marcan

#
# Automatically generated file; DO NOT EDIT.
# Linux/arm64 6.6.0 Kernel Configuration
#
CONFIG_CC_VERSION_TEXT="gcc (GCC) 13.2.1 20231011 (Red Hat 13.2.1-4)"
CONFIG_CC_IS_GCC=y
CONFIG_GCC_VERSION=130201
CONFIG_CLANG_VERSION=0
CONFIG_AS_IS_GNU=y
CONFIG_AS_VERSION=23900

marcan

import struct, time
## This experiment demonstrates that the claimed "hash" (that is not a hash) used
## by the L2 cache ECC debug feature used by Operation Triangulation is not secure,
## and can be trivially reverse engineered by anyone who owns one of the machines
## with the hardware (such as any M1 Mac), in seconds to days. Therefore, this proves
## that no "insider" access or leak is necessary to obtain this table, and that the
## attackers most likely did exactly the same thing.

## This is the "black box", i.e. the hardware: The table is not exposed to the caller.
class BlackBox:

marcan

ARM defines ACTLR_EL[321] as implementation defined.

Apple adds an IMPDEF ACTLR_EL12 as s3_6_c15_c14_6 and effectively implements VHE semantics. This does not seem to violate the architecture, since the register contents are IMPDEF anyway so nothing says they can't alias ACTLR_EL1 and ACTLR_EL2 together in EL2.

ACTLR_EL1 is trapped by HCR_EL2.TACR. It is also trapped by HACR_EL2<0> (which has all the controls for fine-grained Apple IMPDEF stuff).

In addition, AIDR_EL1 contains feature bits for Apple IMPDEF functionality. It is identical in EL1 and EL2 and is trapped by HCR_EL2.TID1 and HACR_EL2<4>.

TSO

marcan

0x000 1 isTiled
0x001 1 isTearingAllowed
0x002 1 isPremultiplied
0x003 4 planeCount
0x007 4 planeCount2
0x00b 4 pixelFormat
0x00f 4 YCbCrMatrix
0x013 1 transferFunctionIndex
        13 == SDR
        16 == HDR

marcan

Colorspaces

Tested with 10-bit mode on KDE on an M1 Pro.

• 12:
  • 10-bit mode: 0..1023
  • 8-bit mode: 0..255
  • Likely native primaries
    • Actually seems to be P3?

marcan

import tweepy, json, time, sys

auth = tweepy.OAuth1UserHandler(
    <api keys here>
)

api = tweepy.API(auth)

d = json.loads(open(sys.argv[1]).read().split("=", 1)[1])

marcan

#!/bin/sh
set -e

ROOT=remotes/origin

total=0
for i in $(git for-each-ref --format="%(refname:short)" refs/$ROOT/bits/); do
	name="${i##*/}"
	base=$ROOT/base
	if git rev-parse --verify "$ROOT/bases/$name" &>/dev/null; then

marcan

This is all preliminary and for experimentation only. You're on your own.

Make sure you're on asahi-dev and have your packages updated.

umount /boot/efi
mv /boot /boot.old
sed -i 's,/boot/efi,/boot,g' /etc/fstab
systemctl daemon-reload
mount /boot

marcan

Topology: VL822 hub + 4x ASM235CM (?) USB Gen2 - SATA bridges.

Tested with 4x WDC WD80EAZZ-00BKLB0 on an AMD X399 chipset.

~200MB/s from a single drive (this is about what the drive can do).

On a Gen1 port, I get ~400MB/s across all 4 drives. On a Gen2 port, ~800MB/s, give or take.

Power buttons power cycle the individual ASMedia controllers.

marcan

var katescript = {
    "author": "Hector Martin <marcan@marcan.st>",
    "license": "BSD",
    "revision": 1,
    "kate-version": "5.1",
    "functions": ["furiTool"],
    "actions": [
        {   "function": "furiTool",
            "name": "Insert Furigana",
            "category": "Quick Coding",