ENUM DMUB_FW_BOOT_STATUS_BIT(9)

💅 enum dmub_fw_boot_status_bit(9) — the Kernel API Manual moment

okay bestie, so this is a page from the Kernel API Manual, and it's literally about enum dmub_fw_boot_status_bit — the enum bit definitions for SCRATCH0 ✨ Yes, SCRATCH0. It's giving "firmware boot status, but make it bit flags" and honestly? iconic.

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🌸 NAME 🌸

enum dmub_fw_boot_status_bit — Enum bit definitions for SCRATCH0. That's it, that's the whole vibe 🫶

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🎀 SYNOPSIS 🎀

enum dmub_fw_boot_status_bit {
    DMUB_FW_BOOT_STATUS_BIT_DAL_FIRMWARE ,
    DMUB_FW_BOOT_STATUS_BIT_MAILBOX_READY ,
    DMUB_FW_BOOT_STATUS_BIT_OPTIMIZED_INIT_DONE ,
    DMUB_FW_BOOT_STATUS_BIT_RESTORE_REQUIRED ,
    DMUB_FW_BOOT_STATUS_BIT_DEFERRED_LOADED ,
    DMUB_FW_BOOT_STATUS_BIT_FAMS_ENABLED ,
    DMUB_FW_BOOT_STATUS_BIT_DETECTION_REQUIRED ,
    DMUB_FW_BOOT_STATUS_BIT_HW_POWER_INIT_DONE ,
    DMUB_FW_BOOT_STATUS_BIT_ONO_REGIONS_ENABLED

};

like, look at it. nine bits. all of them just sitting there in a struct-shaped little outfit 🔥 no cap.

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💜 Constants 💜

so here's the thing, bestie — the manual is a little shy about these. every single one gets the same treatment:

• DMUB_FW_BOOT_STATUS_BIT_DAL_FIRMWARE — -- undescribed --
• DMUB_FW_BOOT_STATUS_BIT_MAILBOX_READY — -- undescribed --
• DMUB_FW_BOOT_STATUS_BIT_OPTIMIZED_INIT_DONE — -- undescribed --
• DMUB_FW_BOOT_STATUS_BIT_RESTORE_REQUIRED — -- undescribed --
• DMUB_FW_BOOT_STATUS_BIT_DEFERRED_LOADED — -- undescribed --
• DMUB_FW_BOOT_STATUS_BIT_FAMS_ENABLED — -- undescribed --
• DMUB_FW_BOOT_STATUS_BIT_DETECTION_REQUIRED — -- undescribed --
• DMUB_FW_BOOT_STATUS_BIT_HW_POWER_INIT_DONE — -- undescribed --
• DMUB_FW_BOOT_STATUS_BIT_ONO_REGIONS_ENABLED — -- undescribed --

yeah. all nine of them are literally just -- undescribed -- 😭 the docs said "no thoughts, head empty" and honestly we respect the honesty. i'm not gonna invent lore for them, that's not the move — the page says what the page says 💀

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🦋 SEE ALSO 🦋

this list is long long. like, main character energy for a cross-reference section. it all lives in the kernel file ./drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h, and here's every single friend it points at, in order, no skips:

• union dmub_addr(9)
• struct dmub_cursor_offload_pipe_data_dcn30_v1(9)
• struct dmub_cursor_offload_pipe_data_dcn401_v1(9)
• struct dmub_cursor_offload_pipe_data_dcn60_v1(9)
• struct dmub_cursor_offload_pipe_data_v1(9)
• struct dmub_cursor_offload_payload_data_v1(9)
• struct dmub_cursor_offload_stream_v1(9)
• struct dmub_cursor_offload_v1(9)
• union dmub_fw_meta_feature_bits(9)
• struct dmub_fw_meta_info(9)
• union dmub_fw_meta(9)
• struct dmcub_trace_buf_entry(9)
• union dmub_fw_boot_status(9)
• enum dmub_cursor_offload_comand_type(9)
• union dmub_fw_boot_options(9)
• enum dmub_shared_state_feature_id(9)
• struct dmub_shared_state_ips_fw(9)
• struct dmub_shared_state_ips_driver(9)
• struct dmub_shared_state_cursor_offload_v1(9)
• struct dmub_shared_state_feature_block(9)
• union dmub_gpint_data_register(9)
• enum dmub_out_cmd_type(9)
• struct dmub_cmd_header(9)
• struct dmub_rb_cmd_common(9)
• struct dmub_cmd_PLAT_54186_wa(9)
• struct dmub_rb_cmd_PLAT_54186_wa(9)
• enum dmub_cmd_mall_type(9)
• struct dmub_rb_cmd_mall(9)
• enum dmub_cmd_cab_type(9)
• struct dmub_rb_cmd_cab_for_ss(9)
• enum dmub_fams2_allow_delay_check_mode(9)
• enum dmub_cmd_idle_opt_type(9)
• struct dmub_rb_cmd_idle_opt_dcn_restore(9)
• struct dmub_dcn_notify_idle_cntl_data(9)
• struct dmub_rb_cmd_idle_opt_dcn_notify_idle(9)
• enum dmub_idle_opt_dc_power_state(9)
• struct dmub_idle_opt_set_dc_power_state_data(9)
• struct dmub_rb_cmd_idle_opt_set_dc_power_state(9)
• struct dmub_clocks(9)
• enum dmub_cmd_clk_mgr_type(9)
• struct dmub_rb_cmd_clk_mgr_notify_clocks(9)
• struct dmub_cmd_digx_encoder_control_data(9)
• struct dmub_rb_cmd_digx_encoder_control(9)
• struct dmub_cmd_set_pixel_clock_data(9)
• struct dmub_cmd_enable_disp_power_gating_data(9)
• struct dmub_rb_cmd_enable_disp_power_gating(9)
• struct dmub_dig_transmitter_control_data_v1_7(9)
• union dmub_cmd_dig1_transmitter_control_data(9)
• struct dmub_rb_cmd_dig1_transmitter_control(9)
• struct dmub_rb_cmd_domain_control_data(9)
• struct dmub_rb_cmd_domain_control(9)
• struct dmub_rb_cmd_dpphy_init(9)
• enum dp_aux_request_action(9)
• enum aux_return_code_type(9)
• enum aux_channel_type(9)
• struct aux_transaction_parameters(9)
• struct dmub_rb_cmd_hpd_sense_notify(9)
• enum dmub_phy_fsm_state(9)
• enum dmub_abm_ace_curve_type(9)
• enum dmub_abm_histogram_type(9)
• enum dmub_cmd_panel_cntl_type(9)
• struct dmub_cmd_panel_cntl_data(9)
• struct dmub_rb_cmd_panel_cntl(9)
• struct dmub_cmd_cable_id_input(9)
• struct dmub_cmd_cursor_offload_init_data(9)
• struct dmub_rb_cmd_cursor_offload_init(9)
• struct dmub_cmd_cursor_offload_stream_data(9)
• struct dmub_rb_cmd_cursor_offload_stream_cntl(9)
• union dmub_rb_cmd(9)
• union dmub_rb_out_cmd(9)
• struct dmub_rb_init_params(9)
• struct dmub_rb(9)

like… that's the whole friend group 💖 and yes, we're keeping every last one of them, iykyk.

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⭐ the cute sign-off ⭐

so the page footer situation is: it comes from ./drivers/gpu/drm/amd/display/... and it's dated October 2026, version-tagged as enum dmub_fw...t_status_bit(9). slay, past-future-whatever date, we love a timestamp with main character energy 👑 that's the whole page bestie — go forth and read SCRATCH0 with confidence 🌈💅