hw-bringup

hw-bringup is a command for Claude Code from Midstall/claude-for-hardware. It costs 12 tokens per session (381 once invoked), scanned A, original, Apache-2.0.

A command for diagnosing why bare-metal software, firmware, a bootloader, or an FPGA does not start on real hardware. It follows a checkpoint ladder that proves basic hardware and software stages in order.

In plain words
What is it for?
Use it during hardware bring-up to debug a new board or architecture, load and test an FPGA bitstream, or trace a firmware and bootloader handoff.
Why use it?
It replaces guesswork with concrete checks, starting with visible serial output and continuing through memory, traps, timers, address translation, interrupts, and handoffs.

Command for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Part of the claude-for-hardware plugin — 14 skills, 3 commands, 3 agents, 1 hook shipped together

Good fit Use it during hardware bring-up to debug a new board or architecture, load and test an FPGA bitstream, or trace a firmware and bootloader handoff.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/midstall/claude-for-hardware/hw-bringup
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/Midstall/claude-for-hardware

Made for: Claude Code.

Or install claude-for-hardware, the plugin that ships this one along with the rest of its 14 skills, 3 commands, 3 agents, 1 hook.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for hw-bringup

README.md
[![agentmods](https://agentmods.dev/badge/commands/midstall/claude-for-hardware/hw-bringup.svg)](https://agentmods.dev/commands/midstall/claude-for-hardware/hw-bringup)
Your own site
<a href="https://agentmods.dev/commands/midstall/claude-for-hardware/hw-bringup"><img src="https://agentmods.dev/badge/commands/midstall/claude-for-hardware/hw-bringup.svg" alt="Measured on agentmods" height="20"></a>
Per session 12 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 381 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00012 $0.00381
Opus 5 $0.00006 $0.00191
Sonnet 5 $0.00002 $0.00076
Haiku 4.5 $0.00001 $0.00038

Measured 8d ago against content hash f25905290343, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

hw-bringup scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

commands/hw-bringup.md · 21 lines

What it actually says

The user is bringing up bare-metal code, firmware, or an FPGA on real hardware and it will not come up. Context and symptom: $ARGUMENTS

Invoke the relevant skill for the situation: bare-metal-bringup for kernel/bare-metal on a new arch or board, fpga-bringup for loading and driving a bitstream over JTAG/GPIO, firmware-boot-chain for a firmware or bootloader handoff. Then drive the bring-up as a ladder, proving each rung before climbing:

  1. Get one known byte out a UART first. Until there is output, the rest is blind.
  2. Stack and BSS valid and correctly placed.
  3. Trap vectors installed and proven by a deliberate trap (mind part-specific vector alignment).
  4. Architectural timer init before any kernel timer that divides by its frequency.
  5. Address translation: identity-map then enable (watch for silent overlapping-PMP rejection).
  6. Interrupts: right enable model; pollers on a shared line must suppress.
  7. Userspace/syscalls: preserve exactly what the ABI promises.

For FPGA config: prove the transport first (IDCODE, IR width), read back DONE rather than trusting the shift, and confirm the bitstream clock is at or below real Fmax. For a boot chain: map the handoffs and find the failing arrow.

Localize the failing rung with evidence before proposing any fix. Treat "works in sim, dead on hardware" or "works in TCG, dies in KVM" as a real ordering or state-save bug, not a tooling quirk. Add a raw output byte at the suspect transition to bisect.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 21 lines · 12 tokens per session scan A f25905290343

Subscribe to this mod's changes

hw-bringup is a command published in the GitHub repository Midstall/claude-for-hardware (20 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 12 tokens to every session and 381 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.