[PATCH v2 0/3] Static initcalls

[Jerome Forissier]

Hi Marek,

On 1/24/25 10:10, Jerome Forissier wrote:
> This series replaces the dynamic initcalls (with function pointers) with
> static calls, and gets rid of initcall_run_list(), init_sequence_f,
> init_sequence_f_r and init_sequence_r. This makes the code simpler and the
> binary slighlty smaller: -2281 bytes/-0.21 % with LTO enabled and -510
> bytes/-0.05 % with LTO disabled (xilinx_zynqmp_kria_defconfig).
> 
> Execution time doesn't seem to change noticeably. There is no impact on
> the SPL.
> 
> The inline assembly fixes, although they look unrelated, are triggered
> on some platforms with LTO enabled. For example: kirkwood_defconfig.
> 
> Azure CI passed [1] except:
> - World build, imx8ulp_evk (and other imx*): "bl31.bin: Can't open: No
> such file or directory"
> - World build, xilinx_zynqmp_kria: "file not found: pmu_obj.bin"
> ...which are clearly unrelated to this series.
> 
> [1] https://dev.azure.com/u-boot/u-boot/_build/results?buildId=10405
> 
> Changes in v5:
> - Fix mistake in initcall_run_r(): CONFIG_IS_ENABLED(SYS_EARLY_PCI_INIT)
> should have been !CONFIG_IS_ENABLED(...). As a result, several CI tests
> were failing. (Tom R.)
> - Restore fixes in test/py/tests/test_trace.py and arch/sh/lib/board.c
> which had unexpectedly disappeared from v4 and caused CI errors.
> - Fix CI error caused by wrong conditionals on the fix_fdt() call:
>   tools/buildman/buildman -o /tmp -seP powerpc
>   [...]
>   common/board_f.c:752:12: error: 'fix_fdt' defined but not used [-Werror=unused-function]
> - Add "arm: asm/system.h: mrc and mcr need .arm if __thumb2__ is not set"
> to fix a build error with LTO detecting mcr/mrc instructions emitted in
> Thumb mode on a CPU that doesn't support it:
>   make sheevaplug_defconfig
>   make -j$(nproc) CROSS_COMPILE="ccache arm-linux-gnueabi-"
>   [...]
>     LTO     u-boot
>   {standard input}: Assembler messages:
>   {standard input}:9241: Error: selected processor does not support `mcr p15,1,r0,c15,c11,0' in Thumb mode
>   {standard input}:19196: Error: selected processor does not support `mrc p15,1,r3,c15,c1,0' in Thumb mode
>   {standard input}:19223: Error: selected processor does not support `mcr p15,1,r3,c15,c1,0' in Thumb mode
>   {standard input}:19241: Error: selected processor does not support `mrc p15,1,r3,c15,c1,0' in Thumb mode
>   {standard input}:19268: Error: selected processor does not support `mcr p15,1,r3,c15,c1,0' in Thumb mode
>   {standard input}:19286: Error: selected processor does not support `mrc p15,1,r3,c15,c1,0' in Thumb mode
>   {standard input}:19321: Error: selected processor does not support `mcr p15,1,r3,c15,c1,0' in Thumb mode
>   {standard input}:19341: Error: selected processor does not support `mrc p15,0,r3,c1,c0,0' in Thumb mode
>   {standard input}:19372: Error: selected processor does not support `mcr p15,0,r3,c1,c0,0' in Thumb mode
>   make[1]: *** [/tmp/ccu1wZWX.mk:11: /tmp/ccIab81n.ltrans3.ltrans.o] Error 1
> 
> Changes in v4:
> - Fold all changes to board_init_*() into a single patch
> - Use '#if CONFIG_IS_ENABLED(FOO) INITCALL(init_foo) #endif' instead of
> 'CONFIG_IS_ENABLED(FOO, (INITCALL(init_foo);));' (Caleb C., Simon G.).
> As a consequence, drop Michal's patch ("common: board: Simplify array
> with function pointers with CONFIG_IS_ENABLED").
> - Rebase on next
> 
> Changes in v3:
> - Use printf() rather than debug() to report initcall failures
> (Quentin S.)
> - initcall_run_f(): replace one erroneous call to WATCHDOG_INIT() with
> WATCHDOG_RESET() (Ilias A.)
> - Fix relocate_code() in arch/sh/lib/board.c to address CI failures with
> r2dplus (https://lists.denx.de/pipermail/u-boot/2025-January/576213.html)
> (Tom R.)
> - Add comments to initcall_run_f() and initcall_run_r() (Simon G.)
> 
> Changes in v2:
> - INTICALL() and INITCALL_EVT() now call hang() immediately on error
> - Fixed typo: s/intcall_run_f_r/initcall_run_f_r/
> 
> Jerome Forissier (3):
>   arm: asm/system.h: mrc and mcr need .arm if __thumb2__ is not set
>   common: board: make initcalls static
>   initcall: remove initcall_run_list()
> 
>  arch/arm/include/asm/system.h             |  22 +-
>  arch/arm/lib/cache.c                      |   5 +-
>  arch/arm/mach-kirkwood/include/mach/cpu.h |   9 +-
>  arch/sh/lib/board.c                       |   9 +-
>  common/board_f.c                          | 223 +++++++++----------
>  common/board_r.c                          | 251 +++++++++++-----------
>  include/initcall.h                        |  45 ++--
>  lib/Makefile                              |   1 -
>  lib/initcall.c                            | 102 ---------
>  test/py/tests/test_trace.py               |   8 +-
>  10 files changed, 297 insertions(+), 378 deletions(-)
>  delete mode 100644 lib/initcall.c


Do you need something more from me on this series? Thanks!

-- 
Jerome