^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* -----------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright 2011 Intel Corporation; author Matt Fleming
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * ----------------------------------------------------------------------- */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/ctype.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/efi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/screen_info.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <asm/efi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <asm/setup.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include "efistub.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) enum efi_cmdline_option {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) EFI_CMDLINE_NONE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) EFI_CMDLINE_MODE_NUM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) EFI_CMDLINE_RES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) EFI_CMDLINE_AUTO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) EFI_CMDLINE_LIST
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) static struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) enum efi_cmdline_option option;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) u32 mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) u32 width, height;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) int format;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) u8 depth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) } res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) } cmdline = { .option = EFI_CMDLINE_NONE };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static bool parse_modenum(char *option, char **next)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) u32 m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) if (!strstarts(option, "mode="))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) option += strlen("mode=");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) m = simple_strtoull(option, &option, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (*option && *option++ != ',')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) cmdline.option = EFI_CMDLINE_MODE_NUM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) cmdline.mode = m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) *next = option;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) static bool parse_res(char *option, char **next)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) u32 w, h, d = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) int pf = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) if (!isdigit(*option))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) w = simple_strtoull(option, &option, 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) if (*option++ != 'x' || !isdigit(*option))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) h = simple_strtoull(option, &option, 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) if (*option == '-') {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) option++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) if (strstarts(option, "rgb")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) option += strlen("rgb");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) pf = PIXEL_RGB_RESERVED_8BIT_PER_COLOR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) } else if (strstarts(option, "bgr")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) option += strlen("bgr");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) pf = PIXEL_BGR_RESERVED_8BIT_PER_COLOR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) } else if (isdigit(*option))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) d = simple_strtoull(option, &option, 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) if (*option && *option++ != ',')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) cmdline.option = EFI_CMDLINE_RES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) cmdline.res.width = w;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) cmdline.res.height = h;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) cmdline.res.format = pf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) cmdline.res.depth = d;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) *next = option;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) static bool parse_auto(char *option, char **next)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) if (!strstarts(option, "auto"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) option += strlen("auto");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) if (*option && *option++ != ',')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) cmdline.option = EFI_CMDLINE_AUTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) *next = option;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static bool parse_list(char *option, char **next)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) if (!strstarts(option, "list"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) option += strlen("list");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) if (*option && *option++ != ',')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) cmdline.option = EFI_CMDLINE_LIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) *next = option;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) void efi_parse_option_graphics(char *option)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) while (*option) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) if (parse_modenum(option, &option))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) if (parse_res(option, &option))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) if (parse_auto(option, &option))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) if (parse_list(option, &option))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) while (*option && *option++ != ',')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) static u32 choose_mode_modenum(efi_graphics_output_protocol_t *gop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) efi_status_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) efi_graphics_output_protocol_mode_t *mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) efi_graphics_output_mode_info_t *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) unsigned long info_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) u32 max_mode, cur_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) int pf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) mode = efi_table_attr(gop, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) cur_mode = efi_table_attr(mode, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (cmdline.mode == cur_mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) return cur_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) max_mode = efi_table_attr(mode, max_mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) if (cmdline.mode >= max_mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) efi_err("Requested mode is invalid\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) return cur_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) status = efi_call_proto(gop, query_mode, cmdline.mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) &info_size, &info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) if (status != EFI_SUCCESS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) efi_err("Couldn't get mode information\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) return cur_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) pf = info->pixel_format;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) efi_bs_call(free_pool, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) if (pf == PIXEL_BLT_ONLY || pf >= PIXEL_FORMAT_MAX) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) efi_err("Invalid PixelFormat\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) return cur_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) return cmdline.mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) static u8 pixel_bpp(int pixel_format, efi_pixel_bitmask_t pixel_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) if (pixel_format == PIXEL_BIT_MASK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) u32 mask = pixel_info.red_mask | pixel_info.green_mask |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) pixel_info.blue_mask | pixel_info.reserved_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) if (!mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) return __fls(mask) - __ffs(mask) + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) return 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) static u32 choose_mode_res(efi_graphics_output_protocol_t *gop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) efi_status_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) efi_graphics_output_protocol_mode_t *mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) efi_graphics_output_mode_info_t *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) unsigned long info_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) u32 max_mode, cur_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) int pf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) efi_pixel_bitmask_t pi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) u32 m, w, h;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) mode = efi_table_attr(gop, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) cur_mode = efi_table_attr(mode, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) info = efi_table_attr(mode, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) pf = info->pixel_format;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) pi = info->pixel_information;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) w = info->horizontal_resolution;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) h = info->vertical_resolution;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) if (w == cmdline.res.width && h == cmdline.res.height &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) (cmdline.res.format < 0 || cmdline.res.format == pf) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) (!cmdline.res.depth || cmdline.res.depth == pixel_bpp(pf, pi)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) return cur_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) max_mode = efi_table_attr(mode, max_mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) for (m = 0; m < max_mode; m++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) if (m == cur_mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) status = efi_call_proto(gop, query_mode, m,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) &info_size, &info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) if (status != EFI_SUCCESS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) pf = info->pixel_format;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) pi = info->pixel_information;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) w = info->horizontal_resolution;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) h = info->vertical_resolution;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) efi_bs_call(free_pool, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) if (pf == PIXEL_BLT_ONLY || pf >= PIXEL_FORMAT_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) if (w == cmdline.res.width && h == cmdline.res.height &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) (cmdline.res.format < 0 || cmdline.res.format == pf) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) (!cmdline.res.depth || cmdline.res.depth == pixel_bpp(pf, pi)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) return m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) efi_err("Couldn't find requested mode\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) return cur_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) static u32 choose_mode_auto(efi_graphics_output_protocol_t *gop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) efi_status_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) efi_graphics_output_protocol_mode_t *mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) efi_graphics_output_mode_info_t *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) unsigned long info_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) u32 max_mode, cur_mode, best_mode, area;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) u8 depth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) int pf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) efi_pixel_bitmask_t pi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) u32 m, w, h, a;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) u8 d;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) mode = efi_table_attr(gop, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) cur_mode = efi_table_attr(mode, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) max_mode = efi_table_attr(mode, max_mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) info = efi_table_attr(mode, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) pf = info->pixel_format;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) pi = info->pixel_information;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) w = info->horizontal_resolution;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) h = info->vertical_resolution;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) best_mode = cur_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) area = w * h;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) depth = pixel_bpp(pf, pi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) for (m = 0; m < max_mode; m++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) if (m == cur_mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) status = efi_call_proto(gop, query_mode, m,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) &info_size, &info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) if (status != EFI_SUCCESS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) pf = info->pixel_format;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) pi = info->pixel_information;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) w = info->horizontal_resolution;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) h = info->vertical_resolution;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) efi_bs_call(free_pool, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) if (pf == PIXEL_BLT_ONLY || pf >= PIXEL_FORMAT_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) a = w * h;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) if (a < area)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) d = pixel_bpp(pf, pi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) if (a > area || d > depth) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) best_mode = m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) area = a;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) depth = d;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) return best_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) static u32 choose_mode_list(efi_graphics_output_protocol_t *gop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) efi_status_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) efi_graphics_output_protocol_mode_t *mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) efi_graphics_output_mode_info_t *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) unsigned long info_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) u32 max_mode, cur_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) int pf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) efi_pixel_bitmask_t pi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) u32 m, w, h;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) u8 d;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) const char *dstr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) bool valid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) efi_input_key_t key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) mode = efi_table_attr(gop, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) cur_mode = efi_table_attr(mode, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) max_mode = efi_table_attr(mode, max_mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) efi_printk("Available graphics modes are 0-%u\n", max_mode-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) efi_puts(" * = current mode\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) " - = unusable mode\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) for (m = 0; m < max_mode; m++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) status = efi_call_proto(gop, query_mode, m,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) &info_size, &info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) if (status != EFI_SUCCESS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) pf = info->pixel_format;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) pi = info->pixel_information;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) w = info->horizontal_resolution;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) h = info->vertical_resolution;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) efi_bs_call(free_pool, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) valid = !(pf == PIXEL_BLT_ONLY || pf >= PIXEL_FORMAT_MAX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) d = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) switch (pf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) case PIXEL_RGB_RESERVED_8BIT_PER_COLOR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) dstr = "rgb";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) case PIXEL_BGR_RESERVED_8BIT_PER_COLOR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) dstr = "bgr";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) case PIXEL_BIT_MASK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) dstr = "";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) d = pixel_bpp(pf, pi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) case PIXEL_BLT_ONLY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) dstr = "blt";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) dstr = "xxx";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) efi_printk("Mode %3u %c%c: Resolution %ux%u-%s%.0hhu\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) m,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) m == cur_mode ? '*' : ' ',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) !valid ? '-' : ' ',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) w, h, dstr, d);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) efi_puts("\nPress any key to continue (or wait 10 seconds)\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) status = efi_wait_for_key(10 * EFI_USEC_PER_SEC, &key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) if (status != EFI_SUCCESS && status != EFI_TIMEOUT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) efi_err("Unable to read key, continuing in 10 seconds\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) efi_bs_call(stall, 10 * EFI_USEC_PER_SEC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) return cur_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) static void set_mode(efi_graphics_output_protocol_t *gop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) efi_graphics_output_protocol_mode_t *mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) u32 cur_mode, new_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) switch (cmdline.option) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) case EFI_CMDLINE_MODE_NUM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) new_mode = choose_mode_modenum(gop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) case EFI_CMDLINE_RES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) new_mode = choose_mode_res(gop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) case EFI_CMDLINE_AUTO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) new_mode = choose_mode_auto(gop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) case EFI_CMDLINE_LIST:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) new_mode = choose_mode_list(gop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) mode = efi_table_attr(gop, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) cur_mode = efi_table_attr(mode, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) if (new_mode == cur_mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) if (efi_call_proto(gop, set_mode, new_mode) != EFI_SUCCESS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) efi_err("Failed to set requested mode\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) static void find_bits(u32 mask, u8 *pos, u8 *size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) if (!mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) *pos = *size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) /* UEFI spec guarantees that the set bits are contiguous */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) *pos = __ffs(mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) *size = __fls(mask) - *pos + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) setup_pixel_info(struct screen_info *si, u32 pixels_per_scan_line,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) efi_pixel_bitmask_t pixel_info, int pixel_format)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) if (pixel_format == PIXEL_BIT_MASK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) find_bits(pixel_info.red_mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) &si->red_pos, &si->red_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) find_bits(pixel_info.green_mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) &si->green_pos, &si->green_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) find_bits(pixel_info.blue_mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) &si->blue_pos, &si->blue_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) find_bits(pixel_info.reserved_mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) &si->rsvd_pos, &si->rsvd_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) si->lfb_depth = si->red_size + si->green_size +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) si->blue_size + si->rsvd_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) si->lfb_linelength = (pixels_per_scan_line * si->lfb_depth) / 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) if (pixel_format == PIXEL_RGB_RESERVED_8BIT_PER_COLOR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) si->red_pos = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) si->blue_pos = 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) } else /* PIXEL_BGR_RESERVED_8BIT_PER_COLOR */ {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) si->blue_pos = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) si->red_pos = 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) si->green_pos = 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) si->rsvd_pos = 24;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) si->red_size = si->green_size =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) si->blue_size = si->rsvd_size = 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) si->lfb_depth = 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) si->lfb_linelength = pixels_per_scan_line * 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) static efi_graphics_output_protocol_t *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) find_gop(efi_guid_t *proto, unsigned long size, void **handles)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) efi_graphics_output_protocol_t *first_gop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) efi_handle_t h;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) first_gop = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) for_each_efi_handle(h, handles, size, i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) efi_status_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) efi_graphics_output_protocol_t *gop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) efi_graphics_output_protocol_mode_t *mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) efi_graphics_output_mode_info_t *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) efi_guid_t conout_proto = EFI_CONSOLE_OUT_DEVICE_GUID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) void *dummy = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) status = efi_bs_call(handle_protocol, h, proto, (void **)&gop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) if (status != EFI_SUCCESS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) mode = efi_table_attr(gop, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) info = efi_table_attr(mode, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) if (info->pixel_format == PIXEL_BLT_ONLY ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) info->pixel_format >= PIXEL_FORMAT_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) * Systems that use the UEFI Console Splitter may
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) * provide multiple GOP devices, not all of which are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) * backed by real hardware. The workaround is to search
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) * for a GOP implementing the ConOut protocol, and if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) * one isn't found, to just fall back to the first GOP.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) * Once we've found a GOP supporting ConOut,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) * don't bother looking any further.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) status = efi_bs_call(handle_protocol, h, &conout_proto, &dummy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) if (status == EFI_SUCCESS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) return gop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) if (!first_gop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) first_gop = gop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) return first_gop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) static efi_status_t setup_gop(struct screen_info *si, efi_guid_t *proto,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) unsigned long size, void **handles)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) efi_graphics_output_protocol_t *gop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) efi_graphics_output_protocol_mode_t *mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) efi_graphics_output_mode_info_t *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) gop = find_gop(proto, size, handles);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) /* Did we find any GOPs? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) if (!gop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) return EFI_NOT_FOUND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) /* Change mode if requested */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) set_mode(gop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) /* EFI framebuffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) mode = efi_table_attr(gop, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) info = efi_table_attr(mode, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) si->orig_video_isVGA = VIDEO_TYPE_EFI;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) si->lfb_width = info->horizontal_resolution;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) si->lfb_height = info->vertical_resolution;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) efi_set_u64_split(efi_table_attr(mode, frame_buffer_base),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) &si->lfb_base, &si->ext_lfb_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) if (si->ext_lfb_base)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) si->capabilities |= VIDEO_CAPABILITY_64BIT_BASE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) si->pages = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) setup_pixel_info(si, info->pixels_per_scan_line,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) info->pixel_information, info->pixel_format);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) si->lfb_size = si->lfb_linelength * si->lfb_height;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) si->capabilities |= VIDEO_CAPABILITY_SKIP_QUIRKS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) return EFI_SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) * See if we have Graphics Output Protocol
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) efi_status_t efi_setup_gop(struct screen_info *si, efi_guid_t *proto,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) unsigned long size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) efi_status_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) void **gop_handle = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) status = efi_bs_call(allocate_pool, EFI_LOADER_DATA, size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) (void **)&gop_handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) if (status != EFI_SUCCESS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) status = efi_bs_call(locate_handle, EFI_LOCATE_BY_PROTOCOL, proto, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) &size, gop_handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) if (status != EFI_SUCCESS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) goto free_handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) status = setup_gop(si, proto, size, gop_handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) free_handle:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) efi_bs_call(free_pool, gop_handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) }