root/arch/mips/txx9/generic/setup.c

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DEFINITIONS

This source file includes following definitions.
  1. txx9_reg_res_init
  2. find_board_byname
  3. prom_init_cmdline
  4. early_flush_dcache
  5. txx9_cache_fixup
  6. early_flush_dcache
  7. txx9_cache_fixup
  8. txx9_cache_fixup
  9. preprocess_cmdline
  10. select_board
  11. prom_init
  12. prom_free_prom_memory
  13. get_system_type
  14. prom_getenv
  15. txx9_machine_halt
  16. txx9_wdt_init
  17. txx9_wdt_now
  18. txx9_spi_init
  19. txx9_ethaddr_init
  20. txx9_sio_init
  21. null_prom_putchar
  22. prom_putchar
  23. early_txx9_sio_putchar
  24. txx9_sio_putchar_init
  25. plat_mem_setup
  26. arch_init_irq
  27. plat_time_init
  28. txx9_clk_init
  29. _txx9_arch_init
  30. _txx9_device_init
  31. plat_irq_dispatch
  32. __swizzle_addr_none
  33. ioswabw_default
  34. __mem_ioswabw_default
  35. txx9_physmap_flash_init
  36. txx9_ndfmc_init
  37. txx9_iocled_get
  38. txx9_iocled_set
  39. txx9_iocled_dir_in
  40. txx9_iocled_dir_out
  41. txx9_iocled_init
  42. txx9_iocled_init
  43. txx9_dmac_init
  44. txx9_aclc_init
  45. txx9_sram_read
  46. txx9_sram_write
  47. txx9_device_release
  48. txx9_sramc_init

   1 /*
   2  * Based on linux/arch/mips/txx9/rbtx4938/setup.c,
   3  *          and RBTX49xx patch from CELF patch archive.
   4  *
   5  * 2003-2005 (c) MontaVista Software, Inc.
   6  * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007
   7  *
   8  * This file is subject to the terms and conditions of the GNU General Public
   9  * License.  See the file "COPYING" in the main directory of this archive
  10  * for more details.
  11  */
  12 #include <linux/init.h>
  13 #include <linux/kernel.h>
  14 #include <linux/types.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/string.h>
  17 #include <linux/export.h>
  18 #include <linux/clk-provider.h>
  19 #include <linux/clkdev.h>
  20 #include <linux/err.h>
  21 #include <linux/gpio/driver.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/platform_data/txx9/ndfmc.h>
  24 #include <linux/serial_core.h>
  25 #include <linux/mtd/physmap.h>
  26 #include <linux/leds.h>
  27 #include <linux/device.h>
  28 #include <linux/slab.h>
  29 #include <linux/io.h>
  30 #include <linux/irq.h>
  31 #include <asm/bootinfo.h>
  32 #include <asm/idle.h>
  33 #include <asm/time.h>
  34 #include <asm/reboot.h>
  35 #include <asm/r4kcache.h>
  36 #include <asm/setup.h>
  37 #include <asm/txx9/generic.h>
  38 #include <asm/txx9/pci.h>
  39 #include <asm/txx9tmr.h>
  40 #include <asm/txx9/dmac.h>
  41 #ifdef CONFIG_CPU_TX49XX
  42 #include <asm/txx9/tx4938.h>
  43 #endif
  44 
  45 /* EBUSC settings of TX4927, etc. */
  46 struct resource txx9_ce_res[8];
  47 static char txx9_ce_res_name[8][4];     /* "CEn" */
  48 
  49 /* pcode, internal register */
  50 unsigned int txx9_pcode;
  51 char txx9_pcode_str[8];
  52 static struct resource txx9_reg_res = {
  53         .name = txx9_pcode_str,
  54         .flags = IORESOURCE_MEM,
  55 };
  56 void __init
  57 txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size)
  58 {
  59         int i;
  60 
  61         for (i = 0; i < ARRAY_SIZE(txx9_ce_res); i++) {
  62                 sprintf(txx9_ce_res_name[i], "CE%d", i);
  63                 txx9_ce_res[i].flags = IORESOURCE_MEM;
  64                 txx9_ce_res[i].name = txx9_ce_res_name[i];
  65         }
  66 
  67         txx9_pcode = pcode;
  68         sprintf(txx9_pcode_str, "TX%x", pcode);
  69         if (base) {
  70                 txx9_reg_res.start = base & 0xfffffffffULL;
  71                 txx9_reg_res.end = (base & 0xfffffffffULL) + (size - 1);
  72                 request_resource(&iomem_resource, &txx9_reg_res);
  73         }
  74 }
  75 
  76 /* clocks */
  77 unsigned int txx9_master_clock;
  78 unsigned int txx9_cpu_clock;
  79 unsigned int txx9_gbus_clock;
  80 
  81 #ifdef CONFIG_CPU_TX39XX
  82 /* don't enable by default - see errata */
  83 int txx9_ccfg_toeon __initdata;
  84 #else
  85 int txx9_ccfg_toeon __initdata = 1;
  86 #endif
  87 
  88 #define BOARD_VEC(board)        extern struct txx9_board_vec board;
  89 #include <asm/txx9/boards.h>
  90 #undef BOARD_VEC
  91 
  92 struct txx9_board_vec *txx9_board_vec __initdata;
  93 static char txx9_system_type[32];
  94 
  95 static struct txx9_board_vec *board_vecs[] __initdata = {
  96 #define BOARD_VEC(board)        &board,
  97 #include <asm/txx9/boards.h>
  98 #undef BOARD_VEC
  99 };
 100 
 101 static struct txx9_board_vec *__init find_board_byname(const char *name)
 102 {
 103         int i;
 104 
 105         /* search board_vecs table */
 106         for (i = 0; i < ARRAY_SIZE(board_vecs); i++) {
 107                 if (strstr(board_vecs[i]->system, name))
 108                         return board_vecs[i];
 109         }
 110         return NULL;
 111 }
 112 
 113 static void __init prom_init_cmdline(void)
 114 {
 115         int argc;
 116         int *argv32;
 117         int i;                  /* Always ignore the "-c" at argv[0] */
 118 
 119         if (fw_arg0 >= CKSEG0 || fw_arg1 < CKSEG0) {
 120                 /*
 121                  * argc is not a valid number, or argv32 is not a valid
 122                  * pointer
 123                  */
 124                 argc = 0;
 125                 argv32 = NULL;
 126         } else {
 127                 argc = (int)fw_arg0;
 128                 argv32 = (int *)fw_arg1;
 129         }
 130 
 131         arcs_cmdline[0] = '\0';
 132 
 133         for (i = 1; i < argc; i++) {
 134                 char *str = (char *)(long)argv32[i];
 135                 if (i != 1)
 136                         strcat(arcs_cmdline, " ");
 137                 if (strchr(str, ' ')) {
 138                         strcat(arcs_cmdline, "\"");
 139                         strcat(arcs_cmdline, str);
 140                         strcat(arcs_cmdline, "\"");
 141                 } else
 142                         strcat(arcs_cmdline, str);
 143         }
 144 }
 145 
 146 static int txx9_ic_disable __initdata;
 147 static int txx9_dc_disable __initdata;
 148 
 149 #if defined(CONFIG_CPU_TX49XX)
 150 /* flush all cache on very early stage (before 4k_cache_init) */
 151 static void __init early_flush_dcache(void)
 152 {
 153         unsigned int conf = read_c0_config();
 154         unsigned int dc_size = 1 << (12 + ((conf & CONF_DC) >> 6));
 155         unsigned int linesz = 32;
 156         unsigned long addr, end;
 157 
 158         end = INDEX_BASE + dc_size / 4;
 159         /* 4way, waybit=0 */
 160         for (addr = INDEX_BASE; addr < end; addr += linesz) {
 161                 cache_op(Index_Writeback_Inv_D, addr | 0);
 162                 cache_op(Index_Writeback_Inv_D, addr | 1);
 163                 cache_op(Index_Writeback_Inv_D, addr | 2);
 164                 cache_op(Index_Writeback_Inv_D, addr | 3);
 165         }
 166 }
 167 
 168 static void __init txx9_cache_fixup(void)
 169 {
 170         unsigned int conf;
 171 
 172         conf = read_c0_config();
 173         /* flush and disable */
 174         if (txx9_ic_disable) {
 175                 conf |= TX49_CONF_IC;
 176                 write_c0_config(conf);
 177         }
 178         if (txx9_dc_disable) {
 179                 early_flush_dcache();
 180                 conf |= TX49_CONF_DC;
 181                 write_c0_config(conf);
 182         }
 183 
 184         /* enable cache */
 185         conf = read_c0_config();
 186         if (!txx9_ic_disable)
 187                 conf &= ~TX49_CONF_IC;
 188         if (!txx9_dc_disable)
 189                 conf &= ~TX49_CONF_DC;
 190         write_c0_config(conf);
 191 
 192         if (conf & TX49_CONF_IC)
 193                 pr_info("TX49XX I-Cache disabled.\n");
 194         if (conf & TX49_CONF_DC)
 195                 pr_info("TX49XX D-Cache disabled.\n");
 196 }
 197 #elif defined(CONFIG_CPU_TX39XX)
 198 /* flush all cache on very early stage (before tx39_cache_init) */
 199 static void __init early_flush_dcache(void)
 200 {
 201         unsigned int conf = read_c0_config();
 202         unsigned int dc_size = 1 << (10 + ((conf & TX39_CONF_DCS_MASK) >>
 203                                            TX39_CONF_DCS_SHIFT));
 204         unsigned int linesz = 16;
 205         unsigned long addr, end;
 206 
 207         end = INDEX_BASE + dc_size / 2;
 208         /* 2way, waybit=0 */
 209         for (addr = INDEX_BASE; addr < end; addr += linesz) {
 210                 cache_op(Index_Writeback_Inv_D, addr | 0);
 211                 cache_op(Index_Writeback_Inv_D, addr | 1);
 212         }
 213 }
 214 
 215 static void __init txx9_cache_fixup(void)
 216 {
 217         unsigned int conf;
 218 
 219         conf = read_c0_config();
 220         /* flush and disable */
 221         if (txx9_ic_disable) {
 222                 conf &= ~TX39_CONF_ICE;
 223                 write_c0_config(conf);
 224         }
 225         if (txx9_dc_disable) {
 226                 early_flush_dcache();
 227                 conf &= ~TX39_CONF_DCE;
 228                 write_c0_config(conf);
 229         }
 230 
 231         /* enable cache */
 232         conf = read_c0_config();
 233         if (!txx9_ic_disable)
 234                 conf |= TX39_CONF_ICE;
 235         if (!txx9_dc_disable)
 236                 conf |= TX39_CONF_DCE;
 237         write_c0_config(conf);
 238 
 239         if (!(conf & TX39_CONF_ICE))
 240                 pr_info("TX39XX I-Cache disabled.\n");
 241         if (!(conf & TX39_CONF_DCE))
 242                 pr_info("TX39XX D-Cache disabled.\n");
 243 }
 244 #else
 245 static inline void txx9_cache_fixup(void)
 246 {
 247 }
 248 #endif
 249 
 250 static void __init preprocess_cmdline(void)
 251 {
 252         static char cmdline[COMMAND_LINE_SIZE] __initdata;
 253         char *s;
 254 
 255         strcpy(cmdline, arcs_cmdline);
 256         s = cmdline;
 257         arcs_cmdline[0] = '\0';
 258         while (s && *s) {
 259                 char *str = strsep(&s, " ");
 260                 if (strncmp(str, "board=", 6) == 0) {
 261                         txx9_board_vec = find_board_byname(str + 6);
 262                         continue;
 263                 } else if (strncmp(str, "masterclk=", 10) == 0) {
 264                         unsigned int val;
 265                         if (kstrtouint(str + 10, 10, &val) == 0)
 266                                 txx9_master_clock = val;
 267                         continue;
 268                 } else if (strcmp(str, "icdisable") == 0) {
 269                         txx9_ic_disable = 1;
 270                         continue;
 271                 } else if (strcmp(str, "dcdisable") == 0) {
 272                         txx9_dc_disable = 1;
 273                         continue;
 274                 } else if (strcmp(str, "toeoff") == 0) {
 275                         txx9_ccfg_toeon = 0;
 276                         continue;
 277                 } else if (strcmp(str, "toeon") == 0) {
 278                         txx9_ccfg_toeon = 1;
 279                         continue;
 280                 }
 281                 if (arcs_cmdline[0])
 282                         strcat(arcs_cmdline, " ");
 283                 strcat(arcs_cmdline, str);
 284         }
 285 
 286         txx9_cache_fixup();
 287 }
 288 
 289 static void __init select_board(void)
 290 {
 291         const char *envstr;
 292 
 293         /* first, determine by "board=" argument in preprocess_cmdline() */
 294         if (txx9_board_vec)
 295                 return;
 296         /* next, determine by "board" envvar */
 297         envstr = prom_getenv("board");
 298         if (envstr) {
 299                 txx9_board_vec = find_board_byname(envstr);
 300                 if (txx9_board_vec)
 301                         return;
 302         }
 303 
 304         /* select "default" board */
 305 #ifdef CONFIG_TOSHIBA_JMR3927
 306         txx9_board_vec = &jmr3927_vec;
 307 #endif
 308 #ifdef CONFIG_CPU_TX49XX
 309         switch (TX4938_REV_PCODE()) {
 310 #ifdef CONFIG_TOSHIBA_RBTX4927
 311         case 0x4927:
 312                 txx9_board_vec = &rbtx4927_vec;
 313                 break;
 314         case 0x4937:
 315                 txx9_board_vec = &rbtx4937_vec;
 316                 break;
 317 #endif
 318 #ifdef CONFIG_TOSHIBA_RBTX4938
 319         case 0x4938:
 320                 txx9_board_vec = &rbtx4938_vec;
 321                 break;
 322 #endif
 323 #ifdef CONFIG_TOSHIBA_RBTX4939
 324         case 0x4939:
 325                 txx9_board_vec = &rbtx4939_vec;
 326                 break;
 327 #endif
 328         }
 329 #endif
 330 }
 331 
 332 void __init prom_init(void)
 333 {
 334         prom_init_cmdline();
 335         preprocess_cmdline();
 336         select_board();
 337 
 338         strcpy(txx9_system_type, txx9_board_vec->system);
 339 
 340         txx9_board_vec->prom_init();
 341 }
 342 
 343 void __init prom_free_prom_memory(void)
 344 {
 345 }
 346 
 347 const char *get_system_type(void)
 348 {
 349         return txx9_system_type;
 350 }
 351 
 352 const char *__init prom_getenv(const char *name)
 353 {
 354         const s32 *str;
 355 
 356         if (fw_arg2 < CKSEG0)
 357                 return NULL;
 358 
 359         str = (const s32 *)fw_arg2;
 360         /* YAMON style ("name", "value" pairs) */
 361         while (str[0] && str[1]) {
 362                 if (!strcmp((const char *)(unsigned long)str[0], name))
 363                         return (const char *)(unsigned long)str[1];
 364                 str += 2;
 365         }
 366         return NULL;
 367 }
 368 
 369 static void __noreturn txx9_machine_halt(void)
 370 {
 371         local_irq_disable();
 372         clear_c0_status(ST0_IM);
 373         while (1) {
 374                 if (cpu_wait) {
 375                         (*cpu_wait)();
 376                         if (cpu_has_counter) {
 377                                 /*
 378                                  * Clear counter interrupt while it
 379                                  * breaks WAIT instruction even if
 380                                  * masked.
 381                                  */
 382                                 write_c0_compare(0);
 383                         }
 384                 }
 385         }
 386 }
 387 
 388 /* Watchdog support */
 389 void __init txx9_wdt_init(unsigned long base)
 390 {
 391         struct resource res = {
 392                 .start  = base,
 393                 .end    = base + 0x100 - 1,
 394                 .flags  = IORESOURCE_MEM,
 395         };
 396         platform_device_register_simple("txx9wdt", -1, &res, 1);
 397 }
 398 
 399 void txx9_wdt_now(unsigned long base)
 400 {
 401         struct txx9_tmr_reg __iomem *tmrptr =
 402                 ioremap(base, sizeof(struct txx9_tmr_reg));
 403         /* disable watch dog timer */
 404         __raw_writel(TXx9_TMWTMR_WDIS | TXx9_TMWTMR_TWC, &tmrptr->wtmr);
 405         __raw_writel(0, &tmrptr->tcr);
 406         /* kick watchdog */
 407         __raw_writel(TXx9_TMWTMR_TWIE, &tmrptr->wtmr);
 408         __raw_writel(1, &tmrptr->cpra); /* immediate */
 409         __raw_writel(TXx9_TMTCR_TCE | TXx9_TMTCR_CCDE | TXx9_TMTCR_TMODE_WDOG,
 410                      &tmrptr->tcr);
 411 }
 412 
 413 /* SPI support */
 414 void __init txx9_spi_init(int busid, unsigned long base, int irq)
 415 {
 416         struct resource res[] = {
 417                 {
 418                         .start  = base,
 419                         .end    = base + 0x20 - 1,
 420                         .flags  = IORESOURCE_MEM,
 421                 }, {
 422                         .start  = irq,
 423                         .flags  = IORESOURCE_IRQ,
 424                 },
 425         };
 426         platform_device_register_simple("spi_txx9", busid,
 427                                         res, ARRAY_SIZE(res));
 428 }
 429 
 430 void __init txx9_ethaddr_init(unsigned int id, unsigned char *ethaddr)
 431 {
 432         struct platform_device *pdev =
 433                 platform_device_alloc("tc35815-mac", id);
 434         if (!pdev ||
 435             platform_device_add_data(pdev, ethaddr, 6) ||
 436             platform_device_add(pdev))
 437                 platform_device_put(pdev);
 438 }
 439 
 440 void __init txx9_sio_init(unsigned long baseaddr, int irq,
 441                           unsigned int line, unsigned int sclk, int nocts)
 442 {
 443 #ifdef CONFIG_SERIAL_TXX9
 444         struct uart_port req;
 445 
 446         memset(&req, 0, sizeof(req));
 447         req.line = line;
 448         req.iotype = UPIO_MEM;
 449         req.membase = ioremap(baseaddr, 0x24);
 450         req.mapbase = baseaddr;
 451         req.irq = irq;
 452         if (!nocts)
 453                 req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
 454         if (sclk) {
 455                 req.flags |= UPF_MAGIC_MULTIPLIER /*USE_SCLK*/;
 456                 req.uartclk = sclk;
 457         } else
 458                 req.uartclk = TXX9_IMCLK;
 459         early_serial_txx9_setup(&req);
 460 #endif /* CONFIG_SERIAL_TXX9 */
 461 }
 462 
 463 #ifdef CONFIG_EARLY_PRINTK
 464 static void null_prom_putchar(char c)
 465 {
 466 }
 467 void (*txx9_prom_putchar)(char c) = null_prom_putchar;
 468 
 469 void prom_putchar(char c)
 470 {
 471         txx9_prom_putchar(c);
 472 }
 473 
 474 static void __iomem *early_txx9_sio_port;
 475 
 476 static void early_txx9_sio_putchar(char c)
 477 {
 478 #define TXX9_SICISR     0x0c
 479 #define TXX9_SITFIFO    0x1c
 480 #define TXX9_SICISR_TXALS       0x00000002
 481         while (!(__raw_readl(early_txx9_sio_port + TXX9_SICISR) &
 482                  TXX9_SICISR_TXALS))
 483                 ;
 484         __raw_writel(c, early_txx9_sio_port + TXX9_SITFIFO);
 485 }
 486 
 487 void __init txx9_sio_putchar_init(unsigned long baseaddr)
 488 {
 489         early_txx9_sio_port = ioremap(baseaddr, 0x24);
 490         txx9_prom_putchar = early_txx9_sio_putchar;
 491 }
 492 #endif /* CONFIG_EARLY_PRINTK */
 493 
 494 /* wrappers */
 495 void __init plat_mem_setup(void)
 496 {
 497         ioport_resource.start = 0;
 498         ioport_resource.end = ~0UL;     /* no limit */
 499         iomem_resource.start = 0;
 500         iomem_resource.end = ~0UL;      /* no limit */
 501 
 502         /* fallback restart/halt routines */
 503         _machine_restart = (void (*)(char *))txx9_machine_halt;
 504         _machine_halt = txx9_machine_halt;
 505         pm_power_off = txx9_machine_halt;
 506 
 507 #ifdef CONFIG_PCI
 508         pcibios_plat_setup = txx9_pcibios_setup;
 509 #endif
 510         txx9_board_vec->mem_setup();
 511 }
 512 
 513 void __init arch_init_irq(void)
 514 {
 515         txx9_board_vec->irq_setup();
 516 }
 517 
 518 void __init plat_time_init(void)
 519 {
 520 #ifdef CONFIG_CPU_TX49XX
 521         mips_hpt_frequency = txx9_cpu_clock / 2;
 522 #endif
 523         txx9_board_vec->time_init();
 524 }
 525 
 526 static void txx9_clk_init(void)
 527 {
 528         struct clk_hw *hw;
 529         int error;
 530 
 531         hw = clk_hw_register_fixed_rate(NULL, "gbus", NULL, 0, txx9_gbus_clock);
 532         if (IS_ERR(hw)) {
 533                 error = PTR_ERR(hw);
 534                 goto fail;
 535         }
 536 
 537         hw = clk_hw_register_fixed_factor(NULL, "imbus", "gbus", 0, 1, 2);
 538         error = clk_hw_register_clkdev(hw, "imbus_clk", NULL);
 539         if (error)
 540                 goto fail;
 541 
 542 #ifdef CONFIG_CPU_TX49XX
 543         if (TX4938_REV_PCODE() == 0x4938) {
 544                 hw = clk_hw_register_fixed_factor(NULL, "spi", "gbus", 0, 1, 4);
 545                 error = clk_hw_register_clkdev(hw, "spi-baseclk", NULL);
 546                 if (error)
 547                         goto fail;
 548         }
 549 #endif
 550 
 551         return;
 552 
 553 fail:
 554         pr_err("Failed to register clocks: %d\n", error);
 555 }
 556 
 557 static int __init _txx9_arch_init(void)
 558 {
 559         txx9_clk_init();
 560 
 561         if (txx9_board_vec->arch_init)
 562                 txx9_board_vec->arch_init();
 563         return 0;
 564 }
 565 arch_initcall(_txx9_arch_init);
 566 
 567 static int __init _txx9_device_init(void)
 568 {
 569         if (txx9_board_vec->device_init)
 570                 txx9_board_vec->device_init();
 571         return 0;
 572 }
 573 device_initcall(_txx9_device_init);
 574 
 575 int (*txx9_irq_dispatch)(int pending);
 576 asmlinkage void plat_irq_dispatch(void)
 577 {
 578         int pending = read_c0_status() & read_c0_cause() & ST0_IM;
 579         int irq = txx9_irq_dispatch(pending);
 580 
 581         if (likely(irq >= 0))
 582                 do_IRQ(irq);
 583         else
 584                 spurious_interrupt();
 585 }
 586 
 587 /* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */
 588 #ifdef NEEDS_TXX9_SWIZZLE_ADDR_B
 589 static unsigned long __swizzle_addr_none(unsigned long port)
 590 {
 591         return port;
 592 }
 593 unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none;
 594 EXPORT_SYMBOL(__swizzle_addr_b);
 595 #endif
 596 
 597 #ifdef NEEDS_TXX9_IOSWABW
 598 static u16 ioswabw_default(volatile u16 *a, u16 x)
 599 {
 600         return le16_to_cpu(x);
 601 }
 602 static u16 __mem_ioswabw_default(volatile u16 *a, u16 x)
 603 {
 604         return x;
 605 }
 606 u16 (*ioswabw)(volatile u16 *a, u16 x) = ioswabw_default;
 607 EXPORT_SYMBOL(ioswabw);
 608 u16 (*__mem_ioswabw)(volatile u16 *a, u16 x) = __mem_ioswabw_default;
 609 EXPORT_SYMBOL(__mem_ioswabw);
 610 #endif
 611 
 612 void __init txx9_physmap_flash_init(int no, unsigned long addr,
 613                                     unsigned long size,
 614                                     const struct physmap_flash_data *pdata)
 615 {
 616 #if IS_ENABLED(CONFIG_MTD_PHYSMAP)
 617         struct resource res = {
 618                 .start = addr,
 619                 .end = addr + size - 1,
 620                 .flags = IORESOURCE_MEM,
 621         };
 622         struct platform_device *pdev;
 623         static struct mtd_partition parts[2];
 624         struct physmap_flash_data pdata_part;
 625 
 626         /* If this area contained boot area, make separate partition */
 627         if (pdata->nr_parts == 0 && !pdata->parts &&
 628             addr < 0x1fc00000 && addr + size > 0x1fc00000 &&
 629             !parts[0].name) {
 630                 parts[0].name = "boot";
 631                 parts[0].offset = 0x1fc00000 - addr;
 632                 parts[0].size = addr + size - 0x1fc00000;
 633                 parts[1].name = "user";
 634                 parts[1].offset = 0;
 635                 parts[1].size = 0x1fc00000 - addr;
 636                 pdata_part = *pdata;
 637                 pdata_part.nr_parts = ARRAY_SIZE(parts);
 638                 pdata_part.parts = parts;
 639                 pdata = &pdata_part;
 640         }
 641 
 642         pdev = platform_device_alloc("physmap-flash", no);
 643         if (!pdev ||
 644             platform_device_add_resources(pdev, &res, 1) ||
 645             platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
 646             platform_device_add(pdev))
 647                 platform_device_put(pdev);
 648 #endif
 649 }
 650 
 651 void __init txx9_ndfmc_init(unsigned long baseaddr,
 652                             const struct txx9ndfmc_platform_data *pdata)
 653 {
 654 #if IS_ENABLED(CONFIG_MTD_NAND_TXX9NDFMC)
 655         struct resource res = {
 656                 .start = baseaddr,
 657                 .end = baseaddr + 0x1000 - 1,
 658                 .flags = IORESOURCE_MEM,
 659         };
 660         struct platform_device *pdev = platform_device_alloc("txx9ndfmc", -1);
 661 
 662         if (!pdev ||
 663             platform_device_add_resources(pdev, &res, 1) ||
 664             platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
 665             platform_device_add(pdev))
 666                 platform_device_put(pdev);
 667 #endif
 668 }
 669 
 670 #if IS_ENABLED(CONFIG_LEDS_GPIO)
 671 static DEFINE_SPINLOCK(txx9_iocled_lock);
 672 
 673 #define TXX9_IOCLED_MAXLEDS 8
 674 
 675 struct txx9_iocled_data {
 676         struct gpio_chip chip;
 677         u8 cur_val;
 678         void __iomem *mmioaddr;
 679         struct gpio_led_platform_data pdata;
 680         struct gpio_led leds[TXX9_IOCLED_MAXLEDS];
 681         char names[TXX9_IOCLED_MAXLEDS][32];
 682 };
 683 
 684 static int txx9_iocled_get(struct gpio_chip *chip, unsigned int offset)
 685 {
 686         struct txx9_iocled_data *data = gpiochip_get_data(chip);
 687         return !!(data->cur_val & (1 << offset));
 688 }
 689 
 690 static void txx9_iocled_set(struct gpio_chip *chip, unsigned int offset,
 691                             int value)
 692 {
 693         struct txx9_iocled_data *data = gpiochip_get_data(chip);
 694         unsigned long flags;
 695         spin_lock_irqsave(&txx9_iocled_lock, flags);
 696         if (value)
 697                 data->cur_val |= 1 << offset;
 698         else
 699                 data->cur_val &= ~(1 << offset);
 700         writeb(data->cur_val, data->mmioaddr);
 701         mmiowb();
 702         spin_unlock_irqrestore(&txx9_iocled_lock, flags);
 703 }
 704 
 705 static int txx9_iocled_dir_in(struct gpio_chip *chip, unsigned int offset)
 706 {
 707         return 0;
 708 }
 709 
 710 static int txx9_iocled_dir_out(struct gpio_chip *chip, unsigned int offset,
 711                                int value)
 712 {
 713         txx9_iocled_set(chip, offset, value);
 714         return 0;
 715 }
 716 
 717 void __init txx9_iocled_init(unsigned long baseaddr,
 718                              int basenum, unsigned int num, int lowactive,
 719                              const char *color, char **deftriggers)
 720 {
 721         struct txx9_iocled_data *iocled;
 722         struct platform_device *pdev;
 723         int i;
 724         static char *default_triggers[] __initdata = {
 725                 "heartbeat",
 726                 "disk-activity",
 727                 "nand-disk",
 728                 NULL,
 729         };
 730 
 731         if (!deftriggers)
 732                 deftriggers = default_triggers;
 733         iocled = kzalloc(sizeof(*iocled), GFP_KERNEL);
 734         if (!iocled)
 735                 return;
 736         iocled->mmioaddr = ioremap(baseaddr, 1);
 737         if (!iocled->mmioaddr)
 738                 goto out_free;
 739         iocled->chip.get = txx9_iocled_get;
 740         iocled->chip.set = txx9_iocled_set;
 741         iocled->chip.direction_input = txx9_iocled_dir_in;
 742         iocled->chip.direction_output = txx9_iocled_dir_out;
 743         iocled->chip.label = "iocled";
 744         iocled->chip.base = basenum;
 745         iocled->chip.ngpio = num;
 746         if (gpiochip_add_data(&iocled->chip, iocled))
 747                 goto out_unmap;
 748         if (basenum < 0)
 749                 basenum = iocled->chip.base;
 750 
 751         pdev = platform_device_alloc("leds-gpio", basenum);
 752         if (!pdev)
 753                 goto out_gpio;
 754         iocled->pdata.num_leds = num;
 755         iocled->pdata.leds = iocled->leds;
 756         for (i = 0; i < num; i++) {
 757                 struct gpio_led *led = &iocled->leds[i];
 758                 snprintf(iocled->names[i], sizeof(iocled->names[i]),
 759                          "iocled:%s:%u", color, i);
 760                 led->name = iocled->names[i];
 761                 led->gpio = basenum + i;
 762                 led->active_low = lowactive;
 763                 if (deftriggers && *deftriggers)
 764                         led->default_trigger = *deftriggers++;
 765         }
 766         pdev->dev.platform_data = &iocled->pdata;
 767         if (platform_device_add(pdev))
 768                 goto out_pdev;
 769         return;
 770 
 771 out_pdev:
 772         platform_device_put(pdev);
 773 out_gpio:
 774         gpiochip_remove(&iocled->chip);
 775 out_unmap:
 776         iounmap(iocled->mmioaddr);
 777 out_free:
 778         kfree(iocled);
 779 }
 780 #else /* CONFIG_LEDS_GPIO */
 781 void __init txx9_iocled_init(unsigned long baseaddr,
 782                              int basenum, unsigned int num, int lowactive,
 783                              const char *color, char **deftriggers)
 784 {
 785 }
 786 #endif /* CONFIG_LEDS_GPIO */
 787 
 788 void __init txx9_dmac_init(int id, unsigned long baseaddr, int irq,
 789                            const struct txx9dmac_platform_data *pdata)
 790 {
 791 #if IS_ENABLED(CONFIG_TXX9_DMAC)
 792         struct resource res[] = {
 793                 {
 794                         .start = baseaddr,
 795                         .end = baseaddr + 0x800 - 1,
 796                         .flags = IORESOURCE_MEM,
 797 #ifndef CONFIG_MACH_TX49XX
 798                 }, {
 799                         .start = irq,
 800                         .flags = IORESOURCE_IRQ,
 801 #endif
 802                 }
 803         };
 804 #ifdef CONFIG_MACH_TX49XX
 805         struct resource chan_res[] = {
 806                 {
 807                         .flags = IORESOURCE_IRQ,
 808                 }
 809         };
 810 #endif
 811         struct platform_device *pdev = platform_device_alloc("txx9dmac", id);
 812         struct txx9dmac_chan_platform_data cpdata;
 813         int i;
 814 
 815         if (!pdev ||
 816             platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) ||
 817             platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
 818             platform_device_add(pdev)) {
 819                 platform_device_put(pdev);
 820                 return;
 821         }
 822         memset(&cpdata, 0, sizeof(cpdata));
 823         cpdata.dmac_dev = pdev;
 824         for (i = 0; i < TXX9_DMA_MAX_NR_CHANNELS; i++) {
 825 #ifdef CONFIG_MACH_TX49XX
 826                 chan_res[0].start = irq + i;
 827 #endif
 828                 pdev = platform_device_alloc("txx9dmac-chan",
 829                                              id * TXX9_DMA_MAX_NR_CHANNELS + i);
 830                 if (!pdev ||
 831 #ifdef CONFIG_MACH_TX49XX
 832                     platform_device_add_resources(pdev, chan_res,
 833                                                   ARRAY_SIZE(chan_res)) ||
 834 #endif
 835                     platform_device_add_data(pdev, &cpdata, sizeof(cpdata)) ||
 836                     platform_device_add(pdev))
 837                         platform_device_put(pdev);
 838         }
 839 #endif
 840 }
 841 
 842 void __init txx9_aclc_init(unsigned long baseaddr, int irq,
 843                            unsigned int dmac_id,
 844                            unsigned int dma_chan_out,
 845                            unsigned int dma_chan_in)
 846 {
 847 #if IS_ENABLED(CONFIG_SND_SOC_TXX9ACLC)
 848         unsigned int dma_base = dmac_id * TXX9_DMA_MAX_NR_CHANNELS;
 849         struct resource res[] = {
 850                 {
 851                         .start = baseaddr,
 852                         .end = baseaddr + 0x100 - 1,
 853                         .flags = IORESOURCE_MEM,
 854                 }, {
 855                         .start = irq,
 856                         .flags = IORESOURCE_IRQ,
 857                 }, {
 858                         .name = "txx9dmac-chan",
 859                         .start = dma_base + dma_chan_out,
 860                         .flags = IORESOURCE_DMA,
 861                 }, {
 862                         .name = "txx9dmac-chan",
 863                         .start = dma_base + dma_chan_in,
 864                         .flags = IORESOURCE_DMA,
 865                 }
 866         };
 867         struct platform_device *pdev =
 868                 platform_device_alloc("txx9aclc-ac97", -1);
 869 
 870         if (!pdev ||
 871             platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) ||
 872             platform_device_add(pdev))
 873                 platform_device_put(pdev);
 874 #endif
 875 }
 876 
 877 static struct bus_type txx9_sramc_subsys = {
 878         .name = "txx9_sram",
 879         .dev_name = "txx9_sram",
 880 };
 881 
 882 struct txx9_sramc_dev {
 883         struct device dev;
 884         struct bin_attribute bindata_attr;
 885         void __iomem *base;
 886 };
 887 
 888 static ssize_t txx9_sram_read(struct file *filp, struct kobject *kobj,
 889                               struct bin_attribute *bin_attr,
 890                               char *buf, loff_t pos, size_t size)
 891 {
 892         struct txx9_sramc_dev *dev = bin_attr->private;
 893         size_t ramsize = bin_attr->size;
 894 
 895         if (pos >= ramsize)
 896                 return 0;
 897         if (pos + size > ramsize)
 898                 size = ramsize - pos;
 899         memcpy_fromio(buf, dev->base + pos, size);
 900         return size;
 901 }
 902 
 903 static ssize_t txx9_sram_write(struct file *filp, struct kobject *kobj,
 904                                struct bin_attribute *bin_attr,
 905                                char *buf, loff_t pos, size_t size)
 906 {
 907         struct txx9_sramc_dev *dev = bin_attr->private;
 908         size_t ramsize = bin_attr->size;
 909 
 910         if (pos >= ramsize)
 911                 return 0;
 912         if (pos + size > ramsize)
 913                 size = ramsize - pos;
 914         memcpy_toio(dev->base + pos, buf, size);
 915         return size;
 916 }
 917 
 918 static void txx9_device_release(struct device *dev)
 919 {
 920         struct txx9_sramc_dev *tdev;
 921 
 922         tdev = container_of(dev, struct txx9_sramc_dev, dev);
 923         kfree(tdev);
 924 }
 925 
 926 void __init txx9_sramc_init(struct resource *r)
 927 {
 928         struct txx9_sramc_dev *dev;
 929         size_t size;
 930         int err;
 931 
 932         err = subsys_system_register(&txx9_sramc_subsys, NULL);
 933         if (err)
 934                 return;
 935         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 936         if (!dev)
 937                 return;
 938         size = resource_size(r);
 939         dev->base = ioremap(r->start, size);
 940         if (!dev->base) {
 941                 kfree(dev);
 942                 return;
 943         }
 944         dev->dev.release = &txx9_device_release;
 945         dev->dev.bus = &txx9_sramc_subsys;
 946         sysfs_bin_attr_init(&dev->bindata_attr);
 947         dev->bindata_attr.attr.name = "bindata";
 948         dev->bindata_attr.attr.mode = S_IRUSR | S_IWUSR;
 949         dev->bindata_attr.read = txx9_sram_read;
 950         dev->bindata_attr.write = txx9_sram_write;
 951         dev->bindata_attr.size = size;
 952         dev->bindata_attr.private = dev;
 953         err = device_register(&dev->dev);
 954         if (err)
 955                 goto exit_put;
 956         err = sysfs_create_bin_file(&dev->dev.kobj, &dev->bindata_attr);
 957         if (err) {
 958                 iounmap(dev->base);
 959                 device_unregister(&dev->dev);
 960         }
 961         return;
 962 exit_put:
 963         iounmap(dev->base);
 964         put_device(&dev->dev);
 965 }

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