1*867a6ac8SSimon Glassconfig EFI 2*867a6ac8SSimon Glass bool "Support running U-Boot from EFI" 3*867a6ac8SSimon Glass depends on X86 4*867a6ac8SSimon Glass help 5*867a6ac8SSimon Glass U-Boot can be started from EFI on certain platforms. This allows 6*867a6ac8SSimon Glass EFI to perform most of the system init and then jump to U-Boot for 7*867a6ac8SSimon Glass final system boot. Another option is to run U-Boot as an EFI 8*867a6ac8SSimon Glass application, with U-Boot using EFI's drivers instead of its own. 9*867a6ac8SSimon Glass 10*867a6ac8SSimon Glasschoice 11*867a6ac8SSimon Glass prompt "Select EFI mode to use" 12*867a6ac8SSimon Glass depends on X86 && EFI 13*867a6ac8SSimon Glass 14*867a6ac8SSimon Glassconfig EFI_APP 15*867a6ac8SSimon Glass bool "Support running as an EFI application" 16*867a6ac8SSimon Glass help 17*867a6ac8SSimon Glass Build U-Boot as an application which can be started from EFI. This 18*867a6ac8SSimon Glass is useful for examining a platform in the early stages of porting 19*867a6ac8SSimon Glass U-Boot to it. It allows only very basic functionality, such as a 20*867a6ac8SSimon Glass command prompt and memory and I/O functions. Use 'reset' to return 21*867a6ac8SSimon Glass to EFI. 22*867a6ac8SSimon Glass 23*867a6ac8SSimon Glassconfig EFI_RAM_SIZE 24*867a6ac8SSimon Glass hex "Amount of EFI RAM for U-Boot" 25*867a6ac8SSimon Glass depends on EFI_APP 26*867a6ac8SSimon Glass default 0x2000000 27*867a6ac8SSimon Glass help 28*867a6ac8SSimon Glass Set the amount of EFI RAM which is claimed by U-Boot for its own 29*867a6ac8SSimon Glass use. U-Boot allocates this from EFI on start-up (along with a few 30*867a6ac8SSimon Glass other smaller amounts) and it can never be increased after that. 31*867a6ac8SSimon Glass It is used as the RAM size in with U-Boot. 32*867a6ac8SSimon Glass 33*867a6ac8SSimon Glassendchoice 34