Code Confidencebuild

ARM/StrongARM(SA1100) Intel Brutus


RedBoot supports both board serial ports on the Brutus board. The default serial port settings are 38400,8,N,1. flash management is not currently supported.

The following RedBoot configurations are supported:

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

Device programmer is used to program socketed flash parts.

Special RedBoot Commands


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 ROM
0x08000000 - 0x083fffff    Application flash
0x10000000 - 0x100fffff    SRAM
0x18000000 - 0x180fffff    Chip Select 3
0x20000000 - 0x3fffffff    PCMCIA
0x80000000 - 0xbfffffff    SA-1100 Internal Registers
0xc0000000 - 0xc7ffffff    DRAM Bank 0
0xc8000000 - 0xcfffffff    DRAM Bank 1
0xd0000000 - 0xd7ffffff    DRAM Bank 2
0xd8000000 - 0xdfffffff    DRAM Bank 3
0xe0000000 - 0xe7ffffff    Cache Clean

Virtual Address Range    C B  Description
-----------------------  - -  ----------------------------------
0x00000000 - 0x003fffff  Y Y  DRAM Bank 0
0x00400000 - 0x007fffff  Y Y  DRAM Bank 1
0x00800000 - 0x00bfffff  Y Y  DRAM Bank 2
0x00c00000 - 0x00ffffff  Y Y  DRAM Bank 3
0x08000000 - 0x083fffff  Y Y  Application flash
0x10000000 - 0x100fffff  Y N  SRAM
0x20000000 - 0x3fffffff  N N  PCMCIA
0x40000000 - 0x400fffff  Y Y  Boot ROM
0x80000000 - 0xbfffffff  N N  SA-1100 Internal Registers
0xe0000000 - 0xe7ffffff  Y Y  Cache Clean

Platform Resource Usage

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

Rebuilding RedBoot

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

export TARGET=brutus
export ARCH_DIR=arm
export PLATFORM_DIR=sa11x0/brutus

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