EVMOMAP-L137 flash boot problem

Dear all,

I'm trying to boot the EVMOMAP-L137 from the SPI flash memory.

I have follow the steps in here: processors.wiki.ti.com/.../Boot_Images_for_OMAP-L137

There is a sample code that implements a blinker: the DSP enable the ARM, then the ARM turns on and off some leds in the board.

Now my problem: I added a few lines to the DSP code in order to control the UART. The code is presented as follows:

#include "device.h"
#include "evmomapl137_uart.h"

#define KICK0Ra             *(unsigned int*)(SYS_BASE + 0x038)
#define KICK1Ra             *(unsigned int*)(SYS_BASE + 0x03c)

void main(void)
{
    UART_Handle uart0;
    // Open Permissions to SYSCFG Registers (Not required for PG2.0 silicon and above)
    KICK0Ra = 0x83e70b13;
    KICK1Ra = 0x95A4F1E0;

    DEVICE_enable_ARM();

    uart0 = EVMOMAPL137_UART_open( 2, 1248 ); // This work for baud=9600. baud*24000000*13/(16*150000000)

    while(1){
        while( EVMOMAPL137_UART_xmtReady( uart0 ) );  // Wait for uart_tx ready
        EVMOMAPL137_UART_putChar( uart0, 'A' );    // Write 1 byte
    }
}

So, I just enable the ARM, then I send continuously 'A' through the serial port. When I lunch the project from ccs3.3 everything works ok: I see the leds blinking and receive continuously 'A' in my PC.

However, when the code is downloaded to the SPI flash, and the OMAP-L137 boots from it, I can see the leds blinking, but I don't receive anything in my PC (nothing comes out from the UART, I checked it with an oscilloscope).

This is the DSP linker.cmd file (I have just added the path to evmomapl137bsl.lib with respect to the original file):

-lrts64plus.lib
-l C:\CCStudio_v3.3\boards\evmomapl137_v1\dsp\lib\evmomapl137bsl.lib

-stack          0x00001000 /* Stack Size */ 

MEMORY
{
    L2RAM        org=0x80010000 len=0x00010000 /* L2 RAM/Cache */
}

SECTIONS
{
    .text       > L2RAM
    .const      > L2RAM
    .bss        > L2RAM
    .far        > L2RAM
    .switch        > L2RAM
    .stack      > L2RAM
    .data       > L2RAM
    .cinit        > L2RAM
    .sysmem        > L2RAM
    .cio        > L2RAM
}

This is the ARM linker.cmd file:

/*
 *  Linker command file
 *
 */
-
-stack           0x00000800      /* Stack Size */
-heap            0x00000800      /* Heap Size */


MEMORY
{
    ARMRAM:      o = 0xFFFF0000  l = 0x00002000
    DSPRAM:      o = 0x11800000  l = 0x00040000
    SHAREDRAM:   o = 0x80000000  l = 0x00020000
    SDRAM:       o = 0xC0000000  l = 0x20000000
}

SECTIONS
{
    .bss        >   SHAREDRAM
    .cinit      >   SHAREDRAM
    .cio        >   SHAREDRAM
    .const      >   SHAREDRAM
    .stack      >   SHAREDRAM
    .sysmem     >   SHAREDRAM
    .text       >   SHAREDRAM
    .switch     >   SHAREDRAM
    .far        >   SHAREDRAM
    .test_buf    >    SDRAM
}

Does anybody have any idea why the code doesn't work when booted from the flash?