| config EFI |
| bool "Support running U-Boot from EFI" |
| depends on X86 |
| 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 |
| |
| config EFI_APP |
| bool "Support running as an EFI application" |
| 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 |
| |
| config EFI_RAM_SIZE |
| hex "Amount of EFI RAM for U-Boot" |
| depends on EFI_APP |
| default 0x2000000 |
| 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. |
| |
| choice |
| prompt "EFI 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 |
