four0four

Zynq BootROM Secrets: Exposing the bootROM with the UART loader

Last time I wrote about this, I lied a little - There is an interesting bug in the UART loader, and it may have been exactly why Xilinx didn't document it. In short: The UART loader writes the entire UART payload to a location in memory (nominally 0x4_0000). The ROM is architected such that when the boot mode is selected, it registers a callback that is called when the ROM wants more data from the boot device. For the UART loader, this is pretty simple - here's the whole thing:

; void uart_callback(u32 r0_offset, void* r1_dest, i32 r2_nbytes)
ROM:0000A578 PUSH            {R3,LR}
ROM:0000A57C MOV             R3, #uart_buff
ROM:0000A584 MOV             R12, #1
ROM:0000A588 LDR             R3, [R3]

shigenobuokamoto

[Unit]
Wants=network-pre.target
Before=network-pre.target shutdown.target

[Service]
User=root
ExecStart=/bin/sh -ec '\
  [ -x /usr/bin/wslinfo ] && [ "$(/usr/bin/wslinfo --networking-mode)" = "mirrored" ] || exit 0;\
  echo "\
  add chain   ip nat WSLPREROUTING { type nat hook prerouting priority dstnat - 1; policy accept; };\

nimpy

import numpy as np
def calculate_psnr(img1, img2, max_value=255):
    """"Calculating peak signal-to-noise ratio (PSNR) between two images."""
    mse = np.mean((np.array(img1, dtype=np.float32) - np.array(img2, dtype=np.float32)) ** 2)
    if mse == 0:
        return 100
    return 20 * np.log10(max_value / (np.sqrt(mse)))

zeljic

How to build SQLite3 .lib file on Windows 10

1. Download source from source

   For example: source https://www.sqlite.org/2023/sqlite-amalgamation-3430100.zip

2. Download binary from binary

   For example: binary https://www.sqlite.org/2023/sqlite-dll-win64-x64-3430100.zip

3. Extract both archives to the same directory

nhatnx

Need to do this in both php.ini files !!!

Attention Wamp/Wordpress/windows users. I had this issue for hours and not even the correct answer was doing it for me, because I was editing the wrong php.ini file because the question was answered to XAMPP and not for WAMP users, even though the question was for WAMP.

here's what I did

Download the certificate bundle.

Put it inside of C:\wamp64\bin\php\your php version\extras\ssl

jonlabelle

Async Await Best Practices Cheat Sheet

Summary of Asynchronous Programming Guidelines

Name	Description	Exceptions
Avoid async void	Prefer async Task methods over async void methods	Event handlers
Async all the way	Don't mix blocking and async code	Console main method
Configure context	Use ConfigureAwait(false) when you can	Methods that require con­text

natanfelles

# Location: /etc/nginx/sites-available/domain.tld.conf
server {
	listen 80;

	# listen 443 ssl;
	# include snippets/snakeoil.conf;

	root /var/www/domain.tld/public;

	index index.html index.php;

nyancodeid

Google Script CRUD

By Ryan Aunur Rassyid

Simply create RESTful API with Google Script and store it to Google SpreadSheet like a Pro.

Jekins

Руководство по оформлению Markdown файлов

Markdown - это облегчённый язык разметки, который преобразует текст в структурированный HTML. Следующее руководство поможет вам разобраться, как использовать Markdown.

Заголовки

# Заголовок первого уровня
## Заголовок второго уровня
### Заголовок третьего уровня
#### Заголовок четвёртого уровня
##### Заголовок пятого уровня

eashish93

vs Questions

---

1. http://stackoverflow.com/questions/804115 (rebase vs merge).
2. https://www.atlassian.com/git/tutorials/merging-vs-rebasing (rebase vs merge)
3. https://www.atlassian.com/git/tutorials/undoing-changes/ (reset vs checkout vs revert)
4. http://stackoverflow.com/questions/2221658 (HEAD^ vs HEAD~) (See git rev-parse)
5. http://stackoverflow.com/questions/292357 (pull vs fetch)
6. http://stackoverflow.com/questions/39651 (stash vs branch)
7. http://stackoverflow.com/questions/8358035 (reset vs checkout vs revert)