1 /* $NetBSD: tegra_soc.c,v 1.8 2015/12/22 22:10:36 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2015 Jared D. McNeill <jmcneill@invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include "opt_tegra.h" 30 #include "opt_multiprocessor.h" 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: tegra_soc.c,v 1.8 2015/12/22 22:10:36 jmcneill Exp $"); 34 35 #define _ARM32_BUS_DMA_PRIVATE 36 #include <sys/param.h> 37 #include <sys/bus.h> 38 #include <sys/cpu.h> 39 #include <sys/device.h> 40 41 #include <uvm/uvm_extern.h> 42 43 #include <arm/bootconfig.h> 44 #include <arm/cpufunc.h> 45 46 #include <arm/nvidia/tegra_reg.h> 47 #include <arm/nvidia/tegra_apbreg.h> 48 #include <arm/nvidia/tegra_mcreg.h> 49 #include <arm/nvidia/tegra_var.h> 50 51 bus_space_handle_t tegra_ppsb_bsh; 52 bus_space_handle_t tegra_apb_bsh; 53 54 struct arm32_bus_dma_tag tegra_dma_tag = { 55 _BUS_DMAMAP_FUNCS, 56 _BUS_DMAMEM_FUNCS, 57 _BUS_DMATAG_FUNCS, 58 }; 59 60 static void tegra_mpinit(void); 61 62 void 63 tegra_bootstrap(void) 64 { 65 if (bus_space_map(&armv7_generic_bs_tag, 66 TEGRA_PPSB_BASE, TEGRA_PPSB_SIZE, 0, 67 &tegra_ppsb_bsh) != 0) 68 panic("couldn't map PPSB"); 69 if (bus_space_map(&armv7_generic_bs_tag, 70 TEGRA_APB_BASE, TEGRA_APB_SIZE, 0, 71 &tegra_apb_bsh) != 0) 72 panic("couldn't map APB"); 73 74 tegra_mpinit(); 75 } 76 77 void 78 tegra_dma_bootstrap(psize_t psize) 79 { 80 } 81 82 void 83 tegra_cpuinit(void) 84 { 85 switch (tegra_chip_id()) { 86 #ifdef SOC_TEGRA124 87 case CHIP_ID_TEGRA124: 88 tegra124_cpuinit(); 89 break; 90 #endif 91 } 92 93 tegra_cpufreq_init(); 94 } 95 96 static void 97 tegra_mpinit(void) 98 { 99 #if defined(MULTIPROCESSOR) 100 switch (tegra_chip_id()) { 101 #ifdef SOC_TEGRA124 102 case CHIP_ID_TEGRA124: 103 tegra124_mpinit(); 104 break; 105 #endif 106 default: 107 panic("Unsupported SOC ID %#x", tegra_chip_id()); 108 } 109 #endif 110 } 111 112 u_int 113 tegra_chip_id(void) 114 { 115 static u_int chip_id = 0; 116 117 if (!chip_id) { 118 const bus_space_tag_t bst = &armv7_generic_bs_tag; 119 const bus_space_handle_t bsh = tegra_apb_bsh; 120 const uint32_t v = bus_space_read_4(bst, bsh, 121 APB_MISC_GP_HIDREV_0_REG); 122 chip_id = __SHIFTOUT(v, APB_MISC_GP_HIDREV_0_CHIPID); 123 } 124 125 return chip_id; 126 } 127 128 const char * 129 tegra_chip_name(void) 130 { 131 switch (tegra_chip_id()) { 132 case CHIP_ID_TEGRA124: return "Tegra K1 (T124)"; 133 case CHIP_ID_TEGRA132: return "Tegra K1 (T132)"; 134 default: return "Unknown Tegra SoC"; 135 } 136 } 137