set_firmware_width(9)

💅 set_firmware_width(9) — from the Kernel API Manual ✨

okay so bestie, welcome to set_firmware_width(9), a tiny little function from the Kernel API Manual that has exactly ONE job and honestly? she does it. no cap. 🎀

---

🌸 NAME 🌸

set_firmware_width — the vibe-check function that figures out whether the firmware is wide or narrow. that's it. that's the whole thing. 💖

---

✨ SYNOPSIS ✨

void set_firmware_width (void );

---

🦋 ARGUMENTS 🦋

• void — no arguments. she takes nothing, she needs nothing, she's lowkey self-sufficient like that. 🫶

---

🔥 DESCRIPTION 🔥

okay so here's the tea: you must call this function before any pdc_* function that uses the convert_to_wide function. like, not "it'd be nice if you did" — must. it's giving prerequisite energy. it's giving "read the syllabus before the exam." 📚✨

so if you're about to hit up a pdc_* function that leans on convert_to_wide, do this first, or the whole thing is gonna be a mess and not the cute kind. 😭

---

👑 SEE ALSO 👑

the Kernel file ./arch/parisc/kernel/firmware.c and honestly the entire extended friend group:

• f_extend(9)
• convert_to_wide(9)
• pdc_emergency_unlock(9)
• pdc_add_valid(9)
• pdc_instr(9)
• pdc_chassis_info(9)
• pdc_pat_chassis_send_log(9)
• pdc_chassis_disp(9)
• __pdc_cpu_rendezvous(9)
• pdc_cpu_rendezvous_lock(9)
• pdc_cpu_rendezvous_unlock(9)
• pdc_pat_get_PDC_entrypoint(9)
• pdc_chassis_warn(9)
• pdc_coproc_cfg(9)
• pdc_iodc_read(9)
• pdc_system_map_find_mods(9)
• pdc_system_map_find_addrs(9)
• pdc_model_info(9)
• pdc_model_sysmodel(9)
• pdc_model_versions(9)
• pdc_model_cpuid(9)
• pdc_model_capabilities(9)
• pdc_model_platform_info(9)
• pdc_cache_info(9)
• pdc_spaceid_bits(9)
• pdc_btlb_info(9)
• pdc_mem_map_hpa(9)
• pdc_lan_station_id(9)
• pdc_stable_read(9)
• pdc_stable_write(9)
• pdc_stable_get_size(9)
• pdc_stable_verify_contents(9)
• pdc_stable_initialize(9)
• pdc_get_initiator(9)
• pdc_pci_irt_size(9)
• pdc_pci_irt(9)
• pdc_pci_config_read(9)
• pdc_pci_config_write(9)
• pdc_tod_read(9)
• pdc_pim_toc11(9)
• pdc_pim_toc20(9)
• pdc_tod_set(9)
• pdc_iodc_print(9)
• pdc_iodc_getc(9)
• pdc_pat_cell_get_number(9)
• pdc_pat_cell_module(9)
• pdc_pat_cell_info(9)
• pdc_pat_cpu_get_number(9)
• pdc_pat_get_irt_size(9)
• pdc_pat_get_irt(9)
• pdc_pat_pd_get_addr_map(9)
• pdc_pat_pd_get_pdc_revisions(9)
• pdc_pat_pd_get_platform_counter(9)
• pdc_pat_io_pci_cfg_read(9)
• pdc_pat_io_pci_cfg_write(9)
• pdc_pat_mem_pdt_info(9)
• pdc_pat_mem_pdt_cell_info(9)
• pdc_pat_mem_read_cell_pdt(9)
• pdc_pat_mem_read_pd_pdt(9)
• pdc_pat_mem_get_dimm_phys_location(9)

like, that's the whole group chat right there. sixty whole icons. 💀✨

---

quick reminder bestie: set_firmware_width is a prerequisite — not optional, not a suggestion, not "if you feel like it." call it first. 🫡

---

okay that's the page!! sign-off time: this little beauty lives under ./arch/parisc/kernel, dated October 2026, and it's brought to you at version-free, pure-kernel-API energy. mwah 💋 slay, go call your firmware functions in the right order 🎀💜