Commit Graph

21 Commits (mbed-os-5.14)

Author SHA1 Message Date
Kevin Bracey f50e7b1da3 Clean up ARM toolchain heap+stack setup in targets
ARM Compiler 6.13 testing revealed linker errors pointing out
conflicting use of `__user_setup_stackheap` and
`__user_initial_stackheap` in some targets. Remove the unwanted
`__user_initial_stackheap` from the targets - the setup is
centralised in the common platform code.

Looking into this, a number of other issues were highlighted

* Almost all targets had `__initial_sp` hardcoded in assembler,
  rather than getting it from the scatter file. This was behind
  issue #11313. Fix this generally.
* A few targets' `__initial_sp` values did not match the scatter
  file layout, in some cases meaning they were overlapping heap
  space. They now all use the area reserved in the scatter file.
  If any problems are seen, then there is an error in the
  scatter file.
* A number of targets were reserving unneeded space for heap and
  stack in their startup assembler, on top of the space reserved in
  the scatter file, so wasting a few K. A couple were using that
  space for the stack, rather than the space in the scatter file.

To clarify expected behaviour:

* Each scatter file contains empty regions `ARM_LIB_HEAP` and
  `ARM_LIB_STACK` to reserve space. `ARM_LIB_STACK` is sized
  by the macro `MBED_BOOT_STACK_SIZE`, which is set by the tools.
  `ARM_LIB_HEAP` is generally the space left over after static
  RAM and stack.
* The address of the end of `ARM_LIB_STACK` is written into the
  vector table and on reset the CPU sets MSP to that address.
* The common platform code in Mbed OS provides `__user_setup_stackheap`
  for the ARM library. The ARM library calls this during startup, and
  it calls `__mbed_user_setup_stackheap`.
* The default weak definition of `__mbed_user_setup_stackheap` does not
  modify SP, so we remain on the boot stack, and the heap is set to
  the region described by `ARM_LIB_HEAP`. If `ARM_LIB_HEAP` doesn't
  exist, then the heap is the space from the end of the used data in
  `RW_IRAM1` to the start of `ARM_LIB_STACK`.
* Targets can override `__mbed_user_setup_stackheap` if they want.
  Currently only Renesas (ARMv7-A class) devices do.
* If microlib is in use, then it doesn't call `__user_setup_stackheap`.
  Instead it just finds and uses `ARM_LIB_STACK` and `ARM_LIB_HEAP`
  itself.
2019-11-18 15:42:08 +00:00
Vincent Veron 31eb49b918 TARGET_STM: Add DEVICE_SPI_COUNT to use SPIs without interference
Extend to all STM targets the work done on PR10752.

Signed-off-by: Vincent Veron <vincent.veron@st.com>
2019-06-14 14:15:56 +02:00
jeromecoutant d919498745 STM32: common cmsis.h and device.h 2019-05-27 16:27:41 +02:00
deepikabhavnani 0dc5561991 Guard RAM start and size defines 2019-02-28 19:54:38 -06:00
deepikabhavnani b598dc1f46 Target_STM: Add ARM_LIB_STACK and ARM_LIB_HEAP section
Instead of user defined symbols in assembly files or C files,
use linker scripts to add heap and stack - this is inconsistent
with ARM std linker scripts
2019-02-28 19:54:28 -06:00
Deepika e522c4691e Target_STM:_sbrk updated to use limits from linker files no need to set defines
_sbrk uses the exports from linker file __end and __HeapLimit to allocate memory
in heap. Linker scripts were updated accordingly to set the limits.
2019-02-19 15:49:49 -06:00
Przemyslaw Stekiel 58f6bf7292 [STM] Support boot stack size configuration option 2019-01-08 15:32:06 +01:00
Deepika bf1a2c8485 [ST]: Fix alignment of execute region to 8-byte boundary in ARM linker files
--legacyalign, --no_legacyalign are deprecated from ARMC6 compiler, in order to
remove deprecated flags all linker files should strictly align to 8-byte boundary
2018-10-09 14:47:14 -05:00
bcostm 7097e07b62 stm32 ticker: typo corrections 2018-07-11 14:43:36 +02:00
bcostm d8e839a789 stm32 ticker: change license 2018-07-11 14:43:16 +02:00
bcostm 32031cbab3 stm32 ticker: rename hal_tick.h in us_ticker_data.h 2018-07-11 14:42:44 +02:00
bcostm fbd7a97e19 stm32 ticker: rename macro and update ST HAL Tick functions
- rename TIM_MST_16BIT in TIM_MST_BIT_WIDTH in order to use it directly in ticker info structure
- change HAL_InitTick() and HAL_GetTick()
2018-07-11 14:39:42 +02:00
jeromecoutant ecffec8336 TARGET_STM32L1 astyle 2018-06-27 14:44:37 +02:00
bcostm b087390a1a Remove HAL_TICK_DELAY (no more used) 2018-06-05 16:53:40 +02:00
Cruz Monrreal e913e917c0
Merge pull request #6544 from ithinuel/add_rak811_adc
add ADC_AN0-2 mapped on PA_0-2
2018-04-10 18:08:03 -05:00
Wilfried Chauveau de4d7043c9 add ADC_AN0-2 mapped on PA_0-2 2018-04-05 08:33:55 +01:00
bcostm 8412807669 Update stm32l151xba.h 2018-04-03 15:01:07 +02:00
Wilfried Chauveau 85af9f96ea add IAR to the supported toolchain 2018-03-28 10:03:23 +01:00
Wilfried Chauveau c31676306a switch to stm32l151cb-a & work around flash size field width. 2018-03-26 18:00:18 +01:00
Wilfried Chauveau 495f8e4e5b add RF_TXCO_EN on PH1 and set HSI calibration to its default value 2018-03-23 10:19:49 +00:00
Wilfried Chauveau 758f3b2dbd add support for the RAK811 2018-03-23 10:19:49 +00:00