1 /* 2 * Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org> 3 * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org> 4 * Copyright (C) 2006 Michael Buesch <m@bues.ch> 5 * Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org> 6 * Copyright (C) 2010-2011 Hauke Mehrtens <hauke@hauke-m.de> 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License as published by the 10 * Free Software Foundation; either version 2 of the License, or (at your 11 * option) any later version. 12 * 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 14 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 15 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 16 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 19 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 * 24 * You should have received a copy of the GNU General Public License along 25 * with this program; if not, write to the Free Software Foundation, Inc., 26 * 675 Mass Ave, Cambridge, MA 02139, USA. 27 */ 28 29 #include <linux/export.h> 30 #include <linux/types.h> 31 #include <linux/ssb/ssb.h> 32 #include <linux/ssb/ssb_embedded.h> 33 #include <linux/bcma/bcma_soc.h> 34 #include <asm/bootinfo.h> 35 #include <asm/reboot.h> 36 #include <asm/time.h> 37 #include <bcm47xx.h> 38 #include <asm/mach-bcm47xx/nvram.h> 39 40 union bcm47xx_bus bcm47xx_bus; 41 EXPORT_SYMBOL(bcm47xx_bus); 42 43 enum bcm47xx_bus_type bcm47xx_bus_type; 44 EXPORT_SYMBOL(bcm47xx_bus_type); 45 46 static void bcm47xx_machine_restart(char *command) 47 { 48 printk(KERN_ALERT "Please stand by while rebooting the system...\n"); 49 local_irq_disable(); 50 /* Set the watchdog timer to reset immediately */ 51 switch (bcm47xx_bus_type) { 52 #ifdef CONFIG_BCM47XX_SSB 53 case BCM47XX_BUS_TYPE_SSB: 54 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1); 55 break; 56 #endif 57 #ifdef CONFIG_BCM47XX_BCMA 58 case BCM47XX_BUS_TYPE_BCMA: 59 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 1); 60 break; 61 #endif 62 } 63 while (1) 64 cpu_relax(); 65 } 66 67 static void bcm47xx_machine_halt(void) 68 { 69 /* Disable interrupts and watchdog and spin forever */ 70 local_irq_disable(); 71 switch (bcm47xx_bus_type) { 72 #ifdef CONFIG_BCM47XX_SSB 73 case BCM47XX_BUS_TYPE_SSB: 74 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0); 75 break; 76 #endif 77 #ifdef CONFIG_BCM47XX_BCMA 78 case BCM47XX_BUS_TYPE_BCMA: 79 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 0); 80 break; 81 #endif 82 } 83 while (1) 84 cpu_relax(); 85 } 86 87 #ifdef CONFIG_BCM47XX_SSB 88 #define READ_FROM_NVRAM(_outvar, name, buf) \ 89 if (nvram_getprefix(prefix, name, buf, sizeof(buf)) >= 0)\ 90 sprom->_outvar = simple_strtoul(buf, NULL, 0); 91 92 #define READ_FROM_NVRAM2(_outvar, name1, name2, buf) \ 93 if (nvram_getprefix(prefix, name1, buf, sizeof(buf)) >= 0 || \ 94 nvram_getprefix(prefix, name2, buf, sizeof(buf)) >= 0)\ 95 sprom->_outvar = simple_strtoul(buf, NULL, 0); 96 97 static inline int nvram_getprefix(const char *prefix, char *name, 98 char *buf, int len) 99 { 100 if (prefix) { 101 char key[100]; 102 103 snprintf(key, sizeof(key), "%s%s", prefix, name); 104 return nvram_getenv(key, buf, len); 105 } 106 107 return nvram_getenv(name, buf, len); 108 } 109 110 static u32 nvram_getu32(const char *name, char *buf, int len) 111 { 112 int rv; 113 char key[100]; 114 u16 var0, var1; 115 116 snprintf(key, sizeof(key), "%s0", name); 117 rv = nvram_getenv(key, buf, len); 118 /* return 0 here so this looks like unset */ 119 if (rv < 0) 120 return 0; 121 var0 = simple_strtoul(buf, NULL, 0); 122 123 snprintf(key, sizeof(key), "%s1", name); 124 rv = nvram_getenv(key, buf, len); 125 if (rv < 0) 126 return 0; 127 var1 = simple_strtoul(buf, NULL, 0); 128 return var1 << 16 | var0; 129 } 130 131 static void bcm47xx_fill_sprom(struct ssb_sprom *sprom, const char *prefix) 132 { 133 char buf[100]; 134 u32 boardflags; 135 136 memset(sprom, 0, sizeof(struct ssb_sprom)); 137 138 sprom->revision = 1; /* Fallback: Old hardware does not define this. */ 139 READ_FROM_NVRAM(revision, "sromrev", buf); 140 if (nvram_getprefix(prefix, "il0macaddr", buf, sizeof(buf)) >= 0 || 141 nvram_getprefix(prefix, "macaddr", buf, sizeof(buf)) >= 0) 142 nvram_parse_macaddr(buf, sprom->il0mac); 143 if (nvram_getprefix(prefix, "et0macaddr", buf, sizeof(buf)) >= 0) 144 nvram_parse_macaddr(buf, sprom->et0mac); 145 if (nvram_getprefix(prefix, "et1macaddr", buf, sizeof(buf)) >= 0) 146 nvram_parse_macaddr(buf, sprom->et1mac); 147 READ_FROM_NVRAM(et0phyaddr, "et0phyaddr", buf); 148 READ_FROM_NVRAM(et1phyaddr, "et1phyaddr", buf); 149 READ_FROM_NVRAM(et0mdcport, "et0mdcport", buf); 150 READ_FROM_NVRAM(et1mdcport, "et1mdcport", buf); 151 READ_FROM_NVRAM(board_rev, "boardrev", buf); 152 READ_FROM_NVRAM(country_code, "ccode", buf); 153 READ_FROM_NVRAM(ant_available_a, "aa5g", buf); 154 READ_FROM_NVRAM(ant_available_bg, "aa2g", buf); 155 READ_FROM_NVRAM(pa0b0, "pa0b0", buf); 156 READ_FROM_NVRAM(pa0b1, "pa0b1", buf); 157 READ_FROM_NVRAM(pa0b2, "pa0b2", buf); 158 READ_FROM_NVRAM(pa1b0, "pa1b0", buf); 159 READ_FROM_NVRAM(pa1b1, "pa1b1", buf); 160 READ_FROM_NVRAM(pa1b2, "pa1b2", buf); 161 READ_FROM_NVRAM(pa1lob0, "pa1lob0", buf); 162 READ_FROM_NVRAM(pa1lob2, "pa1lob1", buf); 163 READ_FROM_NVRAM(pa1lob1, "pa1lob2", buf); 164 READ_FROM_NVRAM(pa1hib0, "pa1hib0", buf); 165 READ_FROM_NVRAM(pa1hib2, "pa1hib1", buf); 166 READ_FROM_NVRAM(pa1hib1, "pa1hib2", buf); 167 READ_FROM_NVRAM2(gpio0, "ledbh0", "wl0gpio0", buf); 168 READ_FROM_NVRAM2(gpio1, "ledbh1", "wl0gpio1", buf); 169 READ_FROM_NVRAM2(gpio2, "ledbh2", "wl0gpio2", buf); 170 READ_FROM_NVRAM2(gpio3, "ledbh3", "wl0gpio3", buf); 171 READ_FROM_NVRAM2(maxpwr_bg, "maxp2ga0", "pa0maxpwr", buf); 172 READ_FROM_NVRAM2(maxpwr_al, "maxp5gla0", "pa1lomaxpwr", buf); 173 READ_FROM_NVRAM2(maxpwr_a, "maxp5ga0", "pa1maxpwr", buf); 174 READ_FROM_NVRAM2(maxpwr_ah, "maxp5gha0", "pa1himaxpwr", buf); 175 READ_FROM_NVRAM2(itssi_bg, "itt5ga0", "pa0itssit", buf); 176 READ_FROM_NVRAM2(itssi_a, "itt2ga0", "pa1itssit", buf); 177 READ_FROM_NVRAM(tri2g, "tri2g", buf); 178 READ_FROM_NVRAM(tri5gl, "tri5gl", buf); 179 READ_FROM_NVRAM(tri5g, "tri5g", buf); 180 READ_FROM_NVRAM(tri5gh, "tri5gh", buf); 181 READ_FROM_NVRAM(txpid2g[0], "txpid2ga0", buf); 182 READ_FROM_NVRAM(txpid2g[1], "txpid2ga1", buf); 183 READ_FROM_NVRAM(txpid2g[2], "txpid2ga2", buf); 184 READ_FROM_NVRAM(txpid2g[3], "txpid2ga3", buf); 185 READ_FROM_NVRAM(txpid5g[0], "txpid5ga0", buf); 186 READ_FROM_NVRAM(txpid5g[1], "txpid5ga1", buf); 187 READ_FROM_NVRAM(txpid5g[2], "txpid5ga2", buf); 188 READ_FROM_NVRAM(txpid5g[3], "txpid5ga3", buf); 189 READ_FROM_NVRAM(txpid5gl[0], "txpid5gla0", buf); 190 READ_FROM_NVRAM(txpid5gl[1], "txpid5gla1", buf); 191 READ_FROM_NVRAM(txpid5gl[2], "txpid5gla2", buf); 192 READ_FROM_NVRAM(txpid5gl[3], "txpid5gla3", buf); 193 READ_FROM_NVRAM(txpid5gh[0], "txpid5gha0", buf); 194 READ_FROM_NVRAM(txpid5gh[1], "txpid5gha1", buf); 195 READ_FROM_NVRAM(txpid5gh[2], "txpid5gha2", buf); 196 READ_FROM_NVRAM(txpid5gh[3], "txpid5gha3", buf); 197 READ_FROM_NVRAM(rxpo2g, "rxpo2g", buf); 198 READ_FROM_NVRAM(rxpo5g, "rxpo5g", buf); 199 READ_FROM_NVRAM(rssisav2g, "rssisav2g", buf); 200 READ_FROM_NVRAM(rssismc2g, "rssismc2g", buf); 201 READ_FROM_NVRAM(rssismf2g, "rssismf2g", buf); 202 READ_FROM_NVRAM(bxa2g, "bxa2g", buf); 203 READ_FROM_NVRAM(rssisav5g, "rssisav5g", buf); 204 READ_FROM_NVRAM(rssismc5g, "rssismc5g", buf); 205 READ_FROM_NVRAM(rssismf5g, "rssismf5g", buf); 206 READ_FROM_NVRAM(bxa5g, "bxa5g", buf); 207 READ_FROM_NVRAM(cck2gpo, "cck2gpo", buf); 208 209 sprom->ofdm2gpo = nvram_getu32("ofdm2gpo", buf, sizeof(buf)); 210 sprom->ofdm5glpo = nvram_getu32("ofdm5glpo", buf, sizeof(buf)); 211 sprom->ofdm5gpo = nvram_getu32("ofdm5gpo", buf, sizeof(buf)); 212 sprom->ofdm5ghpo = nvram_getu32("ofdm5ghpo", buf, sizeof(buf)); 213 214 READ_FROM_NVRAM(antenna_gain.ghz24.a0, "ag0", buf); 215 READ_FROM_NVRAM(antenna_gain.ghz24.a1, "ag1", buf); 216 READ_FROM_NVRAM(antenna_gain.ghz24.a2, "ag2", buf); 217 READ_FROM_NVRAM(antenna_gain.ghz24.a3, "ag3", buf); 218 memcpy(&sprom->antenna_gain.ghz5, &sprom->antenna_gain.ghz24, 219 sizeof(sprom->antenna_gain.ghz5)); 220 221 if (nvram_getprefix(prefix, "boardflags", buf, sizeof(buf)) >= 0) { 222 boardflags = simple_strtoul(buf, NULL, 0); 223 if (boardflags) { 224 sprom->boardflags_lo = (boardflags & 0x0000FFFFU); 225 sprom->boardflags_hi = (boardflags & 0xFFFF0000U) >> 16; 226 } 227 } 228 if (nvram_getprefix(prefix, "boardflags2", buf, sizeof(buf)) >= 0) { 229 boardflags = simple_strtoul(buf, NULL, 0); 230 if (boardflags) { 231 sprom->boardflags2_lo = (boardflags & 0x0000FFFFU); 232 sprom->boardflags2_hi = (boardflags & 0xFFFF0000U) >> 16; 233 } 234 } 235 } 236 237 int bcm47xx_get_sprom(struct ssb_bus *bus, struct ssb_sprom *out) 238 { 239 char prefix[10]; 240 241 if (bus->bustype == SSB_BUSTYPE_PCI) { 242 snprintf(prefix, sizeof(prefix), "pci/%u/%u/", 243 bus->host_pci->bus->number + 1, 244 PCI_SLOT(bus->host_pci->devfn)); 245 bcm47xx_fill_sprom(out, prefix); 246 return 0; 247 } else { 248 printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n"); 249 return -EINVAL; 250 } 251 } 252 253 static int bcm47xx_get_invariants(struct ssb_bus *bus, 254 struct ssb_init_invariants *iv) 255 { 256 char buf[20]; 257 258 /* Fill boardinfo structure */ 259 memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo)); 260 261 if (nvram_getenv("boardvendor", buf, sizeof(buf)) >= 0) 262 iv->boardinfo.vendor = (u16)simple_strtoul(buf, NULL, 0); 263 else 264 iv->boardinfo.vendor = SSB_BOARDVENDOR_BCM; 265 if (nvram_getenv("boardtype", buf, sizeof(buf)) >= 0) 266 iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0); 267 if (nvram_getenv("boardrev", buf, sizeof(buf)) >= 0) 268 iv->boardinfo.rev = (u16)simple_strtoul(buf, NULL, 0); 269 270 bcm47xx_fill_sprom(&iv->sprom, NULL); 271 272 if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0) 273 iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10); 274 275 return 0; 276 } 277 278 static void __init bcm47xx_register_ssb(void) 279 { 280 int err; 281 char buf[100]; 282 struct ssb_mipscore *mcore; 283 284 err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom); 285 if (err) 286 printk(KERN_WARNING "bcm47xx: someone else already registered" 287 " a ssb SPROM callback handler (err %d)\n", err); 288 289 err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE, 290 bcm47xx_get_invariants); 291 if (err) 292 panic("Failed to initialize SSB bus (err %d)", err); 293 294 mcore = &bcm47xx_bus.ssb.mipscore; 295 if (nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) { 296 if (strstr(buf, "console=ttyS1")) { 297 struct ssb_serial_port port; 298 299 printk(KERN_DEBUG "Swapping serial ports!\n"); 300 /* swap serial ports */ 301 memcpy(&port, &mcore->serial_ports[0], sizeof(port)); 302 memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1], 303 sizeof(port)); 304 memcpy(&mcore->serial_ports[1], &port, sizeof(port)); 305 } 306 } 307 } 308 #endif 309 310 #ifdef CONFIG_BCM47XX_BCMA 311 static void __init bcm47xx_register_bcma(void) 312 { 313 int err; 314 315 err = bcma_host_soc_register(&bcm47xx_bus.bcma); 316 if (err) 317 panic("Failed to initialize BCMA bus (err %d)", err); 318 } 319 #endif 320 321 void __init plat_mem_setup(void) 322 { 323 struct cpuinfo_mips *c = ¤t_cpu_data; 324 325 if (c->cputype == CPU_74K) { 326 printk(KERN_INFO "bcm47xx: using bcma bus\n"); 327 #ifdef CONFIG_BCM47XX_BCMA 328 bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA; 329 bcm47xx_register_bcma(); 330 #endif 331 } else { 332 printk(KERN_INFO "bcm47xx: using ssb bus\n"); 333 #ifdef CONFIG_BCM47XX_SSB 334 bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB; 335 bcm47xx_register_ssb(); 336 #endif 337 } 338 339 _machine_restart = bcm47xx_machine_restart; 340 _machine_halt = bcm47xx_machine_halt; 341 pm_power_off = bcm47xx_machine_halt; 342 } 343 344 static int __init bcm47xx_register_bus_complete(void) 345 { 346 switch (bcm47xx_bus_type) { 347 #ifdef CONFIG_BCM47XX_SSB 348 case BCM47XX_BUS_TYPE_SSB: 349 /* Nothing to do */ 350 break; 351 #endif 352 #ifdef CONFIG_BCM47XX_BCMA 353 case BCM47XX_BUS_TYPE_BCMA: 354 bcma_bus_register(&bcm47xx_bus.bcma.bus); 355 break; 356 #endif 357 } 358 return 0; 359 } 360 device_initcall(bcm47xx_register_bus_complete); 361