[PATCH v3 00/95] RFC: Migrate to split config

Simon Glass sjg at chromium.org
Mon Feb 13 00:15:03 CET 2023


U-Boot uses an SPL prefix on CONFIG options to indicate when an option
relates to SPL. For example, while CONFIG_TEXT_BASE is the text base for
U-Boot proper, CONFIG_SPL_TEXT_BASE is the text base for SPL.

Within the code it is possible do things like CONFIG_VAL(TEXT_BASE) to
get that value. It returns the appropriate option, depending on the phase
being built.

The same applies for boolean options, like CONFIG_BLK and CONFIG_SPL_BLK
but in that case we use CONFIG_IS_ENABLED(BLK) to obtain the value.

For Makefiles we use an SPL_TPL_ macro which evalutes either to empty,
SPL, TPL or even VPL depending on the build phase. So we can do things
like:

   obj-$(CONFIG_$(SPL_TPL_)CLK) += clk-uclass.o

To complicate things a little, some options like CONFIG_ARCH_APPLE do not
have an SPL version, so people have to remember to use IS_ENABLED()
instead of CONFIG_IS_ENABLED(). If the latter is used, the value will be
false.

All of this is rather confusing, since:

- people have to know whether to use IS_ENABLED() or CONFIG_IS_ENABLED()
- the Makefiles are cluttered with $(SPL_TPL_) constructs
- plain use of a CONFIG option (e.g. #ifdef CONFIG_CLK) may be correct in
  some cases but not in others

This series updates U-Boot to use separate config files for each phase of
the build. It drops use of CONFIG_IS_ENABLED() and SPL_TPL_ as well.

For now this series does not fully work due to inconsistencies in the
Kconfig options. Many of these have been fixed [1] [2a] [2b] but more
remain.

This series is available at u-boot-dm/splc-working

Size changes are available here: https://pastebin.com/hSjhM3y7

[1] https://patchwork.ozlabs.org/project/uboot/list/?series=339004
[2a] https://patchwork.ozlabs.org/project/uboot/list/?series=339199&state=*
[2b] https://patchwork.ozlabs.org/project/uboot/list/?series=339208&state=*

Changes in v3:
- Add new patch to disable QFW bootmeth in SPL
- Move the option down to the non-SPL part of drivers/Makefile
- Add a bracket to (SPL
- Add (SPL) to the end of the comment
- Use a consistent format for the comment
- Add new patch with a Kconfig for SPL_FSP_VERSION2
- Move SPL_GENERATE_ACPI_TABLE patch to this series
- Move SPL_EFI_LOADER patch to this series
- Correct 'VPL' typo
- Use a consistent format for the comment
- Rework commit submit
- Use a consistent format for the comment
- Use a consistent format for the comment
- Use a consistent format for the comment
- Fix a transitory build error with sandbox_spl
- Add DFU_VIRT FSL_ISBC_KEY_EXT GENERATE_SMBIOS_TABLE
  GMAC_ROCKCHIP I8259_PIC IMX_RDC NXP_FSPI PCI_PNP PHY_CADENCE_TORRENT
  QFW_PIO SEC_FIRMWARE_ARMV8_PSCI SPI_FLASH_BAR SPI_FLASH_MACRONIX
- Add CMD_BOOTEFI_BOOTMGR CMD_EFICONFIG CMD_PXE
- Fix move_config typo
- Add ARCH_VERSAL_NET CMD_DHCP ENV_WRITEABLE_LIST EXPO
- Add TARGET_KMCOGE5NE TARGET_KMETER1
- Drop header-file changes not needed in this patch
- Make sure that the config is rebuilt with this change
- Move header-file changes into this patch
- Add more explanation to the commit message
- Add new patch to allow distroboot environment to be the same in SPL
- Add a new patch to disallow commands in SPL
- Reword commit message and subject
- Update to work with latest source
- Drop a comment which mentions CONFIG_IS_ENABLED()
- Move to conf_nospl: CMD_DHCP DFU_VIRT GENERATE_SMBIOS_TABLE
- Move to conf_nospl: GMAC_ROCKCHIP I8259_PIC IMX_RDC NXP_FSPI PCI_PNP
- Move to conf_nospl: PHY_CADENCE_TORRENT QFW_PIO SEC_FIRMWARE_ARMV8_PSCI
- Move to conf_nospl: SPI_FLASH_BAR SPI_FLASH_MACRONIX
- Move to conf_nospl: SCMD_BOOTEFI_BOOTMGR CMD_EFICONFIG CMD_PXE

Changes in v2:
- Rebase to previous series
- Correct the tag
- Redo commit message
- Introduce CONFIG_PPL approach
- Include code from 'Update CONFIG_IS_ENABLED() for split files' too
- Reworked based on earlier patches
- Move patches from splb which add new Kconfig options

Simon Glass (95):
  mtd: Drop unused kb9202_nand driver
  mtd: Drop unused CONFIG_ONENAND_U_BOOT
  sh4: Drop unused twl6030 driver
  moveconfig: Update to detect / correct missing SPL Kconfigs
  bootstd: Disable QFW bootmeth in SPL
  Correct SPL uses of ARCH_MVEBU
  Correct SPL uses of DISPLAY_AER_FULL
  Correct SPL uses of FSL_ISBC_KEY_EXT
  Correct SPL uses of MULTIPLEXER
  Correct SPL use of PG_WCOM_UBOOT_UPDATE_SUPPORTED
  Correct SPL use of PHY_CADENCE_SIERRA
  Correct SPL uses of PHY_FIXED
  boot: Add a Kconfig for SPL_FIT_CIPHER
  boot: Add a Kconfig for SPL_BOOTSTD_FULL
  boot: Add Kconfigs for BOOTMETH_VBE_REQUEST
  Correct SPL use of DM_RNG
  boot: Add a Kconfig for SPL_BOOTDEV_SPI_FLASH
  boot: Add a Kconfig for SPL_BOOTDEV_ETH
  dm: Add a Kconfig for SPL_DEVRES
  dm: Add a Kconfig for SPL_DM_HWSPINLOCK
  boot: Add a Kconfig for SPL_OF_LIVE
  cmd: Add a Kconfig for SPL_CRC32_VERIFY
  console: Add a Kconfig for SPL_CONSOLE_MUX et al
  button: Add a Kconfig for SPL_BUTTON
  lib: Add a Kconfig for SPL_ERRNO_STR
  lib: Add a Kconfig for SPL_FSP_VERSION2
  iommu: Add a Kconfig for SPL_IOMMU
  pinctrl: Add a Kconfig for SPL_PINCTRL_ARMADA_38X
  virtio: Add a Kconfig for SPL_VIRTIO
  lib: Add a Kconfig for SPL_BZIP2
  acpi: Add a Kconfig for SPL_ACPIGEN
  rockchip: Add a Kconfig for SPL_RESET_ROCKCHIP
  mediatek: Add a Kconfig for SPL_RESET_MEDIATEK
  lib: Add a Kconfig for SPL_GENERATE_ACPI_TABLE
  efi: Add a Kconfig for SPL_EFI_LOADER et al
  moveconfig: Various minor improvements
  sandbox: Expand size for VPL image
  event: Add Kconfig options for SPL
  bootstd: Add Kconfig options for SPL
  cmd: Add SPL Kconfigs for CMDLINE and HUSH
  boot: Add a Kconfig for SPL_QCOM_PMIC_GPIO
  cros_ec: Add SPL Kconfigs for cros_ec features
  boot: Add a Kconfig for SPL_UT_COMPRESSION
  env: Avoid checking ENV_IS_IN when env disabled
  boot: Add a Kconfig for SPL_AVB_VERIFY
  env: Allow VPL environment to be nowhere
  lib: Add VPL options for SHA1 and SHA256
  x86: Use string functions for all 32-bit builds
  lib: Fix build condition for tiny-printf
  sandbox: Tidy up RTC options
  sandbox: Use the generic VPL option to enable VPL
  sandbox: Tidy up I2C options
  fixdep: Add support for VPL
  fixdep: Refactor to make testing easier
  fixdep: Add some tests for parse_config_line()
  test: Add SPL versions of the TEST_KCONFIG options
  lib: Add an SPL config for LIB_UUID
  test: Tidy up sandbox handling in test-main
  kconfig: Add a configuration file for nospl
  kconfig: Refactor code into separate writer functions
  kconfig: Support writing separate SPL files
  Rename CONFIG_TEXT_BASE
  x86: Fix up some Kconfig options
  Add VPL options for BLOBLIST
  omap: Correct an SPL build error with watchdog
  freescale: pm9g45: Fix problems with ls1021aqds_nand et al
  imx: watchdog: Correct watchdog error condition
  socfpga: Use the correct condition for SYS_L2_PL310
  rockchip: Avoid checking environment without ENV_SUPPORT
  freescale: Drop old pre-DM_ETH code
  imx: Use SATA instead of CMD_SATA
  net: Add an SPL config for atheros
  freescale: Fix odd use of ESDHCI_QUIRK_BROKEN_TIMEOUT_VALUE
  serial: Support ns16550 driver in TPL
  pci: Use the correct symbol to enable struct members
  x86: Fix monitor base for split config
  dm: Add a TPL symbol for simple-bus
  x86: coral: Avoid build errors with missing SPL symbols
  power: wanderboard: Correct conditions for split config
  venice: Simplify conditions for network init
  Allow distroboot environment to be the same in SPL
  command: Don't allow commands in SPL
  Makefile: Include the config for the phase being built
  Makefile: Use empty SPL_ and SPL_TPL_ vars
  kconfig: Drop single-param use of CONFIG_IS_ENABLED()
  kconfig: Adjust the meaning of CONFIG_IS_ENABLED()
  kconfig: Drop CONFIG_IF_ENABLED_INT()
  kconfig: Drop CONFIG_IS_ENABLED()
  kconfig: drop config_opt_enabled()
  kconfig: Drop CONFIG_VAL()
  Makefile: Clean up an unnecessary Makefile piece
  fixdep: Drop support for CONFIG_IS_ENABLED and CONFIG_VAL
  kconfig: Move closer to the Linux version
  checkpatch: Remove unwanted CONFIG_IS_ENABLED rules
  Makefile: Drop SPL_ and SPL_TPL_ macros

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 arch/x86/include/asm/arch-apollolake/pmc.h    |   2 +-
 arch/x86/include/asm/arch-apollolake/uart.h   |   2 +-
 arch/x86/include/asm/byteorder.h              |   2 +-
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 .../puma_rk3399/puma-rk3399.c                 |   2 +-
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 cmd/i2c.c                                     | 106 ++--
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 lib/efi/efi_app.c                             |   2 +-
 lib/efi/efi_stub.c                            |  10 +-
 lib/efi_loader/Kconfig                        |   8 +
 lib/efi_loader/efi_conformance.c              |   2 +-
 lib/efi_loader/efi_console.c                  |   4 +-
 lib/efi_loader/efi_device_path.c              |   2 +-
 lib/efi_loader/efi_disk.c                     |   2 +-
 lib/efi_loader/efi_root_node.c                |   4 +-
 lib/efi_loader/efi_runtime.c                  |   8 +-
 lib/efi_selftest/efi_selftest_ecpt.c          |   2 +-
 lib/fdtdec.c                                  |  28 +-
 lib/hang.c                                    |   4 +-
 lib/hashtable.c                               |   2 +-
 lib/hexdump.c                                 |   2 +-
 lib/image-sparse.c                            |   2 +-
 lib/libfdt/Makefile                           |   2 +-
 lib/lmb.c                                     |   4 +-
 lib/panic.c                                   |   2 +-
 lib/rsa/Makefile                              |   4 +-
 lib/rsa/rsa-sign.c                            |   2 +-
 lib/rsa/rsa-verify.c                          |  10 +-
 lib/semihosting.c                             |   2 +-
 lib/string.c                                  |   2 +-
 lib/time.c                                    |   2 +-
 lib/tiny-printf.c                             |   6 +-
 lib/trace.c                                   |   2 +-
 lib/vsprintf.c                                |   8 +-
 net/Kconfig                                   |   4 +
 net/Makefile                                  |   8 +-
 net/bootp.c                                   |   2 +-
 net/eth-uclass.c                              |   4 +-
 net/eth_common.c                              |   2 +-
 net/mdio-uclass.c                             |   4 +-
 net/tftp.c                                    |   3 +-
 scripts/Kbuild.include                        |  16 -
 scripts/Makefile.autoconf                     |   8 +-
 scripts/Makefile.build                        |  12 +-
 scripts/Makefile.dts                          |   2 +-
 scripts/Makefile.spl                          |  66 +-
 scripts/basic/fixdep.c                        | 151 +++--
 scripts/checkpatch.pl                         |  16 -
 scripts/conf_nospl                            | 113 ++++
 scripts/kconfig/Makefile                      |   5 +-
 scripts/kconfig/conf.c                        |   6 +-
 scripts/kconfig/confdata.c                    | 405 +++++++++++-
 scripts/kconfig/expr.h                        |  28 +
 scripts/kconfig/lkc.h                         |   9 +
 scripts/kconfig/lkc_proto.h                   |  18 +-
 test/Kconfig                                  |   3 +
 test/Makefile                                 |  20 +-
 test/cmd_ut.c                                 |   2 +-
 test/dm/Makefile                              |   2 +-
 test/dm/clk_ccf.c                             |   4 +-
 test/dm/core.c                                |   2 +-
 test/dm/fastboot.c                            |   2 +-
 test/dm/of_platdata.c                         |   4 +-
 test/dm/ofnode.c                              |   2 +-
 test/dm/part.c                                |   2 +-
 test/dm/spi.c                                 |   2 +-
 test/fuzz/Makefile                            |   2 +-
 test/lib/Kconfig                              |  20 +-
 test/lib/kconfig.c                            |  21 +-
 test/lib/kconfig_spl.c                        |  16 +-
 test/print_ut.c                               |   4 +-
 test/py/tests/test_kconfig.py                 |   6 +-
 test/test-main.c                              |  26 +-
 test/unicode_ut.c                             |   4 +-
 tools/binman/test/generated/autoconf.h        |   4 +-
 tools/moveconfig.py                           | 594 +++++++++++++-----
 tools/patman/test_checkpatch.py               |   6 -
 1130 files changed, 4867 insertions(+), 3948 deletions(-)
 delete mode 100644 drivers/input/twl6030.c
 delete mode 100644 drivers/mtd/nand/raw/kb9202_nand.c
 create mode 100644 scripts/conf_nospl

-- 
2.39.1.581.gbfd45094c4-goog



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