summaryrefslogtreecommitdiff
path: root/arch/powerpc/cpu/mpc512x/diu.c
blob: 1cce6a233cc10d06350d4735fb8166a2f65aae31 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
/*
 * Copyright 2008 Freescale Semiconductor, Inc.
 * York Sun <yorksun@freescale.com>
 *
 * FSL DIU Framebuffer driver
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <command.h>
#include <asm/io.h>

#include "../../../../board/freescale/common/fsl_diu_fb.h"

#if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
#include <stdio_dev.h>
#include <video_fb.h>
#endif

DECLARE_GLOBAL_DATA_PTR;

#ifdef CONFIG_FSL_DIU_LOGO_BMP
extern unsigned int FSL_Logo_BMP[];
#else
#define FSL_Logo_BMP NULL
#endif

static int xres, yres;

void diu_set_pixel_clock(unsigned int pixclock)
{
	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
	volatile clk512x_t *clk = &immap->clk;
	volatile unsigned int *clkdvdr = &clk->scfr[0];
	unsigned long speed_ccb, temp, pixval;

	speed_ccb = get_bus_freq(0) * 4;
	temp = 1000000000/pixclock;
	temp *= 1000;
	pixval = speed_ccb / temp;
	debug("DIU pixval = %lu\n", pixval);

	/* Modify PXCLK in GUTS CLKDVDR */
	debug("DIU: Current value of CLKDVDR = 0x%08x\n", in_be32(clkdvdr));
	temp = in_be32(clkdvdr) & 0xFFFFFF00;
	out_be32(clkdvdr, temp | (pixval & 0xFF));
	debug("DIU: Modified value of CLKDVDR = 0x%08x\n", in_be32(clkdvdr));
}

char *valid_bmp(char *addr)
{
	unsigned long h_addr;
	bd_t *bd = gd->bd;

	h_addr = simple_strtoul(addr, NULL, 16);
	if (h_addr < bd->bi_flashstart ||
	    h_addr >= (bd->bi_flashstart + bd->bi_flashsize - 1)) {
		printf("bmp addr %lx is not a valid flash address\n", h_addr);
		return 0;
	} else if ((*(char *)(h_addr) != 'B') || (*(char *)(h_addr+1) != 'M')) {
		printf("bmp addr is not a bmp\n");
		return 0;
	} else
		return (char *)h_addr;
}

int mpc5121_diu_init(void)
{
	unsigned int pixel_format;
	char *bmp = NULL;
	char *bmp_env;

#if defined(CONFIG_VIDEO_XRES) & defined(CONFIG_VIDEO_YRES)
	xres = CONFIG_VIDEO_XRES;
	yres = CONFIG_VIDEO_YRES;
#else
	xres = 1024;
	yres = 768;
#endif
	pixel_format = 0x88883316;

	debug("mpc5121_diu_init\n");
	bmp_env = getenv("diu_bmp_addr");
	if (bmp_env) {
		bmp = valid_bmp(bmp_env);
	}
	if (!bmp)
		bmp = (char *)FSL_Logo_BMP;
	return fsl_diu_init(xres, pixel_format, 0, (unsigned char *)bmp);
}

int mpc5121diu_init_show_bmp(cmd_tbl_t *cmdtp,
			     int flag, int argc, char *argv[])
{
	unsigned int addr;

	if (argc < 2) {
		cmd_usage(cmdtp);
		return 1;
	}

	if (!strncmp(argv[1], "init", 4)) {
#if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
		fsl_diu_clear_screen();
		drv_video_init();
#else
		return mpc5121_diu_init();
#endif
	} else {
		addr = simple_strtoul(argv[1], NULL, 16);
		fsl_diu_clear_screen();
		fsl_diu_display_bmp((unsigned char *)addr, 0, 0, 0);
	}

	return 0;
}

U_BOOT_CMD(
	diufb, CONFIG_SYS_MAXARGS, 1, mpc5121diu_init_show_bmp,
	"Init or Display BMP file",
	"init\n    - initialize DIU\n"
	"addr\n    - display bmp at address 'addr'"
	);


#if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)

/*
 * The Graphic Device
 */
GraphicDevice ctfb;
void *video_hw_init(void)
{
	GraphicDevice *pGD = (GraphicDevice *) &ctfb;
	struct fb_info *info;

	if (mpc5121_diu_init() < 0)
		return NULL;

	/* fill in Graphic device struct */
	sprintf(pGD->modeIdent, "%dx%dx%d %dkHz %dHz",
		xres, yres, 32, 64, 60);

	pGD->frameAdrs = (unsigned int)fsl_fb_open(&info);
	pGD->winSizeX = xres;
	pGD->winSizeY = yres - info->logo_height;
	pGD->plnSizeX = pGD->winSizeX;
	pGD->plnSizeY = pGD->winSizeY;

	pGD->gdfBytesPP = 4;
	pGD->gdfIndex = GDF_32BIT_X888RGB;

	pGD->isaBase = 0;
	pGD->pciBase = 0;
	pGD->memSize = info->screen_size - info->logo_size;

	/* Cursor Start Address */
	pGD->dprBase = 0;
	pGD->vprBase = 0;
	pGD->cprBase = 0;

	return (void *)pGD;
}

#endif /* defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE) */