diff options
Diffstat (limited to 'sys/arm/at91/uart_cpu_at91rm9200usart.c')
| -rw-r--r-- | sys/arm/at91/uart_cpu_at91rm9200usart.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/sys/arm/at91/uart_cpu_at91rm9200usart.c b/sys/arm/at91/uart_cpu_at91rm9200usart.c new file mode 100644 index 0000000..2af5e2e --- /dev/null +++ b/sys/arm/at91/uart_cpu_at91rm9200usart.c @@ -0,0 +1,87 @@ +/*- + * Copyright (c) 2003 Marcel Moolenaar + * All rights reserved. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 "opt_uart.h" + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bus.h> +#include <sys/cons.h> +#include <machine/bus.h> + +#include <dev/uart/uart.h> +#include <dev/uart/uart_cpu.h> + +#include <arm/at91/at91rm92reg.h> + +bus_space_tag_t uart_bus_space_io; +bus_space_tag_t uart_bus_space_mem; + +extern struct uart_ops at91_usart_ops; +extern struct bus_space at91_bs_tag; + +int +uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2) +{ + return ((b1->bsh == b2->bsh && b1->bst == b2->bst) ? 1 : 0); +} + +int +uart_cpu_getdev(int devtype, struct uart_devinfo *di) +{ + di->ops = at91_usart_ops; + di->bas.chan = 0; + di->bas.bst = &at91_bs_tag; + /* + * XXX: Not pretty, but will work because we map VA == PA early + * for the last 1MB of memory. + */ +#ifdef USART0_CONSOLE + di->bas.bsh = AT91RM92_BASE + AT91RM92_USART0_BASE; + di->bas.chan = 1; + di->baudrate = 38400; +#else + di->bas.bsh = AT91RM92_BASE + AT91RM92_SYS_BASE + DBGU; + di->bas.chan = 0; + di->baudrate = 115200; +#endif + di->bas.regshft = 0; + di->bas.rclk = 0; + di->databits = 8; + di->stopbits = 1; + di->parity = UART_PARITY_NONE; + /* Check the environment for overrides */ + if (uart_getenv(devtype, di) == 0) + return (0); + + uart_bus_space_io = &at91_bs_tag; + uart_bus_space_mem = NULL; + + return (0); +} |
