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author | imp <imp@FreeBSD.org> | 2008-11-25 19:05:46 +0000 |
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committer | imp <imp@FreeBSD.org> | 2008-11-25 19:05:46 +0000 |
commit | e8a7024ad98e5a83d587ffbf6f5849d40d809502 (patch) | |
tree | 73f30747923b1fc18ae278675332e75e1a2a6bfb /sys/arm/at91/board_bwct.c | |
parent | 844f052f71e670d4e9dcc6d2d218203fd9c25055 (diff) | |
download | FreeBSD-src-e8a7024ad98e5a83d587ffbf6f5849d40d809502.zip FreeBSD-src-e8a7024ad98e5a83d587ffbf6f5849d40d809502.tar.gz |
Convert BWCT and HL200 over to new board mechanism as well. The
TSC4370 config file wasn't committed to this tree, so I don't know if
my changes will work on it or not.
Diffstat (limited to 'sys/arm/at91/board_bwct.c')
-rw-r--r-- | sys/arm/at91/board_bwct.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/sys/arm/at91/board_bwct.c b/sys/arm/at91/board_bwct.c new file mode 100644 index 0000000..d82ffc1 --- /dev/null +++ b/sys/arm/at91/board_bwct.c @@ -0,0 +1,66 @@ +/*- + * Copyright (c) 2005-2008 Olivier Houchard. All rights reserved. + * Copyright (c) 2005-2008 Warner Losh. 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 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 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 <sys/cdefs.h> +__FBSDID("$FreeBSD$"); +#include <sys/param.h> +#include <sys/systm.h> + +#include <arm/at91/at91board.h> +#include <arm/at91/at91rm92reg.h> +#include <arm/at91/at91_piovar.h> +#include <arm/at91/at91_pio_rm9200.h> + +long +board_init(void) +{ + /* + * Since the USART supports RS-485 multidrop mode, it allows the + * TX pins to float. However, for RS-232 operations, we don't want + * these pins to float. Instead, they should be pulled up to avoid + * mismatches. Linux does something similar when it configures the + * TX lines. This implies that we also allow the RX lines to float + * rather than be in the state they are left in by the boot loader. + * Since they are input pins, I think that this is the right thing + * to do. + */ + + /* PIOA's A periph: Turn USART 0 and 2's TX/RX pins */ + at91_pio_use_periph_a(AT91RM92_PIOA_BASE, + AT91C_PA18_RXD0 | AT91C_PA22_RXD2, 0); + at91_pio_use_periph_a(AT91RM92_PIOA_BASE, + AT91C_PA17_TXD0 | AT91C_PA23_TXD2, 1); + /* PIOA's B periph: Turn USART 3's TX/RX pins */ + at91_pio_use_periph_b(AT91RM92_PIOA_BASE, AT91C_PA6_RXD3, 0); + at91_pio_use_periph_b(AT91RM92_PIOA_BASE, AT91C_PA5_TXD3, 1); + /* PIOB's A periph: Turn USART 1's TX/RX pins */ + at91_pio_use_periph_a(AT91RM92_PIOB_BASE, AT91C_PB21_RXD1, 0); + at91_pio_use_periph_a(AT91RM92_PIOB_BASE, AT91C_PB20_TXD1, 1); + + /* Pin assignment */ + + return (at91_ramsize()); +} |