From mboxrd@z Thu Jan  1 00:00:00 1970
From: Wolfgang Wegner <wolfgang@leila.ping.de>
Date: Tue, 19 Jan 2010 14:17:16 +0100
Subject: [U-Boot] Solved: U-Boot (porting) problem on MCF5445x board
In-Reply-To: <20100114165307.GE4092@leila.ping.de>
References: <20100114143353.GC4092@leila.ping.de>
	<20100114161533.GD4092@leila.ping.de>
	<20100114165307.GE4092@leila.ping.de>
Message-ID: <20100119131716.GC23389@leila.ping.de>
List-Id: <u-boot.lists.denx.de>
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To: u-boot@lists.denx.de

Hi list,

sorry for the noise!

The problem turned out to be a simple SDRAM setup problem.
I had set "burst read to read/precharge delay" and "burst write
to read/write/precharge delay" by 1 too low.

Don't know how I messed these values up, but these lead to all
memory accesses in single-step mode and via BDM to work correctly
but gave erroneous results in real program execution.

[note to self: in case of strange errors, always check memory
interface. If triple-checked: check again...]

Sorry again,
Wolfgang

PS: just in case anybody is interested, I am using two pieces of
MT47H32M16HR-3IT on an MCF54455 with this setup:

; SDRAM init
; SDCS0:
mem write 0xFC0B8110 0x40000019
; SDCS1:
mem write 0xFC0B8114 0x44000019
; SDCFG1:
mem write 0xFC0B8008 0x66311720
; SDCFG2:
mem write 0xFC0B800C 0x6A670000
; SDCR (PALL):
mem write 0xFC0B8004 0xE9062002
; SDMR (EMode2):
mem write 0xFC0B8000 0x80010000
; SDMR (EMode3):
mem write 0xFC0B8000 0xC0010000
; SDMR (EMode)
mem write 0xFC0B8000 0x40010412
; SDMR (Mode)
mem write 0xFC0B8000 0x00010333
wait 10
; SDCR:
mem write 0xFC0B8004 0xE9062C02
mem write 0xFC0B8004 0xE9062C04
mem write 0xFC0B8004 0xE9062C04
; SDMR (MODE)
mem write 0xFC0B8000 0x00010233
; SDMR (EMODE, OCD default)
mem write 0xFC0B8000 0x40010792
; SDMR (EMODE, OCD exit)
mem write 0xFC0B8000 0x40010412
; SDCR:
mem write 0xFC0B8004 0x79062C00