Subversion Repositories openrisc_2011-10-31

;

;  $Id: romlink,v 1.2 2001-09-27 11:59:42 chris Exp $

;

;#{

;# SCCS INFORMATION:

;# SID          = @(#)sa29200.lnk       4.1;    DLU=95/09/14-11:05:57

;# Q            = @(#)  Copyright (C) 1995 Advanced Micro Devices, Inc.

;# Module Type  = @(#)  OSBOOT/DBG_CORE absolute liker file (AMD-EPD-29K, AMIR)

;# SCCS Path    = %P\%

;# SCCS File    = %F\%

;# FileName     = sa29200.lnk

;# SCCS ID      = 4.1

;# Date Update  = 14 Sep 1995, (DLU=95/09/14-11:05:57)

;# Date Extract = 12 Oct 1995, (DLE=95/10/12-16:27:31)

;#}

; @(#)sa29200.lnk       3.6 94/08/22 11:58:54, Srini, AMD.

; This is the linker command file used to bind the inrementally linked

; osboot.o module to a memory map. This also defines some link-time constants

; used in the code. These constants are genral for all 29K family members.

; You only need to customize, if necessary, the definitions that affect

; your target processor, and leave the rest alone.

; The default values in this file are for binding osboot.o for use with

; SA29200 stand-alone board with the -29200/-29205 option.

;

; Order the code segments according to the memory map structure.

; The defaul OSBOOT has only .text and .bss sections. You need to ORDER

; other sections of your applications that are not included below.

; We use separate ORDER statements below to distinguish the two memory

; regions used. The text section is bound to ROM memory region, and the

; data region to RAM memory space.

; MAKE SURE to order the BSS section at the very end. This is because the

; BSS section size could get adjusted after linking with raminit.o (produced

; by romcoff utility) or other initialization routines. This change in size

; could affect the offsets used by the program to refer to the remaining data

; sections that follow BSS.

ALIGN   ProcInit=16

ORDER   Reset=0x0

ORDER   ProcInit,OsbText,.text,!text

ORDER   .lit,!lit

ORDER   vectable=0x40000000

ORDER   msg_data=0x40000400

ORDER   .data,!data

ORDER   OsbBss,dbg_030,dbg_bss,cfg_bss,.bss,!bss

ORDER   HeapBase

ORDER   .comment

; For Stand-Alone application out of ROM use the ORDER statements below:

; For Stand-Alone application out of RAM use the ORDER statement below:

;ORDER  Reset=0x40010000,ProcInit,OsbText,.text,!text,.lit,!lit,.data,!data,msg_data,dbg_dat,.bss,!bss,HeapBase,.comment

;

; definitions of link time constants used in code.

;

; Definition of the initial value of CPS register.

; The value below is for an Am29200 processor. It sets TU, SM,DI, DA,IM fields

; bits in the register. You may modify it to suit your target environment.

; Like, changing the IM field for instance. IM is 0x11 by default enabling

; all INTR[0-3] lines.

;public _init_CPS=0x87F

public  _init_CPS=0x20813

;public  _init_CPS=0x2081F

;public  _init_CPS=0x081F

; Define the memory map in general values. The code - except for simulators -

; configures the external RAM at run-time and updates the DMemSize value.

; DMemStart and DMemSize are the most important values below. DMemStart is

; used to initialize the vector base address register (VAB). And DMemSize

; is used to find the highest addressable data memory to place the register

; and memory stacks. Remember, DMemSize is configured at run-time for hardware

; targets and updated.

public  VectorBaseAddress=0x40000000

public  IMemStart=0x0000000

public  IMemSize=0xfffff

public  DMemStart=0x40000000

#public DMemStart=0x100000

public  DMemSize=0xfffff

#public DMemSize=0x17ffff

#public DMemSize=0x3fffffff

public  RMemStart=0x0

public  RMemSize=0xfffff

public  EnableDRAMSizing=1

;

; For the 29K Microcontrollers, you need to define the ROM Control register

; value (RMCT_VALUE), the ROM Configuration register value (RMCF_VALUE), and

; the DRAM Control register value (DRCT_VALUE) based on DMemSize specified

; above. This could be overwritten in software targets such as the simulator.

; ROM and RAM Control registers. ROM COnfiguration. (not valid for Am2900X,

; Am29050, and Am2903X processors)

; The DRAM REFRATE value (in DRCT) must be specified here. To disable

; DRAM refreshing (on a system with no DRAM), set REFRATE field in DRCT

; to zero. Otherwise, set it to the desired frequency. The default is 0xFF

; The default values in this file are for Am2920X processors.

;public RMCT_VALUE=0x03030303

;public DRCT_VALUE=0x888800FF

;public RMCF_VALUE=0x00f8f8f8

;

public  RMCT_VALUE=0x4a424300

public  DRCT_VALUE=0xccc000f0

public  RMCF_VALUE=0x011121ff

;

;

; Execute trap handlers from ROM? If your trap handlers are in ROM space,

; then set _TRAPINROM to TWO (0x2). It is used to modify the tarp vector

; address installed to set the R bit when fetched. If the trap handlers in

; ROM or if there is no ROM-space (no RE bit in CPS), set _TRAPINROM to ZERO.

; The default in this file is for SA29200 board and _TRAPINROM is set to ZERO.

public  _TRAPINROM=0

;

; Define the processor clock frequencies. These values are used by the HIF

; kernel to provide some HIF services.

public  TicksPerMillisecond=16000

public  ClockFrequency=16000000

;

; There are some C functions which are not leaf functions. However, they are

; no expected to spill or fill registers. We ensure that by setting up a

; pseudo register stack before calling those functions. The code generated

; for those functions however do have the prologue and epilogue which refer

; to the symbols V_SPILL and V_FILL. The linker does not know about these

; symbols. So we define it here so that it does not complain.

; If you use the hc29 compiler driver to link the objects it will warn that

; the definitions here are already internally defined. You

; can use hc29 with -nocrt0 option to do the linking for linear memory spaces.

; public        V_SPILL=64

; public        V_FILL=65

;

; Set the UART debug/monitor port serial communications baud rate.

;

public UCLK=32000000

; INITBAUD defines the cold start baud rate. This is the baud rate

; the monitor would use when powered up. This can be overridden by

; defining BAUDRATE on the assembler/compiler command line.

public INITBAUD=9600

;

; Is there a SCC 8530 on the target?

; If there is an 8530 SC on target, define the symbols below appropriately.

; The routines in scc8530.s use these values to access the registers of

; SCC and program it. The default values are for EZ030 target.

; Baudrate can be specified on the command-line to override the default

; baud rate defined in scc8530.s.

; scc channel A control

;public SCC8530_CHA_CONTROL=0xC0000007

; scc channel B control

;public SCC8530_CHB_CONTROL=0xC0000003

; scc channel A data

;public SCC8530_CHA_DATA=0xC000000F

; scc channel B data

;public SCC8530_CHB_DATA=0xC000000B

; scc baud clock generator

;public SCC8530_BAUD_CLK_ENBL=3