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TI Home » TI E2E Community » Support Forums » Embedded Software » StarterWare » StarterWare forum » Zoom eXperimeter Kit, Starterware and CCSv4.2::: External RAM program loading problem
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Zoom eXperimeter Kit, Starterware and CCSv4.2::: External RAM program loading problem

Zoom eXperimeter Kit, Starterware and CCSv4.2::: External RAM program loading problem

This question is answered
Yogendra Namjoshi
Posted by Yogendra Namjoshi
on Jan 27 2012 23:32 PM
Prodigy80 points

Hello,


I am using Starterware in CCSv4.2 on ARM9 AM1808 eXperimeter Kit Zoom board. With examples given from LogicPD BSL and Starterware, I am unable to load the built program in external memory 0xC0000000, on the other hand, it works with internal RAM (on-chip RAM starting with address 0x80000000). Since the mapping from LogicPD is consistent with external RAM peripheral memory map, it should had worked. Any suggestions where I might have gone wrong?

Same is true with CCSv5, so I don't think there is any issue with CCS version.

Regards,Yogendra

P.S.

Following doesn't work....

/****************************************************************************/
-stack  0x8000                             /* SOFTWARE STACK SIZE           */
-heap   0x2000                             /* HEAP AREA SIZE                */
-e Entry

/* SPECIFY THE SYSTEM MEMORY MAP */

MEMORY
{
        DDR_MEM        : org = 0xC1080000   len = 0x2F7FFFF     /* RAM */
}

/* SPECIFY THE SECTIONS ALLOCATION INTO MEMORY */

SECTIONS
{
    .init      : {
                 system_config.lib<init.obj> (.text)
               } load > 0xC1080000
              
    .text    : load > DDR_MEM              /* CODE                              */
    .data    : load    > DDR_MEM
    .bss     : load > DDR_MEM              /* GLOBAL & STATIC VARS              */
                    RUN_START(bss_start),
                    RUN_END(bss_end)
    .const   : load > DDR_MEM              /* SOFTWARE SYSTEM STACK             */
    .cinit   : load > DDR_MEM              /* SOFTWARE SYSTEM STACK             */
    .stack   : load > 0xC3FF7FFC           /* SOFTWARE SYSTEM STACK             */

}

Instead this works:

/****************************************************************************/
-stack  0x8000                             /* SOFTWARE STACK SIZE           */
-heap   0x2000                             /* HEAP AREA SIZE                */
-e Entry

/* SPECIFY THE SYSTEM MEMORY MAP */

MEMORY
{
        DDR_MEM        : org = 0x80000000   len = 0x2F7FFFF     /* RAM */
}

/* SPECIFY THE SECTIONS ALLOCATION INTO MEMORY */

SECTIONS
{
    .init      : {
                 system_config.lib<init.obj> (.text)
               } load > 0x80000000 
  

              
    .text    : load > DDR_MEM              /* CODE                              */
    .data    : load    > DDR_MEM
    .bss     : load > DDR_MEM              /* GLOBAL & STATIC VARS              */
                    RUN_START(bss_start),
                    RUN_END(bss_end)
    .const   : load > DDR_MEM              /* SOFTWARE SYSTEM STACK             */
    .cinit   : load > DDR_MEM              /* SOFTWARE SYSTEM STACK             */
    .stack   : load > 0x8001E000     /* SOFTWARE SYSTEM STACK             */

}

StarterWare am1808 External RAM
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All Replies
  • Baskaran Chidambaram
    Posted by Baskaran Chidambaram
    on Jan 30 2012 00:38 AM
    Verified Answer
    Verified by Baskaran Chidambaram
    Expert4385 points

    Is the external memory in AM1808 eXperimeter Kit Zoom board mapped to 0xC0000000. This issue should be related to the DDR not being initialized properly. Have you ran the .gel file for the AM1808 eXperimeter Kit Zoom board?

    StarterWare
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  • Yogendra Namjoshi
    Posted by Yogendra Namjoshi
    on Jan 30 2012 00:55 AM
    Verified Answer
    Verified by Yogendra Namjoshi
    Prodigy80 points

    I missed putting bootlooder initially. Now things work with bootloader first "RAMed" (debug load) and then the actual proect at 0xC0000000. Similarly, I could flash onto SPI Flash and have completed the booting procedure and running of application in power-up

    Thanks

    Yogendra

    StarterWare Bootloader
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