diff options
Diffstat (limited to 'payloads/libpayload/drivers/serial.c')
| -rw-r--r-- | payloads/libpayload/drivers/serial.c | 250 |
1 files changed, 0 insertions, 250 deletions
diff --git a/payloads/libpayload/drivers/serial.c b/payloads/libpayload/drivers/serial.c deleted file mode 100644 index a239ecd95c..0000000000 --- a/payloads/libpayload/drivers/serial.c +++ /dev/null @@ -1,250 +0,0 @@ -/* - * This file is part of the libpayload project. - * - * Copyright (C) 2008 Advanced Micro Devices, Inc. - * Copyright (C) 2008 Ulf Jordan <jordan@chalmers.se> - * - * 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> - -#define IOBASE lib_sysinfo.serial->baseaddr -#define MEMBASE (phys_to_virt(IOBASE)) - -static int serial_hardware_is_present = 0; -static int serial_is_mem_mapped = 0; - -static uint8_t serial_read_reg(int offset) -{ -#if IS_ENABLED(CONFIG_LP_IO_ADDRESS_SPACE) - if (!serial_is_mem_mapped) - return inb(IOBASE + offset); - else -#endif - return readb(MEMBASE + offset); -} - -static void serial_write_reg(uint8_t val, int offset) -{ -#if IS_ENABLED(CONFIG_LP_IO_ADDRESS_SPACE) - if (!serial_is_mem_mapped) - outb(val, IOBASE + offset); - else -#endif - writeb(val, MEMBASE + offset); -} - -#if IS_ENABLED(CONFIG_LP_SERIAL_SET_SPEED) -static void serial_hardware_init(int speed, int word_bits, - int parity, int stop_bits) -{ - unsigned char reg; - -#ifndef PL011_SERIAL_CONSOLE - /* Disable interrupts. */ - serial_write_reg(0, 0x01); - - /* Assert RTS and DTR. */ - serial_write_reg(3, 0x04); - - /* Set the divisor latch. */ - reg = serial_read_reg(0x03); - serial_write_reg(reg | 0x80, 0x03); - - /* Write the divisor. */ - uint16_t divisor = 115200 / speed; - serial_write_reg(divisor & 0xFF, 0x00); - serial_write_reg(divisor >> 8, 0x01); - - /* Restore the previous value of the divisor. - * And set 8 bits per character */ - serial_write_reg((reg & ~0x80) | 3, 0x03); -#endif -} -#endif - -static struct console_input_driver consin = { - .havekey = &serial_havechar, - .getchar = &serial_getchar -}; - -static struct console_output_driver consout = { - .putchar = &serial_putchar -}; - -void serial_init(void) -{ - if (!lib_sysinfo.serial) - return; - - serial_is_mem_mapped = - (lib_sysinfo.serial->type == CB_SERIAL_TYPE_MEMORY_MAPPED); - - if (!serial_is_mem_mapped) { -#if IS_ENABLED(CONFIG_LP_IO_ADDRESS_SPACE) - if ((inb(IOBASE + 0x05) == 0xFF) && - (inb(IOBASE + 0x06) == 0xFF)) { - return; - } -#else - printf("IO space mapped serial not supported."); - return; -#endif - } - - - serial_hardware_is_present = 1; - -#if IS_ENABLED(CONFIG_LP_SERIAL_SET_SPEED) - serial_hardware_init(CONFIG_LP_SERIAL_BAUD_RATE, 8, 0, 1); -#endif -} - -void serial_console_init(void) -{ - if (!lib_sysinfo.serial) - return; - - serial_init(); - - console_add_input_driver(&consin); - console_add_output_driver(&consout); -} - -void serial_putchar(unsigned int c) -{ - if (!serial_hardware_is_present) - return; -#if !IS_ENABLED(CONFIG_LP_PL011_SERIAL_CONSOLE) - while ((serial_read_reg(0x05) & 0x20) == 0) ; -#endif - serial_write_reg(c, 0x00); -} - -int serial_havechar(void) -{ - if (!serial_hardware_is_present) - return 0; - return serial_read_reg(0x05) & 0x01; -} - -int serial_getchar(void) -{ - if (!serial_hardware_is_present) - return -1; - while (!serial_havechar()) ; - return serial_read_reg(0x00); -} - -/* These are thinly veiled vt100 functions used by curses */ - -#define VT100_CLEAR "\e[H\e[J" -/* These defines will fail if you use bold and reverse at the same time. - * Switching off one of them will switch off both. tinycurses knows about - * this and does the right thing. - */ -#define VT100_SBOLD "\e[1m" -#define VT100_EBOLD "\e[m" -#define VT100_SREVERSE "\e[7m" -#define VT100_EREVERSE "\e[m" -#define VT100_CURSOR_ADDR "\e[%d;%dH" -#define VT100_CURSOR_ON "\e[?25h" -#define VT100_CURSOR_OFF "\e[?25l" -/* The following smacs/rmacs are actually for xterm; a real vt100 has - enacs=\E(B\E)0, smacs=^N, rmacs=^O. */ -#define VT100_SMACS "\e(0" -#define VT100_RMACS "\e(B" -/* A vt100 doesn't do color, setaf/setab below are from xterm-color. */ -#define VT100_SET_COLOR "\e[3%d;4%dm" - -static void serial_putcmd(const char *str) -{ - while (*str) - serial_putchar(*(str++)); -} - -void serial_clear(void) -{ - serial_putcmd(VT100_CLEAR); -} - -void serial_start_bold(void) -{ - serial_putcmd(VT100_SBOLD); -} - -void serial_end_bold(void) -{ - serial_putcmd(VT100_EBOLD); -} - -void serial_start_reverse(void) -{ - serial_putcmd(VT100_SREVERSE); -} - -void serial_end_reverse(void) -{ - serial_putcmd(VT100_EREVERSE); -} - -void serial_start_altcharset(void) -{ - serial_putcmd(VT100_SMACS); -} - -void serial_end_altcharset(void) -{ - serial_putcmd(VT100_RMACS); -} - -/** - * Set the foreground and background colors on the serial console. - * - * @param fg Foreground color number. - * @param bg Background color number. - */ -void serial_set_color(short fg, short bg) -{ - char buffer[32]; - snprintf(buffer, sizeof(buffer), VT100_SET_COLOR, fg, bg); - serial_putcmd(buffer); -} - -void serial_set_cursor(int y, int x) -{ - char buffer[32]; - snprintf(buffer, sizeof(buffer), VT100_CURSOR_ADDR, y + 1, x + 1); - serial_putcmd(buffer); -} - -void serial_cursor_enable(int state) -{ - if (state) - serial_putcmd(VT100_CURSOR_ON); - else - serial_putcmd(VT100_CURSOR_OFF); -} |