Memory maps, Rebuilding redboot, Arm/strongarm(sa110) intel ebsa 285 – Comtrol eCos User Manual

Page 208: Overview

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Chapter 5. Installation and Testing

Memory Maps

The MMU page tables are located at 0x4000.

NOTE: The virtual memory maps in this section use a C and B column to indicate whether or not the region is
cached (C) or buffered (B).

Physical Address Range

Description

-----------------------

----------------------------------

0x00000000 - 0x07ffffff

SDRAM

0x08000000 - 0x0805ffff

On-chip SRAM

0x40000000 - 0x40ffffff

Flash

0x7fffc000 - 0x7fffffff

I/O registers

0x80000000 - 0x8001ffff

PLD

Virtual Address Range

C B

Description

-----------------------

- -

----------------------------------

0x00000000 - 0x07ffffff

Y Y

SDRAM

0x08000000 - 0x0805ffff

Y Y

On-chip SRAM

0x40000000 - 0x403fffff

N Y

Flash

0x7fffc000 - 0x7fffffff

N N

I/O registers

0x80000000 - 0x8001ffff

N N

PLD

Rebuilding RedBoot

These shell variables provide the platform-specific information needed for building RedBoot according to the
procedure described in

Chapter 3

:

export TARGET=excalibur_arm9

export ARCH_DIR=arm

export PLATFORM_DIR=arm9/excalibur

The names of configuration files are listed above with the description of the associated modes.

ARM/StrongARM(SA110) Intel EBSA 285

Overview

RedBoot uses the single EBSA-285 serial port. The default serial port settings are 38400,8,N,1. If the EBSA-285
is used as a host on a PCI backplane, ethernet is supported using an Intel PRO/100+ ethernet adapter. Management
of onboard flash is also supported.

The following RedBoot configurations are supported:

104

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