1 menu "U-Boot as UEFI application"
5 bool "Support running U-Boot from EFI"
7 imply X86_TSC_READ_BASE
9 U-Boot can be started from EFI on certain platforms. This allows
10 EFI to perform most of the system init and then jump to U-Boot for
11 final system boot. Another option is to run U-Boot as an EFI
12 application, with U-Boot using EFI's drivers instead of its own.
15 prompt "Select EFI mode to use"
19 bool "Support running as an EFI application"
22 Build U-Boot as an application which can be started from EFI. This
23 is useful for examining a platform in the early stages of porting
24 U-Boot to it. It allows only very basic functionality, such as a
25 command prompt and memory and I/O functions. Use 'reset' to return
29 bool "Support running as an EFI payload"
34 prompt "EFI app 32/64-bit selection"
37 EFI does not support mixing 32-bit and 64-bit modes. This is a
38 significant problem because it means that you must build a stub with
39 the correct type for EFI to load it correctly. If you are using
40 32-bit EFI, select 32-bit here, else select 64-bit. Failure to do
41 this may produce no error message - it just won't start!
44 bool "Produce an app for running with 32-bit EFI"
47 bool "Produce an app for running with 64-bit EFI"
52 prompt "EFI stub 32/64-bit selection"
55 EFI does not support mixing 32-bit and 64-bit modes. This is a
56 significant problem because it means that you must build a stub with
57 the correct type for EFI to load it correctly. If you are using
58 32-bit EFI, select 32-bit here, else select 64-bit. Failure to do
59 this may produce no error message - it just won't start!
62 bool "Produce a stub for running with 32-bit EFI"
65 bool "Produce a stub for running with 64-bit EFI"
70 hex "Amount of EFI RAM for U-Boot"
74 Set the amount of EFI RAM which is claimed by U-Boot for its own
75 use. U-Boot allocates this from EFI on start-up (along with a few
76 other smaller amounts) and it can never be increased after that.
77 It is used as the RAM size in with U-Boot.