Re: How to upgrade flash memory under the control of WinCE?

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From: Mike Markley (mmarkley_online_at_microsoft.com)
Date: 02/27/04 

Date: Fri, 27 Feb 2004 19:24:46 GMT

Lee,

The IPSM is writing to a different memory chip or a different region on the
chip that is not marked as XIP.

Mike Markley
Microsoft Corporation
mmarkley_online@microsoft.com

--------------------
>From: "Lee Ning" <li.ning@advantech.com.cn>
>References: <uPzEwX49DHA.1424@TK2MSFTNGP12.phx.gbl>
<unh7aK59DHA.2184@TK2MSFTNGP09.phx.gbl>
<uX1mlIS#DHA.3292@TK2MSFTNGP11.phx.gbl>
<Ci3IkA9#DHA.1560@cpmsftngxa06.phx.gbl>
>Subject: Re: How to upgrade flash memory under the control of WinCE?
>Date: Thu, 26 Feb 2004 09:20:54 +0800
>Lines: 70
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>Message-ID: <e4cXJbA$DHA.2476@TK2MSFTNGP12.phx.gbl>
>Newsgroups: microsoft.public.windowsce.platbuilder
>NNTP-Posting-Host: 218.241.72.85
>Path: cpmsftngxa06.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTNGP12.phx.gbl
>Xref: cpmsftngxa06.phx.gbl microsoft.public.windowsce.platbuilder:46302
>X-Tomcat-NG: microsoft.public.windowsce.platbuilder
>
>Thank you very much Mike.
>
> But I know Intel IPSM can write to flash memory under XIP image.Do you
>know how IPSM can make it?
>
>Thanks.
>
>"Mike Markley" <mmarkley_online@microsoft.com> wrote in message
>news:Ci3IkA9#DHA.1560@cpmsftngxa06.phx.gbl...
>> Lee,
>>
>> If the Windows CE image is execute in place (XIP) then you cannot write
to
>> the flash memory while the image is running. This is a limitation of the
>> flash memory itself and not of the OS. The only way to update the
>> bootloader if the image is XIP is to have the bootloader update itself
>when
>> the device reboots.
>>
>> Mike Markley
>> Microsoft Corporation
>> mmarkley_online@microsoft.com
>>
>>
>> --------------------
>> >From: "Lee Ning" <li.ning@advantech.com.cn>
>> >References: <uPzEwX49DHA.1424@TK2MSFTNGP12.phx.gbl>
>> <unh7aK59DHA.2184@TK2MSFTNGP09.phx.gbl>
>> >Subject: Re: How to upgrade flash memory under the control of WinCE?
>> >Date: Sun, 22 Feb 2004 16:59:08 +0800
>> >Lines: 20
>> >X-Priority: 3
>> >X-MSMail-Priority: Normal
>> >X-Newsreader: Microsoft Outlook Express 6.00.2720.3000
>> >X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000
>> >Message-ID: <uX1mlIS#DHA.3292@TK2MSFTNGP11.phx.gbl>
>> >Newsgroups: microsoft.public.windowsce.platbuilder
>> >NNTP-Posting-Host: 218.241.72.85
>> >Path:
>>
>cpmsftngxa06.phx.gbl!cpmsftngxa10.phx.gbl!TK2MSFTNGXA05.phx.gbl!TK2MSFTNGP0
8
>> phx.gbl!TK2MSFTNGP11.phx.gbl
>> >Xref: cpmsftngxa06.phx.gbl microsoft.public.windowsce.platbuilder:46106
>> >X-Tomcat-NG: microsoft.public.windowsce.platbuilder
>> >
>> >
>> > Thank you Street_Ken,But how can I let the CE not read data from flash
>> >while I am updating?
>> >Is there a method can do that?
>> >
>> >"street_ken" <street_ken@sina.com> wrote in message
>> >news:unh7aK59DHA.2184@TK2MSFTNGP09.phx.gbl...
>> >> Flash is not ram, you can read directly but you can't write directly.
>> >Write
>> >> need a set of "IO" command, so you need "driver" to do this while not
>> >> mapping memory.
>> >> If you want update flash under CE. You must sure that the CE not read
>> >data
>> >> from flash while you are updating. Because when you update the flash
>the
>> >> chip is in erase or program state, the read can't return the right
>> result.
>> >> So the CE maybe halt.
>> >>
>> >>
>> >
>> >
>> >
>>
>
>
>

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