board_eb9200.c revision 238415
1155324Simp/*- 2185305Simp * Copyright (c) 2005-2008 Olivier Houchard. All rights reserved. 3238415Simp * Copyright (c) 2005-2012 Warner Losh. All rights reserved. 4155324Simp * 5155324Simp * Redistribution and use in source and binary forms, with or without 6155324Simp * modification, are permitted provided that the following conditions 7155324Simp * are met: 8155324Simp * 1. Redistributions of source code must retain the above copyright 9155324Simp * notice, this list of conditions and the following disclaimer. 10155324Simp * 2. Redistributions in binary form must reproduce the above copyright 11155324Simp * notice, this list of conditions and the following disclaimer in the 12155324Simp * documentation and/or other materials provided with the distribution. 13155324Simp * 14185305Simp * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15185305Simp * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16185305Simp * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17185305Simp * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 18185305Simp * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19185305Simp * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20185305Simp * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21155324Simp * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22155324Simp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23155324Simp * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24155324Simp * SUCH DAMAGE. 25155324Simp */ 26155324Simp 27155324Simp#include <sys/cdefs.h> 28155324Simp__FBSDID("$FreeBSD: head/sys/arm/at91/board_kb920x.c 238415 2012-07-13 04:22:08Z imp $"); 29155324Simp#include <sys/param.h> 30155324Simp#include <sys/systm.h> 31155324Simp 32238189Simp#include <machine/board.h> 33238415Simp#include <arm/at91/at91board.h> 34213496Scognet#include <arm/at91/at91var.h> 35155324Simp#include <arm/at91/at91rm92reg.h> 36238415Simp#include <arm/at91/at91rm9200var.h> 37160363Simp#include <arm/at91/at91_piovar.h> 38160363Simp#include <arm/at91/at91_pio_rm9200.h> 39155324Simp 40238189SimpBOARD_INIT long 41160363Simpboard_init(void) 42160363Simp{ 43238415Simp 44238415Simp at91rm9200_set_subtype(AT91_ST_RM9200_PQFP); 45238415Simp 46160363Simp /* 47174880Sstas * Since the USART supports RS-485 multidrop mode, it allows the 48160363Simp * TX pins to float. However, for RS-232 operations, we don't want 49160363Simp * these pins to float. Instead, they should be pulled up to avoid 50160363Simp * mismatches. Linux does something similar when it configures the 51160363Simp * TX lines. This implies that we also allow the RX lines to float 52160363Simp * rather than be in the state they are left in by the boot loader. 53160363Simp * Since they are input pins, I think that this is the right thing 54160363Simp * to do. 55160363Simp */ 56160363Simp /* PIOA's A periph: Turn USART 0 and 2's TX/RX pins */ 57160363Simp at91_pio_use_periph_a(AT91RM92_PIOA_BASE, 58160363Simp AT91C_PA18_RXD0 | AT91C_PA22_RXD2, 0); 59160363Simp at91_pio_use_periph_a(AT91RM92_PIOA_BASE, 60160363Simp AT91C_PA17_TXD0 | AT91C_PA23_TXD2, 1); 61160363Simp /* PIOA's B periph: Turn USART 3's TX/RX pins */ 62160363Simp at91_pio_use_periph_b(AT91RM92_PIOA_BASE, AT91C_PA6_RXD3, 0); 63160363Simp at91_pio_use_periph_b(AT91RM92_PIOA_BASE, AT91C_PA5_TXD3, 1); 64160363Simp /* PIOB's A periph: Turn USART 1's TX/RX pins */ 65160363Simp at91_pio_use_periph_a(AT91RM92_PIOB_BASE, AT91C_PB21_RXD1, 0); 66160363Simp at91_pio_use_periph_a(AT91RM92_PIOB_BASE, AT91C_PB20_TXD1, 1); 67160363Simp 68213496Scognet /* MMC/SD Interface */ 69213496Scognet at91_pio_use_periph_a(AT91RM92_PIOA_BASE,AT91C_PA27_MCCK, 0); 70213496Scognet at91_pio_use_periph_a(AT91RM92_PIOA_BASE,AT91C_PA28_MCCDA, 1); 71213496Scognet at91_pio_use_periph_a(AT91RM92_PIOA_BASE,AT91C_PA29_MCDA0, 1); 72213496Scognet at91_pio_use_periph_b(AT91RM92_PIOB_BASE,AT91C_PB3_MCDA1, 1); 73213496Scognet at91_pio_use_periph_b(AT91RM92_PIOB_BASE,AT91C_PB4_MCDA2, 1); 74213496Scognet at91_pio_use_periph_b(AT91RM92_PIOB_BASE,AT91C_PB5_MCDA3, 1); 75213496Scognet 76185305Simp return (at91_ramsize()); 77160363Simp} 78238189Simp 79238189SimpARM_BOARD(KB9200, "Kwikbyte KB920x") 80