linux/drivers/firmware/efi/libstub/gop.c

// SPDX-License-Identifier: GPL-2.0
/* -----------------------------------------------------------------------
 *
 *   Copyright 2011 Intel Corporation; author Matt Fleming
 *
 * ----------------------------------------------------------------------- */

#include <linux/bitops.h>
#include <linux/ctype.h>
#include <linux/efi.h>
#include <linux/screen_info.h>
#include <linux/string.h>
#include <asm/efi.h>
#include <asm/setup.h>

#include "efistub.h"

enum efi_cmdline_option { … };

static struct { … } cmdline = …;

static bool parse_modenum(char *option, char **next)
{ … }

static bool parse_res(char *option, char **next)
{ … }

static bool parse_auto(char *option, char **next)
{ … }

static bool parse_list(char *option, char **next)
{ … }

void efi_parse_option_graphics(char *option)
{ … }

static u32 choose_mode_modenum(efi_graphics_output_protocol_t *gop)
{ … }

static u8 pixel_bpp(int pixel_format, efi_pixel_bitmask_t pixel_info)
{ … }

static u32 choose_mode_res(efi_graphics_output_protocol_t *gop)
{ … }

static u32 choose_mode_auto(efi_graphics_output_protocol_t *gop)
{ … }

static u32 choose_mode_list(efi_graphics_output_protocol_t *gop)
{ … }

static void set_mode(efi_graphics_output_protocol_t *gop)
{ … }

static void find_bits(u32 mask, u8 *pos, u8 *size)
{ … }

static void
setup_pixel_info(struct screen_info *si, u32 pixels_per_scan_line,
		 efi_pixel_bitmask_t pixel_info, int pixel_format)
{ … }

static efi_graphics_output_protocol_t *
find_gop(efi_guid_t *proto, unsigned long size, void **handles)
{ … }

static efi_status_t setup_gop(struct screen_info *si, efi_guid_t *proto,
			      unsigned long size, void **handles)
{ … }

/*
 * See if we have Graphics Output Protocol
 */
efi_status_t efi_setup_gop(struct screen_info *si, efi_guid_t *proto,
			   unsigned long size)
{ … }