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[Bug 1000313] unable to execute linux kernel with Redboot
- From: bugzilla-daemon at ecoscentric dot com
- To: ecos-bugs at sources dot redhat dot com
- Date: Fri, 15 Sep 2006 16:13:06 +0100 (BST)
- Subject: [Bug 1000313] unable to execute linux kernel with Redboot
http://bugzilla.ecoscentric.com/show_bug.cgi?id=1000313
------- Additional Comments From msalter@redhat.com 2006-09-15 16:13 -------
You'll need to consult the IXP425 developer's manual for details on
the memory controller, but the configuration bits are fairly simple.
The SDRAM controller is configured as one of the first steps during
a poweron boot. This in done in:
hal/arm/xscale/ixdp425/current/include/hal_platform_setup.h
The code in there is generic and differences in memory hardware
are controlled by #defines in:
hal/arm/xscale/ixdp425/current/include/ixdp425.h
What you'll need to look at are:
SDRAM_SIZE - This must already be set to 32MiB as indicated
by the RedBoot startup banner.
IXP425_SDRAM_CONFIG_INIT - This tells the SDRAM layout (number of banks, etc)
IXP425_SDRAM_REFRESH_CNT - See manual on how to calculate
IXP425_SDRAM_SET_MODE_CMD - See manual for description of mode
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