commit | c595fd5d7df62d8de2669b68365ee328f5afb068 | [log] [tgz] |
---|---|---|
author | Suraj Malhotra <surajmalhotra@google.com> | Thu Jun 28 16:17:34 2018 -0700 |
committer | Suraj Malhotra <surajmalhotra@google.com> | Fri Jun 29 09:52:39 2018 -0700 |
tree | 06d471cd84006963a7d91ccf043b6c586720e895 | |
parent | 8610264c0e20adefa76b45af68d55e770746ea29 [diff] |
[skip-block] Implement skip-block driver. The skip-block driver attaches to non-FTL managed nand partitions exposed by the nandpart driver. It allows for reading/writing at erase unit granularity. This greatly simplifies the API as there is no distinction between write and erase sizes, and therefore no need for garbage collection, or figuring out how to append pages to the end of a partially written block. The API interface to skip-block is IOCTL based, and expected to be used just by the paver utility. It should allow for updating of the ZIRCON-A/B/R partitions, SYSCONFIG, and other non-managed partitions. Change-Id: I4be682ae2e5c2ffa54bef27e1bcabf34bbcd795f Tested: TODO
Zircon is the core platform that powers the Fuchsia OS. Zircon is composed of a microkernel (source in kernel/...) as well as a small set of userspace services, drivers, and libraries (source in system/...) necessary for the system to boot, talk to hardware, load userspace processes and run them, etc. Fuchsia builds a much larger OS on top of this foundation.
The canonical Zircon Git repository is located at: https://fuchsia.googlesource.com/zircon
A read-only mirror of the code is present at: https://github.com/fuchsia-mirror/zircon
The Zircon Kernel provides syscalls to manage processes, threads, virtual memory, inter-process communication, waiting on object state changes, and locking (via futexes).
Currently there are some temporary syscalls that have been used for early bringup work, which will be going away in the future as the long term syscall API/ABI surface is finalized. The expectation is that there will be about 100 syscalls.
Zircon syscalls are generally non-blocking. The wait_one, wait_many port_wait and thread sleep being the notable exceptions.
This page is a non-comprehensive index of the zircon documentation.