RedBoot User's Guide
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# SuperH/SH3(SH7708) Hitachi EDK7708

## Overview

RedBoot uses the serial port. The default serial port settings are 38400,8,N,1.

Management of onboard flash is also supported.

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

## Initial Installation Method

Program the ROM RedBoot image into flash using an eprom programmer.

## Memory Maps

RedBoot sets up the following memory map on the EDK7708 board.

    Physical Address Range  Description
    ----------------------- -----------
    0x80000000 - 0x8001ffff Flash (AT29LV1024)
    0x88000000 - 0x881fffff DRAM
    0xa4000000 - 0xa40000ff LED ON
    0xb8000000 - 0xb80000ff LED ON

## Rebuilding RedBoot

These shell variables provide the platform-specific information needed for building RedBoot according to the procedure described in Chapter 3:

    export TARGET=edk7708
    export ARCH_DIR=sh
    export PLATFORM_DIR=edk7708

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

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