[U-Boot-Users] "weak" reference seems not working on git://git.denx.de/u-boot-at91.git
os user
gnusercn at gmail.com
Mon Jul 28 05:52:34 CEST 2008
Hi folks,
I use Atmel AT91SAM9260-EK boards, arm-linux-gcc (GCC) 4.2.4. After I
pulled the latest code from git://git.denx.de/u-boot-at91.git, I found
that the "weak" function seems not working.
In lib_arm/board.c, we can see,
void inline __coloured_LED_init (void) {}
void inline coloured_LED_init (void) __attribute__((weak,
alias("__coloured_LED_init")));
And then I defined my own version in board/atmel/at91sam9260ek/led.c,
void coloured_LED_init(void)
{
//.. do someting...
}
After 1)make at91sam9260ek_config and 2) make 3) download the
u-boot.bin to dataflash 4) reseting the board, I found that my version
of coloured_LED_init never gets called. Could anyone please explain
the trick behind?
BTW, If I comment out the declaration in lib_arm/board.c, my version
of coloured_LED_init can get called.
Thanks.
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