1/*- 2 * Copyright (c) 2013 Ruslan Bukin <br@bsdpad.com> 3 * Copyright (c) 2015 Semihalf 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 */ 28 29#include <sys/cdefs.h> 30__FBSDID("$FreeBSD: stable/11/sys/arm/annapurna/alpine/alpine_machdep.c 314506 2017-03-01 19:55:04Z ian $"); 31 32#include <sys/param.h> 33#include <sys/systm.h> 34#include <sys/bus.h> 35#include <sys/lock.h> 36#include <sys/mutex.h> 37#include <sys/devmap.h> 38 39#include <vm/vm.h> 40#include <vm/pmap.h> 41 42#include <machine/bus.h> 43#include <machine/frame.h> /* For trapframe_t, used in <machine/machdep.h> */ 44#include <machine/machdep.h> 45#include <machine/platform.h> 46#include <machine/fdt.h> 47 48#include <dev/fdt/fdt_common.h> 49 50#include "opt_ddb.h" 51#include "opt_platform.h" 52 53struct mtx al_dbg_lock; 54 55#define DEVMAP_MAX_VA_ADDRESS 0xF0000000 56bus_addr_t al_devmap_pa; 57bus_addr_t al_devmap_size; 58 59#define AL_NB_SERVICE_OFFSET 0x70000 60#define AL_NB_CCU_OFFSET 0x90000 61#define AL_CCU_SNOOP_CONTROL_IOFAB_0_OFFSET 0x4000 62#define AL_CCU_SNOOP_CONTROL_IOFAB_1_OFFSET 0x5000 63#define AL_CCU_SPECULATION_CONTROL_OFFSET 0x4 64 65#define AL_NB_ACF_MISC_OFFSET 0xD0 66#define AL_NB_ACF_MISC_READ_BYPASS (1 << 30) 67 68int alpine_get_devmap_base(bus_addr_t *pa, bus_addr_t *size); 69 70vm_offset_t 71platform_lastaddr(void) 72{ 73 74 return (DEVMAP_MAX_VA_ADDRESS); 75} 76 77void 78platform_probe_and_attach(void) 79{ 80 81} 82 83void 84platform_gpio_init(void) 85{ 86 87} 88 89void 90platform_late_init(void) 91{ 92 bus_addr_t reg_baddr; 93 uint32_t val; 94 95 if (!mtx_initialized(&al_dbg_lock)) 96 mtx_init(&al_dbg_lock, "ALDBG", "ALDBG", MTX_SPIN); 97 98 /* configure system fabric */ 99 if (bus_space_map(fdtbus_bs_tag, al_devmap_pa, al_devmap_size, 0, 100 ®_baddr)) 101 panic("Couldn't map Register Space area"); 102 103 /* do not allow reads to bypass writes to different addresses */ 104 val = bus_space_read_4(fdtbus_bs_tag, reg_baddr, 105 AL_NB_SERVICE_OFFSET + AL_NB_ACF_MISC_OFFSET); 106 val &= ~AL_NB_ACF_MISC_READ_BYPASS; 107 bus_space_write_4(fdtbus_bs_tag, reg_baddr, 108 AL_NB_SERVICE_OFFSET + AL_NB_ACF_MISC_OFFSET, val); 109 110 /* enable cache snoop */ 111 bus_space_write_4(fdtbus_bs_tag, reg_baddr, 112 AL_NB_CCU_OFFSET + AL_CCU_SNOOP_CONTROL_IOFAB_0_OFFSET, 1); 113 bus_space_write_4(fdtbus_bs_tag, reg_baddr, 114 AL_NB_CCU_OFFSET + AL_CCU_SNOOP_CONTROL_IOFAB_1_OFFSET, 1); 115 116 /* disable speculative fetches from masters */ 117 bus_space_write_4(fdtbus_bs_tag, reg_baddr, 118 AL_NB_CCU_OFFSET + AL_CCU_SPECULATION_CONTROL_OFFSET, 7); 119 120 bus_space_unmap(fdtbus_bs_tag, reg_baddr, al_devmap_size); 121} 122 123/* 124 * Construct devmap table with DT-derived config data. 125 */ 126int 127platform_devmap_init(void) 128{ 129 alpine_get_devmap_base(&al_devmap_pa, &al_devmap_size); 130 devmap_add_entry(al_devmap_pa, al_devmap_size); 131 return (0); 132} 133