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Commit Graph

13 Commits

Author SHA1 Message Date
Stacey Sheldon
3cbf4499e1 ld: make sure current pointer never goes backwards
Fixes linking on ld version 2.22.
2012-01-21 21:18:06 -05:00
James Cotton
eb191d869a Mainboard: Get spektrum working again. 2011-09-10 14:19:54 -05:00
James Cotton
9c7799dfe6 UAVObject Init: Get rid of deprecated linker init code 2011-08-10 22:48:42 -05:00
Stacey Sheldon
442d56c1c5 linker: Add section to record unused RAM
Note that this section will be absorbed by the heap at runtime.
2011-07-14 23:22:42 -04:00
Mathieu Rondonneau
fbf0b021c7 OP-423: Replace hardcoded value and get value from memory section (change from code review) 2011-06-25 20:06:33 -07:00
Mathieu Rondonneau
65cf467ca4 OP-423: move the module initialize funtion into a specific section for OP and CC.
- create linker section for those <module>Initialize()
- later this list will incorporate parameters as well. (this probably will be more a OP feature to swap/remove/delete module on the fly.
- this is not done at compile time anymore by Makefile.
- this will allow us to have control on the module start at run-time (not implemented but build the ground for it).
- this simplify the startup (Part of code re-org).
- this change does not affect sim_posix and win32 (since they don't need that)
- ensure it's compiling for PiOS.posix
- port to PiOS.win32 but not tested (not compiled)
- tested on CC
- compile on OP.
- this free ~200 bytes.
- current avalable bytes (is we keep the same remaining bytes on the stack than before) is easily passed the 1.2Ko mark on CC with new gcc (4.5.2)
- this does not include init-reorg for each module (I still think more can be freed)
2011-06-16 22:13:19 -07:00
Mathieu Rondonneau
e8cdf22427 OP-423 Port to OP: Claim (at run-time) the remaining un-used bytes (between heap and end of RAM) that are for data growth (needed at compile time).
CAREFULL: the heap section need to be the last section in RAM to avoid overwritting data...

also move address into linker (CC and OP)
2011-06-15 18:54:35 -07:00
Mathieu Rondonneau
3780de8d3e OP-423 port to OP (heap2) the previous changes done in CC (heap1) (see c95b199166)
I managed to test CC with heap2 changes and the init stack claimed back to heap once scheduler starts.

the changes of this commit are OP related (just cleanup on CC side):
Arch specific stuff (in reset vector) to hide this from portable code:
     - switch back to MSP stack before starting the scheduler so that the sheduler can use the IRQ stack (when/if needed).
     - call the C portable function in heap2 to claim some stack back (the number to claim is taken from linker file).
     - start the scheduler from reset vector (I move this here from main because it make sense to not go back to C (so that I don't need to copy the rolled stack in case the sheduler returns). This make it more clean.
     - Also I have added the call to the mem manager if sheduler return. that way, we don't reset indefinitely if memory runs out. We will go to this handler and figure things out (right now, it's just looping but at least not rebooting. Probably trap NMI would be better (later improvement).
2011-06-14 20:10:53 -07:00
Mathieu Rondonneau
1f54e32ea9 OP-423 also add changes to OP. (I can not test it because I don't have a board so only compile test) 2011-06-13 17:10:14 -07:00
Stacey Sheldon
2d47427b05 link: Use alternate declaration of pios_board_info_blob
Make use of a shorter notation to allow the linker to provide
the correct address for pios_board_info_blob.
2011-05-23 18:21:42 -04:00
Stacey Sheldon
6e406c0232 build: remove all remaining use of -DUSE_BOOTLOADER
The USE_BOOTLOADER compile flag was only being used
to determine where the ISR vector table was located.

Provide this explicitly from the linker since it knows
exactly where it is putting the ISR vector table.
2011-05-23 18:21:42 -04:00
Stacey Sheldon
575010169a build: add pios_board_info_blob struct to bootloader flash image
The board info blob is stored in the last 128 bytes of the
bootloader's flash bank.  You can access this data from the
application firmware like this:
  #include <pios_board_info.h>

  if (pios_board_info_blob.magic == PIOS_BOARD_INFO_BLOB_MAGIC) {
    /* Check some other fields */
  }

DO NOT link pios_board_info.c into your application firmware.
Only bootloaders should provide the content for the board info
structure.  The application firmware is only a user of the data.
2011-05-16 08:30:30 -04:00
Stacey Sheldon
29ec2f198b build: convert all app loads to require bootloaders
This change is made up of a number of tightly coupled
changes:
 - Deprecate the use of the USE_BOOTLOADER command-line
   option.  It is now hard-coded in each Makefile.
   Overriding it on the command line is not allowed.
 - Split apart the memory declaration and the section
   declaration in all linker files (*_memory.ld and
   *_sections.ld).
 - Describe the split between bootloader and app sections
   of flash in each board's _memory.ld file.
 - Change program target to selectively erase flash so
   that the installed bootloader is preserved across even
   JTAG programming operations.
 - All elf files are built with debug symbols and are not
   stripped.  This should help debugging with gdb.  The
   images programmed on the boards are all .bin files now
   which do not include symbols.
2011-05-08 12:40:29 -04:00