obs600_machdep.c revision 1.15
1 /* $NetBSD: obs600_machdep.c,v 1.15 2021/03/30 04:28:50 rin Exp $ */ 2 /* Original: md_machdep.c,v 1.3 2005/01/24 18:47:37 shige Exp $ */ 3 4 /* 5 * Copyright 2001, 2002 Wasabi Systems, Inc. 6 * All rights reserved. 7 * 8 * Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc. 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 for the NetBSD Project by 21 * Wasabi Systems, Inc. 22 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 23 * or promote products derived from this software without specific prior 24 * written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 41 * Copyright (C) 1995, 1996 TooLs GmbH. 42 * All rights reserved. 43 * 44 * Redistribution and use in source and binary forms, with or without 45 * modification, are permitted provided that the following conditions 46 * are met: 47 * 1. Redistributions of source code must retain the above copyright 48 * notice, this list of conditions and the following disclaimer. 49 * 2. Redistributions in binary form must reproduce the above copyright 50 * notice, this list of conditions and the following disclaimer in the 51 * documentation and/or other materials provided with the distribution. 52 * 3. All advertising materials mentioning features or use of this software 53 * must display the following acknowledgement: 54 * This product includes software developed by TooLs GmbH. 55 * 4. The name of TooLs GmbH may not be used to endorse or promote products 56 * derived from this software without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 59 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 60 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 61 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 62 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 63 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 64 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 65 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 66 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 67 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 68 */ 69 70 #include <sys/cdefs.h> 71 __KERNEL_RCSID(0, "$NetBSD: obs600_machdep.c,v 1.15 2021/03/30 04:28:50 rin Exp $"); 72 73 #include "opt_ddb.h" 74 75 #include <sys/param.h> 76 #include <sys/bus.h> 77 #include <sys/device.h> 78 #include <sys/errno.h> 79 #include <sys/kernel.h> 80 #include <sys/module.h> 81 #include <sys/reboot.h> 82 #include <sys/systm.h> 83 84 #include <machine/obs600.h> 85 86 #include <powerpc/spr.h> 87 #include <powerpc/ibm4xx/spr.h> 88 89 #include <powerpc/ibm4xx/amcc405ex.h> 90 #include <powerpc/ibm4xx/cpu.h> 91 #include <powerpc/ibm4xx/dcr4xx.h> 92 #include <powerpc/ibm4xx/tlb.h> 93 94 #include <powerpc/ibm4xx/dev/gpiicreg.h> 95 #include <powerpc/ibm4xx/dev/opbvar.h> 96 97 #include "com.h" 98 #if (NCOM > 0) 99 #include <sys/termios.h> 100 #include <powerpc/ibm4xx/dev/comopbvar.h> 101 #include <dev/ic/comreg.h> 102 103 #ifndef CONADDR 104 #define CONADDR AMCC405EX_UART0_BASE 105 #endif 106 #ifndef CONSPEED 107 #define CONSPEED B115200 108 #endif 109 #ifndef CONMODE 110 /* 8N1 */ 111 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) 112 #endif 113 #endif /* NCOM */ 114 115 /* 116 * XXXX: 117 * It is very troublesome though we can calculate from various registers. X-< 118 */ 119 #define OBS600_CPU_FREQ (600 * 1000 * 1000) 120 #define OBS600_MEM_SIZE (1 * 1024 * 1024 * 1024) 121 122 #define TLB_PG_SIZE (16 * 1024 * 1024) 123 124 void initppc(vaddr_t, vaddr_t, int, char *[], char *); 125 static int read_eeprom(int, char *); 126 127 128 void 129 initppc(vaddr_t startkernel, vaddr_t endkernel, int argc, char *argv[], 130 char *argstr) 131 { 132 vaddr_t va; 133 u_int memsize; 134 135 memsize = OBS600_MEM_SIZE; 136 137 /* Linear map kernel memory */ 138 for (va = 0; va < endkernel; va += TLB_PG_SIZE) 139 ppc4xx_tlb_reserve(va, va, TLB_PG_SIZE, TLB_EX); 140 141 /* 142 * Map console and I2C after RAM. (see pmap_tlbmiss()) 143 * All peripherals mapped on a page. 144 */ 145 ppc4xx_tlb_reserve(AMCC405EX_OPB_BASE, roundup(memsize, TLB_PG_SIZE), 146 TLB_PG_SIZE, TLB_I | TLB_G); 147 148 /* Initialize AMCC 405EX CPU */ 149 ibm40x_memsize_init(memsize, startkernel); 150 ibm4xx_init(startkernel, endkernel, pic_ext_intr); 151 152 #ifdef DDB 153 if (boothowto & RB_KDB) 154 Debugger(); 155 #endif 156 157 /* 158 * Look for the ibm4xx modules in the right place. 159 */ 160 module_machine = module_machine_ibm4xx; 161 } 162 163 void 164 consinit(void) 165 { 166 167 #if (NCOM > 0) 168 com_opb_cnattach(OBS600_COM_FREQ, CONADDR, CONSPEED, CONMODE); 169 #endif /* NCOM */ 170 } 171 172 /* 173 * Machine dependent startup code. 174 */ 175 void 176 cpu_startup(void) 177 { 178 prop_number_t pn; 179 prop_data_t pd; 180 u_char *macaddr, *macaddr1; 181 static u_char buf[16]; /* MAC address x2 buffer */ 182 183 /* 184 * cpu common startup 185 */ 186 ibm4xx_cpu_startup("OpenBlockS600 AMCC PowerPC 405EX Board"); 187 188 /* 189 * Set up the board properties database. 190 */ 191 board_info_init(); 192 193 pn = prop_number_create_integer(OBS600_CPU_FREQ); 194 KASSERT(pn != NULL); 195 if (prop_dictionary_set(board_properties, "processor-frequency", pn) == 196 false) 197 panic("setting processor-frequency"); 198 prop_object_release(pn); 199 200 pn = prop_number_create_integer(OBS600_MEM_SIZE); 201 KASSERT(pn != NULL); 202 if (prop_dictionary_set(board_properties, "mem-size", pn) == false) 203 panic("setting mem-size"); 204 prop_object_release(pn); 205 206 calc_delayconst(); /* required by read_eeprom() */ 207 208 #define ETHER_ADDR_LEN 6 209 210 read_eeprom(sizeof(buf), buf); 211 macaddr = &buf[0]; 212 macaddr1 = &buf[8]; 213 214 pd = prop_data_create_data_nocopy(macaddr, ETHER_ADDR_LEN); 215 KASSERT(pd != NULL); 216 if (prop_dictionary_set(board_properties, "emac0-mac-addr", pd) == 217 false) 218 panic("setting emac0-mac-addr"); 219 prop_object_release(pd); 220 pd = prop_data_create_data_nocopy(macaddr1, ETHER_ADDR_LEN); 221 KASSERT(pd != NULL); 222 if (prop_dictionary_set(board_properties, "emac1-mac-addr", pd) == 223 false) 224 panic("setting emac1-mac-addr"); 225 prop_object_release(pd); 226 227 /* emac0 connects to phy 2 and emac1 to phy 3 via RGMII. */ 228 pn = prop_number_create_integer(2); 229 KASSERT(pn != NULL); 230 if (prop_dictionary_set(board_properties, "emac0-mii-phy", pn) == false) 231 panic("setting emac0-mii-phy"); 232 prop_object_release(pn); 233 pn = prop_number_create_integer(3); 234 KASSERT(pn != NULL); 235 if (prop_dictionary_set(board_properties, "emac1-mii-phy", pn) == false) 236 panic("setting emac1-mii-phy"); 237 prop_object_release(pn); 238 239 /* 240 * Now that we have VM, malloc()s are OK in bus_space. 241 */ 242 bus_space_mallocok(); 243 244 /* 245 * no fake mapiodev 246 */ 247 fake_mapiodev = 0; 248 249 splraise(-1); 250 } 251 252 /* 253 * Read EEPROM via I2C. We don't use bus_space(9) here. This is MD-part and, 254 * don't support bus_space_unmap() to a space on reserved space? X-< 255 * 256 * XXXX: Also this function assume already initialized for I2C... 257 */ 258 static int 259 read_eeprom(int len, char *buf) 260 { 261 volatile uint8_t *iic0; 262 #define IIC0_READ(r) (*(iic0 + (r))) 263 #define IIC0_WRITE(r, v) (*(iic0 + (r)) = (v)) 264 uint8_t sts; 265 int cnt, i = 0; 266 267 #define I2C_EEPROM_ADDR 0x52 268 269 if ((iic0 = ppc4xx_tlb_mapiodev(AMCC405EX_IIC0_BASE, IIC_NREG)) == NULL) 270 return ENOMEM; /* ??? */ 271 272 /* Clear Stop Complete Bit */ 273 IIC0_WRITE(IIC_STS, IIC_STS_SCMP); 274 /* Check init */ 275 do { 276 /* Get status */ 277 sts = IIC0_READ(IIC_STS); 278 } while ((sts & IIC_STS_PT)); 279 280 IIC0_WRITE(IIC_MDCNTL, 281 IIC0_READ(IIC_MDCNTL) | IIC_MDCNTL_FMDB | IIC_MDCNTL_FSDB); 282 283 /* 7-bit adressing */ 284 IIC0_WRITE(IIC_HMADR, 0); 285 IIC0_WRITE(IIC_LMADR, I2C_EEPROM_ADDR << 1); 286 287 IIC0_WRITE(IIC_MDBUF, 0); 288 IIC0_WRITE(IIC_CNTL, IIC_CNTL_PT); 289 do { 290 /* Get status */ 291 sts = IIC0_READ(IIC_STS); 292 } while ((sts & IIC_STS_PT) && !(sts & IIC_STS_ERR)); 293 294 cnt = 0; 295 while (cnt < len) { 296 /* always read 4byte */ 297 IIC0_WRITE(IIC_CNTL, 298 IIC_CNTL_PT | 299 IIC_CNTL_RW | 300 ((cnt == 0) ? IIC_CNTL_RPST : 0) | 301 IIC_CNTL_TCT); 302 do { 303 /* Get status */ 304 sts = IIC0_READ(IIC_STS); 305 } while ((sts & IIC_STS_PT) && !(sts & IIC_STS_ERR)); 306 307 if ((sts & IIC_STS_PT) || (sts & IIC_STS_ERR)) 308 break; 309 if (sts & IIC_STS_MDBS) { 310 delay(1); 311 /* read 4byte */ 312 for (i = 0; i < 4 && cnt < len; i++, cnt++) 313 buf[cnt] = IIC0_READ(IIC_MDBUF); 314 } 315 } 316 for ( ; i < 4; i++) 317 (void) IIC0_READ(IIC_MDBUF); 318 319 return (cnt == len) ? 0 : EINVAL; 320 } 321
Indexes created Tue Sep 30 20:09:53 GMT 2025