9ed8a82d26
You might want to use the serial hardware for something other than a console, or you might want to intercede in the serial stream to wrap it in another protocol. This is what you'd do to send output to GDB while using it to debug the payload. Change-Id: I2218c0dbb988dacb64e5bdaf5d92138828eff8b6 Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-on: https://chromium-review.googlesource.com/179559 Reviewed-by: Ronald Minnich <rminnich@chromium.org> Reviewed-by: David Hendricks <dhendrix@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Tested-by: Gabe Black <gabeblack@chromium.org> (cherry picked from commit da9ab46d974745125fe7d8b29ce43336c3586cd5) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6547 Tested-by: build bot (Jenkins)
145 lines
3.4 KiB
C
145 lines
3.4 KiB
C
/*
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* This file is part of the libpayload project.
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*
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* Copyright (C) 2008 Advanced Micro Devices, 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-config.h>
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#include <libpayload.h>
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#include <usb/usb.h>
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struct console_output_driver *console_out;
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struct console_input_driver *console_in;
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static console_input_type last_getchar_input_type;
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void console_add_output_driver(struct console_output_driver *out)
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{
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out->next = console_out;
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console_out = out;
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}
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void console_add_input_driver(struct console_input_driver *in)
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{
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in->next = console_in;
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console_in = in;
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}
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void console_init(void)
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{
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#ifdef CONFIG_LP_VIDEO_CONSOLE
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video_console_init();
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#endif
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#ifdef CONFIG_LP_SERIAL_CONSOLE
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serial_console_init();
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#endif
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#ifdef CONFIG_LP_PC_KEYBOARD
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keyboard_init();
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#endif
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#ifdef CONFIG_LP_CBMEM_CONSOLE
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cbmem_console_init();
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#endif
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}
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static void device_putchar(unsigned char c)
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{
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struct console_output_driver *out;
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for (out = console_out; out != 0; out = out->next)
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out->putchar(c);
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}
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int putchar(unsigned int c)
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{
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c &= 0xff;
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if (c == '\n')
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device_putchar('\r');
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device_putchar(c);
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return c;
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}
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int puts(const char *s)
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{
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int n = 0;
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while (*s) {
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putchar(*s++);
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n++;
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}
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putchar('\n');
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return n + 1;
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}
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int havekey(void)
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{
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#ifdef CONFIG_LP_USB
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usb_poll();
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#endif
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struct console_input_driver *in;
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for (in = console_in; in != 0; in = in->next)
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if (in->havekey())
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return 1;
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return 0;
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}
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/**
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* This returns an ASCII value - the two getchar functions
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* cook the respective input from the device.
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*/
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int getchar(void)
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{
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while (1) {
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#ifdef CONFIG_LP_USB
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usb_poll();
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#endif
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struct console_input_driver *in;
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for (in = console_in; in != 0; in = in->next)
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if (in->havechar()) {
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last_getchar_input_type = in->input_type;
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return in->getchar();
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}
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}
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}
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int getchar_timeout(int *ms)
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{
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while (*ms > 0) {
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if (havekey())
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return getchar();
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mdelay(100);
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*ms -= 100;
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}
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if (*ms < 0)
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*ms = 0;
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return 0;
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}
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console_input_type last_key_input_type(void)
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{
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return last_getchar_input_type;
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}
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