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freebsd-dev/sys/mips/conf/AR71XX_BASE
Mark Murray d1b06863fb Huge cleanup of random(4) code. 
* GENERAL
- Update copyright.
- Make kernel options for RANDOM_YARROW and RANDOM_DUMMY. Set
  neither to ON, which means we want Fortuna
- If there is no 'device random' in the kernel, there will be NO
  random(4) device in the kernel, and the KERN_ARND sysctl will
  return nothing. With RANDOM_DUMMY there will be a random(4) that
  always blocks.
- Repair kern.arandom (KERN_ARND sysctl). The old version went
  through arc4random(9) and was a bit weird.
- Adjust arc4random stirring a bit - the existing code looks a little
  suspect.
- Fix the nasty pre- and post-read overloading by providing explictit
  functions to do these tasks.
- Redo read_random(9) so as to duplicate random(4)'s read internals.
  This makes it a first-class citizen rather than a hack.
- Move stuff out of locked regions when it does not need to be
  there.
- Trim RANDOM_DEBUG printfs. Some are excess to requirement, some
  behind boot verbose.
- Use SYSINIT to sequence the startup.
- Fix init/deinit sysctl stuff.
- Make relevant sysctls also tunables.
- Add different harvesting "styles" to allow for different requirements
  (direct, queue, fast).
- Add harvesting of FFS atime events. This needs to be checked for
  weighing down the FS code.
- Add harvesting of slab allocator events. This needs to be checked for
  weighing down the allocator code.
- Fix the random(9) manpage.
- Loadable modules are not present for now. These will be re-engineered
  when the dust settles.
- Use macros for locks.
- Fix comments.

* src/share/man/...
- Update the man pages.

* src/etc/...
- The startup/shutdown work is done in D2924.

* src/UPDATING
- Add UPDATING announcement.

* src/sys/dev/random/build.sh
- Add copyright.
- Add libz for unit tests.

* src/sys/dev/random/dummy.c
- Remove; no longer needed. Functionality incorporated into randomdev.*.

* live_entropy_sources.c live_entropy_sources.h
- Remove; content moved.
- move content to randomdev.[ch] and optimise.

* src/sys/dev/random/random_adaptors.c src/sys/dev/random/random_adaptors.h
- Remove; plugability is no longer used. Compile-time algorithm
  selection is the way to go.

* src/sys/dev/random/random_harvestq.c src/sys/dev/random/random_harvestq.h
- Add early (re)boot-time randomness caching.

* src/sys/dev/random/randomdev_soft.c src/sys/dev/random/randomdev_soft.h
- Remove; no longer needed.

* src/sys/dev/random/uint128.h
- Provide a fake uint128_t; if a real one ever arrived, we can use
  that instead. All that is needed here is N=0, N++, N==0, and some
  localised trickery is used to manufacture a 128-bit 0ULLL.

* src/sys/dev/random/unit_test.c src/sys/dev/random/unit_test.h
- Improve unit tests; previously the testing human needed clairvoyance;
  now the test will do a basic check of compressibility. Clairvoyant
  talent is still a good idea.
- This is still a long way off a proper unit test.

* src/sys/dev/random/fortuna.c src/sys/dev/random/fortuna.h
- Improve messy union to just uint128_t.
- Remove unneeded 'static struct fortuna_start_cache'.
- Tighten up up arithmetic.
- Provide a method to allow eternal junk to be introduced; harden
  it against blatant by compress/hashing.
- Assert that locks are held correctly.
- Fix the nasty pre- and post-read overloading by providing explictit
  functions to do these tasks.
- Turn into self-sufficient module (no longer requires randomdev_soft.[ch])

* src/sys/dev/random/yarrow.c src/sys/dev/random/yarrow.h
- Improve messy union to just uint128_t.
- Remove unneeded 'staic struct start_cache'.
- Tighten up up arithmetic.
- Provide a method to allow eternal junk to be introduced; harden
  it against blatant by compress/hashing.
- Assert that locks are held correctly.
- Fix the nasty pre- and post-read overloading by providing explictit
  functions to do these tasks.
- Turn into self-sufficient module (no longer requires randomdev_soft.[ch])
- Fix some magic numbers elsewhere used as FAST and SLOW.

Differential Revision: https://reviews.freebsd.org/D2025
Reviewed by: vsevolod,delphij,rwatson,trasz,jmg
Approved by: so (delphij)
2015-06-30 17:00:45 +00:00

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#
# AR71XX -- Kernel configuration file for FreeBSD/MIPS for Atheros 71xx systems
#
# This includes all the common drivers for the AR71XX boards along with
# the usb, net80211 and atheros driver code.
#
# $FreeBSD$
#
machine mips mips
ident AR71XX_BASE
cpu CPU_MIPS4KC
makeoptions KERNLOADADDR=0x80050000
options HZ=1000
options HWPMC_HOOKS
files "../atheros/files.ar71xx"
# For now, hints are per-board.
hints "AR71XX_BASE.hints"
makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols
# Build these as modules so small platform builds will have the
# modules already built.
makeoptions MODULES_OVERRIDE="gpio ar71xx if_gif if_gre if_bridge bridgestp usb wlan wlan_xauth wlan_acl wlan_wep wlan_tkip wlan_ccmp wlan_rssadapt wlan_amrr ath ath_pci"
# For small memory footprints
options VM_KMEM_SIZE_SCALE=1
options DDB
options KDB
options SCHED_4BSD #4BSD scheduler
options INET #InterNETworking
options INET6 # IPv6
# options NFSCL #Network Filesystem Client
options PSEUDOFS #Pseudo-filesystem framework
options _KPOSIX_PRIORITY_SCHEDULING #Posix P1003_1B real-time extensions
# options NFS_LEGACYRPC
# Debugging for use in -current
options INVARIANTS
options INVARIANT_SUPPORT
options WITNESS
options WITNESS_SKIPSPIN
options DEBUG_REDZONE
options DEBUG_MEMGUARD
options FFS #Berkeley Fast Filesystem
# options SOFTUPDATES #Enable FFS soft updates support
# options UFS_ACL #Support for access control lists
# options UFS_DIRHASH #Improve performance on big directories
# options MSDOSFS # Read MSDOS filesystems; useful for USB/CF
device pci
device ar71xx_pci
# 802.11 framework
options IEEE80211_DEBUG
options IEEE80211_ALQ
options IEEE80211_SUPPORT_MESH
options IEEE80211_SUPPORT_TDMA
options IEEE80211_AMPDU_AGE
device wlan # 802.11 support
device wlan_wep # 802.11 WEP support
device wlan_ccmp # 802.11 CCMP support
device wlan_tkip # 802.11 TKIP support
device wlan_xauth # 802.11 hostap support
# Atheros wireless NICs
device ath # Atheros interface support
device ath_pci # Atheros PCI/Cardbus bus
options ATH_DEBUG
options ATH_DIAGAPI
options ATH_ENABLE_11N
options AH_DEBUG
options AH_DEBUG_ALQ
options ALQ
device ath_hal
option AH_SUPPORT_AR5416
device ath_rate_sample
option AH_RXCFG_SDMAMW_4BYTES
option AH_AR5416_INTERRUPT_MITIGATION
# There's no DFS radar detection support yet so this won't actually
# detect radars. It however does enable the rest of the channel change
# machinery so DFS can be debugged.
option ATH_ENABLE_DFS
device mii
device arge
device usb
options USB_EHCI_BIG_ENDIAN_DESC # handle big-endian byte order
options USB_DEBUG
options USB_HOST_ALIGN=32 # AR71XX (MIPS in general?) requires this
device ehci
device scbus
device umass
device da
# On-board SPI flash
device spibus
device ar71xx_spi
device mx25l
device ar71xx_wdog
device uart
device uart_ar71xx
device ar71xx_apb
device loop
device ether
device md
device bpf
device random
device if_bridge
device gif # ip[46] in ip[46] tunneling protocol
device gre # generic encapsulation - only for IPv4 in IPv4 though atm
options ARGE_DEBUG # Enable if_arge debugging for now
# Enable GPIO
device gpio
device gpioled
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