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/*
* (C) Copyright 2007 Pengutronix
* Sascha Hauer, <s.hauer@pengutronix.de>
*
* 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 <config.h>
#include <common.h>
#ifdef CFG_SPLASH
#include <command.h>
#include <bmp_layout.h>
#include <splash.h>
#include <asm/byteorder.h>
static struct fb_data *fbd = NULL;
int splash_set_fb_data(struct fb_data *d)
{
fbd = d;
return 0;
}
int do_splash(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
ulong addr;
bmp_image_t *bmp;
int fb_line_length, bmp_line_length;
int copy_width, copy_height;
int colors;
int i, x, y;
char *src, *dst;
unsigned long *dstl, *srcl;
if (argc == 1) {
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
if (!fbd) {
printf("No framebuffer found\n");
return 1;
}
addr = simple_strtoul(argv[1], NULL, 16);
bmp = (bmp_image_t *)addr;
if (!((bmp->header.signature[0]=='B') &&
(bmp->header.signature[1]=='M'))) {
printf("No valid bmp file found on address 0x%08x\n",addr);
return 1;
}
if (fbd->bpp != le16_to_cpu(bmp->header.bit_count)) {
printf("Display image depth does not match framebuffer image depth\n");
printf("(display depth: %dbpp image depth: %dbpp\n", fbd->bpp,
le16_to_cpu(bmp->header.bit_count));
return 1;
}
colors = 1 << le16_to_cpu (bmp->header.bit_count);
printf("Image size : %d x %d\n", le32_to_cpu(bmp->header.width),
le32_to_cpu(bmp->header.height));
printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count));
printf("colors used : %d\n", colors);
/* Set color map to zero */
for (i = 0; i < colors; i++)
fbd->setcolreg(fbd, i, 0, 0, 0);
fb_line_length = (fbd->xres * fbd->bpp) >> 3;
bmp_line_length = (le32_to_cpu(bmp->header.width) *
le16_to_cpu(bmp->header.bit_count)) >> 3;
if (bmp_line_length & 0x3)
bmp_line_length = (bmp_line_length & ~3) + 4;
copy_width = min(fb_line_length, bmp_line_length);
copy_height = min(fbd->yres, le32_to_cpu(bmp->header.height));
memset(fbd->fb, 0, fb_line_length * fbd->yres);
// printf("copy_width: %d copy_height: %d fb_line_length: %d "
// "bmp_line_length: %d\n", copy_width, copy_height,
// fb_line_length, bmp_line_length);
for (y = 0; y < copy_height; y++) {
dst = (char*)fbd->fb + y * fb_line_length;
src = (char*)(addr + bmp->header.data_offset) +
(le32_to_cpu(bmp->header.height) - y - 1) * bmp_line_length;
// printf("dst: %d src: %d\n",
// (unsigned long)dst - (unsigned long)fbd->fb,
// (unsigned long)src - (unsigned long)(addr + bmp->header.data_offset));
dstl = (unsigned long *)dst;
srcl = (unsigned long *)((unsigned long)src & ~3);
for (x = 0; x < (copy_width >> 2); x++) {
*dstl++ = *srcl++;
}
}
/* Set color map */
for (i = 0; i < colors; i++) {
bmp_color_table_entry_t cte = bmp->color_table[i];
fbd->setcolreg(fbd, i, cte.red, cte.green, cte.blue);
}
return 0;
}
U_BOOT_CMD(
splash, 2, 0, do_splash,
"splash <imageaddr> - display a splash screen.",
" Only color mapped\n"
" bmp files are supported. Images smaller than\n"
" the screen are put in the top left corner, from \n"
" bigger images only the top left corner of the\n"
" image is displayed\n"
);
#endif /* CFG_SPLASH */
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