7477fe4d9b
In some cases this function may be provided outside the library, e.g. by a Rust main program. Add a Kconfig to control this and refactor the code so that it is optional. Signed-off-by: Simon Glass <simon.glass@canonical.com>
107 lines
3.1 KiB
Plaintext
107 lines
3.1 KiB
Plaintext
menu "U-Boot as UEFI application"
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depends on X86 || ARM
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config EFI_CLIENT
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bool "Support running U-Boot from EFI"
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depends on X86 || ARM
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imply DISPLAY_BOARDINFO
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imply X86_TSC_READ_BASE
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select EFI
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help
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U-Boot can be started from EFI on certain platforms. This allows
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EFI to perform most of the system init and then jump to U-Boot for
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final system boot. Another option is to run U-Boot as an EFI
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application, with U-Boot using EFI's drivers instead of its own.
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choice
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prompt "Select EFI mode to use"
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depends on EFI_CLIENT
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config EFI_APP
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bool "Support running as an EFI application"
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depends on X86 || ARM
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select CHARSET
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select EVENT
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imply CONSOLE_MUX
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imply CONSOLE_PAGER
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help
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Build U-Boot as an application which can be started from EFI. This
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is useful for examining a platform in the early stages of porting
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U-Boot to it. It allows only very basic functionality, such as a
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command prompt and memory and I/O functions. Use 'reset' to return
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to EFI.
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config EFI_STUB
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select POSITION_INDEPENDENT if ARM
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bool "Support running as an EFI payload"
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endchoice
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choice
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prompt "EFI app 32/64-bit selection"
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depends on EFI_APP
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help
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EFI does not support mixing 32-bit and 64-bit modes. This is a
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significant problem because it means that you must build a stub with
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the correct type for EFI to load it correctly. If you are using
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32-bit EFI, select 32-bit here, else select 64-bit. Failure to do
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this may produce no error message - it just won't start!
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config EFI_APP_32BIT
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bool "Produce an app for running with 32-bit EFI"
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config EFI_APP_64BIT
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bool "Produce an app for running with 64-bit EFI"
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endchoice
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choice
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prompt "EFI stub 32/64-bit selection"
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depends on EFI_STUB
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help
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EFI does not support mixing 32-bit and 64-bit modes. This is a
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significant problem because it means that you must build a stub with
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the correct type for EFI to load it correctly. If you are using
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32-bit EFI, select 32-bit here, else select 64-bit. Failure to do
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this may produce no error message - it just won't start!
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config EFI_STUB_32BIT
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depends on !ARM
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bool "Produce a stub for running with 32-bit EFI"
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config EFI_STUB_64BIT
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bool "Produce a stub for running with 64-bit EFI"
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endchoice
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if EFI_APP
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config EFI_RAM_SIZE
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hex "Amount of EFI RAM for U-Boot"
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default 0x10000000
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help
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Set the amount of EFI RAM which is claimed by U-Boot for its own
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use. U-Boot allocates this from EFI on start-up (along with a few
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other smaller amounts) and it can never be increased after that.
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It is used as the RAM size in with U-Boot.
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config EFI_APP_DEBUG
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bool "Enable GDB debugging"
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help
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Enable this to allow GDB to stop the app at an early stage, so it is
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possible to set the symbol offset. Since the app is relocated to an
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unknown address, breakpoints will only work if this is done.
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config EFI_APP_ENTRY
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bool "Provide efi_main() entry point"
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default y
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help
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Enable this to have libu-boot provide the efi_main() entry point
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function. This is the standard entry point called by EFI when loading
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the application. Disable this if you want to provide your own
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efi_main() implementation.
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endif # EFI_APP
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endmenu
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