This option useful not only for development, but for the platforms where U-Boot is run from custom ROM bootloader. For example, Intel Edison is that board.
Make this option visible that platforms can select it if needed.
Signed-off-by: Andy Shevchenko andriy.shevchenko@linux.intel.com --- arch/x86/Kconfig | 4 ++++ arch/x86/cpu/start.S | 3 +-- 2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 0884af22a7..d75ad61d99 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -89,6 +89,10 @@ config X86_RESET_VECTOR bool default n
+config X86_LOAD_FROM_32_BIT + bool + default n + config RESET_SEG_START hex depends on X86_RESET_VECTOR diff --git a/arch/x86/cpu/start.S b/arch/x86/cpu/start.S index a5cba1cf2a..eb4ade6f8c 100644 --- a/arch/x86/cpu/start.S +++ b/arch/x86/cpu/start.S @@ -22,9 +22,8 @@ * Define this to boot U-Boot from a 32-bit program which sets the GDT * differently. This can be used to boot directly from any stage of coreboot, * for example, bypassing the normal payload-loading feature. - * This is only useful for development. */ -#undef LOAD_FROM_32_BIT +#define LOAD_FROM_32_BIT CONFIG_X86_LOAD_FROM_32_BIT
.section .text .code32