| menu "U-Boot as UEFI application" | |
| depends on X86 | |
| config EFI_CLIENT | |
| bool "Support running U-Boot from EFI" | |
| depends on X86 | |
| imply X86_TSC_READ_BASE | |
| select EFI | |
| help | |
| U-Boot can be started from EFI on certain platforms. This allows | |
| EFI to perform most of the system init and then jump to U-Boot for | |
| final system boot. Another option is to run U-Boot as an EFI | |
| application, with U-Boot using EFI's drivers instead of its own. | |
| choice | |
| prompt "Select EFI mode to use" | |
| depends on X86 && EFI_CLIENT | |
| config EFI_APP | |
| bool "Support running as an EFI application" | |
| select CHARSET | |
| help | |
| Build U-Boot as an application which can be started from EFI. This | |
| is useful for examining a platform in the early stages of porting | |
| U-Boot to it. It allows only very basic functionality, such as a | |
| command prompt and memory and I/O functions. Use 'reset' to return | |
| to EFI. | |
| config EFI_STUB | |
| bool "Support running as an EFI payload" | |
| endchoice | |
| choice | |
| prompt "EFI app 32/64-bit selection" | |
| depends on EFI_APP | |
| help | |
| EFI does not support mixing 32-bit and 64-bit modes. This is a | |
| significant problem because it means that you must build a stub with | |
| the correct type for EFI to load it correctly. If you are using | |
| 32-bit EFI, select 32-bit here, else select 64-bit. Failure to do | |
| this may produce no error message - it just won't start! | |
| config EFI_APP_32BIT | |
| bool "Produce an app for running with 32-bit EFI" | |
| config EFI_APP_64BIT | |
| bool "Produce an app for running with 64-bit EFI" | |
| endchoice | |
| choice | |
| prompt "EFI stub 32/64-bit selection" | |
| depends on EFI_STUB | |
| help | |
| EFI does not support mixing 32-bit and 64-bit modes. This is a | |
| significant problem because it means that you must build a stub with | |
| the correct type for EFI to load it correctly. If you are using | |
| 32-bit EFI, select 32-bit here, else select 64-bit. Failure to do | |
| this may produce no error message - it just won't start! | |
| config EFI_STUB_32BIT | |
| bool "Produce a stub for running with 32-bit EFI" | |
| config EFI_STUB_64BIT | |
| bool "Produce a stub for running with 64-bit EFI" | |
| endchoice | |
| config EFI_RAM_SIZE | |
| hex "Amount of EFI RAM for U-Boot" | |
| depends on EFI_APP | |
| default 0x10000000 | |
| help | |
| Set the amount of EFI RAM which is claimed by U-Boot for its own | |
| use. U-Boot allocates this from EFI on start-up (along with a few | |
| other smaller amounts) and it can never be increased after that. | |
| It is used as the RAM size in with U-Boot. | |
| endmenu |