lpc_machdep.c revision 257199
1169691Skan/*- 2169691Skan * Copyright (c) 1994-1998 Mark Brinicombe. 3169691Skan * Copyright (c) 1994 Brini. 4169691Skan * All rights reserved. 5169691Skan * 6169691Skan * This code is derived from software written for Brini by Mark Brinicombe 7169691Skan * 8169691Skan * Redistribution and use in source and binary forms, with or without 9169691Skan * modification, are permitted provided that the following conditions 10169691Skan * are met: 11169691Skan * 1. Redistributions of source code must retain the above copyright 12169691Skan * notice, this list of conditions and the following disclaimer. 13169691Skan * 2. Redistributions in binary form must reproduce the above copyright 14169691Skan * notice, this list of conditions and the following disclaimer in the 15169691Skan * documentation and/or other materials provided with the distribution. 16169691Skan * 3. All advertising materials mentioning features or use of this software 17169691Skan * must display the following acknowledgement: 18169691Skan * This product includes software developed by Brini. 19169691Skan * 4. The name of the company nor the name of the author may be used to 20169691Skan * endorse or promote products derived from this software without specific 21169691Skan * prior written permission. 22169691Skan * 23169691Skan * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED 24169691Skan * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 25169691Skan * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26169691Skan * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 27169691Skan * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 28169691Skan * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 29169691Skan * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30169691Skan * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31169691Skan * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32169691Skan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33169691Skan * SUCH DAMAGE. 34169691Skan * 35169691Skan * from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45 36169691Skan */ 37169691Skan 38169691Skan#include "opt_ddb.h" 39169691Skan#include "opt_platform.h" 40169691Skan 41169691Skan#include <sys/cdefs.h> 42169691Skan__FBSDID("$FreeBSD: head/sys/arm/lpc/lpc_machdep.c 257199 2013-10-27 00:51:46Z ian $"); 43169691Skan 44169691Skan#define _ARM32_BUS_DMA_PRIVATE 45169691Skan#include <sys/param.h> 46169691Skan#include <sys/systm.h> 47169691Skan#include <sys/bus.h> 48169691Skan 49169691Skan#include <vm/vm.h> 50169691Skan#include <vm/pmap.h> 51169691Skan 52169691Skan#include <machine/bus.h> 53169691Skan#include <machine/frame.h> /* For trapframe_t, used in <machine/machdep.h> */ 54169691Skan#include <machine/machdep.h> 55169691Skan 56169691Skan#include <arm/lpc/lpcreg.h> 57169691Skan#include <arm/lpc/lpcvar.h> 58169691Skan 59169691Skan#include <dev/fdt/fdt_common.h> 60169691Skan#include <dev/ic/ns16550.h> 61169691Skan 62169691Skanvm_offset_t 63169691Skaninitarm_lastaddr(void) 64169691Skan{ 65169691Skan 66169691Skan if (fdt_immr_addr(LPC_DEV_BASE) != 0) 67169691Skan while (1); 68169691Skan 69169691Skan /* Platform-specific initialisation */ 70169691Skan return (fdt_immr_va - ARM_NOCACHE_KVA_SIZE); 71169691Skan} 72169691Skan 73169691Skanvoid 74169691Skaninitarm_gpio_init(void) 75169691Skan{ 76169691Skan 77169691Skan /* 78169691Skan * Set initial values of GPIO output ports 79169691Skan */ 80169691Skan platform_gpio_init(); 81169691Skan} 82169691Skan 83169691Skanvoid 84169691Skaninitarm_late_init(void) 85169691Skan{ 86169691Skan} 87169691Skan 88169691Skan#define FDT_DEVMAP_MAX (1 + 2 + 1 + 1) 89169691Skanstatic struct pmap_devmap fdt_devmap[FDT_DEVMAP_MAX] = { 90169691Skan { 0, 0, 0, 0, 0, } 91169691Skan}; 92169691Skan 93169691Skan/* 94169691Skan * Construct pmap_devmap[] with DT-derived config data. 95169691Skan */ 96169691Skanint 97169691Skanplatform_devmap_init(void) 98169691Skan{ 99169691Skan 100169691Skan /* 101169691Skan * IMMR range. 102169691Skan */ 103169691Skan fdt_devmap[0].pd_va = fdt_immr_va; 104169691Skan fdt_devmap[0].pd_pa = fdt_immr_pa; 105169691Skan fdt_devmap[0].pd_size = fdt_immr_size; 106169691Skan fdt_devmap[0].pd_prot = VM_PROT_READ | VM_PROT_WRITE; 107169691Skan fdt_devmap[0].pd_cache = PTE_NOCACHE; 108169691Skan 109169691Skan pmap_devmap_bootstrap_table = &fdt_devmap[0]; 110169691Skan return (0); 111169691Skan} 112169691Skan 113169691Skanstruct arm32_dma_range * 114169691Skanbus_dma_get_range(void) 115169691Skan{ 116169691Skan 117169691Skan return (NULL); 118169691Skan} 119169691Skan 120169691Skanint 121169691Skanbus_dma_get_range_nb(void) 122169691Skan{ 123169691Skan 124169691Skan return (0); 125169691Skan} 126169691Skan 127169691Skanvoid 128169691Skancpu_reset(void) 129169691Skan{ 130169691Skan /* Enable WDT */ 131169691Skan bus_space_write_4(fdtbus_bs_tag, 132 LPC_CLKPWR_BASE, LPC_CLKPWR_TIMCLK_CTRL, 133 LPC_CLKPWR_TIMCLK_CTRL_WATCHDOG); 134 135 /* Instant assert of RESETOUT_N with pulse length 1ms */ 136 bus_space_write_4(fdtbus_bs_tag, LPC_WDTIM_BASE, LPC_WDTIM_PULSE, 13000); 137 bus_space_write_4(fdtbus_bs_tag, LPC_WDTIM_BASE, LPC_WDTIM_MCTRL, 0x70); 138 139 for (;;); 140} 141 142