From fb22ff4c03091c0b84a715df1320cfe74bcea665 Mon Sep 17 00:00:00 2001 From: Alexandru Gagniuc Date: Thu, 25 Feb 2016 14:22:03 -0800 Subject: drivers/intel/fsp2_0: Add framebuffer graphics support This adds a few helper functions that are intended to assist setting up framebuffer. Change-Id: Id8ed4de1f9de32e9222b0120c15a6d33676346e7 Signed-off-by: Andrey Petrov Reviewed-on: https://review.coreboot.org/13802 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/drivers/intel/fsp2_0/graphics.c | 105 ++++++++++++++++++++++++++++++++++++ 1 file changed, 105 insertions(+) create mode 100644 src/drivers/intel/fsp2_0/graphics.c (limited to 'src/drivers/intel/fsp2_0') diff --git a/src/drivers/intel/fsp2_0/graphics.c b/src/drivers/intel/fsp2_0/graphics.c new file mode 100644 index 0000000000..1480179eaa --- /dev/null +++ b/src/drivers/intel/fsp2_0/graphics.c @@ -0,0 +1,105 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2015 Intel Corp. + * (Written by Alexandru Gagniuc for Intel Corp.) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include +#include +#include + +enum pixel_format { + pixel_rgbx_8bpc = 0, + pixel_bgrx_8bpc = 1, + pixel_bitmask = 2, /* defined by _mask values */ +}; + +static const uint8_t uuid_graphics_info[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; +} __attribute__((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 cb_err fsp_fill_lb_framebuffer(struct lb_framebuffer *framebuffer) +{ + size_t size; + const struct hob_graphics_info *ginfo; + const struct fsp_framebuffer *fbinfo; + + ginfo = fsp_find_extension_hob_by_uuid(uuid_graphics_info, &size); + + if (!ginfo) { + printk(BIOS_ALERT, "Graphics hand-off block not found\n"); + return CB_ERR; + } + + if (ginfo->pixel_format > ARRAY_SIZE(fsp_framebuffer_format_map)) { + printk(BIOS_ALERT, "FSP set unknown framebuffer format: %d\n", + ginfo->pixel_format); + return CB_ERR; + } + + fbinfo = fsp_framebuffer_format_map + ginfo->pixel_format; + + framebuffer->physical_address = ginfo->framebuffer_base; + framebuffer->x_resolution = ginfo->horizontal_resolution; + framebuffer->y_resolution = ginfo->vertical_resolution; + framebuffer->bytes_per_line = ginfo->pixels_per_scanline * 4; + framebuffer->bits_per_pixel = 32; + framebuffer->red_mask_pos = fbinfo->red.pos; + framebuffer->red_mask_size = fbinfo->red.size; + framebuffer->green_mask_pos = fbinfo->green.pos; + framebuffer->green_mask_size = fbinfo->green.size; + framebuffer->blue_mask_pos = fbinfo->blue.pos; + framebuffer->blue_mask_size = fbinfo->blue.size; + framebuffer->reserved_mask_pos = fbinfo->rsvd.pos; + framebuffer->reserved_mask_size = fbinfo->rsvd.pos; + framebuffer->tag = LB_TAG_FRAMEBUFFER; + framebuffer->size = sizeof(*framebuffer); + return CB_SUCCESS; +} + +uintptr_t fsp_load_vbt(void) +{ + void *vbt; + + vbt = cbfs_boot_map_with_leak("vbt.bin", CBFS_TYPE_RAW, NULL); + if (!vbt) + printk(BIOS_NOTICE, "Could not locate a VBT file in CBFS\n"); + + return (uintptr_t)vbt; +} -- cgit v1.2.3