On 10/11/2018 03:53 AM, Bin Meng wrote: > Currently only 32-bit U-Boot for QEMU x86 is documented. Mention > the 64-bit support. > > Signed-off-by: Bin Meng <bmeng...@gmail.com> > --- > > doc/README.x86 | 8 ++++++-- > 1 file changed, 6 insertions(+), 2 deletions(-) > > diff --git a/doc/README.x86 b/doc/README.x86 > index 8cc4672..ab48466 100644 > --- a/doc/README.x86 > +++ b/doc/README.x86 > @@ -32,7 +32,7 @@ are supported: > - Link (Chromebook Pixel) > - Minnowboard MAX > - Samus (Chromebook Pixel 2015) > - - QEMU x86 > + - QEMU x86 (32-bit & 64-bit) > > As for loading an OS, U-Boot supports directly booting a 32-bit or 64-bit > Linux kernel as part of a FIT image. It also supports a compressed zImage. > @@ -376,7 +376,9 @@ QEMU x86 target instructions for bare mode: > > To build u-boot.rom for QEMU x86 targets, just simply run > > -$ make qemu-x86_defconfig > +$ make qemu-x86_defconfig (for 32-bit) > +or > +$ make qemu-x86_64_defconfig (for 64-bit) > $ make all
If your patch series creates a U-Boot usable with QEMU depends on the chosen CPU: This one seems to work: qemu-system-x86_64 -bios u-boot.rom -nographic -cpu core2duo This one fails (as expected): qemu-system-x86_64 -bios u-boot.rom --nographic -cpu pentium I could not get the emulation running without -nographic. Do you know why? The documentation above is insufficient. Please, provide a minimum QEMU command line which includes a CPU specification. I would prefer if you could specify two lines per bitness - one with kvm and one without, e.g. qemu-system-x86_64 -bios u-boot.rom -nographic -enable-kvm -cpu host qemu-system-x86_64 -bios u-boot.rom -nographic -cpu core2duo qemu-system-i386 -bios u-boot.rom -nographic -enable-kvm -cpu host qemu-system-i386 -bios u-boot.rom -nographic -cpu core2duo Best regards Heinrich > > Note this default configuration will build a U-Boot for the QEMU x86 i440FX > @@ -387,6 +389,8 @@ Device Tree Control ---> > ... > (qemu-x86_q35) Default Device Tree for DT control > > +To run 64-bit U-Boot, qemu-system-x86_64 should be used instead. > + > Test with coreboot > ------------------ > For testing U-Boot as the coreboot payload, there are things that need be > paid > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
