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/*
* This file is part of the libpayload project.
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
*
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 <libpayload-config.h>
#include <libpayload.h>
#include <usb/usb.h>
struct console_output_driver *console_out;
struct console_input_driver *console_in;
static console_input_type last_getchar_input_type;
static int output_driver_exists(struct console_output_driver *out)
{
struct console_output_driver *head = console_out;
while (head) {
if (head == out)
return 1;
head = head->next;
}
return 0;
}
static int input_driver_exists(struct console_input_driver *in)
{
struct console_input_driver *head = console_in;
while (head) {
if (head == in)
return 1;
head = head->next;
}
return 0;
}
void console_add_output_driver(struct console_output_driver *out)
{
die_if(!out->putchar && !out->write, "Need at least one output func\n");
/* Check if this driver was already added to the console list */
if (output_driver_exists(out))
return;
out->next = console_out;
console_out = out;
}
void console_add_input_driver(struct console_input_driver *in)
{
/* Check if this driver was already added to the console list */
if (input_driver_exists(in))
return;
in->next = console_in;
console_in = in;
}
/*
* For when you really need to silence an output driver (e.g. to avoid ugly
* recursions). Takes the pointer of either of the two output functions, since
* the struct console_output_driver itself is often static and inaccessible.
*/
int console_remove_output_driver(void *function)
{
struct console_output_driver **out;
for (out = &console_out; *out; out = &(*out)->next)
if ((*out)->putchar == function || (*out)->write == function) {
*out = (*out)->next;
return 1;
}
return 0;
}
void console_init(void)
{
#ifdef CONFIG_LP_VIDEO_CONSOLE
video_console_init();
#endif
#ifdef CONFIG_LP_SERIAL_CONSOLE
serial_console_init();
#endif
#ifdef CONFIG_LP_PC_KEYBOARD
keyboard_init();
#endif
#ifdef CONFIG_LP_CBMEM_CONSOLE
cbmem_console_init();
#endif
}
void console_write(const void *buffer, size_t count)
{
const char *ptr;
struct console_output_driver *out;
for (out = console_out; out != 0; out = out->next)
if (out->write)
out->write(buffer, count);
else
for (ptr = buffer; (void *)ptr < buffer + count; ptr++)
out->putchar(*ptr);
}
int putchar(unsigned int i)
{
unsigned char c = (unsigned char)i;
console_write(&c, 1);
return (int)c;
}
int puts(const char *s)
{
size_t size = strlen(s);
console_write(s, size);
putchar('\n');
return size + 1;
}
int havekey(void)
{
#ifdef CONFIG_LP_USB
usb_poll();
#endif
struct console_input_driver *in;
for (in = console_in; in != 0; in = in->next)
if (in->havekey())
return 1;
return 0;
}
/**
* This returns an ASCII value - the two getchar functions
* cook the respective input from the device.
*/
int getchar(void)
{
while (1) {
#ifdef CONFIG_LP_USB
usb_poll();
#endif
struct console_input_driver *in;
for (in = console_in; in != 0; in = in->next)
if (in->havechar()) {
last_getchar_input_type = in->input_type;
return in->getchar();
}
}
}
int getchar_timeout(int *ms)
{
while (*ms > 0) {
if (havekey())
return getchar();
mdelay(100);
*ms -= 100;
}
if (*ms < 0)
*ms = 0;
return 0;
}
console_input_type last_key_input_type(void)
{
return last_getchar_input_type;
}
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