Memory maps, Rebuilding redboot, Overview – Comtrol eCos User Manual

Page 200: Initial installation method

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Chapter 5. Installation and Testing

Memory Maps

This processor has no MMU, so the only memory map is for physical addresses.

Physical Address Range

Description

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

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

0x00000000 - 0x00000fff

On-chip SRAM

0x01000000 - 0x0101ffff

Flash

0x02000000 - 0x0207ffff

RAM

0xffe00000 - 0xffffffff

I/O registers

The flash based RedBoot image occupies virtual addresses 0x01010000 - 0x0101dfff

Rebuilding RedBoot

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

Chapter 3

:

export TARGET=eb40

export ARCH_DIR=arm

export PLATFORM_DIR=at91

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

ARM/ARM7 Cirrus Logic EP7xxx (EDB7211, EDB7212, EDB7312)

Overview

RedBoot supports both serial ports on the board and the ethernet port. The default serial port settings are
38400,8,N,1. RedBoot also supports flash management on the EDB7xxx for the NOR flash only.

The following RedBoot configurations are supported:

Configuration

Mode

Description

File

ROM

[ROM]

RedBoot running from the
board’s flash boot sector.

redboot_ROM.ecm

RAM

[RAM]

RedBoot running from
RAM with RedBoot in the
flash boot sector.

redboot_RAM.ecm

ROMRAM

[ROMRAM]

RedBoot running from
RAM, but contained in the
board’s flash boot sector
(EDB7312 only).

redboot_ROMRAM.ecm

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