Re: Eboot question
From: Yannick Chamming's [eMVP] (ychammings_nospam_at_adeset.com)
Date: 12/15/04
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Date: Wed, 15 Dec 2004 15:17:12 +0100
1. This is handled in config.bib file depending on IMGFLASH environment
variable value.
2. NOR Flash can be directly memory-accessed for reading and execution, so
it means that you can jump and execute at an address in NOR. For NAND, you
have to send commands to access datas, so you can't just jump and execute :
you have to copy code in SDRAM prior this. This means that you'll have to
develop a specific FMD layer to handle your image in NAND. MS provides a
model to handle this layer (MSFLASHFMD) and integrate it in both eboot
context (for image loading) and block storage driver (for applicative
access). Look at SMDK2410 BSP : it implements this model
-- ---------------------------------------------------------------- Yannick Chamming's (eMVP) ADESET Windows Embedded Manager ychammings AT adeset DOT com> http://www.adeset.com Tél : +33 (0)4.72.18.57.77 Fax : +33 (0)4.72.18.57.78 ---------------------------------------------------------------- "pth" <pth@discussions.microsoft.com> wrote in message news:D7B55B99-ACD3-48CC-81A5-2144B9F2B2DE@microsoft.com... > 1. When setting "Enable Image For Flash"=1 through hyper termial we will saw > that "jumping to image at physical 0x81000... " and "Enable Image For > Flash"=0 it will jumping to 0xA00B9000(=0), could anyone can explain how to > decide those Virtual address and what it mean? > 2. Because we used NOR flash in our develop board now, if we want to use > NAND flash what steps we need to do and modify?Thanks.
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