1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 1994-1998 Mark Brinicombe. 5 * Copyright (c) 1994 Brini. 6 * All rights reserved. 7 * 8 * This code is derived from software written for Brini by Mark Brinicombe 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by Brini. 21 * 4. The name of the company nor the name of the author may be used to 22 * endorse or promote products derived from this software without specific 23 * prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED 26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 28 * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 29 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 30 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 31 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45 38 */ 39 40 #include "opt_platform.h" 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/bus.h> 45 #include <sys/devmap.h> 46 47 #include <vm/vm.h> 48 #include <vm/pmap.h> 49 50 #include <machine/bus.h> 51 #include <machine/machdep.h> 52 #include <machine/platformvar.h> 53 54 #include <arm/ti/ti_cpuid.h> 55 56 #include "platform_if.h" 57 58 #if defined(SOC_TI_AM335X) 59 static platform_attach_t ti_am335x_attach; 60 static platform_devmap_init_t ti_am335x_devmap_init; 61 #endif 62 static platform_cpu_reset_t ti_plat_cpu_reset; 63 64 void (*ti_cpu_reset)(void) = NULL; 65 66 int _ti_chip = -1; 67 68 #if defined(SOC_TI_AM335X) 69 static int 70 ti_am335x_attach(platform_t plat) 71 { 72 _ti_chip = CHIP_AM335X; 73 return (0); 74 } 75 #endif 76 77 /* 78 * Construct static devmap entries to map out the most frequently used 79 * peripherals using 1mb section mappings. 80 */ 81 #if defined(SOC_TI_AM335X) 82 static int 83 ti_am335x_devmap_init(platform_t plat) 84 { 85 86 devmap_add_entry(0x44C00000, 0x00400000); /* 4mb L4_WKUP devices*/ 87 devmap_add_entry(0x47400000, 0x00100000); /* 1mb USB */ 88 devmap_add_entry(0x47800000, 0x00100000); /* 1mb mmchs2 */ 89 devmap_add_entry(0x48000000, 0x01000000); /*16mb L4_PER devices */ 90 devmap_add_entry(0x49000000, 0x00100000); /* 1mb edma3 */ 91 devmap_add_entry(0x49800000, 0x00300000); /* 3mb edma3 */ 92 devmap_add_entry(0x4A000000, 0x01000000); /*16mb L4_FAST devices*/ 93 return (0); 94 } 95 #endif 96 97 static void 98 ti_plat_cpu_reset(platform_t plat) 99 { 100 if (ti_cpu_reset) 101 (*ti_cpu_reset)(); 102 else 103 printf("no cpu_reset implementation\n"); 104 } 105 106 #if defined(SOC_TI_AM335X) 107 static platform_method_t am335x_methods[] = { 108 PLATFORMMETHOD(platform_attach, ti_am335x_attach), 109 PLATFORMMETHOD(platform_devmap_init, ti_am335x_devmap_init), 110 PLATFORMMETHOD(platform_cpu_reset, ti_plat_cpu_reset), 111 112 PLATFORMMETHOD_END, 113 }; 114 115 FDT_PLATFORM_DEF(am335x, "am335x", 0, "ti,am33xx", 200); 116 #endif 117