etc:users:jcmvbkbc:linux-xtensa
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−Table of Contents
Linux port for Xtensa
Phase 1
Goal: linux mainline contains the latest linux-xtensa updates, builds and works.
- compilable with latest GCC
- overlays to cover: FSF, dc232b, more TBD
- tests to pass: builds, boots, LTP
- boards to focus on: ISS, ML605
- configurations: UP, linux-next specific, more TBD
Plan
- Prepare for linux-next participation
- [2/3] Make mainline build for ARCH=xtensa in defconfig, allnoconfig, allmodconfig
- [+] fix remaining issues with allmodconfig
- why there's no simdisk in the mainline?
- qemu needs proper handling for guest ioctls triggered via simcalls
- [+] Make built images work (qemu, FSF)
- [+] Build userspace
- Automated build/test scripts
- [+] build/test status/logs
- expect script to run LTP
- Analyse reference tree
- proper bugfixes
- new cores (dc233c, test_hifi_c3, s*)
- new platforms (lx*, ml605, s*)
- SMP and its fixes
- XCC fixes
Work items
SMP support
Support for Tensilica FPGA boards
Atomics (arch/xtensa/include/asm/atomic.h, bitops.h, spinlock.h) and check for S32C1I
TIE coprocessors
Highmem
Interrupt management
Medium level interrupts in less hacky way
Device trees support
MMU v3
ptrace (support latest GDB)
Support for building with XCC
simdisk
Various fixes made for debuggability
oprofile
Generic kernel_thread & friends
Cache aliasing aware mmap
etc/users/jcmvbkbc/linux-xtensa.1350820452.txt.gz · Last modified: 2012/10/21 15:54 by jcmvbkbc