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Remove libcs3-related bits from support/ld. Break them out into
libmaple proper and Wirish as appropriate: vector table definition and
ISR declarations go into libmaple proper, and startup code goes into
Wirish. Vector table symbols are included into common.inc from an
STM32 family-specific directory under support/ld/stm32.
This is a combination of 5 commits. Individual commit messages follow:
libcs3_stm32_src: Don't depend on cs3.h.
So we can use the existing toolchain.
Move ISR decls/vector table into libmaple proper.
This allows us to configure the vector table on a per-family basis.
- Move
support/ld/libcs3_stm32_src/stm32_isrs.S
stm32_vector_table.S
to
libmaple/stm32f1/isrs_performance.S
vector_table_performance.S,
respectively.
The directory libmaple/stm32f1/ is intended to hold all
STM32F1-specific code within libmaple. Obviously, there's a lot of
work to do before this becomes true.
- support/ld/libcs3_stm32_src/Makefile: Don't try to compile
stm32_isrs.S and stm32_vector_table.S anymore.
- Add libmaple/stm32f1/rules.mk to include these new files in the
standard libmaple build.
- support/make/target-config.mk: Add LIBMAPLE_MODULE_FAMILY, which
selects a directory to use as a family-specific libmaple
submodule.
- Makefile: Add LIBMAPLE_MODULE_FAMILY to LIBMAPLE_MODULES.
Remove support/ld/libcs3_stm32_src and derived object files.
From support/ld/libcs3_stm32_src, move start.S and start_c.c into
Wirish. Modify wirish/rules.mk accordingly.
Delete support/ld/libcs3_stm32_*_density.a. These are no longer
necessary, as the relevant objects are included in the standard Wirish
build. Remove the GROUP statements from the board linker scripts
accordingly.
Remove SEARCH_DIR(.) from common.inc; it's no longer necessary. Also
fix up some comments that are now out of date.
wirish/start_c.c: Don't use CS3-style memory initialization.
Switch memory initialization to a simpler style of initializing .data
if necessary, then zeroing .bss. Initializing .data is only necessary
during Flash builds, since during RAM builds, LOADADDR(.data) ==
ADDR(.data).
This makes libmaple completely incompatible with the CS3 startup
sequence. Subsequent commits will clean up the namespace to reflect
that fact.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Add new common.inc, which is common_rom.inc with some
DEFINED(_FLASH_BUILD) usages thrown in to allow for RAM builds. It
also uses a new REGION_RODATA region alias for read-only data.
Move section .USER_FLASH to REGION_RODATA. This means it lives in RAM
under RAM builds. Although this might be surprising, not doing so
would make RAM builds useless.
Modify the individual board linker scripts to properly set
REGION_RODATA and _FLASH_BUILD before calling out to common.inc.
Delete common_rom.inc, common_ram.inc, common_header.inc, in favor of
common.inc. This should fix RAM builds on all boards.
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Specify _lm_heap_start and _lm_heap_end in Maple Native's linker
scripts to point respectively to beginning and end of FSMC-mapped
external SRAM chip addresses.
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Comment/whitespace changes only.
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Committing the results of running the following on the libmaple root
directory:
$ fromdos `grep --exclude-dir='[.]git' -Ilsr $'\r$' .`
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Add common linker scripts for ram and rom. Add medium and high density
libraries for libcs3.
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