Hi Tom,
On Sat, Jan 14, 2023 at 03:49:36PM -0500, Tom Rini wrote:
> The event framework is just that, a framework. Enabling it by itself
> does nothing, so we shouldn't ask the user about it. Reword (and correct
> typos) around this the option and help text. This also applies to
> DM_EVENT, so reword as well.
>
> With this, it's time to address the larger problems. When functionality
> uses events, typically via EVENT_SPY, the appropriate framework then
> must be select'd and NOT imply'd. As the functionality will cease to
> work (and so, platforms will fail to boot) this is non-optional and
> where select is appropriate. Audit the current users of EVENT_SPY to
> have a more fine-grained approach to select'ing the framework where
> used.
>
> Cc: Simon Glass <[email protected]>
> Reported-by: Oliver Graute <[email protected]>
> Reported-by: Francesco Dolcini <[email protected]>
> Fixes: 7fe32b3442f0 ("event: Convert arch_cpu_init_dm() to use events")
> Fixes: 42fdcebf859f ("event: Convert misc_init_f() to use events")
> Signed-off-by: Tom Rini <[email protected]>
> ---
> arch/Kconfig | 6 +++---
> arch/arm/Kconfig | 9 ++++-----
> arch/arm/mach-omap2/Kconfig | 3 +++
> arch/mips/Kconfig | 2 +-
> arch/powerpc/cpu/mpc85xx/Kconfig | 1 +
> arch/x86/Kconfig | 1 +
> arch/x86/cpu/baytrail/Kconfig | 1 +
> arch/x86/cpu/broadwell/Kconfig | 1 +
> arch/x86/cpu/ivybridge/Kconfig | 1 +
> arch/x86/cpu/quark/Kconfig | 1 +
> board/google/Kconfig | 1 +
> board/keymile/Kconfig | 1 +
> boot/Kconfig | 1 +
> cmd/Kconfig | 1 +
> common/Kconfig | 17 ++++++++---------
> drivers/core/Kconfig | 9 +++++----
> drivers/cpu/Kconfig | 1 -
> lib/efi_loader/Kconfig | 5 ++---
> 18 files changed, 36 insertions(+), 26 deletions(-)
>
> diff --git a/arch/Kconfig b/arch/Kconfig
> index 8fb87b7d857c..d30676ae817b 100644
> --- a/arch/Kconfig
> +++ b/arch/Kconfig
> @@ -93,7 +93,7 @@ config NIOS2
> bool "Nios II architecture"
> select CPU
> select DM
> - imply DM_EVENT
> + select DM_EVENT
> select OF_CONTROL
> select SUPPORT_OF_CONTROL
> imply CMD_DM
> @@ -111,9 +111,9 @@ config RISCV
> select SUPPORT_OF_CONTROL
> select OF_CONTROL
> select DM
> + select DM_EVENT
> imply SPL_SEPARATE_BSS if SPL
> imply DM_SERIAL
> - imply DM_EVENT
> imply DM_MMC
> imply DM_SPI
> imply DM_SPI_FLASH
> @@ -136,6 +136,7 @@ config SANDBOX
> select BZIP2
> select CMD_POWEROFF
> select DM
> + select DM_EVENT
> select DM_FUZZING_ENGINE
> select DM_GPIO
> select DM_I2C
> @@ -240,7 +241,6 @@ config X86
> imply CMD_SF
> imply CMD_SF_TEST
> imply CMD_ZBOOT
> - imply DM_EVENT
> imply DM_GPIO
> imply DM_KEYBOARD
> imply DM_MMC
> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> index bbf1d5227b3f..c9a44ebc2213 100644
> --- a/arch/arm/Kconfig
> +++ b/arch/arm/Kconfig
> @@ -778,7 +778,6 @@ config ARCH_OMAP2PLUS
> select SUPPORT_SPL
> imply TI_SYSC if DM && OF_CONTROL
> imply FIT
> - imply DM_EVENT
> imply SPL_SEPARATE_BSS
>
> config ARCH_MESON
> @@ -823,11 +822,11 @@ config ARCH_IMX8
> select SYS_FSL_SEC_COMPAT_4
> select SYS_FSL_SEC_LE
> select DM
> + select DM_EVENT
> select GPIO_EXTRA_HEADER
> select MACH_IMX
> select OF_CONTROL
> select ENABLE_ARM_SOC_BOOT0_HOOK
> - imply DM_EVENT
>
> config ARCH_IMX8M
> bool "NXP i.MX8M platform"
> @@ -839,14 +838,15 @@ config ARCH_IMX8M
> select SYS_FSL_SEC_LE
> select SYS_I2C_MXC
> select DM
> + select DM_EVENT if CLK
> select SUPPORT_SPL
> imply CMD_DM
> - imply DM_EVENT
>
> config ARCH_IMX8ULP
> bool "NXP i.MX8ULP platform"
> select ARM64
> select DM
> + select DM_EVENT
> select MACH_IMX
> select OF_CONTROL
> select SUPPORT_SPL
> @@ -854,19 +854,18 @@ config ARCH_IMX8ULP
> select MISC
> select IMX_SENTINEL
> imply CMD_DM
> - imply DM_EVENT
>
> config ARCH_IMX9
> bool "NXP i.MX9 platform"
> select ARM64
> select DM
> + select DM_EVENT
> select MACH_IMX
> select SUPPORT_SPL
> select GPIO_EXTRA_HEADER
> select MISC
> select IMX_SENTINEL
> imply CMD_DM
> - imply DM_EVENT
>
> config ARCH_IMXRT
> bool "NXP i.MXRT platform"
> diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
> index 1db71df27212..309b967b0dd5 100644
> --- a/arch/arm/mach-omap2/Kconfig
> +++ b/arch/arm/mach-omap2/Kconfig
> @@ -31,6 +31,7 @@ config OMAP34XX
>
> config OMAP44XX
> bool "OMAP44XX SoC"
> + select DM_EVENT
> select SPL_USE_TINY_PRINTF
> select SPL_SYS_NO_VECTOR_TABLE if SPL
> imply NAND_OMAP_ELM
> @@ -55,6 +56,7 @@ config OMAP54XX
> bool "OMAP54XX SoC"
> select ARM_CORTEX_A15_CVE_2017_5715
> select ARM_ERRATA_798870
> + select DM_EVENT
> select SYS_THUMB_BUILD
> imply NAND_OMAP_ELM
> imply NAND_OMAP_GPMC
> @@ -111,6 +113,7 @@ config AM43XX
> config AM33XX
> bool "AM33XX SoC"
> select ARM_CORTEX_A8_CVE_2017_5715
> + select DM_EVENT
> select SPECIFY_CONSOLE_INDEX
> imply NAND_OMAP_ELM
> imply NAND_OMAP_GPMC
> diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
> index 23142bd2700d..569f5f48bc6c 100644
> --- a/arch/mips/Kconfig
> +++ b/arch/mips/Kconfig
> @@ -121,6 +121,7 @@ config MACH_PIC32
> bool "Support Microchip PIC32"
> select HAS_FIXED_TIMER_FREQUENCY
> select DM
> + select DM_EVENT
> select OF_CONTROL
> imply CMD_DM
>
> @@ -128,7 +129,6 @@ config TARGET_BOSTON
> bool "Support Boston"
> select HAS_FIXED_TIMER_FREQUENCY
> select DM
> - imply DM_EVENT
> select DM_SERIAL
> select MIPS_CM
> select SYS_CACHE_SHIFT_6
> diff --git a/arch/powerpc/cpu/mpc85xx/Kconfig
> b/arch/powerpc/cpu/mpc85xx/Kconfig
> index 1b180481a483..2c54a9e2120f 100644
> --- a/arch/powerpc/cpu/mpc85xx/Kconfig
> +++ b/arch/powerpc/cpu/mpc85xx/Kconfig
> @@ -248,6 +248,7 @@ config TARGET_KMP204X
> config TARGET_KMCENT2
> bool "Support kmcent2"
> select VENDOR_KM
> + select EVENT
> select FSL_CORENET
> select SYS_DPAA_FMAN
> select SYS_DPAA_PME
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index 93f1c77be3f3..07be5cd05ec0 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -395,6 +395,7 @@ config FSP_VERSION1
>
> config FSP_VERSION2
> bool "FSP version 2.x"
> + select DM_EVENT
> help
> This covers versions 2.0 and 2.1. See here for details:
> https://github.com/IntelFsp/fsp/wiki
> diff --git a/arch/x86/cpu/baytrail/Kconfig b/arch/x86/cpu/baytrail/Kconfig
> index d2c3473d6abf..a8efea8a3413 100644
> --- a/arch/x86/cpu/baytrail/Kconfig
> +++ b/arch/x86/cpu/baytrail/Kconfig
> @@ -7,6 +7,7 @@ config INTEL_BAYTRAIL
> select HAVE_FSP
> select ARCH_MISC_INIT
> select CPU_INTEL_TURBO_NOT_PACKAGE_SCOPED
> + select DM_EVENT
> imply HAVE_INTEL_ME
> imply ENABLE_MRC_CACHE
> imply AHCI_PCI
> diff --git a/arch/x86/cpu/broadwell/Kconfig b/arch/x86/cpu/broadwell/Kconfig
> index 5b015c89d950..39deda364479 100644
> --- a/arch/x86/cpu/broadwell/Kconfig
> +++ b/arch/x86/cpu/broadwell/Kconfig
> @@ -6,6 +6,7 @@
> config INTEL_BROADWELL
> bool
> select CACHE_MRC_BIN
> + select DM_EVENT
> select ARCH_EARLY_INIT_R
> imply HAVE_INTEL_ME
> imply ENABLE_MRC_CACHE
> diff --git a/arch/x86/cpu/ivybridge/Kconfig b/arch/x86/cpu/ivybridge/Kconfig
> index be3ef5e5d8f8..704f145adf88 100644
> --- a/arch/x86/cpu/ivybridge/Kconfig
> +++ b/arch/x86/cpu/ivybridge/Kconfig
> @@ -8,6 +8,7 @@
> config NORTHBRIDGE_INTEL_IVYBRIDGE
> bool
> select CACHE_MRC_BIN if HAVE_MRC
> + select DM_EVENT
> imply HAVE_INTEL_ME
> imply ENABLE_MRC_CACHE
> imply AHCI_PCI
> diff --git a/arch/x86/cpu/quark/Kconfig b/arch/x86/cpu/quark/Kconfig
> index 61bb5792c868..0d4008a31f4c 100644
> --- a/arch/x86/cpu/quark/Kconfig
> +++ b/arch/x86/cpu/quark/Kconfig
> @@ -7,6 +7,7 @@ config INTEL_QUARK
> select HAVE_RMU
> select ARCH_EARLY_INIT_R
> select ARCH_MISC_INIT
> + select DM_EVENT
> imply ENABLE_MRC_CACHE
> imply ETH_DESIGNWARE
> imply ICH_SPI
> diff --git a/board/google/Kconfig b/board/google/Kconfig
> index 0474b4e69384..a0f1a6097641 100644
> --- a/board/google/Kconfig
> +++ b/board/google/Kconfig
> @@ -18,6 +18,7 @@ choice
> config TARGET_CHROMEBOOK_CORAL
> bool "Chromebook coral"
> select BIOSEMU
> + select EVENT
> help
> This is a range of Intel-based laptops released in 2018. They use an
> Intel Apollo Lake SoC. The design supports WiFi, 4GB to 16GB of
> diff --git a/board/keymile/Kconfig b/board/keymile/Kconfig
> index e5d7c80a869d..bf899d005c46 100644
> --- a/board/keymile/Kconfig
> +++ b/board/keymile/Kconfig
> @@ -124,6 +124,7 @@ config SYS_IVM_EEPROM_PAGE_LEN
>
> config PG_WCOM_UBOOT_UPDATE_SUPPORTED
> bool "Enable U-boot Field Fail-Safe Update Functionality"
> + select EVENT
> default n
> help
> Indicates that field fail-safe u-boot update is supported.
> diff --git a/boot/Kconfig b/boot/Kconfig
> index 30bc182fcd5c..725afd36a3b9 100644
> --- a/boot/Kconfig
> +++ b/boot/Kconfig
> @@ -474,6 +474,7 @@ config BOOTMETH_VBE
> depends on FIT
> default y
> select BOOTMETH_GLOBAL
> + select EVENT
> help
> Enables support for VBE boot. This is a standard boot method which
> supports selection of various firmware components, seleciton of an OS
> to
> diff --git a/cmd/Kconfig b/cmd/Kconfig
> index b2aefae9cb70..4fe2c75de256 100644
> --- a/cmd/Kconfig
> +++ b/cmd/Kconfig
> @@ -2622,6 +2622,7 @@ config CMD_DIAG
>
> config CMD_EVENT
> bool "event - Show information about events"
> + depends on EVENT
> default y if EVENT_DEBUG
> help
> This enables the 'event' command which provides information about
> diff --git a/common/Kconfig b/common/Kconfig
> index 73e3fe36573d..6f5aa4e53aae 100644
> --- a/common/Kconfig
> +++ b/common/Kconfig
> @@ -604,24 +604,23 @@ config CYCLIC_MAX_CPU_TIME_US
> endif # CYCLIC
>
> config EVENT
> - bool "General-purpose event-handling mechanism"
> - default y if SANDBOX
> + bool
> help
> - This enables sending and processing of events, to allow interested
> - parties to be alerted when something happens. This is an attempt to
> - stem the flow of weak functions, hooks, functions in board_f.c
> - and board_r.c and the Kconfig options below.
> + This adds a framework for general purpose sending and processing of
> + events, to allow interested parties to be alerted when something
> + happens. This is an attempt to stem the flow of weak functions,
> + hooks, functions in board_f.c and board_r.c and the Kconfig options
> + below.
>
> See doc/develop/event.rst for more information.
>
> if EVENT
>
> config EVENT_DYNAMIC
> - bool "Support event registration at runtime"
> - default y if SANDBOX
> + bool
> help
> Enable this to support adding an event spy at runtime, without adding
> - it to the EVENT_SPy() linker list. This increases code size slightly
> + it to the EVENT_SPY() linker list. This increases code size slightly
> but provides more flexibility for boards and subsystems that need it.
>
> config EVENT_DEBUG
> diff --git a/drivers/core/Kconfig b/drivers/core/Kconfig
> index 8fde77c23ee0..6fc8854b574b 100644
> --- a/drivers/core/Kconfig
> +++ b/drivers/core/Kconfig
> @@ -109,13 +109,14 @@ config DM_DEVICE_REMOVE
> causes USB host controllers to not be stopped when booting the OS.
>
> config DM_EVENT
> - bool "Support events with driver model"
> - depends on DM && EVENT
> - default y if SANDBOX
> + bool
> + depends on DM
> + select EVENT
> help
> This enables support for generating events related to driver model
> operations, such as prbing or removing a device. Subsystems can
> - register a 'spy' function that is called when the event occurs.
> + register a 'spy' function that is called when the event occurs. Such
> + subsystems must select this option.
>
> config SPL_DM_DEVICE_REMOVE
> bool "Support device removal in SPL"
> diff --git a/drivers/cpu/Kconfig b/drivers/cpu/Kconfig
> index 21874335c873..3bf04105e5e9 100644
> --- a/drivers/cpu/Kconfig
> +++ b/drivers/cpu/Kconfig
> @@ -23,7 +23,6 @@ config CPU_RISCV
> config CPU_MICROBLAZE
> bool "Enable Microblaze CPU driver"
> depends on CPU && MICROBLAZE
> - select EVENT
> select DM_EVENT
> select XILINX_MICROBLAZE0_PVR
> help
> diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig
> index b498c72206fd..d04203cddab4 100644
> --- a/lib/efi_loader/Kconfig
> +++ b/lib/efi_loader/Kconfig
> @@ -14,9 +14,8 @@ config EFI_LOADER
> depends on !EFI_APP
> default y if !ARM || SYS_CPU = armv7 || SYS_CPU = armv8
> select CHARSET
> - select DM_EVENT
> - select EVENT
> - select EVENT_DYNAMIC
> + select DM_EVENT if PARTITIONS
> + select EVENT_DYNAMIC if EVENT
Since UEFI subsystem, in particular efi_disk, uses event_register() or
EVENT_DYNAMIC directly, adding 'if EVENT' looks strange.
Instead, I suggest that 'select EVENT' be added to CONFIG_EVENT_DYNAMIC
and then we can safely
select EVENT_DYNAMIC if PARTITIONS
here.
-Takahiro Akashi
> select LIB_UUID
> imply PARTITION_UUIDS
> select REGEX
> --
> 2.25.1
>
