From dd84182c0b25206536632a3895d7239cfe9cf005 Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Sat, 15 Nov 2025 23:13:22 -0500 Subject: kern: dev: Add initial console driver This commit introduces the boot console driver and integrates it with the tracing system Signed-off-by: Ian Moffett --- sys/inc/dev/cons/cons.h | 71 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 sys/inc/dev/cons/cons.h (limited to 'sys/inc') diff --git a/sys/inc/dev/cons/cons.h b/sys/inc/dev/cons/cons.h new file mode 100644 index 0000000..8038f17 --- /dev/null +++ b/sys/inc/dev/cons/cons.h @@ -0,0 +1,71 @@ +/* + * Copyright (c) 2025 Ian Marco Moffett and the Osmora Team. + * 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 Hyra 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. + */ + +#ifndef _CONS_CONS_H_ +#define _CONS_CONS_H_ 1 + +#include +#include + +/* + * Represents a system console, these fields are mostly + * internal and should not be written to directly. + * + * @vram: VRAM descriptor in-use + * @fg: Foreground color in-use + * @bg: Background color in-use + * @tx: Text X position + * @ty: Text Y position + * @active: Set if active + */ +struct console { + struct vram_dev vram; + uint32_t fg; + uint32_t bg; + size_t tx; + size_t ty; + uint8_t active : 1; +}; + +/* + * Reset a console into a known state, typically used + * for initialization. + * + * Returns zero on success. + */ +int console_reset(struct console *cons); + +/* + * Write a stream of bytes to the console. + * + * Returns zero on success. + */ +int console_write(struct console *cons, const char *s, size_t len); + +#endif /* !_CONS_CONS_H_ */ -- cgit v1.2.3