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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2015 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; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <boot/coreboot_tables.h>
#include <cbfs.h>
#include <console/console.h>
#include <fsp/util.h>
#include <lib.h>
/* Reading VBT table from flash */
const optionrom_vbt_t *fsp_get_vbt(uint32_t *vbt_len)
{
size_t vbt_size;
union {
const optionrom_vbt_t *data;
uint32_t *signature;
} vbt;
/* Locate the vbt file in cbfs */
vbt.data = cbfs_boot_map_with_leak("vbt.bin", CBFS_TYPE_OPTIONROM,
&vbt_size);
if (!vbt.data) {
printk(BIOS_INFO,
"FSP_INFO: VBT data file (vbt.bin) not found in CBFS");
return NULL;
}
/* Validate the vbt file */
if (*vbt.signature != VBT_SIGNATURE) {
printk(BIOS_WARNING,
"FSP_WARNING: Invalid signature in VBT data file (vbt.bin)!\n");
return NULL;
}
*vbt_len = vbt_size;
printk(BIOS_DEBUG, "FSP_INFO: VBT found at %p, 0x%08x bytes\n",
vbt.data, *vbt_len);
#if IS_ENABLED(CONFIG_DISPLAY_VBT)
/* Display the vbt file contents */
printk(BIOS_DEBUG, "VBT Data:\n");
hexdump(vbt.data, *vbt_len);
printk(BIOS_DEBUG, "\n");
#endif
/* Return the pointer to the vbt file data */
return vbt.data;
}
void lb_framebuffer(struct lb_header *header)
{
struct lb_framebuffer *framebuffer;
framebuffer = (struct lb_framebuffer *)lb_new_record(header);
VOID *hob_list_ptr;
hob_list_ptr = get_hob_list();
const EFI_GUID vbt_guid = EFI_PEI_GRAPHICS_INFO_HOB_GUID;
u32 *vbt_hob;
EFI_PEI_GRAPHICS_INFO_HOB *vbt_gop;
vbt_hob = get_next_guid_hob(&vbt_guid, hob_list_ptr);
if (vbt_hob == NULL) {
printk(BIOS_ERR, "FSP_ERR: Graphics Data HOB is not present\n");
return;
} else {
printk(BIOS_DEBUG, "FSP_DEBUG: Graphics Data HOB present\n");
vbt_gop = GET_GUID_HOB_DATA(vbt_hob);
}
framebuffer->physical_address = vbt_gop->FrameBufferBase;
framebuffer->x_resolution = vbt_gop->GraphicsMode.HorizontalResolution;
framebuffer->y_resolution = vbt_gop->GraphicsMode.VerticalResolution;
framebuffer->bytes_per_line = vbt_gop->GraphicsMode.PixelsPerScanLine
* 4;
framebuffer->bits_per_pixel = 32;
framebuffer->red_mask_pos = 16;
framebuffer->red_mask_size = 8;
framebuffer->green_mask_pos = 8;
framebuffer->green_mask_size = 8;
framebuffer->blue_mask_pos = 0;
framebuffer->blue_mask_size = 8;
framebuffer->reserved_mask_pos = 24;
framebuffer->reserved_mask_size = 8;
framebuffer->tag = LB_TAG_FRAMEBUFFER;
framebuffer->size = sizeof(*framebuffer);
}
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