[U-Boot] [PATCH 14/14] x86: qemu: Add a config for 64-bit U-Boot

[Simon Glass]

On 18 January 2017 at 04:33, Bin Meng <bmeng.cn at gmail.com> wrote:
> 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 at gmail.com>
>
> ---
>
>  board/emulation/Kconfig              |  7 ++++
>  board/emulation/qemu-x86/Kconfig     |  2 +-
>  board/emulation/qemu-x86/MAINTAINERS |  7 ++++
>  configs/qemu-x86_64_defconfig        | 80 ++++++++++++++++++++++++++++++++++++
>  4 files changed, 95 insertions(+), 1 deletion(-)
>  create mode 100644 configs/qemu-x86_64_defconfig

Reviewed-by: Simon Glass <sjg at chromium.org>