early_init_d...r_elfcorehdr(9)

💖 early_init_dt_check_for_elfcorehdr — a lil' Kernel API Manual moment 💖

okay so bestie, welcome to the Kernel API Manual, and today's main character is early_init_dt_check_for_elfcorehdr. That name is lowkey a whole paragraph but we move 💅

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✨ NAME ✨

early_init_dt_check_for_elfcorehdr — Decode elfcorehdr location from flat tree 🎀

Like, it goes digging around in the flattened device tree to figure out where the elfcorehdr is at. iykyk ✨

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🦋 SYNOPSIS 🦋

void early_init_dt_check_for_elfcorehdr (unsigned long node );

no cap, that's the whole signature. she's void, she returns nothing, she just does 💅

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🌸 ARGUMENTS 🌸

• node — reference to the node containing the elfcorehdr location, and the node in question is 'chosen'. yes literally named 'chosen', she's the chosen one, main character energy fr fr 👑

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🌈 SEE ALSO 🌈

okay so here's the whole friend group 🫶 these are all in the Kernel file ./drivers/of/fdt.c:

• unflatten_dt_nodes(9)
• __unflatten_device_tree(9)
• of_fdt_unflatten_tree(9)
• early_init_fdt_scan_reserved_mem(9)
• early_init_fdt_reserve_self(9)
• of_scan_flat_dt(9)
• of_scan_flat_dt_subnodes(9)
• of_get_flat_dt_subnode_by_name(9)
• of_fdt_is_compatible(9)
• of_flat_dt_is_compatible(9)
• of_flat_dt_match_machine(9)
• early_init_dt_check_for_initrd(9)
• early_init_dt_check_for_usable_mem_range(9)
• early_init_dt_check_kho(9)
• unflatten_device_tree(9)
• unflatten_and_copy_device_tree(9)

like, the whole of_* squad plus their dt friends — obsessed honestly 💖

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bestie note: the source lives under ./drivers/of, this little icon dropped in October 2026, and the page is literally just the truncated early_init_d...r_elfcorehdr(9) again at the bottom. slay 💀✨

okay that's the page, go forth and decode those elfcorehdr locations, periodt 🧚💜