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 <linux/export.h> 30 #include <linux/types.h> 31 #include <linux/ethtool.h> 32 #include <linux/phy.h> 33 #include <linux/phy_fixed.h> 34 #include <linux/ssb/ssb.h> 35 #include <linux/ssb/ssb_embedded.h> 36 #include <linux/bcma/bcma_soc.h> 37 #include <asm/bootinfo.h> 38 #include <asm/reboot.h> 39 #include <asm/time.h> 40 #include <bcm47xx.h> 41 #include <bcm47xx_nvram.h> 42 #include <bcm47xx_board.h> 43 44 union bcm47xx_bus bcm47xx_bus; 45 EXPORT_SYMBOL(bcm47xx_bus); 46 47 enum bcm47xx_bus_type bcm47xx_bus_type; 48 EXPORT_SYMBOL(bcm47xx_bus_type); 49 50 static void bcm47xx_machine_restart(char *command) 51 { 52 printk(KERN_ALERT "Please stand by while rebooting the system...\n"); 53 local_irq_disable(); 54 /* Set the watchdog timer to reset immediately */ 55 switch (bcm47xx_bus_type) { 56 #ifdef CONFIG_BCM47XX_SSB 57 case BCM47XX_BUS_TYPE_SSB: 58 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1); 59 break; 60 #endif 61 #ifdef CONFIG_BCM47XX_BCMA 62 case BCM47XX_BUS_TYPE_BCMA: 63 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 1); 64 break; 65 #endif 66 } 67 while (1) 68 cpu_relax(); 69 } 70 71 static void bcm47xx_machine_halt(void) 72 { 73 /* Disable interrupts and watchdog and spin forever */ 74 local_irq_disable(); 75 switch (bcm47xx_bus_type) { 76 #ifdef CONFIG_BCM47XX_SSB 77 case BCM47XX_BUS_TYPE_SSB: 78 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0); 79 break; 80 #endif 81 #ifdef CONFIG_BCM47XX_BCMA 82 case BCM47XX_BUS_TYPE_BCMA: 83 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 0); 84 break; 85 #endif 86 } 87 while (1) 88 cpu_relax(); 89 } 90 91 #ifdef CONFIG_BCM47XX_SSB 92 static int bcm47xx_get_sprom_ssb(struct ssb_bus *bus, struct ssb_sprom *out) 93 { 94 char prefix[10]; 95 96 if (bus->bustype == SSB_BUSTYPE_PCI) { 97 memset(out, 0, sizeof(struct ssb_sprom)); 98 snprintf(prefix, sizeof(prefix), "pci/%u/%u/", 99 bus->host_pci->bus->number + 1, 100 PCI_SLOT(bus->host_pci->devfn)); 101 bcm47xx_fill_sprom(out, prefix, false); 102 return 0; 103 } else { 104 printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n"); 105 return -EINVAL; 106 } 107 } 108 109 static int bcm47xx_get_invariants(struct ssb_bus *bus, 110 struct ssb_init_invariants *iv) 111 { 112 char buf[20]; 113 114 /* Fill boardinfo structure */ 115 memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo)); 116 117 bcm47xx_fill_ssb_boardinfo(&iv->boardinfo, NULL); 118 119 memset(&iv->sprom, 0, sizeof(struct ssb_sprom)); 120 bcm47xx_fill_sprom(&iv->sprom, NULL, false); 121 122 if (bcm47xx_nvram_getenv("cardbus", buf, sizeof(buf)) >= 0) 123 iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10); 124 125 return 0; 126 } 127 128 static void __init bcm47xx_register_ssb(void) 129 { 130 int err; 131 char buf[100]; 132 struct ssb_mipscore *mcore; 133 134 err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom_ssb); 135 if (err) 136 printk(KERN_WARNING "bcm47xx: someone else already registered" 137 " a ssb SPROM callback handler (err %d)\n", err); 138 139 err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE, 140 bcm47xx_get_invariants); 141 if (err) 142 panic("Failed to initialize SSB bus (err %d)", err); 143 144 mcore = &bcm47xx_bus.ssb.mipscore; 145 if (bcm47xx_nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) { 146 if (strstr(buf, "console=ttyS1")) { 147 struct ssb_serial_port port; 148 149 printk(KERN_DEBUG "Swapping serial ports!\n"); 150 /* swap serial ports */ 151 memcpy(&port, &mcore->serial_ports[0], sizeof(port)); 152 memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1], 153 sizeof(port)); 154 memcpy(&mcore->serial_ports[1], &port, sizeof(port)); 155 } 156 } 157 } 158 #endif 159 160 #ifdef CONFIG_BCM47XX_BCMA 161 static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out) 162 { 163 char prefix[10]; 164 struct bcma_device *core; 165 166 switch (bus->hosttype) { 167 case BCMA_HOSTTYPE_PCI: 168 memset(out, 0, sizeof(struct ssb_sprom)); 169 snprintf(prefix, sizeof(prefix), "pci/%u/%u/", 170 bus->host_pci->bus->number + 1, 171 PCI_SLOT(bus->host_pci->devfn)); 172 bcm47xx_fill_sprom(out, prefix, false); 173 return 0; 174 case BCMA_HOSTTYPE_SOC: 175 memset(out, 0, sizeof(struct ssb_sprom)); 176 core = bcma_find_core(bus, BCMA_CORE_80211); 177 if (core) { 178 snprintf(prefix, sizeof(prefix), "sb/%u/", 179 core->core_index); 180 bcm47xx_fill_sprom(out, prefix, true); 181 } else { 182 bcm47xx_fill_sprom(out, NULL, false); 183 } 184 return 0; 185 default: 186 pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n"); 187 return -EINVAL; 188 } 189 } 190 191 static void __init bcm47xx_register_bcma(void) 192 { 193 int err; 194 195 err = bcma_arch_register_fallback_sprom(&bcm47xx_get_sprom_bcma); 196 if (err) 197 pr_warn("bcm47xx: someone else already registered a bcma SPROM callback handler (err %d)\n", err); 198 199 err = bcma_host_soc_register(&bcm47xx_bus.bcma); 200 if (err) 201 panic("Failed to initialize BCMA bus (err %d)", err); 202 203 bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL); 204 } 205 #endif 206 207 void __init plat_mem_setup(void) 208 { 209 struct cpuinfo_mips *c = ¤t_cpu_data; 210 211 if (c->cputype == CPU_74K) { 212 printk(KERN_INFO "bcm47xx: using bcma bus\n"); 213 #ifdef CONFIG_BCM47XX_BCMA 214 bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA; 215 bcm47xx_register_bcma(); 216 #endif 217 } else { 218 printk(KERN_INFO "bcm47xx: using ssb bus\n"); 219 #ifdef CONFIG_BCM47XX_SSB 220 bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB; 221 bcm47xx_register_ssb(); 222 #endif 223 } 224 225 _machine_restart = bcm47xx_machine_restart; 226 _machine_halt = bcm47xx_machine_halt; 227 pm_power_off = bcm47xx_machine_halt; 228 bcm47xx_board_detect(); 229 } 230 231 static struct fixed_phy_status bcm47xx_fixed_phy_status __initdata = { 232 .link = 1, 233 .speed = SPEED_100, 234 .duplex = DUPLEX_FULL, 235 }; 236 237 static int __init bcm47xx_register_bus_complete(void) 238 { 239 switch (bcm47xx_bus_type) { 240 #ifdef CONFIG_BCM47XX_SSB 241 case BCM47XX_BUS_TYPE_SSB: 242 /* Nothing to do */ 243 break; 244 #endif 245 #ifdef CONFIG_BCM47XX_BCMA 246 case BCM47XX_BUS_TYPE_BCMA: 247 bcma_bus_register(&bcm47xx_bus.bcma.bus); 248 break; 249 #endif 250 } 251 fixed_phy_add(PHY_POLL, 0, &bcm47xx_fixed_phy_status); 252 return 0; 253 } 254 device_initcall(bcm47xx_register_bus_complete); 255