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>
* Patch by Sascha Hauer, 28 Jun:
- add generic support for Motorola i.MX architecture
- add support for mx1ads, mx1fs2 and scb9328 boards
* Patches by Marc Leeman, 23 Jul 2004:
- Add define for the PCI/Memory Buffer Configuration Register
- corrected comments in cpu/mpc824x/cpu_init.c
* Add support for multiple serial interfaces
(for example to allow modem dial-in / dial-out)
attempting to switch on USB on SX1 board.
* Patch by Josef Wagner, 18 Mar 2004:
- Add support for MicroSys XM250 board (PXA255)
- Add support for MicroSys PM828 board (MPC8280)
- Add support for 32 MB Flash on PM825/826
- new SDRAM refresh rate for PM825/PM826
- added support for MicroSys PM520 (MPC5200)
- replaced Query by Identify command in CPU86/flash.c
to support 28F160F3B
* Fix wrap around problem with udelay() on ARM920T
* Add support for Macronix flash on TRAB board
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
Wolfgang Denk
Wolfgang Denk
wdenk