[people/ms/u-boot.git] / drivers / video / coreboot_fb.c

/*
 * coreboot Framebuffer driver.
 *
 * Copyright (C) 2011 The Chromium OS authors
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <asm/arch/tables.h>
#include <asm/arch/sysinfo.h>
#include <vbe.h>
#include <video_fb.h>
#include "videomodes.h"

/*
 * The Graphic Device
 */
GraphicDevice ctfb;

static void save_vesa_mode(void)
{
	struct vesa_mode_info *vesa = &mode_info.vesa;
	struct cb_framebuffer *fb = lib_sysinfo.framebuffer;

	vesa->x_resolution = fb->x_resolution;
	vesa->y_resolution = fb->y_resolution;
	vesa->bits_per_pixel = fb->bits_per_pixel;
	vesa->bytes_per_scanline = fb->bytes_per_line;
	vesa->phys_base_ptr = fb->physical_address;
	vesa->red_mask_size = fb->red_mask_size;
	vesa->red_mask_pos = fb->red_mask_pos;
	vesa->green_mask_size = fb->green_mask_size;
	vesa->green_mask_pos = fb->green_mask_pos;
	vesa->blue_mask_size = fb->blue_mask_size;
	vesa->blue_mask_pos = fb->blue_mask_pos;
	vesa->reserved_mask_size = fb->reserved_mask_size;
	vesa->reserved_mask_pos = fb->reserved_mask_pos;
}

static int parse_coreboot_table_fb(GraphicDevice *gdev)
{
	struct cb_framebuffer *fb = lib_sysinfo.framebuffer;

	/* If there is no framebuffer structure, bail out and keep
	 * running on the serial console.
	 */
	if (!fb)
		return 0;

	gdev->winSizeX = fb->x_resolution;
	gdev->winSizeY = fb->y_resolution;

	gdev->plnSizeX = fb->x_resolution;
	gdev->plnSizeY = fb->y_resolution;

	gdev->gdfBytesPP = fb->bits_per_pixel / 8;

	switch (fb->bits_per_pixel) {
	case 24:
		gdev->gdfIndex = GDF_32BIT_X888RGB;
		break;
	case 16:
		gdev->gdfIndex = GDF_16BIT_565RGB;
		break;
	default:
		gdev->gdfIndex = GDF__8BIT_INDEX;
		break;
	}

	gdev->isaBase = CONFIG_SYS_ISA_IO_BASE_ADDRESS;
	gdev->pciBase = (unsigned int)fb->physical_address;

	gdev->frameAdrs = (unsigned int)fb->physical_address;
	gdev->memSize = fb->bytes_per_line * fb->y_resolution;

	gdev->vprBase = (unsigned int)fb->physical_address;
	gdev->cprBase = (unsigned int)fb->physical_address;

	return 1;
}

void *video_hw_init(void)
{
	GraphicDevice *gdev = &ctfb;
	int bits_per_pixel;

	printf("Video: ");

	if (!parse_coreboot_table_fb(gdev)) {
		printf("No video mode configured in coreboot!\n");
		return NULL;
	}

	bits_per_pixel = gdev->gdfBytesPP * 8;

	/* fill in Graphic device struct */
	sprintf(gdev->modeIdent, "%dx%dx%d", gdev->winSizeX, gdev->winSizeY,
		 bits_per_pixel);
	printf("%s\n", gdev->modeIdent);

	memset((void *)gdev->pciBase, 0,
		gdev->winSizeX * gdev->winSizeY * gdev->gdfBytesPP);

	/* Initialize vesa_mode_info structure */
	save_vesa_mode();

	return (void *)gdev;
}
Commit	Line	Data
17c40ad9 SR	1	/*
	2	* coreboot Framebuffer driver.
	3	*
	4	* Copyright (C) 2011 The Chromium OS authors
	5	*
1a459660	6	* SPDX-License-Identifier: GPL-2.0+
17c40ad9 SR	7	*/
	8
	9	#include <common.h>
	10	#include <asm/arch/tables.h>
	11	#include <asm/arch/sysinfo.h>
153e1dda	12	#include <vbe.h>
17c40ad9 SR	13	#include <video_fb.h>
	14	#include "videomodes.h"
	15
	16	/*
	17	* The Graphic Device
	18	*/
	19	GraphicDevice ctfb;
	20
153e1dda BM	21	static void save_vesa_mode(void)
	22	{
	23	struct vesa_mode_info *vesa = &mode_info.vesa;
	24	struct cb_framebuffer *fb = lib_sysinfo.framebuffer;
	25
	26	vesa->x_resolution = fb->x_resolution;
	27	vesa->y_resolution = fb->y_resolution;
	28	vesa->bits_per_pixel = fb->bits_per_pixel;
	29	vesa->bytes_per_scanline = fb->bytes_per_line;
	30	vesa->phys_base_ptr = fb->physical_address;
	31	vesa->red_mask_size = fb->red_mask_size;
	32	vesa->red_mask_pos = fb->red_mask_pos;
	33	vesa->green_mask_size = fb->green_mask_size;
	34	vesa->green_mask_pos = fb->green_mask_pos;
	35	vesa->blue_mask_size = fb->blue_mask_size;
	36	vesa->blue_mask_pos = fb->blue_mask_pos;
	37	vesa->reserved_mask_size = fb->reserved_mask_size;
	38	vesa->reserved_mask_pos = fb->reserved_mask_pos;
	39	}
	40
17c40ad9 SR	41	static int parse_coreboot_table_fb(GraphicDevice *gdev)
	42	{
	43	struct cb_framebuffer *fb = lib_sysinfo.framebuffer;
	44
	45	/* If there is no framebuffer structure, bail out and keep
	46	* running on the serial console.
	47	*/
	48	if (!fb)
	49	return 0;
	50
	51	gdev->winSizeX = fb->x_resolution;
	52	gdev->winSizeY = fb->y_resolution;
	53
	54	gdev->plnSizeX = fb->x_resolution;
	55	gdev->plnSizeY = fb->y_resolution;
	56
	57	gdev->gdfBytesPP = fb->bits_per_pixel / 8;
	58
	59	switch (fb->bits_per_pixel) {
	60	case 24:
	61	gdev->gdfIndex = GDF_32BIT_X888RGB;
	62	break;
	63	case 16:
	64	gdev->gdfIndex = GDF_16BIT_565RGB;
	65	break;
	66	default:
	67	gdev->gdfIndex = GDF__8BIT_INDEX;
	68	break;
	69	}
	70
	71	gdev->isaBase = CONFIG_SYS_ISA_IO_BASE_ADDRESS;
	72	gdev->pciBase = (unsigned int)fb->physical_address;
	73
	74	gdev->frameAdrs = (unsigned int)fb->physical_address;
	75	gdev->memSize = fb->bytes_per_line * fb->y_resolution;
	76
	77	gdev->vprBase = (unsigned int)fb->physical_address;
	78	gdev->cprBase = (unsigned int)fb->physical_address;
	79
	80	return 1;
	81	}
	82
	83	void *video_hw_init(void)
	84	{
	85	GraphicDevice *gdev = &ctfb;
	86	int bits_per_pixel;
	87
	88	printf("Video: ");
	89
	90	if (!parse_coreboot_table_fb(gdev)) {
	91	printf("No video mode configured in coreboot!\n");
	92	return NULL;
	93	}
	94
	95	bits_per_pixel = gdev->gdfBytesPP * 8;
	96
	97	/* fill in Graphic device struct */
	98	sprintf(gdev->modeIdent, "%dx%dx%d", gdev->winSizeX, gdev->winSizeY,
	99	bits_per_pixel);
	100	printf("%s\n", gdev->modeIdent);
	101
	102	memset((void *)gdev->pciBase, 0,
	103	gdev->winSizeX * gdev->winSizeY * gdev->gdfBytesPP);
	104
153e1dda BM	105	/* Initialize vesa_mode_info structure */
	106	save_vesa_mode();
	107
17c40ad9 SR	108	return (void *)gdev;
17c40ad9 SR	109	}