61 lines
2.1 KiB
C
61 lines
2.1 KiB
C
/*
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* This file is part of the libpayload project.
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*
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* Copyright (c) 2012 Google Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <libpayload.h>
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#include <stdint.h>
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struct cbmem_console {
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uint32_t size;
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uint32_t cursor;
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uint8_t body[0];
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} __attribute__ ((__packed__));
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static struct cbmem_console *cbmem_console_p;
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static struct console_output_driver cbmem_console_driver =
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{
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.putchar = &cbmem_console_putc
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};
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void cbmem_console_init(void)
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{
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cbmem_console_p = lib_sysinfo.cbmem_cons;
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if (cbmem_console_p)
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console_add_output_driver(&cbmem_console_driver);
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}
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void cbmem_console_putc(unsigned int data)
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{
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// Bail out if the buffer is full.
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if (cbmem_console_p->cursor >= cbmem_console_p->size)
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return;
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cbmem_console_p->body[cbmem_console_p->cursor++] = data;
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}
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