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| author | Stafford Horne <shorne@gmail.com> | 2021-03-05 06:07:47 +0900 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2021-04-13 09:41:45 +0200 |
| commit | c78a717d77e57f8ee9a120633046a455746042ef (patch) | |
| tree | 9781dce84e27373a22d27f6fa049f058819701ab /Documentation/boards | |
| parent | 5b537db03b3e73a8c1b465168d85b9cc3e045498 (diff) | |
| download | barebox-c78a717d77e57f8ee9a120633046a455746042ef.tar.gz barebox-c78a717d77e57f8ee9a120633046a455746042ef.tar.xz | |
Documentation: Add qemu instructions for OpenRISC
Most developers have qemu and rather not download and install the
or1ksim. Also, this adds details on how to get a openrisc toolchain.
Signed-off-by: Stafford Horne <shorne@gmail.com>
Link: https://lore.pengutronix.de/20210304210747.3679483-1-shorne@gmail.com
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'Documentation/boards')
| -rw-r--r-- | Documentation/boards/openrisc.rst | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/Documentation/boards/openrisc.rst b/Documentation/boards/openrisc.rst index f9d67f9650..34586b4a76 100644 --- a/Documentation/boards/openrisc.rst +++ b/Documentation/boards/openrisc.rst @@ -1,6 +1,74 @@ OpenRISC ======== +Optaining an OpenRISC toolchain +------------------------------- + +Toolchain binaries can be obtained from openrisc.io or our github releases page. +Instructions for building the different toolchains can be found on openrisc.io +or Stafford's toolchain build and release scripts. + +See: + + * https://github.com/stffrdhrn/gcc/releases + * https://github.com/stffrdhrn/or1k-toolchain-build + * https://openrisc.io/software + +Example of downloading and installing a toolchain:: + + $ curl --remote-name --location \ + https://github.com/stffrdhrn/gcc/releases/download/or1k-10.0.0-20190723/or1k-elf-10.0.0-20190723.tar.xz + $ tar -xf or1k-elf-10.0.0-20190723.tar.xz + $ export PATH=$PATH:$PWD/or1k-elf/bin + +Running OpenRISC barebox on qemu +------------------------------ + +Running barebox on qemu is similar to running linux on qemu see more details on +the qemu wiki site at https://wiki.qemu.org/Documentation/Platforms/OpenRISC + +Compile the qemu emulator:: + + $ git clone https://gitlab.com/qemu-project/qemu.git + $ cd qemu + $ mkdir build ; cd build + $ ../configure \ + --target-list="or1k-softmmu" \ + --enable-fdt \ + --disable-kvm \ + --disable-xen \ + --disable-xkbcommon \ + --enable-debug \ + --enable-debug-info + $ make + +Next compile barebox:: + + $ make ARCH=openrisc defconfig + ... + $ make ARCH=openrisc CROSS_COMPILE=or1k-elf- + +Run barebox:: + + $ <path to qemu source>/build/or1k-softmmu/qemu-system-or1k \ + -cpu or1200 \ + -M or1k-sim \ + -kernel /home/shorne/work/openrisc/barebox/barebox \ + -net nic -net tap,ifname=tap0,script=no,downscript=no \ + -serial mon:stdio -nographic -gdb tcp::10001 \ + -m 32 + + + barebox 2021.02.0-00120-g763c6fee7-dirty #14 Thu Mar 4 05:13:51 JST 2021 + + + Board: or1ksim + mdio_bus: miibus0: probed + malloc space: 0x01b80000 -> 0x01f7ffff (size 4 MiB) + + Hit any to stop autoboot: 3 + barebox@or1ksim:/ + or1ksim ------- |