MCF51CN MQX application + FNET bootloader

butok — Thu, 09 Jun 2011 18:55:51 GMT

If you have an issue to run MQX + FNET Bootloader on Lasco.

You should aply workaround to MQX code (otherwise it goes to infinite “while” )

/Special thanks to Amly/

bsp_init.c (for mcf51cn platform):

static void _mqx_clock_init_25MHz()

{

...............................................

#if 0

//b) Loop until OSCINIT (bit 1) in MCGSC is 1, indicating the crystal selected by the EREFS bit

//has been initialized.

while (!(reg_ptr->MCG.MCGSC & MCF51XX_MCGSC_OSCINIT_MASK))

;

#endif

...............................................

#if 0

// wait for Reference Status bit to update

while (!(reg_ptr->MCG.MCGSC & MCF51XX_MCGSC_IREFST_MASK))

;

#endif

...............................................

}

Hope it be fixed in the future version of MQX.

Also the standard modifications that are valid for all platforms:

1. user_config.h

#define MQX_ROM_VECTORS 0

2. intflash_FNET.lcf

MEMORY

{

fnet_bootloader (RX) : ORIGIN = 0x00000000, LENGTH = 0x0000B000 # 44KB reserved for FNET bootloader

# cfmprotrom (RX) : ORIGIN = 0x00000400, LENGTH = 0x00000020

vectorrom (RX) : ORIGIN = 0x0000B000, LENGTH = 0x00000400

# rom (RX) : ORIGIN = 0x00000420, LENGTH = 0x0001FBDF # Code + Const data

rom (RX) : ORIGIN = 0x0000B400, LENGTH = 0x00014800 # Code + Const data

fapp_paramsrom (RW) : ORIGIN = 0x0001FC00, LENGTH = 0x00000400 # 1KB = Last logical-block resevrd for params.

ram (RWX) : ORIGIN = 0x00800000, LENGTH = 0x00006000 # SRAM - RW data

# kernel space starts after RAM variables (Location of MQX Kernel data + MQX heap)

end_of_kd (RW): ORIGIN = 0x00805FF0, LENGTH = 0x00000000

# Boot stack reused by MQX Kernel data

bstack (RW): ORIGIN = 0x00805A00, LENGTH = 0x00000200 # Boot stack

end_bstack (RW): ORIGIN = 0x00805BFF, LENGTH = 0x00000000

}

SECTIONS

{

........................

#.cfmprotect :

# *(.cfmconfig)

# . = ALIGN (0x4);

#} > cfmprotrom

.........................

}

Best regards,

Andrey Butok

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MCF51CN MQX application + FNET bootloader