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https://github.com/brain-hackers/u-boot-brain
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a877880c69
1280x1024 and 1024x768 @ 32 bpp are supported now.
DVI, Single-link LVDS, Double-link LVDS are all supported.
Environmental variable "monitor" is used to specify monitor port.
A new command "diufb" is introduced to reinitialize monitor
and display a BMP file in the memory. So far, 1-bit, 4-bit,
8-bit and 24-bit BMP formats are supported.
diufb init
- initialize the diu driver
Enable the port specified in the environmental variable "monitor"
diufb addr
- display bmp file in memory.
The bmp image should be no bigger than the resolution, 1280x1024
for DVI and double-link LVDS, 1024x768 for single-link LVDS.
Note, this driver allocate memory but doesn't free it after use
It is written on purpose -- to avoid a failure of reallocation
due to memory fragement.
ECC of DDR is disabled for DIU performance. L2 data cache is also disabled.
Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Jon loeliger <jdl@freescale.com>
106 lines
2.7 KiB
C
106 lines
2.7 KiB
C
/*
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* Copyright 2007 Freescale Semiconductor, Inc.
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* York Sun <yorksun@freescale.com>
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*
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* FSL DIU Framebuffer driver
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <command.h>
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#include <asm/io.h>
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#ifdef CONFIG_FSL_DIU_FB
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#include "../common/pixis.h"
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#include "../common/fsl_diu_fb.h"
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extern unsigned int FSL_Logo_BMP[];
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void mpc8610hpcd_diu_init(void)
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{
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char *monitor_port;
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int xres, gamma_fix;
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unsigned int pixel_format;
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unsigned char tmp_val;
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tmp_val = in8(PIXIS_BASE + PIXIS_BRDCFG0);
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monitor_port = getenv ("monitor");
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if (!strncmp(monitor_port, "0", 1)) { /* 0 - DVI */
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xres = 1280;
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pixel_format = 0x88882317;
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gamma_fix = 0;
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out8(PIXIS_BASE + PIXIS_BRDCFG0, tmp_val | 0x08);
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} else if (!strncmp(monitor_port, "1", 1)) { /* 1 - Single link LVDS */
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xres = 1024;
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pixel_format = 0x88883316;
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gamma_fix = 0;
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out8(PIXIS_BASE + PIXIS_BRDCFG0, (tmp_val & 0xf7) | 0x10);
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} else if (!strncmp(monitor_port, "2", 1)) { /* 2 - Double link LVDS */
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xres = 1280;
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pixel_format = 0x88883316;
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gamma_fix = 1;
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out8(PIXIS_BASE + PIXIS_BRDCFG0, tmp_val & 0xe7);
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} else { /* DVI */
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xres = 1280;
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pixel_format = 0x88882317;
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gamma_fix = 0;
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out8(PIXIS_BASE + PIXIS_BRDCFG0, tmp_val | 0x08);
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}
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fsl_diu_init(xres, pixel_format, gamma_fix,
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(unsigned char *)FSL_Logo_BMP);
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}
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int mpc8610diu_init_show_bmp(cmd_tbl_t *cmdtp,
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int flag, int argc, char *argv[])
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{
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unsigned int addr;
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if (argc < 2) {
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printf ("Usage:\n%s\n", cmdtp->usage);
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return 1;
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}
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if (!strncmp(argv[1],"init",4)) {
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mpc8610hpcd_diu_init();
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} else {
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addr = simple_strtoul(argv[1], NULL, 16);
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fsl_diu_clear_screen();
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fsl_diu_display_bmp((unsigned char *)addr, 0, 0, 0);
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}
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return 0;
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}
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U_BOOT_CMD(
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diufb, CFG_MAXARGS, 1, mpc8610diu_init_show_bmp,
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"diufb init | addr - Init or Display BMP file\n",
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"init\n - initialize DIU\n"
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"addr\n - display bmp at address 'addr'\n"
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);
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#endif /* CONFIG_FSL_DIU_FB */
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