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x86: qemu: Add a config for 64-bit U-Boot

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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>
This commit is contained in:
Bin Meng
2017-01-18 03:33:04 -08:00
parent 73d2de2b59
commit bda40d5634
4 changed files with 95 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
board/emulation/Kconfig
View File

@@ -18,6 +18,13 @@ config TARGET_QEMU_X86
supported by U-Boot. They are via QEMU '-M pc', an i440FX/PIIX
chipset platform and '-M q35', a Q35/ICH9 chipset platform.
config TARGET_QEMU_X86_64
bool "QEMU x86 64-bit"
help
This is the QEMU emulated x86 64-bit board. With this config
U-Boot is built as a 64-bit binary. This allows testing while
this feature is being completed.
endchoice
source "board/emulation/qemu-x86/Kconfig"

2
board/emulation/qemu-x86/Kconfig
View File

@@ -1,4 +1,4 @@
if TARGET_QEMU_X86
if TARGET_QEMU_X86 || TARGET_QEMU_X86_64
config SYS_BOARD
default "qemu-x86"

7
board/emulation/qemu-x86/MAINTAINERS
View File

@@ -6,3 +6,10 @@ F: include/configs/qemu-x86.h
F: configs/qemu-x86_defconfig
F: configs/qemu-x86_efi_payload32_defconfig
F: configs/qemu-x86_efi_payload64_defconfig
QEMU X86 64-bit BOARD
M: Bin Meng <bmeng.cn@gmail.com>
S: Maintained
F: board/emulation/qemu-x86/
F: include/configs/qemu-x86.h
F: configs/qemu-x86_64_defconfig