[PATCH v2 00/14] OpenSBI Kconfig Support

[Anup Patel]

In future, we will see more drivers in OpenSBI for system reset, serial port,
power management, etc platform specific devices. We need platform specific
compile time configuration to allow users control the size of OpenSBI generic
firmware binaries by only enabling desired drivers. In other words, users
should be allowed to restrict the set of RISC-V platforms on which OpenSBI
generic firmwares built by them can run.

To address above, we add Kconfig support for OpenSBI platforms using the
kconfig-frontends project which is a standalone kconfig parser.

The kconfig-frontends is available as a package/receipe on various distros
(such as Debian, UBuntu, OpenSUSE, etc) and Yocto project.

To try OpenSBI Kconfig support with generic platform, here are few
example commands:
make PLATFORM=generic             <-- builds OpenSBI using "defconfig"
make PLATFORM=generic menuconfig  <-- launches graphical interface for changes

These patches can also be found in the kconfig_v2 branch at:
https://github.com/avpatel/opensbi.git

Changes since v1:
 - Fix SPDX license specifier in new Kconfig files

Anup Patel (14):
  Makefile: Add initial kconfig support for each platform
  Makefile: Compile lib/utils sources separately for each platform
  lib: utils/serial: Use kconfig for enabling/disabling drivers
  lib: utils/reset: Use kconfig for enabling/disabling drivers
  lib: utils/sys: Use kconfig for enabling/disabling drivers
  lib: utils/timer: Use kconfig for enabling/disabling drivers
  lib: utils/ipi: Use kconfig for enabling/disabling drivers
  lib: utils/irqchip: Use kconfig for enabling/disabling drivers
  lib: utils/i2c: Use kconfig for enabling/disabling drivers
  lib: utils/gpio: Use kconfig for enabling/disabling drivers
  lib: utils/fdt: Use kconfig for enabling/disabling
  platform: generic: Use kconfig for enabling/disabling overrides
  platform: Remove redundant config.mk from all platforms
  docs: Update documentation for kconfig support

 Kconfig                                   |  23 +++++
 Makefile                                  | 102 ++++++++++++++++------
 README.md                                 |  25 +++++-
 docs/firmware/fw_dynamic.md               |   2 +-
 docs/firmware/fw_jump.md                  |   4 +-
 docs/firmware/fw_payload.md               |   4 +-
 docs/library_usage.md                     |   6 +-
 docs/platform/platform.md                 |   4 +-
 docs/platform_guide.md                    |   9 +-
 firmware/Kconfig                          |   1 +
 include/sbi_utils/fdt/fdt_domain.h        |   9 ++
 include/sbi_utils/fdt/fdt_pmu.h           |  10 +++
 include/sbi_utils/ipi/fdt_ipi.h           |   9 ++
 include/sbi_utils/irqchip/fdt_irqchip.h   |  10 +++
 include/sbi_utils/irqchip/imsic.h         |  10 +++
 include/sbi_utils/reset/fdt_reset.h       |  12 +++
 include/sbi_utils/serial/fdt_serial.h     |   8 ++
 include/sbi_utils/timer/fdt_timer.h       |   9 ++
 lib/utils/Kconfig                         |  25 ++++++
 lib/utils/fdt/Kconfig                     |  18 ++++
 lib/utils/fdt/objects.mk                  |   8 +-
 lib/utils/gpio/Kconfig                    |  23 +++++
 lib/utils/gpio/objects.mk                 |  10 +--
 lib/utils/i2c/Kconfig                     |  23 +++++
 lib/utils/i2c/objects.mk                  |  10 +--
 lib/utils/ipi/Kconfig                     |  23 +++++
 lib/utils/ipi/objects.mk                  |  10 +--
 lib/utils/irqchip/Kconfig                 |  41 +++++++++
 lib/utils/irqchip/objects.mk              |  22 ++---
 lib/utils/libfdt/Kconfig                  |   5 ++
 lib/utils/libfdt/objects.mk               |   4 +-
 lib/utils/reset/Kconfig                   |  37 ++++++++
 lib/utils/reset/objects.mk                |  28 +++---
 lib/utils/serial/Kconfig                  |  73 ++++++++++++++++
 lib/utils/serial/objects.mk               |  44 +++++-----
 lib/utils/sys/Kconfig                     |  13 +++
 lib/utils/sys/objects.mk                  |   4 +-
 lib/utils/timer/Kconfig                   |  23 +++++
 lib/utils/timer/objects.mk                |  10 +--
 platform/andes/ae350/Kconfig              |   8 ++
 platform/andes/ae350/config.mk            |  36 --------
 platform/andes/ae350/configs/defconfig    |   0
 platform/andes/ae350/objects.mk           |  29 ++++++
 platform/fpga/ariane/Kconfig              |  10 +++
 platform/fpga/ariane/config.mk            |  36 --------
 platform/fpga/ariane/configs/defconfig    |   0
 platform/fpga/ariane/objects.mk           |  35 ++++++++
 platform/fpga/openpiton/Kconfig           |  10 +++
 platform/fpga/openpiton/config.mk         |  35 --------
 platform/fpga/openpiton/configs/defconfig |   0
 platform/fpga/openpiton/objects.mk        |  35 ++++++++
 platform/generic/Kconfig                  |  26 ++++++
 platform/generic/allwinner/objects.mk     |   4 +-
 platform/generic/config.mk                |  40 ---------
 platform/generic/configs/defconfig        |  29 ++++++
 platform/generic/objects.mk               |  33 +++++++
 platform/generic/sifive/objects.mk        |   8 +-
 platform/kendryte/k210/Kconfig            |  10 +++
 platform/kendryte/k210/config.mk          |  19 ----
 platform/kendryte/k210/configs/defconfig  |   0
 platform/kendryte/k210/objects.mk         |  12 +++
 platform/nuclei/ux600/Kconfig             |  10 +++
 platform/nuclei/ux600/config.mk           |  30 -------
 platform/nuclei/ux600/configs/defconfig   |   0
 platform/nuclei/ux600/objects.mk          |  22 +++++
 platform/nuclei/ux600/platform.c          |   1 -
 platform/template/Kconfig                 |   9 ++
 platform/template/config.mk               |  77 ----------------
 platform/template/configs/defconfig       |   0
 platform/template/objects.mk              |  72 +++++++++++++++
 platform/template/platform.c              |   2 +-
 scripts/create-binary-archive.sh          |   2 +-
 72 files changed, 948 insertions(+), 403 deletions(-)
 create mode 100644 Kconfig
 create mode 100644 firmware/Kconfig
 create mode 100644 lib/utils/Kconfig
 create mode 100644 lib/utils/fdt/Kconfig
 create mode 100644 lib/utils/gpio/Kconfig
 create mode 100644 lib/utils/i2c/Kconfig
 create mode 100644 lib/utils/ipi/Kconfig
 create mode 100644 lib/utils/irqchip/Kconfig
 create mode 100644 lib/utils/libfdt/Kconfig
 create mode 100644 lib/utils/reset/Kconfig
 create mode 100644 lib/utils/serial/Kconfig
 create mode 100644 lib/utils/sys/Kconfig
 create mode 100644 lib/utils/timer/Kconfig
 create mode 100644 platform/andes/ae350/Kconfig
 delete mode 100644 platform/andes/ae350/config.mk
 create mode 100644 platform/andes/ae350/configs/defconfig
 create mode 100644 platform/fpga/ariane/Kconfig
 delete mode 100644 platform/fpga/ariane/config.mk
 create mode 100644 platform/fpga/ariane/configs/defconfig
 create mode 100644 platform/fpga/openpiton/Kconfig
 delete mode 100644 platform/fpga/openpiton/config.mk
 create mode 100644 platform/fpga/openpiton/configs/defconfig
 create mode 100644 platform/generic/Kconfig
 delete mode 100644 platform/generic/config.mk
 create mode 100644 platform/generic/configs/defconfig
 create mode 100644 platform/kendryte/k210/Kconfig
 delete mode 100644 platform/kendryte/k210/config.mk
 create mode 100644 platform/kendryte/k210/configs/defconfig
 create mode 100644 platform/nuclei/ux600/Kconfig
 delete mode 100644 platform/nuclei/ux600/config.mk
 create mode 100644 platform/nuclei/ux600/configs/defconfig
 create mode 100644 platform/template/Kconfig
 delete mode 100644 platform/template/config.mk
 create mode 100644 platform/template/configs/defconfig

-- 
2.34.1