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Parse ACPI Tables for Hardware Discovery

hard4/8

Create Simple UEFI Application that Prints Hello World Use PCI BIOS Functions for Device Enumeration

Language

Compiler

2.0s Limit 256MB

Implementation

Implement ACPI table parsing in C.

Requirements:

Define ACPI table header structure
Implement find_rsdp() that searches memory
Implement verify_checksum()
Implement parse_rsdt() that iterates table pointers
Print all table signatures found
Show FACP fixed register locations
Show APIC MADT structure concept
Handle both RSDT and XSDT
Print table addresses and lengths

Why This Matters

The Linux kernel's `acpidump`/`acpica` code and the FreeBSD ACPI-CA subsystem parse tables the exact way you do here: find RSDP, verify its checksum, walk the RSDT/XSDT, and match FACP/APIC/MCFG signatures. A single bit flipped in a vendor's DSDT or a bad checksum is a real-world cause of laptops that won't suspend/resume correctly, which is why Linux ships ACPI table override quirks per-vendor.

Hints

0 / 3 revealed

Validation Suite

main.c

Workspace 1.0