[U-Boot] [PATCH v3 0/6] Introduce low-level debug for ARM architecture

[Masahiro Yamada]

I have been in trouble for a while to debug some nasty problem
where neighter a debugger nor printf() function is available.

I found the lowlevel debug feature in ARM Linux can be used as is
in U-Boot too.

I tested this series on our SoCs (32bit ARM, specificly Coretex-A9).
Because I was not sure about aarch64, I have this feature
depend on "! ARM64".

1/6 and 2/6 refactor a bit and move CONFIG_ARM64 to Kconfig.

3/6 imports some source files from Linux 3.16 and
5/6 adds the Kconfig menu.



Masahiro Yamada (6):
  vexpress64: kconfig: consolidate CONFIG_TARGET_VEXPRESS_AEMV8A_SEMI
  kconfig: armv8: move CONFIG_ARM64 to Kconfig
  arm: debug: import debug files from Linux 3.16
  arm: debug: replace license blocks with SPDX
  arm: debug: add Kconfig entries for lowlevel debug
  arm: debug: adjust for U-Boot

 arch/arm/Kconfig                       |  13 +-
 arch/arm/Kconfig.debug                 |  64 ++++++
 arch/arm/cpu/armv8/Kconfig             |   7 +
 arch/arm/include/debug/8250.S          |  52 +++++
 arch/arm/lib/Makefile                  |   2 +
 arch/arm/lib/debug.S                   | 136 ++++++++++++
 board/armltd/vexpress64/Kconfig        |  24 --
 board/freescale/ls2085a/Kconfig        |   8 -
 configs/ls2085a_emu_D4_defconfig       |   2 +-
 configs/ls2085a_emu_defconfig          |   2 +-
 configs/ls2085a_simu_defconfig         |   2 +-
 configs/vexpress_aemv8a_defconfig      |   1 -
 configs/vexpress_aemv8a_semi_defconfig |   4 +-
 include/linux/serial_reg.h             | 388 +++++++++++++++++++++++++++++++++
 14 files changed, 664 insertions(+), 41 deletions(-)
 create mode 100644 arch/arm/Kconfig.debug
 create mode 100644 arch/arm/cpu/armv8/Kconfig
 create mode 100644 arch/arm/include/debug/8250.S
 create mode 100644 arch/arm/lib/debug.S
 create mode 100644 include/linux/serial_reg.h

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1.9.1