x86: Allow booting a kernel from the EFI app

[platform/kernel/u-boot.git] / arch / x86 / lib / bootm.c

diff --git a/arch/x86/lib/bootm.c b/arch/x86/lib/bootm.c
index 667e5e6..57cba5c 100644 (file)
--- a/arch/x86/lib/bootm.c
+++ b/arch/x86/lib/bootm.c
@@ -179,10 +179,14 @@ int boot_linux_kernel(ulong setup_base, ulong load_address, bool image_64bit)
                * U-Boot is setting them up that way for itself in
                * arch/i386/cpu/cpu.c.
                *
-               * Note that we cannot currently boot a kernel while running as
-               * an EFI application. Please use the payload option for that.
+               * Note: this is incomplete for EFI kernels!
+               *
+               * This can boot a kernel while running as an EFI application,
+               * but if the kernel requires EFI support then that support needs
+               * to be enabled first (see EFI_LOADER). Also the EFI information
+               * must enabled with setup_efi_info(). See setup_zimage() for
+               * how this is done with the stub.
                */
-#ifndef CONFIG_EFI_APP
                __asm__ __volatile__ (
                "movl $0, %%ebp\n"
                "cli\n"
@@ -191,7 +195,6 @@ int boot_linux_kernel(ulong setup_base, ulong load_address, bool image_64bit)
                [boot_params] "S"(setup_base),
                "b"(0), "D"(0)
                );
-#endif
        }
 
        /* We can't get to here */