u-boot/board/emulation/qemu-x86/Kconfig
Bin Meng bda40d5634 x86: qemu: Add a config for 64-bit U-Boot
Add a new board config which uses 64-bit U-Boot. Supported features
are the same as the other 64-bit board (Google Chromebook Link).
It is a start for us to test 64-bit U-Boot easily without the need
to access a real hardware.

Note CONFIG_SPL_ENV_SUPPORT is required for QEMU 64-bit as without
this the SPL build fails at the end. This is just a workaround as
CONFIG_SPL_ENV_SUPPORT is not needed at all.

common/built-in.o:(.data.env_htab+0xc): undefined reference to 'env_flags_validate'
lib/built-in.o: In function `hsearch_r':
lib/hashtable.c:380: undefined reference to 'env_callback_init'
lib/hashtable.c:382: undefined reference to 'env_flags_init'
make[1]: *** [spl/u-boot-spl] Error 1

Except those SPL options required by 64-bit, compared to 32-bit
config, the following options are different:

- CONFIG_SYS_MALLOC_F_LEN has to be increased to 0x1000 for SPL.
- CONFIG_DEBUG_UART has to be included due to the weird issue.
  See TODO comments in arch/x86/cpu/x86_64/cpu.c:arch_setup_gd().
  Once this issue gets fixed, debug uart can be optional.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-02-07 13:34:10 +08:00

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if TARGET_QEMU_X86 || TARGET_QEMU_X86_64
config SYS_BOARD
default "qemu-x86"
config SYS_VENDOR
default "emulation"
config SYS_SOC
default "qemu"
config SYS_CONFIG_NAME
default "qemu-x86"
config SYS_TEXT_BASE
default 0xfff00000 if !EFI_STUB && !SUPPORT_SPL
default 0x01110000 if EFI_STUB || SUPPORT_SPL
config BOARD_SPECIFIC_OPTIONS # dummy
def_bool y
select X86_RESET_VECTOR if !EFI_STUB
select QEMU
select BOARD_ROMSIZE_KB_1024
endif