1/*- 2 * Copyright (c) 1994-1998 Mark Brinicombe. 3 * Copyright (c) 1994 Brini. 4 * All rights reserved. 5 * 6 * This code is derived from software written for Brini by Mark Brinicombe 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Brini. 19 * 4. The name of the company nor the name of the author may be used to 20 * endorse or promote products derived from this software without specific 21 * prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED 24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45 36 */ 37 38#include "opt_ddb.h" 39#include "opt_platform.h" 40 41#include <sys/cdefs.h> 42__FBSDID("$FreeBSD$"); 43 44#define _ARM32_BUS_DMA_PRIVATE 45#include <sys/param.h> 46#include <sys/systm.h> 47#include <sys/bus.h> 48#include <sys/devmap.h> 49 50#include <vm/vm.h> 51#include <vm/pmap.h> 52 53#include <machine/bus.h> 54#include <machine/fdt.h> 55#include <machine/machdep.h> 56#include <machine/platform.h> 57 58#include <arm/lpc/lpcreg.h> 59#include <arm/lpc/lpcvar.h> 60 61#include <dev/fdt/fdt_common.h> 62 63vm_offset_t 64platform_lastaddr(void) 65{ 66 67 return (devmap_lastaddr()); 68} 69 70void 71platform_probe_and_attach(void) 72{ 73} 74 75void 76platform_gpio_init(void) 77{ 78 79 /* 80 * Set initial values of GPIO output ports 81 */ 82 lpc_gpio_init(); 83} 84 85void 86platform_late_init(void) 87{ 88} 89 90/* 91 * Add a single static device mapping. 92 * The values used were taken from the ranges property of the SoC node in the 93 * dts file when this code was converted to devmap_add_entry(). 94 */ 95int 96platform_devmap_init(void) 97{ 98 99 devmap_add_entry(LPC_DEV_PHYS_BASE, LPC_DEV_SIZE); 100 return (0); 101} 102 103struct arm32_dma_range * 104bus_dma_get_range(void) 105{ 106 107 return (NULL); 108} 109 110int 111bus_dma_get_range_nb(void) 112{ 113 114 return (0); 115} 116 117void 118cpu_reset(void) 119{ 120 bus_space_tag_t bst; 121 bus_space_handle_t bsh; 122 123 bst = fdtbus_bs_tag; 124 125 /* Enable WDT */ 126 bus_space_map(bst, LPC_CLKPWR_PHYS_BASE, LPC_CLKPWR_SIZE, 0, &bsh); 127 bus_space_write_4(bst, bsh, LPC_CLKPWR_TIMCLK_CTRL, 128 LPC_CLKPWR_TIMCLK_CTRL_WATCHDOG); 129 bus_space_unmap(bst, bsh, LPC_CLKPWR_SIZE); 130 131 /* Instant assert of RESETOUT_N with pulse length 1ms */ 132 bus_space_map(bst, LPC_WDTIM_PHYS_BASE, LPC_WDTIM_SIZE, 0, &bsh); 133 bus_space_write_4(bst, bsh, LPC_WDTIM_PULSE, 13000); 134 bus_space_write_4(bst, bsh, LPC_WDTIM_MCTRL, 0x70); 135 bus_space_unmap(bst, bsh, LPC_WDTIM_SIZE); 136 137 for (;;) 138 continue; 139} 140 141