Other Parts Discussed in Thread: C2000WARE
Dear C2000 champs,
I'm trying to use flash api to realize a custimized bootloader for F28035, but I have gotten in a trouble that the flash erase will be failed after device is reset, can you share your advice about this?
Here are the informations:
1. If using JTAG to program .out file into device and won't reset device this time, the erase and write to flash could works correctly.
2. If the device was reset, then the erase feature will be failed, the first fail address is always 0x003F0000, please see below picture.
3. The first input parameter in Flash_Erase function is 0xFE, that means the all flash sectors, except sector A, will be erased.
4. The retured value of Flash_Erase is 0x15.
5. The flash api has been copied from pflash to RAM at the begining of main, and runs in RAM. The function pointer(Flash2803x_Erase) is in ram location.
6. Here are my CMD file.
/*
// TI File $Revision: /main/4 $
// Checkin $Date: November 9, 2009 15:09:12 $
//###########################################################################
//
// FILE: F2808.cmd
//
// TITLE: Linker Command File For F2808 Device
//
//###########################################################################
// $TI Release: 2803x C/C++ Header Files and Peripheral Examples V1.24 $
// $Release Date: January 11, 2011 $
// $Copyright:
// Copyright (C) 2009-2021 Texas Instruments Incorporated - http://www.ti.com/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the
// distribution.
//
// Neither the name of Texas Instruments Incorporated nor the names of
// its contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// $
//###########################################################################
*/
/* ======================================================
// For Code Composer Studio V2.2 and later
// ---------------------------------------
// In addition to this memory linker command file,
// add the header linker command file directly to the project.
// The header linker command file is required to link the
// peripheral structures to the proper locations within
// the memory map.
//
// The header linker files are found in <base>\DSP2803x_Headers\cmd
//
// For BIOS applications add: DSP2803x_Headers_BIOS.cmd
// For nonBIOS applications add: DSP2803x_Headers_nonBIOS.cmd
========================================================= */
/* ======================================================
// For Code Composer Studio prior to V2.2
// --------------------------------------
// 1) Use one of the following -l statements to include the
// header linker command file in the project. The header linker
// file is required to link the peripheral structures to the proper
// locations within the memory map */
/* Uncomment this line to include file only for non-BIOS applications */
/* -l DSP2803x_Headers_nonBIOS.cmd */
/* Uncomment this line to include file only for BIOS applications */
/* -l DSP2803x_Headers_BIOS.cmd */
/* 2) In your project add the path to <base>\DSP2803x_headers\cmd to the
library search path under project->build options, linker tab,
library search path (-i).
/*========================================================= */
/* Define the memory block start/length for the F28035
PAGE 0 will be used to organize program sections
PAGE 1 will be used to organize data sections
Notes:
Memory blocks on F2803x are uniform (ie same
physical memory) in both PAGE 0 and PAGE 1.
That is the same memory region should not be
defined for both PAGE 0 and PAGE 1.
Doing so will result in corruption of program
and/or data.
L0 memory block is mirrored - that is
it can be accessed in high memory or low memory.
For simplicity only one instance is used in this
linker file.
Contiguous SARAM memory blocks or flash sectors can be
be combined if required to create a larger memory block.
*/
MEMORY
{
PAGE 0: /* Program Memory */
/* Memory (RAM/FLASH/OTP) blocks can be moved to PAGE1 for data allocation */
RAML0 : origin = 0x008000, length = 0x000800 /* on-chip RAM block L0 */
RAML1 : origin = 0x008800, length = 0x000400 /* on-chip RAM block L1 */
RAML3 : origin = 0x009000, length = 0x001000 /* on-chip RAM block L3 */
OTP : origin = 0x3D7800, length = 0x000400 /* on-chip OTP */
FLASHB : origin = 0x3F4000, length = 0x002000 /* on-chip FLASH */
FLASHA : origin = 0x3F6000, length = 0x001D80 /* on-chip FLASH */
FLASHAx : origin = 0x3F7D80, length = 0x000200 /* on-chip FLASH */
CSM_RSVD : origin = 0x3F7F80, length = 0x000076 /* Part of FLASHA. Program with all 0x0000 when CSM is in use. */
BEGIN : origin = 0x3F7FF6, length = 0x000002 /* Part of FLASHA. Used for "boot to Flash" bootloader mode. */
CSM_PWL_P0 : origin = 0x3F7FF8, length = 0x000008 /* Part of FLASHA. CSM password locations in FLASHA */
IQTABLES : origin = 0x3FE000, length = 0x000B50 /* IQ Math Tables in Boot ROM */
IQTABLES2 : origin = 0x3FEB50, length = 0x00008C /* IQ Math Tables in Boot ROM */
IQTABLES3 : origin = 0x3FEBDC, length = 0x0000AA /* IQ Math Tables in Boot ROM */
ROM : origin = 0x3FF27C, length = 0x000D44 /* Boot ROM */
RESET : origin = 0x3FFFC0, length = 0x000002 /* part of boot ROM */
VECTORS : origin = 0x3FFFC2, length = 0x00003E /* part of boot ROM */
PAGE 1 : /* Data Memory */
/* Memory (RAM/FLASH/OTP) blocks can be moved to PAGE0 for program allocation */
/* Registers remain on PAGE1 */
BOOT_RSVD : origin = 0x000000, length = 0x000050 /* Part of M0, BOOT rom will use this for stack */
RAMM0 : origin = 0x000050, length = 0x0003B0 /* on-chip RAM block M0 */
RAMM1 : origin = 0x000400, length = 0x000400 /* on-chip RAM block M1 */
RAML2 : origin = 0x008C00, length = 0x000400 /* on-chip RAM block L2 */
}
/* Allocate sections to memory blocks.
Note:
codestart user defined section in DSP28_CodeStartBranch.asm used to redirect code
execution when booting to flash
ramfuncs user defined section to store functions that will be copied from Flash into RAM
*/
SECTIONS
{
/* Allocate program areas: */
.cinit : > FLASHA PAGE = 0
.pinit : > FLASHA, PAGE = 0
.text : > FLASHA PAGE = 0
.specific : > FLASHB PAGE = 0
codestart : > BEGIN PAGE = 0
ramfuncs : LOAD = FLASHA,
RUN = RAML0,
LOAD_START(_RamfuncsLoadStart),
LOAD_SIZE(_RamfuncsLoadSize),
RUN_START(_RamfuncsRunStart),
PAGE = 0
csmpasswds : > CSM_PWL_P0 PAGE = 0
csm_rsvd : > CSM_RSVD PAGE = 0
.erasefunc : > FLASHAx PAGE = 0
/* Allocate program areas: */
/* The Flash API functions can be grouped together as shown below.
The defined symbols _Flash28_API_LoadStart, _Flash28_API_LoadEnd
and _Flash28_API_RunStart are used to copy the API functions out
of flash memory and into SARAM */
Flash28_API:
{
-lFlash2803x_API_V100.lib(.econst)
-lFlash2803x_API_V100.lib(.text)
}LOAD = FLASHA,
RUN = RAML3,
LOAD_START(_Flash28_API_LoadStart),
LOAD_END(_Flash28_API_LoadEnd),
LOAD_SIZE(_Flash28_API_LoadSize),
RUN_START(_Flash28_API_RunStart),
PAGE = 0
/* Allocate uninitalized data sections: */
.stack : > RAMM0 PAGE = 1
.ebss : > RAML2 PAGE = 1
.esysmem : > RAML2 PAGE = 1
/* Initalized sections go in Flash */
/* For SDFlash to program these, they must be allocated to page 0 */
.econst : > FLASHA PAGE = 0
.switch : > FLASHA PAGE = 0
/* Allocate IQ math areas: */
IQmath : > FLASHA PAGE = 0 /* Math Code */
IQmathTables : > IQTABLES, PAGE = 0, TYPE = NOLOAD
/* Uncomment the section below if calling the IQNexp() or IQexp()
functions from the IQMath.lib library in order to utilize the
relevant IQ Math table in Boot ROM (This saves space and Boot ROM
is 1 wait-state). If this section is not uncommented, IQmathTables2
will be loaded into other memory (SARAM, Flash, etc.) and will take
up space, but 0 wait-state is possible.
*/
/*
IQmathTables2 : > IQTABLES2, PAGE = 0, TYPE = NOLOAD
{
IQmath.lib<IQNexpTable.obj> (IQmathTablesRam)
}
*/
/* Uncomment the section below if calling the IQNasin() or IQasin()
functions from the IQMath.lib library in order to utilize the
relevant IQ Math table in Boot ROM (This saves space and Boot ROM
is 1 wait-state). If this section is not uncommented, IQmathTables2
will be loaded into other memory (SARAM, Flash, etc.) and will take
up space, but 0 wait-state is possible.
*/
/*
IQmathTables3 : > IQTABLES3, PAGE = 0, TYPE = NOLOAD
{
IQmath.lib<IQNasinTable.obj> (IQmathTablesRam)
}
*/
/* .reset is a standard section used by the compiler. It contains the */
/* the address of the start of _c_int00 for C Code. /*
/* When using the boot ROM this section and the CPU vector */
/* table is not needed. Thus the default type is set here to */
/* DSECT */
.reset : > RESET, PAGE = 0, TYPE = DSECT
vectors : > VECTORS PAGE = 0, TYPE = DSECT
}
/*
//===========================================================================
// End of file.
//===========================================================================
*/
7. My initialiation code that copy flash to ram
/*
* Copy time critical code and Flash setup code to RAM
* This includes the following ISR functions: epwm1_timer_isr(),
* epwm2_timer_isr(), epwm3_timer_isr and and InitFlash();
* The RamfuncsLoadStart, RamfuncsLoadEnd, and RamfuncsRunStart
* symbols are created by the linker.
*/
memcpy((uint16_t *)&RamfuncsRunStart,(uint16_t *)&RamfuncsLoadStart,
(unsigned long)&RamfuncsLoadSize);
memcpy((uint16_t *)&Flash28_API_RunStart, (uint16_t *)&Flash28_API_LoadStart,
(unsigned long) &Flash28_API_LoadSize);
/*
* Call Flash Initialization to setup flash waitstates
* This function must reside in RAM
*/
InitFlash();
Regards,
Jack
