From: Josef Angermeier <Josef.Angermeier@informatik.stud.uni-erlangen.de>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] Memory Banks & Flash Mapping
Date: Tue, 14 Feb 2006 08:31:13 +0100 [thread overview]
Message-ID: <20060214073113.GA2319@false> (raw)
Hello u-boot users,
in the README-file you can read this:
- FLASH_BASE0_PRELIM, FLASH_BASE1_PRELIM, CFG_REMAP_OR_AM,
CFG_PRELIM_OR_AM, CFG_OR_TIMING_FLASH, CFG_OR0_REMAP,
CFG_OR0_PRELIM, CFG_BR0_PRELIM, CFG_OR1_REMAP, CFG_OR1_PRELIM,
CFG_BR1_PRELIM:
Memory Controller Definitions: BR0/1 and OR0/1 (FLASH)
So memory bank 1 shouldn't get used for SDRAM, but bank 2 and 3 ?
*_PRELIM is the address before u-boot relocation to RAM, isn't it ?
But *_REMAP after that ?
Whats CFG_FLASH_BASE good for, if i have to configure the memory bank
base register value of my MPC875-board anyway with CFG_BR0_* ?
Further, i am now facing the problem, that my BR1 SDRAM-memory bank gets
changed correctly at u-boot runtime, but the BR0-flash-memory-bank keeps
its PRELIM-value when reaching the command shell.
I now wonder, if i misconfigured my board header file, or if not,
where i shall add the new memory bank reprogramming code for flash space
- in drivers/cfi_flash.c:flash_init() ?
One last question: I am porting u-boot to a not yet very popular
developer board with a MPC875. Shall i add my changes although to your
CVS repository ?
Thanks in advance
Josef
next reply other threads:[~2006-02-14 7:31 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-14 7:31 Josef Angermeier [this message]
2006-02-17 0:12 ` [U-Boot-Users] Memory Banks & Flash Mapping Wolfgang Denk
2006-02-17 9:20 ` Josef Angermeier
2006-02-17 9:49 ` Wolfgang Denk
2006-02-17 11:44 ` Josef Angermeier
2006-02-17 13:52 ` Wolfgang Denk
2006-02-17 20:27 ` Josef Angermeier
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