| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| |
| #include <boot/coreboot_tables.h> |
| #include <console/console.h> |
| #include <elog.h> |
| #include <fsp/graphics.h> |
| #include <fsp/util.h> |
| #include <soc/intel/common/vbt.h> |
| #include <types.h> |
| #include <framebuffer_info.h> |
| |
| enum pixel_format { |
| pixel_rgbx_8bpc = 0, |
| pixel_bgrx_8bpc = 1, |
| pixel_bitmask = 2, /* defined by <rgb>_mask values */ |
| }; |
| |
| static const uint8_t fsp_graphics_info_guid[16] = { |
| 0xce, 0x2c, 0xf6, 0x39, 0x25, 0x68, 0x69, 0x46, |
| 0xbb, 0x56, 0x54, 0x1a, 0xba, 0x75, 0x3a, 0x07 |
| }; |
| |
| struct hob_graphics_info { |
| uint64_t framebuffer_base; |
| uint32_t framebuffer_size; |
| uint32_t version; |
| uint32_t horizontal_resolution; |
| uint32_t vertical_resolution; |
| uint32_t pixel_format; /* See enum pixel_format */ |
| uint32_t red_mask; |
| uint32_t green_mask; |
| uint32_t blue_mask; |
| uint32_t reserved_mask; |
| uint32_t pixels_per_scanline; |
| } __packed; |
| |
| struct pixel { |
| uint8_t pos; |
| uint8_t size; |
| }; |
| |
| static const struct fsp_framebuffer { |
| struct pixel red; |
| struct pixel green; |
| struct pixel blue; |
| struct pixel rsvd; |
| } fsp_framebuffer_format_map[] = { |
| [pixel_rgbx_8bpc] = { {0, 8}, {8, 8}, {16, 8}, {24, 8} }, |
| [pixel_bgrx_8bpc] = { {16, 8}, {8, 8}, {0, 8}, {24, 8} }, |
| }; |
| |
| enum fw_splash_screen_status { |
| FW_SPLASH_SCREEN_DISABLED, |
| FW_SPLASH_SCREEN_ENABLED, |
| }; |
| |
| /* Check and report if an external display is attached */ |
| __weak int fsp_soc_report_external_display(void) |
| { |
| /* Default implementation, on-board display enabled */ |
| return 0; |
| } |
| |
| /* |
| * Update elog with Firmware Splash Screen related information |
| * based on enum fw_splash_screen_status. |
| * |
| * Possible values for input argument are: |
| * TRUE - FSP initializes display when BMP_LOGO config is enabled. |
| * FALSE - Failed to initialize display although BMP_LOGO config is selected. |
| * |
| * Ignore if BMP_LOGO config is not selected. |
| */ |
| static void update_fw_splash_screen_event(enum fw_splash_screen_status status) |
| { |
| if (!CONFIG(BMP_LOGO)) |
| return; |
| |
| elog_add_event_byte(ELOG_TYPE_FW_SPLASH_SCREEN, status); |
| } |
| |
| void fsp_report_framebuffer_info(const uintptr_t framebuffer_bar, |
| enum lb_fb_orientation orientation) |
| { |
| size_t size; |
| const struct hob_graphics_info *ginfo; |
| const struct fsp_framebuffer *fbinfo; |
| |
| /* |
| * Pci enumeration happens after silicon init. |
| * After enumeration graphic framebuffer base may be relocated. |
| */ |
| if (!framebuffer_bar) { |
| printk(BIOS_ALERT, "Framebuffer BAR invalid\n"); |
| update_fw_splash_screen_event(FW_SPLASH_SCREEN_DISABLED); |
| return; |
| } |
| |
| ginfo = fsp_find_extension_hob_by_guid(fsp_graphics_info_guid, &size); |
| |
| if (!ginfo) { |
| printk(BIOS_ALERT, "Graphics hand-off block not found\n"); |
| update_fw_splash_screen_event(FW_SPLASH_SCREEN_DISABLED); |
| return; |
| } |
| |
| if (ginfo->pixel_format >= ARRAY_SIZE(fsp_framebuffer_format_map)) { |
| printk(BIOS_ALERT, "FSP set unknown framebuffer format: %d\n", |
| ginfo->pixel_format); |
| update_fw_splash_screen_event(FW_SPLASH_SCREEN_DISABLED); |
| return; |
| } |
| |
| update_fw_splash_screen_event(FW_SPLASH_SCREEN_ENABLED); |
| fbinfo = fsp_framebuffer_format_map + ginfo->pixel_format; |
| |
| const struct lb_framebuffer fb = { |
| .physical_address = framebuffer_bar, |
| .x_resolution = ginfo->horizontal_resolution, |
| .y_resolution = ginfo->vertical_resolution, |
| .bytes_per_line = ginfo->pixels_per_scanline * 4, |
| .bits_per_pixel = fbinfo->rsvd.size + fbinfo->red.size + |
| fbinfo->green.size + fbinfo->blue.size, |
| .red_mask_pos = fbinfo->red.pos, |
| .red_mask_size = fbinfo->red.size, |
| .green_mask_pos = fbinfo->green.pos, |
| .green_mask_size = fbinfo->green.size, |
| .blue_mask_pos = fbinfo->blue.pos, |
| .blue_mask_size = fbinfo->blue.size, |
| .reserved_mask_pos = fbinfo->rsvd.pos, |
| .reserved_mask_size = fbinfo->rsvd.size, |
| .orientation = orientation, |
| .flags = { |
| .has_external_display = fsp_soc_report_external_display(), |
| }, |
| }; |
| |
| fb_add_framebuffer_info_ex(&fb); |
| } |