On Mon, May 10, 2021, 11:59 PM Alistair Francis <alistair23@gmail.com>
wrote:

> On Tue, May 11, 2021 at 3:31 PM Alejandro Hernandez Samaniego
> <alejandro@enedino.org> wrote:
> >
> > Add support for MACHINE=qemuriscv64.
> >
> > $ runqemu nographic
> >
> > KERNEL:
> [tmp/deploy/images/qemuriscv64/baremetal-helloworld-image-qemuriscv64.bin]
> > MACHINE: [qemuriscv64]
> > FSTYPE: [bin]
> >

> runqemu - INFO - Running
> tmp/work/x86_64-linux/qemu-helper-native/1.0-r1/recipe-sysroot-native/usr/bin/qemu-system-riscv64
> >
> > Hello OpenEmbedded on RISC-V 64!
> >
> > Signed-off-by: Alejandro Enedino Hernandez Samaniego <
> alejandro@enedino.org>
> > ---
> >  .../baremetal-examples/baremetal-helloworld_git.bb |  5 +++--
> >  meta/classes/baremetal-image.bbclass               | 14 +++++++++++++-
> >  2 files changed, 16 insertions(+), 3 deletions(-)
> >
> > diff --git a/meta-skeleton/recipes-baremetal/baremetal-examples/
> baremetal-helloworld_git.bb
> b/meta-skeleton/recipes-baremetal/baremetal-examples/
> baremetal-helloworld_git.bb
> > index ee945c1ff0..19ef16988f 100644
> > --- a/meta-skeleton/recipes-baremetal/baremetal-examples/
> baremetal-helloworld_git.bb
> > +++ b/meta-skeleton/recipes-baremetal/baremetal-examples/
> baremetal-helloworld_git.bb
> > @@ -4,7 +4,7 @@ DESCRIPTION = "These are introductory examples to
> showcase the use of QEMU to ru
> >  LICENSE = "MIT"
> >  LIC_FILES_CHKSUM = "file://LICENSE;md5=39346640a23c701e4f459e05f56f4449"
> >
> > -SRCREV = "99f4fa4a3b266b42b52af302610b0f4f429ba5e3"
> > +SRCREV = "0bf9ea216e6f76be50726a3a74e527b7bbb0ad93"
> >  PV = "0.1+git${SRCPV}"
> >
> >  SRC_URI = "git://
> github.com/aehs29/baremetal-helloqemu.git;protocol=https;branch=master"
> > @@ -28,12 +28,13 @@ inherit baremetal-image
> >  # machine that QEMU uses on OE, e.g. -machine virt -cpu cortex-a57
> >  # but the examples can also be run on other architectures/machines
> >  # such as vexpress-a15 by overriding the setting on the machine.conf
> > -COMPATIBLE_MACHINE = "qemuarmv5|qemuarm|qemuarm64"
> > +COMPATIBLE_MACHINE = "qemuarmv5|qemuarm|qemuarm64|qemuriscv64"
> >
> >  BAREMETAL_QEMUARCH ?= ""
> >  BAREMETAL_QEMUARCH_qemuarmv5 = "versatile"
> >  BAREMETAL_QEMUARCH_qemuarm = "arm"
> >  BAREMETAL_QEMUARCH_qemuarm64 = "aarch64"
> > +BAREMETAL_QEMUARCH_qemuriscv64 = "riscv64"
> >
> >  EXTRA_OEMAKE_append = " QEMUARCH=${BAREMETAL_QEMUARCH} V=1"
> >
> > diff --git a/meta/classes/baremetal-image.bbclass
> b/meta/classes/baremetal-image.bbclass
> > index b0f5e885b5..319b61c7cd 100644
> > --- a/meta/classes/baremetal-image.bbclass
> > +++ b/meta/classes/baremetal-image.bbclass
> > @@ -73,7 +73,19 @@ QB_DEFAULT_KERNEL ?= "${IMAGE_LINK_NAME}.bin"
> >  QB_MEM ?= "-m 256"
> >  QB_DEFAULT_FSTYPE ?= "bin"
> >  QB_DTB ?= ""
> > -QB_OPT_APPEND = "-nographic"
> > +QB_OPT_APPEND_append = " -nographic"
> > +
> > +# RISC-V tunes set the BIOS, unset, and instruct QEMU to
> > +# ignore the BIOS and boot from -kernel
> > +QB_DEFAULT_BIOS_qemuriscv64 = ""
> > +QB_OPT_APPEND_append_qemuriscv64 = " -bios none"
>
> Sorry, I forgot to reply to the other thread.
>
> Can't you just set QB_DEFAULT_BIOS to "none"?
>
> Alistair


> > +


No problem, and nope, runqemu will behave the same way (doesn't pass -bios
at all) if QB_DEFAULT_BIOS is either set to an empty string or "none" which
means passing QB_OPT_APPEND is still required

> +
> > +# Use the medium-any code model for the RISC-V 64 bit implementation,
> > +# since medlow can only access addresses below 0x80000000 and RAM
> > +# starts at 0x80000000 on RISC-V 64
> > +CFLAGS_append_qemuriscv64 = " -mcmodel=medany"
> > +
> >
> >  # This next part is necessary to trick the build system into thinking
> >  # its building an image recipe so it generates the qemuboot.conf
> > --
> > 2.25.1
> >
> >
> > 
> >
>