HI Heinrich,
On Thu, 30 Apr 2020 at 21:57, Heinrich Schuchardt xypron.glpk@gmx.de wrote:
Am May 1, 2020 3:21:45 AM UTC schrieb Simon Glass sjg@chromium.org:
Add a build for running 64-bit U-Boot from coreboot (which is 32-bit). This uses binman to create an image with a 32-bit SPL and a 64-bit U-Boot.
Coreboot boots into SPL and then SPL boots into U-Boot.
This allows running 64-bit EFI images on x86. Signed-off-by: Simon Glass sjg@chromium.org
Changes in v3: None Changes in v2: None
board/coreboot/coreboot/MAINTAINERS | 7 +++++ configs/coreboot64_defconfig | 48 +++++++++++++++++++++++++++++ doc/board/coreboot/coreboot.rst | 10 ++++++ 3 files changed, 65 insertions(+) create mode 100644 configs/coreboot64_defconfig
diff --git a/board/coreboot/coreboot/MAINTAINERS b/board/coreboot/coreboot/MAINTAINERS index 188906b080..a05673bb0b 100644 --- a/board/coreboot/coreboot/MAINTAINERS +++ b/board/coreboot/coreboot/MAINTAINERS @@ -4,3 +4,10 @@ S: Maintained F: board/coreboot/coreboot/ F: include/configs/chromebook_link.h F: configs/coreboot_defconfig
+COREBOOT64 BOARD +M: Simon Glass sjg@chromium.org +S: Maintained +F: board/coreboot/coreboot/ +F: include/configs/chromebook_link.h +F: configs/coreboot64_defconfig diff --git a/configs/coreboot64_defconfig b/configs/coreboot64_defconfig new file mode 100644 index 0000000000..80353b8eb3 --- /dev/null +++ b/configs/coreboot64_defconfig @@ -0,0 +1,48 @@ +CONFIG_X86=y +CONFIG_SYS_TEXT_BASE=0x1120000 +CONFIG_ENV_SIZE=0x1000 +CONFIG_NR_DRAM_BANKS=8 +CONFIG_PRE_CON_BUF_ADDR=0x100000 +CONFIG_X86_RUN_64BIT=y +CONFIG_VENDOR_COREBOOT=y +CONFIG_TARGET_COREBOOT=y +CONFIG_SPL_TEXT_BASE=0x1110000 +CONFIG_FIT=y +CONFIG_FIT_SIGNATURE=y +CONFIG_SHOW_BOOT_PROGRESS=y +CONFIG_USE_BOOTARGS=y +CONFIG_BOOTARGS="root=/dev/sdb3 init=/sbin/init rootwait ro"
Isn't this defconfig for a generic coreboot device? So why would you prescribe a boot partition which may not exist? And what should a non-Linux OS do with 'init='?
What do you suggest?
This matches the coreboot board and is the default boot device on one board that uses this.
Perhaps we should be finding out the bootdevice from coreboot? But in any case, people can add their own script.
Regards, Simon