Documentation/Platforms/OpenRISC: Difference between revisions
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OpenRISC is an open source processor architecture. While instruction sets like x86 are proprietary and owned by a single company, OpenRISC is free. Its main use is as a processor on an embedded system. | OpenRISC is an open source processor architecture. While instruction sets like x86 are proprietary and owned by a single company, OpenRISC is free. Its main use is as a processor on an embedded system. | ||
== | == Full system emulation == | ||
To boot linux you can run | To boot linux you can run the following. | ||
qemu-system-or1k -cpu or1200 -M or1k-sim -kernel $LINUX/vmlinux -serial stdio -nographic -monitor none | qemu-system-or1k -cpu or1200 -M or1k-sim -kernel $LINUX/vmlinux -serial stdio -nographic -monitor none | ||
== | == User mode emulation == | ||
Using | Using QEMU user mode emulation we can run and debug OpenRISC binaries on your host linux. | ||
$ cat main.c | $ cat main.c | ||
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== Links == | == Links == | ||
[https://www.youtube.com/watch?v=dYcxLHf0Ez4 Video introducing OpenRISC] | * [https://www.youtube.com/watch?v=dYcxLHf0Ez4 Video introducing OpenRISC] | ||
[http://openrisc.io/ The OpenRISC project site] | * [http://openrisc.io/ The OpenRISC project site] | ||
[https://github.com/openrisc/doc/blob/master/openrisc-arch-1.1-rev0.pdf?raw=true OpenRISC 1000 specification] | * [https://github.com/openrisc/doc/blob/master/openrisc-arch-1.1-rev0.pdf?raw=true OpenRISC 1000 specification] | ||
* [https://github.com/openrisc/or1k-gcc/releases GCC toolchain releases and binaries] | |||
== Contacts == | == Contacts == | ||
Maintainer: [mailto:proljc@gmail.com Jia Liu] | Maintainer: [mailto:proljc@gmail.com Jia Liu] | ||
Revision as of 12:23, 23 February 2017
Description
OpenRISC is an open source processor architecture. While instruction sets like x86 are proprietary and owned by a single company, OpenRISC is free. Its main use is as a processor on an embedded system.
Full system emulation
To boot linux you can run the following.
qemu-system-or1k -cpu or1200 -M or1k-sim -kernel $LINUX/vmlinux -serial stdio -nographic -monitor none
User mode emulation
Using QEMU user mode emulation we can run and debug OpenRISC binaries on your host linux.
$ cat main.c
#include <stdio.h>
int main() {
printf ("hello\n");
return 0;
}
$ or1k-linux-musl-gcc main.c
# Here $LDPATH/lib/ld-musl-or1k.so.1 is linked to or1k-linux-musl/lib/libc.so
$ qemu-or1k -L $LDPATH ./a.out
hello
Links
- Video introducing OpenRISC
- The OpenRISC project site
- OpenRISC 1000 specification
- GCC toolchain releases and binaries
Contacts
Maintainer: Jia Liu