Patch Status For Particular Architectures

ARM

• U nder consideration
• T esting
• R eferred back to owner
• I n (linux ARM Wiki U-Boot) Repository
• P ushed (to ARM U-Boot repository)
• C losed (merged in main tree) Deleted from this page after time.
• D eclined (too many objections to just be referred back to owner)

Required ARM Patches

• Remove all externs from .c files - see esp. davinci.
• Remove -msoft-float for all ARM boards/cpus - floating point is deprecated, although the ELDK tools are built with this option.
  Code may be built locally with this option to allow local use of floating point.
• The tag start.S::reset is confusing - all to be renamed start_code.
• Files named lowlevel_init.S should contain BOARD initialisation code & be located in the corresponding board directory
  There are some under cpu. Any CPU initialisation code should be moved to the cpu_init_crit function in the corresponding cpu start.S file
  or the start_code in that file.
• cmc_pu2 && mp2usb use at91 defines ? should they ?
• Recode all
  sub rx, rx, #CONSTANT
  with regard to possible values of #CONSTANT
  - must be 8 bit rotated in 32.
  ? Provide an ifdef to allow smaller code when constant is acceptable ?
  ? What expansion will occur if just all coded to allow any value ?
• Consolidate all the arm sizes.h
  With the aim of replacing all SZ_xx macros with e.g (xx * 1024 * 1024))
• Use r7 for the gd pointer, rather than r8
  • r8 is banked - not available in FIQ handlers without additional code
  • r7 fits into Thumb/Thumb-2 instructions
  • Future ARM architectures may have similar constraints
• Remove the unused S_R<regnum> defines throughout ARM code
• Exception vectors incorrect in many files
• General timer routines incorrect esp TIMER_LOAD_VAL
• Implement weak, architecture specific, cache functions in lib_arm to allow their removal from various cpu files.
• Implement weak reset_cpu function in lib_arm to allow removal from cpu files.

Other Architectures

-- PeterPearse - 20 Mar 2007