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) 2010-2012 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 "bcm47xx_private.h" 30 31 #include <linux/export.h> 32 #include <linux/types.h> 33 #include <linux/ethtool.h> 34 #include <linux/phy.h> 35 #include <linux/phy_fixed.h> 36 #include <linux/ssb/ssb.h> 37 #include <linux/ssb/ssb_embedded.h> 38 #include <linux/bcma/bcma_soc.h> 39 #include <asm/bootinfo.h> 40 #include <asm/idle.h> 41 #include <asm/prom.h> 42 #include <asm/reboot.h> 43 #include <asm/time.h> 44 #include <bcm47xx.h> 45 #include <bcm47xx_nvram.h> 46 #include <bcm47xx_board.h> 47 48 union bcm47xx_bus bcm47xx_bus; 49 EXPORT_SYMBOL(bcm47xx_bus); 50 51 enum bcm47xx_bus_type bcm47xx_bus_type; 52 EXPORT_SYMBOL(bcm47xx_bus_type); 53 54 static void bcm47xx_machine_restart(char *command) 55 { 56 printk(KERN_ALERT "Please stand by while rebooting the system...\n"); 57 local_irq_disable(); 58 /* Set the watchdog timer to reset immediately */ 59 switch (bcm47xx_bus_type) { 60 #ifdef CONFIG_BCM47XX_SSB 61 case BCM47XX_BUS_TYPE_SSB: 62 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1); 63 break; 64 #endif 65 #ifdef CONFIG_BCM47XX_BCMA 66 case BCM47XX_BUS_TYPE_BCMA: 67 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 1); 68 break; 69 #endif 70 } 71 while (1) 72 cpu_relax(); 73 } 74 75 static void bcm47xx_machine_halt(void) 76 { 77 /* Disable interrupts and watchdog and spin forever */ 78 local_irq_disable(); 79 switch (bcm47xx_bus_type) { 80 #ifdef CONFIG_BCM47XX_SSB 81 case BCM47XX_BUS_TYPE_SSB: 82 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0); 83 break; 84 #endif 85 #ifdef CONFIG_BCM47XX_BCMA 86 case BCM47XX_BUS_TYPE_BCMA: 87 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 0); 88 break; 89 #endif 90 } 91 while (1) 92 cpu_relax(); 93 } 94 95 #ifdef CONFIG_BCM47XX_SSB 96 static int bcm47xx_get_sprom_ssb(struct ssb_bus *bus, struct ssb_sprom *out) 97 { 98 char prefix[10]; 99 100 if (bus->bustype == SSB_BUSTYPE_PCI) { 101 memset(out, 0, sizeof(struct ssb_sprom)); 102 snprintf(prefix, sizeof(prefix), "pci/%u/%u/", 103 bus->host_pci->bus->number + 1, 104 PCI_SLOT(bus->host_pci->devfn)); 105 bcm47xx_fill_sprom(out, prefix, false); 106 return 0; 107 } else { 108 printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n"); 109 return -EINVAL; 110 } 111 } 112 113 static int bcm47xx_get_invariants(struct ssb_bus *bus, 114 struct ssb_init_invariants *iv) 115 { 116 char buf[20]; 117 118 /* Fill boardinfo structure */ 119 memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo)); 120 121 bcm47xx_fill_ssb_boardinfo(&iv->boardinfo, NULL); 122 123 memset(&iv->sprom, 0, sizeof(struct ssb_sprom)); 124 bcm47xx_fill_sprom(&iv->sprom, NULL, false); 125 126 if (bcm47xx_nvram_getenv("cardbus", buf, sizeof(buf)) >= 0) 127 iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10); 128 129 return 0; 130 } 131 132 static void __init bcm47xx_register_ssb(void) 133 { 134 int err; 135 char buf[100]; 136 struct ssb_mipscore *mcore; 137 138 err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom_ssb); 139 if (err) 140 printk(KERN_WARNING "bcm47xx: someone else already registered" 141 " a ssb SPROM callback handler (err %d)\n", err); 142 143 err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE, 144 bcm47xx_get_invariants); 145 if (err) 146 panic("Failed to initialize SSB bus (err %d)", err); 147 148 mcore = &bcm47xx_bus.ssb.mipscore; 149 if (bcm47xx_nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) { 150 if (strstr(buf, "console=ttyS1")) { 151 struct ssb_serial_port port; 152 153 printk(KERN_DEBUG "Swapping serial ports!\n"); 154 /* swap serial ports */ 155 memcpy(&port, &mcore->serial_ports[0], sizeof(port)); 156 memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1], 157 sizeof(port)); 158 memcpy(&mcore->serial_ports[1], &port, sizeof(port)); 159 } 160 } 161 } 162 #endif 163 164 #ifdef CONFIG_BCM47XX_BCMA 165 static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out) 166 { 167 char prefix[10]; 168 struct bcma_device *core; 169 170 switch (bus->hosttype) { 171 case BCMA_HOSTTYPE_PCI: 172 memset(out, 0, sizeof(struct ssb_sprom)); 173 snprintf(prefix, sizeof(prefix), "pci/%u/%u/", 174 bus->host_pci->bus->number + 1, 175 PCI_SLOT(bus->host_pci->devfn)); 176 bcm47xx_fill_sprom(out, prefix, false); 177 return 0; 178 case BCMA_HOSTTYPE_SOC: 179 memset(out, 0, sizeof(struct ssb_sprom)); 180 core = bcma_find_core(bus, BCMA_CORE_80211); 181 if (core) { 182 snprintf(prefix, sizeof(prefix), "sb/%u/", 183 core->core_index); 184 bcm47xx_fill_sprom(out, prefix, true); 185 } else { 186 bcm47xx_fill_sprom(out, NULL, false); 187 } 188 return 0; 189 default: 190 pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n"); 191 return -EINVAL; 192 } 193 } 194 195 static void __init bcm47xx_register_bcma(void) 196 { 197 int err; 198 199 err = bcma_arch_register_fallback_sprom(&bcm47xx_get_sprom_bcma); 200 if (err) 201 pr_warn("bcm47xx: someone else already registered a bcma SPROM callback handler (err %d)\n", err); 202 203 err = bcma_host_soc_register(&bcm47xx_bus.bcma); 204 if (err) 205 panic("Failed to initialize BCMA bus (err %d)", err); 206 207 bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL); 208 } 209 #endif 210 211 void __init plat_mem_setup(void) 212 { 213 struct cpuinfo_mips *c = ¤t_cpu_data; 214 215 if ((c->cputype == CPU_74K) || (c->cputype == CPU_1074K)) { 216 printk(KERN_INFO "bcm47xx: using bcma bus\n"); 217 #ifdef CONFIG_BCM47XX_BCMA 218 bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA; 219 bcm47xx_register_bcma(); 220 bcm47xx_set_system_type(bcm47xx_bus.bcma.bus.chipinfo.id); 221 #endif 222 } else { 223 printk(KERN_INFO "bcm47xx: using ssb bus\n"); 224 #ifdef CONFIG_BCM47XX_SSB 225 bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB; 226 bcm47xx_register_ssb(); 227 bcm47xx_set_system_type(bcm47xx_bus.ssb.chip_id); 228 #endif 229 } 230 231 _machine_restart = bcm47xx_machine_restart; 232 _machine_halt = bcm47xx_machine_halt; 233 pm_power_off = bcm47xx_machine_halt; 234 bcm47xx_board_detect(); 235 mips_set_machine_name(bcm47xx_board_get_name()); 236 } 237 238 static int __init bcm47xx_cpu_fixes(void) 239 { 240 switch (bcm47xx_bus_type) { 241 #ifdef CONFIG_BCM47XX_SSB 242 case BCM47XX_BUS_TYPE_SSB: 243 /* Nothing to do */ 244 break; 245 #endif 246 #ifdef CONFIG_BCM47XX_BCMA 247 case BCM47XX_BUS_TYPE_BCMA: 248 /* The BCM4706 has a problem with the CPU wait instruction. 249 * When r4k_wait or r4k_wait_irqoff is used will just hang and 250 * not return from a msleep(). Removing the cpu_wait 251 * functionality is a workaround for this problem. The BCM4716 252 * does not have this problem. 253 */ 254 if (bcm47xx_bus.bcma.bus.chipinfo.id == BCMA_CHIP_ID_BCM4706) 255 cpu_wait = NULL; 256 break; 257 #endif 258 } 259 return 0; 260 } 261 arch_initcall(bcm47xx_cpu_fixes); 262 263 static struct fixed_phy_status bcm47xx_fixed_phy_status __initdata = { 264 .link = 1, 265 .speed = SPEED_100, 266 .duplex = DUPLEX_FULL, 267 }; 268 269 static int __init bcm47xx_register_bus_complete(void) 270 { 271 switch (bcm47xx_bus_type) { 272 #ifdef CONFIG_BCM47XX_SSB 273 case BCM47XX_BUS_TYPE_SSB: 274 /* Nothing to do */ 275 break; 276 #endif 277 #ifdef CONFIG_BCM47XX_BCMA 278 case BCM47XX_BUS_TYPE_BCMA: 279 bcma_bus_register(&bcm47xx_bus.bcma.bus); 280 break; 281 #endif 282 } 283 bcm47xx_buttons_register(); 284 bcm47xx_leds_register(); 285 bcm47xx_workarounds(); 286 287 fixed_phy_add(PHY_POLL, 0, &bcm47xx_fixed_phy_status); 288 return 0; 289 } 290 device_initcall(bcm47xx_register_bus_complete); 291