot_rom.bin into at91sam7s256's >>> flash at address 0x100000, it can't startup when power on. The >>> datasheet said 0x100000 is the beginning address of Flash. So i burn >>> it there. I use the readelf command to find the redboot_rom.elf say >>> its entry point is 0x100040, But when i burn redboot_rom.bin there, it >>> can't startup either. Can you tell me where should i burn the >>> redboot_rom.bin, since the redboot_rom.elf is too large to burn. >>> Thanks. >>> >>> -- >>> Before posting, please read the FAQ: >>> http://ecos.sourceware.org/fom/ecos >>> and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss >>> >>> >>> other problem. Currently I see two possible areas of problems: a) You write "prebuilt redboot" - please check, as adviced by Jason that indeed your redboot was built for "startup ROM" b) Then you write "...burn the redboot_rom.bin ...elf is too large to burn" What do mean with this statement? The code in the elf-file is the same as in a bin-file - except that the elf-file contains a lot of other (debug) information. But that does not go into the target. Regards Robert -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss |
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Re: which address of FLASH should at91sam7s redboot burn to ?
by wb ning
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The prebuilt redboot startup is ROM, because the filename is
redboot_rom.bin. Thank you for getting me know my misunderstanding about the elf file, I always think the all the file data will be burn into flash until you tell me the truth. Maybe i should learn the startup process of the ecos, then to find out why my redboot can startup. 2009/6/19 Robert Brusa <bob.brusa@...>: > On Fri, 19 Jun 2009 10:34:16 +0200, wrote: > >> On Fri, 19 Jun 2009 07:49:46 +0200, jasonlee <famudingding2008@...> >> wrote: >> >>> >>> Typically ROM startup is used for building RedBoot. >>> make sure you startup is ROM. >>> >>> wb ning wrote: >>>> >>>> hello, everyone, i downloaded the Prebuilt RedBoot binaries for Atmel >>>> AT91SAM7S. But After i burn the redboot_rom.bin into at91sam7s256's >>>> flash at address 0x100000, it can't startup when power on. The >>>> datasheet said 0x100000 is the beginning address of Flash. So i burn >>>> it there. I use the readelf command to find the redboot_rom.elf say >>>> its entry point is 0x100040, But when i burn redboot_rom.bin there, it >>>> can't startup either. Can you tell me where should i burn the >>>> redboot_rom.bin, since the redboot_rom.elf is too large to burn. >>>> Thanks. >>>> >>>> -- >>>> Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos >>>> and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss >>>> >>>> >>>> > 0x100000 is ok and it should work. The fact that it does not hints at an > other problem. Currently I see two possible areas of problems: > > a) You write "prebuilt redboot" - please check, as adviced by Jason that > indeed your redboot was built for "startup ROM" > > b) Then you write "...burn the redboot_rom.bin ...elf is too large to burn" > What do mean with this statement? The code in the elf-file is the same as in > a bin-file - except that the elf-file contains a lot of other (debug) > information. But that does not go into the target. > Regards Robert > > > > -- > 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 |
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