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Memory remmaping and RL-ARM

I'm using a LPC2129, with Realview MDK-ARM 3.11 and RealView RL-ARM 3.10

I'm trying to run an application loaded by a user bootloader. So I have a bootloader code in 0x0000 0000 who uses a USB connection to load an application code in 0x0000 4000. The program runs fine. The problem is when I jump to the application code, when I have to remmap the interrupt vectors.

I've tried using REMAP RAM_MODE for Startup.s file in the application, but it seems that the interrupts still go to the Flash Vectors.

Besides, the SWI handler is configured by the OS (RL-ARM) and the Dabt handler by the Real Time Agent

I appreciate any help or useful link

Parents

0 Sarmad AlKhudri over 18 years ago in reply to Rodrigo Martins

the scatter-loading file

LR_IROM1 0x00004000 0x0003C000  {    ; load region size_region
  ER_IROM1 0x00004000 0x0003C000  {  ; load address = execution address
   *.o (RESET, +First)
   *(InRoot$$Sections)
   .ANY (+RO)
  }
  RW_IRAM1 0x40000050 0x00003FB0  {  ; RW data
   .ANY (+RW +ZI)
  }
  RW_IRAM2 0x40000000 0x00000050  {
    Vectors.o
  }
}

LR_IROM2 0x00000000 0x00004000  {
  ER_IROM2 0x00000000 0x00004000  {  ; load address = execution address
    CodeInit.o
  }
}

is it for the bootloader or the application ?

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0 Sarmad AlKhudri over 18 years ago in reply to Rodrigo Martins

the scatter-loading file

LR_IROM1 0x00004000 0x0003C000  {    ; load region size_region
  ER_IROM1 0x00004000 0x0003C000  {  ; load address = execution address
   *.o (RESET, +First)
   *(InRoot$$Sections)
   .ANY (+RO)
  }
  RW_IRAM1 0x40000050 0x00003FB0  {  ; RW data
   .ANY (+RW +ZI)
  }
  RW_IRAM2 0x40000000 0x00000050  {
    Vectors.o
  }
}

LR_IROM2 0x00000000 0x00004000  {
  ER_IROM2 0x00000000 0x00004000  {  ; load address = execution address
    CodeInit.o
  }
}

is it for the bootloader or the application ?

Children

0 Sarmad AlKhudri over 18 years ago in reply to Sarmad AlKhudri

Ok I guess the scatter file is for the application
actually you are loading only the application in your target and you start with a jump to address 0x4000 in CodeInit.s which simulate the bootloader

can you please show us the files
Startup.s
Vectors.s

because it doesnot work for me ?
did you use REMAP RAM_MODE ?

thank you
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0 Rodrigo Martins over 18 years ago in reply to Sarmad AlKhudri

The Vectors.s is part of the original Startup.s which is separated to run on RAM

; Area Definition and Entry Point
;  Startup Code must be linked first at Address at which it expects to run.

                                AREA    RAMVECT, CODE, READONLY
; Exception Vectors
;  Mapped to Address 0.
;  Absolute addressing mode must be used.
;  Dummy Handlers are implemented as infinite loops which can be modified.

Vectors         LDR     PC, Reset_Addr
                LDR     PC, Undef_Addr
                LDR     PC, SWI_Addr
                LDR     PC, PAbt_Addr
                LDR     PC, DAbt_Addr
                NOP                            ; Reserved Vector
                ;LDR     PC, IRQ_Addr
                LDR     PC, [PC, #-0x0FF0]     ; Vector from VicVectAddr
                LDR     PC, FIQ_Addr


Reset_Addr      DCD     Reset_Handler
Undef_Addr      DCD     Undef_Handler
SWI_Addr        DCD     SWI_Handler
PAbt_Addr       DCD     PAbt_Handler
DAbt_Addr       DCD     DAbt_Handler
                DCD     0                      ; Reserved Address
IRQ_Addr        DCD     IRQ_Handler
FIQ_Addr        DCD     FIQ_Handler

                                IMPORT SWI_Handler
                                IMPORT DAbt_Handler
                                IMPORT Reset_Handler
                                IMPORT Undef_Handler
                                IMPORT PAbt_Handler
                                IMPORT IRQ_Handler
                                IMPORT FIQ_Handler
                                END

The startup is almost the same, just without this part of the code.

To use the Scatter-File you have to deselect "Use Memory Layout from Target Dialog" from Linker options