ColdFire/68K Microcontrollers and ProcessorsのトピックRe: Cannot Write to Flash in program Code Portion of Flash https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Cannot-Write-to-Flash-in-program-Code-Portion-of-Flash/m-p/130301#M739 <HTML><HEAD></HEAD><BODY>Fixed the problem. Change my bootloader to occupy the first 16K of flash instead of 12K.<BR /><BR /><DIV></DIV></BODY></HTML> Fri, 13 Apr 2007 23:16:03 GMT JimMcP 2007-04-13T23:16:03Z Cannot Write to Flash in program Code Portion of Flash https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Cannot-Write-to-Flash-in-program-Code-Portion-of-Flash/m-p/130300#M738 <HTML><HEAD></HEAD><BODY><SPAN>I have a bootloader running in the&nbsp; first 12K&nbsp; (0x00003000) of flash.&nbsp; From&nbsp; flash&nbsp; address&nbsp; 0x00003000&nbsp; and&nbsp; on&nbsp; the program&nbsp; code runs. The bootloader is in its own project.</SPAN><BR /><BR /><SPAN>The bootloader does the flash update process and reboots into the program code. But I cannot write to flash in my Program code. The CFM configuration field seems it has not been initialized in the program code. How can I initialized it..</SPAN><SPAN><SPAN class="msg_source_code"><SPAN class="text_smallest"><BR /><BR />Code:</SPAN></SPAN></SPAN><PRE>// LCF fileMEMORY&nbsp;&nbsp; // Flash starts at 0x00003000... boot loader occupies first 12k of flash{&nbsp;&nbsp;&nbsp;&nbsp; vectorflash (RX) : ORIGIN = 0x00003000,&nbsp; LENGTH = 0x0000040C&nbsp;&nbsp;&nbsp;&nbsp; flashconfig (RX) : ORIGIN = 0X0000340C,&nbsp; LENGTH = 0x00000018&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; flash0 (RX) : ORIGIN = 0x00003424,&nbsp; LENGTH = 0x00000BDC&nbsp;&nbsp;&nbsp; flash (RX) : ORIGIN = 0x00004000,&nbsp; LENGTH = 0x0003EF80&nbsp;&nbsp;&nbsp;&nbsp; params&nbsp; (RX) : ORIGIN = 0x0003FF80,&nbsp; LENGTH = 0x00000080 //128 bytes&nbsp; vectorram (RW) : ORIGIN = 0x20000000,&nbsp; LENGTH = 0x00000400&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ram&nbsp;&nbsp;&nbsp;&nbsp; (RW) : ORIGIN = 0x20000400,&nbsp; LENGTH = 0x00007C00 }SECTIONS {&nbsp;&nbsp;&nbsp; ___IPSBAR&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = 0x40000000;&nbsp;&nbsp;&nbsp; ___SRAM&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = 0x20000000;&nbsp;&nbsp;&nbsp; ___SRAM_SIZE&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = (32 * 1024);&nbsp;&nbsp;&nbsp; ___FLASH&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = ADDR(vectorflash);##&nbsp; ___FLASH_SIZE&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = (255 * 1024) + (7*128);&nbsp;&nbsp;&nbsp; ___FLASH_SIZE&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = (243 * 1024) + (7*128); ___PC_INIT&nbsp;&nbsp; = ADDR(vectorflash) + 0x400;&nbsp;&nbsp;&nbsp; ___RWFLASH&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = ADDR(params);&nbsp;&nbsp;&nbsp; ___RWFLASH_SIZE&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = (1 * 128);&nbsp;&nbsp;&nbsp;&nbsp; ___VECTOR_RAM&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = ___SRAM;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ___FLASH_CONFIG&nbsp;&nbsp;&nbsp;&nbsp; = ADDR(flashconfig);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .vectorflash :&nbsp;&nbsp;&nbsp; {&nbsp;&nbsp;&nbsp;&nbsp; vectors.s (.text)&nbsp;&nbsp;&nbsp;&nbsp; } &gt; vectorflash&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .flashconfig :&nbsp;&nbsp;&nbsp; {&nbsp;&nbsp;&nbsp;&nbsp; flash_config.s (.text)&nbsp;&nbsp;&nbsp;&nbsp; } &gt; flashconfig............................/* * File: flash_config.s */ .global FLASH_CONFIG .global _FLASH_CONFIG&nbsp; .text/* * FLASH configuration */FLASH_CONFIG:_FLASH_CONFIG:.long 0x00000000 .long 0x00000000.long 0x00000000.long 0x00000000.long 0x00000000.long 0x00000000.end</PRE><BR /><SPAN>&nbsp;</SPAN><BR /><BR /><BR /><BR /><BR /><BR /></BODY></HTML> Wed, 11 Apr 2007 22:57:21 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Cannot-Write-to-Flash-in-program-Code-Portion-of-Flash/m-p/130300#M738 JimMcP 2007-04-11T22:57:21Z Re: Cannot Write to Flash in program Code Portion of Flash https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Cannot-Write-to-Flash-in-program-Code-Portion-of-Flash/m-p/130301#M739 <HTML><HEAD></HEAD><BODY>Fixed the problem. Change my bootloader to occupy the first 16K of flash instead of 12K.<BR /><BR /><DIV></DIV></BODY></HTML> Fri, 13 Apr 2007 23:16:03 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Cannot-Write-to-Flash-in-program-Code-Portion-of-Flash/m-p/130301#M739 JimMcP 2007-04-13T23:16:03Z