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Hi John, We tried modifying the .ldi file as per your suggestion. However we are getting the same error. Please find herewith output file for reference. Regards, Himanshu Patel -----Original Message----- From: John Dallaway [mailto:john@dallaway.org.uk] Sent: Friday, April 03, 2009 12:47 PM To: Himanshu Patel Cc: eCos Discuss Subject: Re: Problem with memory layout (.ldi file) Hi Himanshu Himanshu Patel wrote: > We are porting eCos onto board with LPC2458 processor. The board has > segmented RAM memory speared across 32-bit address space. > > Segment 1: start address 0x40000000, Length = 0xFFE0 > Segment 2: Start address 0x7FE00000, Length = 0x4000 > > We want to have .bss section mapped in section (Segment 1) and data and > heap to be mapped in section(Segment 2). We tried to modify the .ldi and > .h file. However we are getting error (heap.cxx: invalid operands of > type "int" and "char" to binary operator). A copy of the precise error message in context would help. > SECTION_bss (sram, 0x40000540, FOLLOWING(.fixed_vectors)) The .bss section is not relocated from ROM, so the third parameter should be LMA_EQ_VMA in the above line. > .h file: > #define CYGMEM_REGION_sram (0x40000000) > #define CYGMEM_REGION_sram_SIZE (0x0000FFE0) > #define CYGMEM_REGION_sram_ATTR (CYGMEM_REGION_ATTR_R | CYGMEM_REGION_ATTR_W) You should add similar definitions to the .h file for memory region sram2. I hope this helps John Dallaway
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