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 <mb@bu3sch.de> 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/types.h> 30 #include <linux/ssb/ssb.h> 31 #include <linux/ssb/ssb_embedded.h> 32 #include <asm/bootinfo.h> 33 #include <asm/reboot.h> 34 #include <asm/time.h> 35 #include <bcm47xx.h> 36 #include <asm/mach-bcm47xx/nvram.h> 37 38 struct ssb_bus ssb_bcm47xx; 39 EXPORT_SYMBOL(ssb_bcm47xx); 40 41 static void bcm47xx_machine_restart(char *command) 42 { 43 printk(KERN_ALERT "Please stand by while rebooting the system...\n"); 44 local_irq_disable(); 45 /* Set the watchdog timer to reset immediately */ 46 ssb_watchdog_timer_set(&ssb_bcm47xx, 1); 47 while (1) 48 cpu_relax(); 49 } 50 51 static void bcm47xx_machine_halt(void) 52 { 53 /* Disable interrupts and watchdog and spin forever */ 54 local_irq_disable(); 55 ssb_watchdog_timer_set(&ssb_bcm47xx, 0); 56 while (1) 57 cpu_relax(); 58 } 59 60 #define READ_FROM_NVRAM(_outvar, name, buf) \ 61 if (nvram_getprefix(prefix, name, buf, sizeof(buf)) >= 0)\ 62 sprom->_outvar = simple_strtoul(buf, NULL, 0); 63 64 #define READ_FROM_NVRAM2(_outvar, name1, name2, buf) \ 65 if (nvram_getprefix(prefix, name1, buf, sizeof(buf)) >= 0 || \ 66 nvram_getprefix(prefix, name2, buf, sizeof(buf)) >= 0)\ 67 sprom->_outvar = simple_strtoul(buf, NULL, 0); 68 69 static inline int nvram_getprefix(const char *prefix, char *name, 70 char *buf, int len) 71 { 72 if (prefix) { 73 char key[100]; 74 75 snprintf(key, sizeof(key), "%s%s", prefix, name); 76 return nvram_getenv(key, buf, len); 77 } 78 79 return nvram_getenv(name, buf, len); 80 } 81 82 static u32 nvram_getu32(const char *name, char *buf, int len) 83 { 84 int rv; 85 char key[100]; 86 u16 var0, var1; 87 88 snprintf(key, sizeof(key), "%s0", name); 89 rv = nvram_getenv(key, buf, len); 90 /* return 0 here so this looks like unset */ 91 if (rv < 0) 92 return 0; 93 var0 = simple_strtoul(buf, NULL, 0); 94 95 snprintf(key, sizeof(key), "%s1", name); 96 rv = nvram_getenv(key, buf, len); 97 if (rv < 0) 98 return 0; 99 var1 = simple_strtoul(buf, NULL, 0); 100 return var1 << 16 | var0; 101 } 102 103 static void bcm47xx_fill_sprom(struct ssb_sprom *sprom, const char *prefix) 104 { 105 char buf[100]; 106 u32 boardflags; 107 108 memset(sprom, 0, sizeof(struct ssb_sprom)); 109 110 sprom->revision = 1; /* Fallback: Old hardware does not define this. */ 111 READ_FROM_NVRAM(revision, "sromrev", buf); 112 if (nvram_getprefix(prefix, "il0macaddr", buf, sizeof(buf)) >= 0 || 113 nvram_getprefix(prefix, "macaddr", buf, sizeof(buf)) >= 0) 114 nvram_parse_macaddr(buf, sprom->il0mac); 115 if (nvram_getprefix(prefix, "et0macaddr", buf, sizeof(buf)) >= 0) 116 nvram_parse_macaddr(buf, sprom->et0mac); 117 if (nvram_getprefix(prefix, "et1macaddr", buf, sizeof(buf)) >= 0) 118 nvram_parse_macaddr(buf, sprom->et1mac); 119 READ_FROM_NVRAM(et0phyaddr, "et0phyaddr", buf); 120 READ_FROM_NVRAM(et1phyaddr, "et1phyaddr", buf); 121 READ_FROM_NVRAM(et0mdcport, "et0mdcport", buf); 122 READ_FROM_NVRAM(et1mdcport, "et1mdcport", buf); 123 READ_FROM_NVRAM(board_rev, "boardrev", buf); 124 READ_FROM_NVRAM(country_code, "ccode", buf); 125 READ_FROM_NVRAM(ant_available_a, "aa5g", buf); 126 READ_FROM_NVRAM(ant_available_bg, "aa2g", buf); 127 READ_FROM_NVRAM(pa0b0, "pa0b0", buf); 128 READ_FROM_NVRAM(pa0b1, "pa0b1", buf); 129 READ_FROM_NVRAM(pa0b2, "pa0b2", buf); 130 READ_FROM_NVRAM(pa1b0, "pa1b0", buf); 131 READ_FROM_NVRAM(pa1b1, "pa1b1", buf); 132 READ_FROM_NVRAM(pa1b2, "pa1b2", buf); 133 READ_FROM_NVRAM(pa1lob0, "pa1lob0", buf); 134 READ_FROM_NVRAM(pa1lob2, "pa1lob1", buf); 135 READ_FROM_NVRAM(pa1lob1, "pa1lob2", buf); 136 READ_FROM_NVRAM(pa1hib0, "pa1hib0", buf); 137 READ_FROM_NVRAM(pa1hib2, "pa1hib1", buf); 138 READ_FROM_NVRAM(pa1hib1, "pa1hib2", buf); 139 READ_FROM_NVRAM2(gpio0, "ledbh0", "wl0gpio0", buf); 140 READ_FROM_NVRAM2(gpio1, "ledbh1", "wl0gpio1", buf); 141 READ_FROM_NVRAM2(gpio2, "ledbh2", "wl0gpio2", buf); 142 READ_FROM_NVRAM2(gpio3, "ledbh3", "wl0gpio3", buf); 143 READ_FROM_NVRAM2(maxpwr_bg, "maxp2ga0", "pa0maxpwr", buf); 144 READ_FROM_NVRAM2(maxpwr_al, "maxp5gla0", "pa1lomaxpwr", buf); 145 READ_FROM_NVRAM2(maxpwr_a, "maxp5ga0", "pa1maxpwr", buf); 146 READ_FROM_NVRAM2(maxpwr_ah, "maxp5gha0", "pa1himaxpwr", buf); 147 READ_FROM_NVRAM2(itssi_bg, "itt5ga0", "pa0itssit", buf); 148 READ_FROM_NVRAM2(itssi_a, "itt2ga0", "pa1itssit", buf); 149 READ_FROM_NVRAM(tri2g, "tri2g", buf); 150 READ_FROM_NVRAM(tri5gl, "tri5gl", buf); 151 READ_FROM_NVRAM(tri5g, "tri5g", buf); 152 READ_FROM_NVRAM(tri5gh, "tri5gh", buf); 153 READ_FROM_NVRAM(txpid2g[0], "txpid2ga0", buf); 154 READ_FROM_NVRAM(txpid2g[1], "txpid2ga1", buf); 155 READ_FROM_NVRAM(txpid2g[2], "txpid2ga2", buf); 156 READ_FROM_NVRAM(txpid2g[3], "txpid2ga3", buf); 157 READ_FROM_NVRAM(txpid5g[0], "txpid5ga0", buf); 158 READ_FROM_NVRAM(txpid5g[1], "txpid5ga1", buf); 159 READ_FROM_NVRAM(txpid5g[2], "txpid5ga2", buf); 160 READ_FROM_NVRAM(txpid5g[3], "txpid5ga3", buf); 161 READ_FROM_NVRAM(txpid5gl[0], "txpid5gla0", buf); 162 READ_FROM_NVRAM(txpid5gl[1], "txpid5gla1", buf); 163 READ_FROM_NVRAM(txpid5gl[2], "txpid5gla2", buf); 164 READ_FROM_NVRAM(txpid5gl[3], "txpid5gla3", buf); 165 READ_FROM_NVRAM(txpid5gh[0], "txpid5gha0", buf); 166 READ_FROM_NVRAM(txpid5gh[1], "txpid5gha1", buf); 167 READ_FROM_NVRAM(txpid5gh[2], "txpid5gha2", buf); 168 READ_FROM_NVRAM(txpid5gh[3], "txpid5gha3", buf); 169 READ_FROM_NVRAM(rxpo2g, "rxpo2g", buf); 170 READ_FROM_NVRAM(rxpo5g, "rxpo5g", buf); 171 READ_FROM_NVRAM(rssisav2g, "rssisav2g", buf); 172 READ_FROM_NVRAM(rssismc2g, "rssismc2g", buf); 173 READ_FROM_NVRAM(rssismf2g, "rssismf2g", buf); 174 READ_FROM_NVRAM(bxa2g, "bxa2g", buf); 175 READ_FROM_NVRAM(rssisav5g, "rssisav5g", buf); 176 READ_FROM_NVRAM(rssismc5g, "rssismc5g", buf); 177 READ_FROM_NVRAM(rssismf5g, "rssismf5g", buf); 178 READ_FROM_NVRAM(bxa5g, "bxa5g", buf); 179 READ_FROM_NVRAM(cck2gpo, "cck2gpo", buf); 180 181 sprom->ofdm2gpo = nvram_getu32("ofdm2gpo", buf, sizeof(buf)); 182 sprom->ofdm5glpo = nvram_getu32("ofdm5glpo", buf, sizeof(buf)); 183 sprom->ofdm5gpo = nvram_getu32("ofdm5gpo", buf, sizeof(buf)); 184 sprom->ofdm5ghpo = nvram_getu32("ofdm5ghpo", buf, sizeof(buf)); 185 186 READ_FROM_NVRAM(antenna_gain.ghz24.a0, "ag0", buf); 187 READ_FROM_NVRAM(antenna_gain.ghz24.a1, "ag1", buf); 188 READ_FROM_NVRAM(antenna_gain.ghz24.a2, "ag2", buf); 189 READ_FROM_NVRAM(antenna_gain.ghz24.a3, "ag3", buf); 190 memcpy(&sprom->antenna_gain.ghz5, &sprom->antenna_gain.ghz24, 191 sizeof(sprom->antenna_gain.ghz5)); 192 193 if (nvram_getprefix(prefix, "boardflags", buf, sizeof(buf)) >= 0) { 194 boardflags = simple_strtoul(buf, NULL, 0); 195 if (boardflags) { 196 sprom->boardflags_lo = (boardflags & 0x0000FFFFU); 197 sprom->boardflags_hi = (boardflags & 0xFFFF0000U) >> 16; 198 } 199 } 200 if (nvram_getprefix(prefix, "boardflags2", buf, sizeof(buf)) >= 0) { 201 boardflags = simple_strtoul(buf, NULL, 0); 202 if (boardflags) { 203 sprom->boardflags2_lo = (boardflags & 0x0000FFFFU); 204 sprom->boardflags2_hi = (boardflags & 0xFFFF0000U) >> 16; 205 } 206 } 207 } 208 209 int bcm47xx_get_sprom(struct ssb_bus *bus, struct ssb_sprom *out) 210 { 211 char prefix[10]; 212 213 if (bus->bustype == SSB_BUSTYPE_PCI) { 214 snprintf(prefix, sizeof(prefix), "pci/%u/%u/", 215 bus->host_pci->bus->number + 1, 216 PCI_SLOT(bus->host_pci->devfn)); 217 bcm47xx_fill_sprom(out, prefix); 218 return 0; 219 } else { 220 printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n"); 221 return -EINVAL; 222 } 223 } 224 225 static int bcm47xx_get_invariants(struct ssb_bus *bus, 226 struct ssb_init_invariants *iv) 227 { 228 char buf[20]; 229 230 /* Fill boardinfo structure */ 231 memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo)); 232 233 if (nvram_getenv("boardvendor", buf, sizeof(buf)) >= 0) 234 iv->boardinfo.vendor = (u16)simple_strtoul(buf, NULL, 0); 235 else 236 iv->boardinfo.vendor = SSB_BOARDVENDOR_BCM; 237 if (nvram_getenv("boardtype", buf, sizeof(buf)) >= 0) 238 iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0); 239 if (nvram_getenv("boardrev", buf, sizeof(buf)) >= 0) 240 iv->boardinfo.rev = (u16)simple_strtoul(buf, NULL, 0); 241 242 bcm47xx_fill_sprom(&iv->sprom, NULL); 243 244 if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0) 245 iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10); 246 247 return 0; 248 } 249 250 void __init plat_mem_setup(void) 251 { 252 int err; 253 char buf[100]; 254 struct ssb_mipscore *mcore; 255 256 err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom); 257 if (err) 258 printk(KERN_WARNING "bcm47xx: someone else already registered" 259 " a ssb SPROM callback handler (err %d)\n", err); 260 261 err = ssb_bus_ssbbus_register(&ssb_bcm47xx, SSB_ENUM_BASE, 262 bcm47xx_get_invariants); 263 if (err) 264 panic("Failed to initialize SSB bus (err %d)\n", err); 265 266 mcore = &ssb_bcm47xx.mipscore; 267 if (nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) { 268 if (strstr(buf, "console=ttyS1")) { 269 struct ssb_serial_port port; 270 271 printk(KERN_DEBUG "Swapping serial ports!\n"); 272 /* swap serial ports */ 273 memcpy(&port, &mcore->serial_ports[0], sizeof(port)); 274 memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1], 275 sizeof(port)); 276 memcpy(&mcore->serial_ports[1], &port, sizeof(port)); 277 } 278 } 279 280 _machine_restart = bcm47xx_machine_restart; 281 _machine_halt = bcm47xx_machine_halt; 282 pm_power_off = bcm47xx_machine_halt; 283 } 284