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/*
* Copyright (c) 2025 Ian Marco Moffett and L5 engineers
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/errno.h>
#include <sys/syslog.h>
#include <io/cons/cons.h>
#include <stdbool.h>
#include <string.h>
#define DEFAULT_BG 0x000000
#define DEFAULT_FG 0xB57614
struct cons_scr g_root_scr;
/*
* Fill a screen with a desired background
* color
*
* @bg: Background color to fill screen
*/
static void
fill_screen(struct cons_scr *scr, uint32_t bg)
{
struct bootvar_fb *fbvars;
size_t len;
if (scr == NULL) {
return;
}
fbvars = &scr->fbvars;
len = fbvars->width * fbvars->pitch;
memset(fbvars->io, bg, len);
}
/*
* Initialize the console
*/
int
cons_init(void)
{
static bool is_init = false;
struct bootvars bv;
int error;
/* Only init once */
if (!is_init) {
is_init = true;
} else {
return -EPERM;
}
/*
* Attempt to acquire the bootvars so we
* can get the framebuffer
*/
error = bootvars_read(&bv, 0);
if (error < 0) {
printf("cons_init: could not read bootvars\n");
is_init = false;
return error;
}
memcpy(&g_root_scr.fbvars, &bv.fbvars, sizeof(bv.fbvars));
g_root_scr.scr_bg = DEFAULT_BG;
g_root_scr.scr_fg = DEFAULT_FG;
fill_screen(&g_root_scr, g_root_scr.scr_bg);
return 0;
}
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