geah wrote on Wednesday, December 12, 2007:
A question regarding Freertos version 4.6.1 and ARM7 gcc eclipse:
In the lpc2368.ld the __bss_end__ is set to the beginning of ETH Ram. Is this correct?
The boot.S file states that the bss region shall be cleared and with __bss_end__ set to to beginning of ETH RAM it tries to clear a lot of RAM? The bss region ranges from ~0x40000000 to 0x7FE00000 according to the lpc2368.ld file.
I changed my lpc2368.ld so that __bss_end__ pointed to the end of the bss statement in the lpc2368.ld file.
MEMORY
{
flash : ORIGIN = 0x00000000, LENGTH = 500K
ram : ORIGIN = 0x40000000, LENGTH = 32K
usbram : ORIGIN = 0x7FD00000, LENGTH = 8K
ethram : ORIGIN = 0x7FE00000, LENGTH = 16K
}
__stack_end__ = 0x40000000 + 32K - 4;
SECTIONS
{
. = 0;
startup : { KEEP(*(.startup))} >flash
prog :
{
*(.text)
*(.rodata)
*(.rodata*)
*(.glue_7)
*(.glue_7t)
} >flash
__end_of_text__ = .;
.data :
{
__data_beg__ = .;
__data_beg_src__ = __end_of_text__;
*(.data)
__data_end__ = .;
} >ram AT>flash
.bss :
{
__bss_beg__ = .;
*(.bss)
} >ram
/* Align here to ensure that the .bss section occupies space up to
_end. Align after .bss to ensure correct alignment even if the
.bss section disappears because there are no input sections. */
. = ALIGN(32 / 8);
/*Better. */
_bss_end__ = . ; __bss_end__ = . ;
.usbram (NOLOAD):
{
__usbram_beg__ = .;
*(.dmaram)
__usbram_end__ = .;
} >usbram
.ethram (NOLOAD):
{
__ethram_beg__ = .;
*(.ethram)
__ethram_end__ = .;
} >ethram
}
. = ALIGN(32 / 8);
_end = .;
/*No correct _bss_end__ = . ; __bss_end__ = . ; __end__ = . ;*/
__end__ = .;
PROVIDE (end = .);
Is this a bug?