With recent toolchain versions, some boards would not build because
or errors like this one (here for ocotea board when building with
ELDK 4.2 beta):
ppc_4xx-ld: section .bootpg [fffff000 -> fffff23b] overlaps section .bss [fffee900 -> fffff8ab]
For many boards, the .bss section is big enough that it wraps around
at the end of the address space (0xFFFFFFFF), so the problem will not
be visible unless you use a 64 bit tool chain for development. On
some boards however, changes to the code size (due to different
optimizations) we bail out with section overlaps like above.
The fix is to add the NOLOAD attribute to the .bss and .sbss
sections, telling the linker that .bss does not consume any space in
the image.
Signed-off-by: Wolfgang Denk <wd@denx.de>
ARM memory layout fixes: the abort-stack is now set up in the
correct RAM area, and the BSS is zeroed out as it should be.
Furthermore, the magic variables 'armboot_end' and 'armboot_end_data'
of the linker scripts are replaced by '__bss_start' and '_end',
resp., which is a further step to eliminate unnecessary differences
between the implementation of the CPU architectures.
- remove trailing white space, trailing empty lines, C++ comments, etc.
- split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c)
* Patches by Kenneth Johansson, 25 Jun 2003:
- major rework of command structure
(work done mostly by Michal Cendrowski and Joakim Kristiansen)
- fix bug in BOOTP code (must use NetCopyIP)
- update of CSB226 port
- clear BSS segment on XScale
- added support for i2c_init_board() function
- update to the Innokom plattform
* Extend support for redundand environments for configurations where
environment size < sector size
- Add support for Innokom board
- Don't complain if "install" fails
- README cleanup (remove duplicated lines)
- Update PXA header files
* Add documentation for existing POST code (doc/README.POST)
* Patch by Laudney Ren, 15 Jan 2003:
Fix handling of redundand environment in "tools/envcrc.c"
* Patch by Detlev Zundel, 28 Feb 2003:
Add bedbug support for 824x systems
* Add support for 16 MB flash configuration of TRAB board
* Patch by Erwin Rol, 27 Feb 2003:
Add support for RTEMS
* Add image information to README
* Fix dual PCMCIA slot support (when running with just one
slot populated)
* Add VFD type detection to trab board
* extend drivers/cs8900.c driver to synchronize ethaddr environment
variable with value in the EEPROM
