Intel SA1100 Multimedia Board

Overview

RedBoot supports both board serial ports. The default serial port settings are 38400,8,N,1. flash management is also supported. Two basic RedBoot configurations are supported: n

Initial Installation Method

A device programmer is used to program socketed flash parts.

Special RedBoot Commands

None.

Memory Maps

The first level page table is located at physical address 0xc0004000. No second level tables are used.

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 - 0x000fffff    Boot flash 
0x08000000 - 0x083fffff    Application flash 
0x10000000 - 0x107fffff    SA-1101 Board Registers 
0x18000000 - 0x180fffff    Ct8020 DSP 
0x18400000 - 0x184fffff    XBusReg 
0x18800000 - 0x188fffff    SysRegA 
0x18c00000 - 0x18cfffff    SysRegB 
0x19000000 - 0x193fffff    Spare CPLD A 
0x19400000 - 0x197fffff    Spare CPLD B 
0x20000000 - 0x3fffffff    PCMCIA 
0x80000000 - 0xbfffffff    SA1100 Internal Registers 
0xc0000000 - 0xc07fffff    DRAM Bank 0 
0xe0000000 - 0xe7ffffff    Cache Clean  
Virtual Address Range    C B  Description 


-----------------------  - -  ---------------------------------- 
0x00000000 - 0x007fffff  Y Y  DRAM Bank 0 
0x08000000 - 0x083fffff  Y Y  Application flash 
0x10000000 - 0x100fffff  N N  SA-1101 Registers 
0x18000000 - 0x180fffff  N N  Ct8020 DSP 
0x18400000 - 0x184fffff  N N  XBusReg 
0x18800000 - 0x188fffff  N N  SysRegA 
0x18c00000 - 0x18cfffff  N N  SysRegB 
0x19000000 - 0x193fffff  N N  Spare CPLD A 
0x19400000 - 0x197fffff  N N  Spare CPLD B 
0x20000000 - 0x3fffffff  N N  PCMCIA 
0x50000000 - 0x500fffff  Y Y  Boot flash 
0x80000000 - 0xbfffffff  N N  SA1100 Internal Registers 
0xc0000000 - 0xc07fffff  N Y  DRAM Bank 0 
0xe0000000 - 0xe7ffffff  Y Y  Cache Clean

Resource Usage

The flash based RedBoot image occupies virtual addresses 0x50000000 - 0x5000ffff. The RAM based RedBoot image occupies virtual addresses 0x10000 - 0x2ffff. RAM addresses from 0x30000 to the end of RAM are available for general use such as a temporary scratchpad for downloaded images before they are written to flash.

The SA11x0 OS timer is used as a polled timer to provide timeout support for XModem file transfers.

Rebuilding RedBoot

The instructions in Chapter 3 should be followed. The values for TARGET, ARCH_DIR and PLATFORM_DIR on this platform are “sa1100mm”, “arm” and “sa11x0/sa1100mm” respectively. Note that the configuration export files supplied in the hal/arm/sa11x0/sa1100mm/VERSION/misc directory in the RedBoot source tree should be used.