diff options
Diffstat (limited to 'drivers/arm/pl011/pl011_console.c')
| -rw-r--r-- | drivers/arm/pl011/pl011_console.c | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/drivers/arm/pl011/pl011_console.c b/drivers/arm/pl011/pl011_console.c deleted file mode 100644 index 81897cab..00000000 --- a/drivers/arm/pl011/pl011_console.c +++ /dev/null @@ -1,98 +0,0 @@ -/* - * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * 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. - * - * Neither the name of ARM 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 HOLDER 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 <assert.h> -#include <console.h> -#include <pl011.h> - -static unsigned long uart_base; - -void console_init(unsigned long base_addr) -{ - /* TODO: assert() internally calls printf() and will result in - * an infinite loop. This needs to be fixed with some kind of - * exception mechanism or early panic support. This also applies - * to the other assert() calls below. - */ - assert(base_addr); - - /* Initialise internal base address variable */ - uart_base = base_addr; - - /* Baud Rate */ -#if defined(PL011_INTEGER) && defined(PL011_FRACTIONAL) - pl011_write_ibrd(uart_base, PL011_INTEGER); - pl011_write_fbrd(uart_base, PL011_FRACTIONAL); -#else - pl011_setbaudrate(uart_base, PL011_BAUDRATE); -#endif - - pl011_write_lcr_h(uart_base, PL011_LINE_CONTROL); - - /* Clear any pending errors */ - pl011_write_ecr(uart_base, 0); - - /* Enable tx, rx, and uart overall */ - pl011_write_cr(uart_base, PL011_UARTCR_RXE | PL011_UARTCR_TXE | - PL011_UARTCR_UARTEN); - -} - -#define WAIT_UNTIL_UART_FREE(base) \ - while ((pl011_read_fr(base) & PL011_UARTFR_TXFF)) \ - continue - -int console_putc(int c) -{ - /* If the console has not been initialized then return an error - * code. Asserting here would result in recursion and stack - * exhaustion - */ - if (!uart_base) - return -1; - - if (c == '\n') { - WAIT_UNTIL_UART_FREE(uart_base); - pl011_write_dr(uart_base, '\r'); - } - - WAIT_UNTIL_UART_FREE(uart_base); - pl011_write_dr(uart_base, c); - return c; -} - -int console_getc(void) -{ - assert(uart_base); - - while ((pl011_read_fr(uart_base) & PL011_UARTFR_RXFE) != 0) - ; - return pl011_read_dr(uart_base); -} |