1 /* 2 * Toshiba rbtx4927 specific setup 3 * 4 * Author: MontaVista Software, Inc. 5 * source@mvista.com 6 * 7 * Copyright 2001-2002 MontaVista Software Inc. 8 * 9 * Copyright (C) 1996, 97, 2001, 04 Ralf Baechle (ralf@linux-mips.org) 10 * Copyright (C) 2000 RidgeRun, Inc. 11 * Author: RidgeRun, Inc. 12 * glonnon@ridgerun.com, skranz@ridgerun.com, stevej@ridgerun.com 13 * 14 * Copyright 2001 MontaVista Software Inc. 15 * Author: jsun@mvista.com or jsun@junsun.net 16 * 17 * Copyright 2002 MontaVista Software Inc. 18 * Author: Michael Pruznick, michael_pruznick@mvista.com 19 * 20 * Copyright (C) 2000-2001 Toshiba Corporation 21 * 22 * Copyright (C) 2004 MontaVista Software Inc. 23 * Author: Manish Lachwani, mlachwani@mvista.com 24 * 25 * This program is free software; you can redistribute it and/or modify it 26 * under the terms of the GNU General Public License as published by the 27 * Free Software Foundation; either version 2 of the License, or (at your 28 * option) any later version. 29 * 30 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 31 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 32 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 33 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 34 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 35 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 36 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 37 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 38 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 39 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 40 * 41 * You should have received a copy of the GNU General Public License along 42 * with this program; if not, write to the Free Software Foundation, Inc., 43 * 675 Mass Ave, Cambridge, MA 02139, USA. 44 */ 45 #include <linux/init.h> 46 #include <linux/kernel.h> 47 #include <linux/types.h> 48 #include <linux/ioport.h> 49 #include <linux/platform_device.h> 50 #include <linux/delay.h> 51 #include <linux/gpio.h> 52 #include <linux/leds.h> 53 #include <asm/io.h> 54 #include <asm/reboot.h> 55 #include <asm/txx9pio.h> 56 #include <asm/txx9/generic.h> 57 #include <asm/txx9/pci.h> 58 #include <asm/txx9/rbtx4927.h> 59 #include <asm/txx9/tx4938.h> /* for TX4937 */ 60 61 #ifdef CONFIG_PCI 62 static void __init tx4927_pci_setup(void) 63 { 64 int extarb = !(__raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_PCIARB); 65 struct pci_controller *c = &txx9_primary_pcic; 66 67 register_pci_controller(c); 68 69 if (__raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_PCI66) 70 txx9_pci_option = 71 (txx9_pci_option & ~TXX9_PCI_OPT_CLK_MASK) | 72 TXX9_PCI_OPT_CLK_66; /* already configured */ 73 74 /* Reset PCI Bus */ 75 writeb(1, rbtx4927_pcireset_addr); 76 /* Reset PCIC */ 77 txx9_set64(&tx4927_ccfgptr->clkctr, TX4927_CLKCTR_PCIRST); 78 if ((txx9_pci_option & TXX9_PCI_OPT_CLK_MASK) == 79 TXX9_PCI_OPT_CLK_66) 80 tx4927_pciclk66_setup(); 81 mdelay(10); 82 /* clear PCIC reset */ 83 txx9_clear64(&tx4927_ccfgptr->clkctr, TX4927_CLKCTR_PCIRST); 84 writeb(0, rbtx4927_pcireset_addr); 85 iob(); 86 87 tx4927_report_pciclk(); 88 tx4927_pcic_setup(tx4927_pcicptr, c, extarb); 89 if ((txx9_pci_option & TXX9_PCI_OPT_CLK_MASK) == 90 TXX9_PCI_OPT_CLK_AUTO && 91 txx9_pci66_check(c, 0, 0)) { 92 /* Reset PCI Bus */ 93 writeb(1, rbtx4927_pcireset_addr); 94 /* Reset PCIC */ 95 txx9_set64(&tx4927_ccfgptr->clkctr, TX4927_CLKCTR_PCIRST); 96 tx4927_pciclk66_setup(); 97 mdelay(10); 98 /* clear PCIC reset */ 99 txx9_clear64(&tx4927_ccfgptr->clkctr, TX4927_CLKCTR_PCIRST); 100 writeb(0, rbtx4927_pcireset_addr); 101 iob(); 102 /* Reinitialize PCIC */ 103 tx4927_report_pciclk(); 104 tx4927_pcic_setup(tx4927_pcicptr, c, extarb); 105 } 106 tx4927_setup_pcierr_irq(); 107 } 108 109 static void __init tx4937_pci_setup(void) 110 { 111 int extarb = !(__raw_readq(&tx4938_ccfgptr->ccfg) & TX4938_CCFG_PCIARB); 112 struct pci_controller *c = &txx9_primary_pcic; 113 114 register_pci_controller(c); 115 116 if (__raw_readq(&tx4938_ccfgptr->ccfg) & TX4938_CCFG_PCI66) 117 txx9_pci_option = 118 (txx9_pci_option & ~TXX9_PCI_OPT_CLK_MASK) | 119 TXX9_PCI_OPT_CLK_66; /* already configured */ 120 121 /* Reset PCI Bus */ 122 writeb(1, rbtx4927_pcireset_addr); 123 /* Reset PCIC */ 124 txx9_set64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST); 125 if ((txx9_pci_option & TXX9_PCI_OPT_CLK_MASK) == 126 TXX9_PCI_OPT_CLK_66) 127 tx4938_pciclk66_setup(); 128 mdelay(10); 129 /* clear PCIC reset */ 130 txx9_clear64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST); 131 writeb(0, rbtx4927_pcireset_addr); 132 iob(); 133 134 tx4938_report_pciclk(); 135 tx4927_pcic_setup(tx4938_pcicptr, c, extarb); 136 if ((txx9_pci_option & TXX9_PCI_OPT_CLK_MASK) == 137 TXX9_PCI_OPT_CLK_AUTO && 138 txx9_pci66_check(c, 0, 0)) { 139 /* Reset PCI Bus */ 140 writeb(1, rbtx4927_pcireset_addr); 141 /* Reset PCIC */ 142 txx9_set64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST); 143 tx4938_pciclk66_setup(); 144 mdelay(10); 145 /* clear PCIC reset */ 146 txx9_clear64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST); 147 writeb(0, rbtx4927_pcireset_addr); 148 iob(); 149 /* Reinitialize PCIC */ 150 tx4938_report_pciclk(); 151 tx4927_pcic_setup(tx4938_pcicptr, c, extarb); 152 } 153 tx4938_setup_pcierr_irq(); 154 } 155 #else 156 static inline void tx4927_pci_setup(void) {} 157 static inline void tx4937_pci_setup(void) {} 158 #endif /* CONFIG_PCI */ 159 160 static void __init rbtx4927_gpio_init(void) 161 { 162 /* TX4927-SIO DTR on (PIO[15]) */ 163 gpio_request(15, "sio-dtr"); 164 gpio_direction_output(15, 1); 165 166 tx4927_sio_init(0, 0); 167 } 168 169 static void __init rbtx4927_arch_init(void) 170 { 171 txx9_gpio_init(TX4927_PIO_REG & 0xfffffffffULL, 0, TX4927_NUM_PIO); 172 173 rbtx4927_gpio_init(); 174 175 tx4927_pci_setup(); 176 } 177 178 static void __init rbtx4937_arch_init(void) 179 { 180 txx9_gpio_init(TX4938_PIO_REG & 0xfffffffffULL, 0, TX4938_NUM_PIO); 181 182 rbtx4927_gpio_init(); 183 184 tx4937_pci_setup(); 185 } 186 187 static void toshiba_rbtx4927_restart(char *command) 188 { 189 /* enable the s/w reset register */ 190 writeb(1, rbtx4927_softresetlock_addr); 191 192 /* wait for enable to be seen */ 193 while (!(readb(rbtx4927_softresetlock_addr) & 1)) 194 ; 195 196 /* do a s/w reset */ 197 writeb(1, rbtx4927_softreset_addr); 198 199 /* fallback */ 200 (*_machine_halt)(); 201 } 202 203 static void __init rbtx4927_clock_init(void); 204 static void __init rbtx4937_clock_init(void); 205 206 static void __init rbtx4927_mem_setup(void) 207 { 208 if (TX4927_REV_PCODE() == 0x4927) { 209 rbtx4927_clock_init(); 210 tx4927_setup(); 211 } else { 212 rbtx4937_clock_init(); 213 tx4938_setup(); 214 } 215 216 _machine_restart = toshiba_rbtx4927_restart; 217 218 #ifdef CONFIG_PCI 219 txx9_alloc_pci_controller(&txx9_primary_pcic, 220 RBTX4927_PCIMEM, RBTX4927_PCIMEM_SIZE, 221 RBTX4927_PCIIO, RBTX4927_PCIIO_SIZE); 222 txx9_board_pcibios_setup = tx4927_pcibios_setup; 223 #else 224 set_io_port_base(KSEG1 + RBTX4927_ISA_IO_OFFSET); 225 #endif 226 } 227 228 static void __init rbtx4927_clock_init(void) 229 { 230 /* 231 * ASSUMPTION: PCIDIVMODE is configured for PCI 33MHz or 66MHz. 232 * 233 * For TX4927: 234 * PCIDIVMODE[12:11]'s initial value is given by S9[4:3] (ON:0, OFF:1). 235 * CPU 166MHz: PCI 66MHz : PCIDIVMODE: 00 (1/2.5) 236 * CPU 200MHz: PCI 66MHz : PCIDIVMODE: 01 (1/3) 237 * CPU 166MHz: PCI 33MHz : PCIDIVMODE: 10 (1/5) 238 * CPU 200MHz: PCI 33MHz : PCIDIVMODE: 11 (1/6) 239 * i.e. S9[3]: ON (83MHz), OFF (100MHz) 240 */ 241 switch ((unsigned long)__raw_readq(&tx4927_ccfgptr->ccfg) & 242 TX4927_CCFG_PCIDIVMODE_MASK) { 243 case TX4927_CCFG_PCIDIVMODE_2_5: 244 case TX4927_CCFG_PCIDIVMODE_5: 245 txx9_cpu_clock = 166666666; /* 166MHz */ 246 break; 247 default: 248 txx9_cpu_clock = 200000000; /* 200MHz */ 249 } 250 } 251 252 static void __init rbtx4937_clock_init(void) 253 { 254 /* 255 * ASSUMPTION: PCIDIVMODE is configured for PCI 33MHz or 66MHz. 256 * 257 * For TX4937: 258 * PCIDIVMODE[12:11]'s initial value is given by S1[5:4] (ON:0, OFF:1) 259 * PCIDIVMODE[10] is 0. 260 * CPU 266MHz: PCI 33MHz : PCIDIVMODE: 000 (1/8) 261 * CPU 266MHz: PCI 66MHz : PCIDIVMODE: 001 (1/4) 262 * CPU 300MHz: PCI 33MHz : PCIDIVMODE: 010 (1/9) 263 * CPU 300MHz: PCI 66MHz : PCIDIVMODE: 011 (1/4.5) 264 * CPU 333MHz: PCI 33MHz : PCIDIVMODE: 100 (1/10) 265 * CPU 333MHz: PCI 66MHz : PCIDIVMODE: 101 (1/5) 266 */ 267 switch ((unsigned long)__raw_readq(&tx4938_ccfgptr->ccfg) & 268 TX4938_CCFG_PCIDIVMODE_MASK) { 269 case TX4938_CCFG_PCIDIVMODE_8: 270 case TX4938_CCFG_PCIDIVMODE_4: 271 txx9_cpu_clock = 266666666; /* 266MHz */ 272 break; 273 case TX4938_CCFG_PCIDIVMODE_9: 274 case TX4938_CCFG_PCIDIVMODE_4_5: 275 txx9_cpu_clock = 300000000; /* 300MHz */ 276 break; 277 default: 278 txx9_cpu_clock = 333333333; /* 333MHz */ 279 } 280 } 281 282 static void __init rbtx4927_time_init(void) 283 { 284 tx4927_time_init(0); 285 } 286 287 static void __init toshiba_rbtx4927_rtc_init(void) 288 { 289 struct resource res = { 290 .start = RBTX4927_BRAMRTC_BASE - IO_BASE, 291 .end = RBTX4927_BRAMRTC_BASE - IO_BASE + 0x800 - 1, 292 .flags = IORESOURCE_MEM, 293 }; 294 platform_device_register_simple("rtc-ds1742", -1, &res, 1); 295 } 296 297 static void __init rbtx4927_ne_init(void) 298 { 299 struct resource res[] = { 300 { 301 .start = RBTX4927_RTL_8019_BASE, 302 .end = RBTX4927_RTL_8019_BASE + 0x20 - 1, 303 .flags = IORESOURCE_IO, 304 }, { 305 .start = RBTX4927_RTL_8019_IRQ, 306 .flags = IORESOURCE_IRQ, 307 } 308 }; 309 platform_device_register_simple("ne", -1, res, ARRAY_SIZE(res)); 310 } 311 312 static void __init rbtx4927_mtd_init(void) 313 { 314 int i; 315 316 for (i = 0; i < 2; i++) 317 tx4927_mtd_init(i); 318 } 319 320 static void __init rbtx4927_gpioled_init(void) 321 { 322 static const struct gpio_led leds[] = { 323 { .name = "gpioled:green:0", .gpio = 0, .active_low = 1, }, 324 { .name = "gpioled:green:1", .gpio = 1, .active_low = 1, }, 325 }; 326 static struct gpio_led_platform_data pdata = { 327 .num_leds = ARRAY_SIZE(leds), 328 .leds = leds, 329 }; 330 struct platform_device *pdev = platform_device_alloc("leds-gpio", 0); 331 332 if (!pdev) 333 return; 334 pdev->dev.platform_data = &pdata; 335 if (platform_device_add(pdev)) 336 platform_device_put(pdev); 337 } 338 339 static void __init rbtx4927_device_init(void) 340 { 341 toshiba_rbtx4927_rtc_init(); 342 rbtx4927_ne_init(); 343 tx4927_wdt_init(); 344 rbtx4927_mtd_init(); 345 if (TX4927_REV_PCODE() == 0x4927) { 346 tx4927_dmac_init(2); 347 tx4927_aclc_init(0, 1); 348 } else { 349 tx4938_dmac_init(0, 2); 350 tx4938_aclc_init(); 351 } 352 platform_device_register_simple("txx9aclc-generic", -1, NULL, 0); 353 txx9_iocled_init(RBTX4927_LED_ADDR - IO_BASE, -1, 3, 1, "green", NULL); 354 rbtx4927_gpioled_init(); 355 } 356 357 struct txx9_board_vec rbtx4927_vec __initdata = { 358 .system = "Toshiba RBTX4927", 359 .prom_init = rbtx4927_prom_init, 360 .mem_setup = rbtx4927_mem_setup, 361 .irq_setup = rbtx4927_irq_setup, 362 .time_init = rbtx4927_time_init, 363 .device_init = rbtx4927_device_init, 364 .arch_init = rbtx4927_arch_init, 365 #ifdef CONFIG_PCI 366 .pci_map_irq = rbtx4927_pci_map_irq, 367 #endif 368 }; 369 struct txx9_board_vec rbtx4937_vec __initdata = { 370 .system = "Toshiba RBTX4937", 371 .prom_init = rbtx4927_prom_init, 372 .mem_setup = rbtx4927_mem_setup, 373 .irq_setup = rbtx4927_irq_setup, 374 .time_init = rbtx4927_time_init, 375 .device_init = rbtx4927_device_init, 376 .arch_init = rbtx4937_arch_init, 377 #ifdef CONFIG_PCI 378 .pci_map_irq = rbtx4927_pci_map_irq, 379 #endif 380 }; 381