2 * linux/arch/mips/txx9/generic/setup.c
4 * Based on linux/arch/mips/txx9/rbtx4938/setup.c,
5 * and RBTX49xx patch from CELF patch archive.
7 * 2003-2005 (c) MontaVista Software, Inc.
8 * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007
10 * This file is subject to the terms and conditions of the GNU General Public
11 * License. See the file "COPYING" in the main directory of this archive
14 #include <linux/init.h>
15 #include <linux/kernel.h>
16 #include <linux/types.h>
17 #include <linux/interrupt.h>
18 #include <linux/string.h>
19 #include <linux/module.h>
20 #include <linux/clk.h>
21 #include <linux/err.h>
22 #include <linux/gpio.h>
23 #include <linux/platform_device.h>
24 #include <linux/serial_core.h>
25 #include <linux/mtd/physmap.h>
26 #include <linux/leds.h>
27 #include <asm/bootinfo.h>
29 #include <asm/reboot.h>
30 #include <asm/r4kcache.h>
31 #include <asm/sections.h>
32 #include <asm/txx9/generic.h>
33 #include <asm/txx9/pci.h>
34 #include <asm/txx9tmr.h>
35 #include <asm/txx9/ndfmc.h>
36 #ifdef CONFIG_CPU_TX49XX
37 #include <asm/txx9/tx4938.h>
40 /* EBUSC settings of TX4927, etc. */
41 struct resource txx9_ce_res[8];
42 static char txx9_ce_res_name[8][4]; /* "CEn" */
44 /* pcode, internal register */
45 unsigned int txx9_pcode;
46 char txx9_pcode_str[8];
47 static struct resource txx9_reg_res = {
48 .name = txx9_pcode_str,
49 .flags = IORESOURCE_MEM,
52 txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size)
56 for (i = 0; i < ARRAY_SIZE(txx9_ce_res); i++) {
57 sprintf(txx9_ce_res_name[i], "CE%d", i);
58 txx9_ce_res[i].flags = IORESOURCE_MEM;
59 txx9_ce_res[i].name = txx9_ce_res_name[i];
63 sprintf(txx9_pcode_str, "TX%x", pcode);
65 txx9_reg_res.start = base & 0xfffffffffULL;
66 txx9_reg_res.end = (base & 0xfffffffffULL) + (size - 1);
67 request_resource(&iomem_resource, &txx9_reg_res);
72 unsigned int txx9_master_clock;
73 unsigned int txx9_cpu_clock;
74 unsigned int txx9_gbus_clock;
76 #ifdef CONFIG_CPU_TX39XX
77 /* don't enable by default - see errata */
78 int txx9_ccfg_toeon __initdata;
80 int txx9_ccfg_toeon __initdata = 1;
83 /* Minimum CLK support */
85 struct clk *clk_get(struct device *dev, const char *id)
87 if (!strcmp(id, "spi-baseclk"))
88 return (struct clk *)((unsigned long)txx9_gbus_clock / 2 / 4);
89 if (!strcmp(id, "imbus_clk"))
90 return (struct clk *)((unsigned long)txx9_gbus_clock / 2);
91 return ERR_PTR(-ENOENT);
93 EXPORT_SYMBOL(clk_get);
95 int clk_enable(struct clk *clk)
99 EXPORT_SYMBOL(clk_enable);
101 void clk_disable(struct clk *clk)
104 EXPORT_SYMBOL(clk_disable);
106 unsigned long clk_get_rate(struct clk *clk)
108 return (unsigned long)clk;
110 EXPORT_SYMBOL(clk_get_rate);
112 void clk_put(struct clk *clk)
115 EXPORT_SYMBOL(clk_put);
119 #ifdef CONFIG_GENERIC_GPIO
120 int gpio_to_irq(unsigned gpio)
124 EXPORT_SYMBOL(gpio_to_irq);
126 int irq_to_gpio(unsigned irq)
130 EXPORT_SYMBOL(irq_to_gpio);
133 #define BOARD_VEC(board) extern struct txx9_board_vec board;
134 #include <asm/txx9/boards.h>
137 struct txx9_board_vec *txx9_board_vec __initdata;
138 static char txx9_system_type[32];
140 static struct txx9_board_vec *board_vecs[] __initdata = {
141 #define BOARD_VEC(board) &board,
142 #include <asm/txx9/boards.h>
146 static struct txx9_board_vec *__init find_board_byname(const char *name)
150 /* search board_vecs table */
151 for (i = 0; i < ARRAY_SIZE(board_vecs); i++) {
152 if (strstr(board_vecs[i]->system, name))
153 return board_vecs[i];
158 static void __init prom_init_cmdline(void)
162 int i; /* Always ignore the "-c" at argv[0] */
163 char builtin[CL_SIZE];
165 if (fw_arg0 >= CKSEG0 || fw_arg1 < CKSEG0) {
167 * argc is not a valid number, or argv32 is not a valid
174 argv32 = (int *)fw_arg1;
177 /* ignore all built-in args if any f/w args given */
179 * But if built-in strings was started with '+', append them
180 * to command line args. If built-in was started with '-',
181 * ignore all f/w args.
184 if (arcs_cmdline[0] == '+')
185 strcpy(builtin, arcs_cmdline + 1);
186 else if (arcs_cmdline[0] == '-') {
187 strcpy(builtin, arcs_cmdline + 1);
189 } else if (argc <= 1)
190 strcpy(builtin, arcs_cmdline);
191 arcs_cmdline[0] = '\0';
193 for (i = 1; i < argc; i++) {
194 char *str = (char *)(long)argv32[i];
196 strcat(arcs_cmdline, " ");
197 if (strchr(str, ' ')) {
198 strcat(arcs_cmdline, "\"");
199 strcat(arcs_cmdline, str);
200 strcat(arcs_cmdline, "\"");
202 strcat(arcs_cmdline, str);
204 /* append saved builtin args */
207 strcat(arcs_cmdline, " ");
208 strcat(arcs_cmdline, builtin);
212 static int txx9_ic_disable __initdata;
213 static int txx9_dc_disable __initdata;
215 #if defined(CONFIG_CPU_TX49XX)
216 /* flush all cache on very early stage (before 4k_cache_init) */
217 static void __init early_flush_dcache(void)
219 unsigned int conf = read_c0_config();
220 unsigned int dc_size = 1 << (12 + ((conf & CONF_DC) >> 6));
221 unsigned int linesz = 32;
222 unsigned long addr, end;
224 end = INDEX_BASE + dc_size / 4;
226 for (addr = INDEX_BASE; addr < end; addr += linesz) {
227 cache_op(Index_Writeback_Inv_D, addr | 0);
228 cache_op(Index_Writeback_Inv_D, addr | 1);
229 cache_op(Index_Writeback_Inv_D, addr | 2);
230 cache_op(Index_Writeback_Inv_D, addr | 3);
234 static void __init txx9_cache_fixup(void)
238 conf = read_c0_config();
239 /* flush and disable */
240 if (txx9_ic_disable) {
241 conf |= TX49_CONF_IC;
242 write_c0_config(conf);
244 if (txx9_dc_disable) {
245 early_flush_dcache();
246 conf |= TX49_CONF_DC;
247 write_c0_config(conf);
251 conf = read_c0_config();
252 if (!txx9_ic_disable)
253 conf &= ~TX49_CONF_IC;
254 if (!txx9_dc_disable)
255 conf &= ~TX49_CONF_DC;
256 write_c0_config(conf);
258 if (conf & TX49_CONF_IC)
259 pr_info("TX49XX I-Cache disabled.\n");
260 if (conf & TX49_CONF_DC)
261 pr_info("TX49XX D-Cache disabled.\n");
263 #elif defined(CONFIG_CPU_TX39XX)
264 /* flush all cache on very early stage (before tx39_cache_init) */
265 static void __init early_flush_dcache(void)
267 unsigned int conf = read_c0_config();
268 unsigned int dc_size = 1 << (10 + ((conf & TX39_CONF_DCS_MASK) >>
269 TX39_CONF_DCS_SHIFT));
270 unsigned int linesz = 16;
271 unsigned long addr, end;
273 end = INDEX_BASE + dc_size / 2;
275 for (addr = INDEX_BASE; addr < end; addr += linesz) {
276 cache_op(Index_Writeback_Inv_D, addr | 0);
277 cache_op(Index_Writeback_Inv_D, addr | 1);
281 static void __init txx9_cache_fixup(void)
285 conf = read_c0_config();
286 /* flush and disable */
287 if (txx9_ic_disable) {
288 conf &= ~TX39_CONF_ICE;
289 write_c0_config(conf);
291 if (txx9_dc_disable) {
292 early_flush_dcache();
293 conf &= ~TX39_CONF_DCE;
294 write_c0_config(conf);
298 conf = read_c0_config();
299 if (!txx9_ic_disable)
300 conf |= TX39_CONF_ICE;
301 if (!txx9_dc_disable)
302 conf |= TX39_CONF_DCE;
303 write_c0_config(conf);
305 if (!(conf & TX39_CONF_ICE))
306 pr_info("TX39XX I-Cache disabled.\n");
307 if (!(conf & TX39_CONF_DCE))
308 pr_info("TX39XX D-Cache disabled.\n");
311 static inline void txx9_cache_fixup(void)
316 static void __init preprocess_cmdline(void)
318 char cmdline[CL_SIZE];
321 strcpy(cmdline, arcs_cmdline);
323 arcs_cmdline[0] = '\0';
325 char *str = strsep(&s, " ");
326 if (strncmp(str, "board=", 6) == 0) {
327 txx9_board_vec = find_board_byname(str + 6);
329 } else if (strncmp(str, "masterclk=", 10) == 0) {
331 if (strict_strtoul(str + 10, 10, &val) == 0)
332 txx9_master_clock = val;
334 } else if (strcmp(str, "icdisable") == 0) {
337 } else if (strcmp(str, "dcdisable") == 0) {
340 } else if (strcmp(str, "toeoff") == 0) {
343 } else if (strcmp(str, "toeon") == 0) {
348 strcat(arcs_cmdline, " ");
349 strcat(arcs_cmdline, str);
355 static void __init select_board(void)
359 /* first, determine by "board=" argument in preprocess_cmdline() */
362 /* next, determine by "board" envvar */
363 envstr = prom_getenv("board");
365 txx9_board_vec = find_board_byname(envstr);
370 /* select "default" board */
371 #ifdef CONFIG_CPU_TX39XX
372 txx9_board_vec = &jmr3927_vec;
374 #ifdef CONFIG_CPU_TX49XX
375 switch (TX4938_REV_PCODE()) {
376 #ifdef CONFIG_TOSHIBA_RBTX4927
378 txx9_board_vec = &rbtx4927_vec;
381 txx9_board_vec = &rbtx4937_vec;
384 #ifdef CONFIG_TOSHIBA_RBTX4938
386 txx9_board_vec = &rbtx4938_vec;
389 #ifdef CONFIG_TOSHIBA_RBTX4939
391 txx9_board_vec = &rbtx4939_vec;
398 void __init prom_init(void)
401 preprocess_cmdline();
404 strcpy(txx9_system_type, txx9_board_vec->system);
406 txx9_board_vec->prom_init();
409 void __init prom_free_prom_memory(void)
411 unsigned long saddr = PAGE_SIZE;
412 unsigned long eaddr = __pa_symbol(&_text);
415 free_init_pages("prom memory", saddr, eaddr);
418 const char *get_system_type(void)
420 return txx9_system_type;
423 char * __init prom_getcmdline(void)
425 return &(arcs_cmdline[0]);
428 const char *__init prom_getenv(const char *name)
432 if (fw_arg2 < CKSEG0)
435 str = (const s32 *)fw_arg2;
436 /* YAMON style ("name", "value" pairs) */
437 while (str[0] && str[1]) {
438 if (!strcmp((const char *)(unsigned long)str[0], name))
439 return (const char *)(unsigned long)str[1];
445 static void __noreturn txx9_machine_halt(void)
448 clear_c0_status(ST0_IM);
452 if (cpu_has_counter) {
454 * Clear counter interrupt while it
455 * breaks WAIT instruction even if
464 /* Watchdog support */
465 void __init txx9_wdt_init(unsigned long base)
467 struct resource res = {
469 .end = base + 0x100 - 1,
470 .flags = IORESOURCE_MEM,
472 platform_device_register_simple("txx9wdt", -1, &res, 1);
475 void txx9_wdt_now(unsigned long base)
477 struct txx9_tmr_reg __iomem *tmrptr =
478 ioremap(base, sizeof(struct txx9_tmr_reg));
479 /* disable watch dog timer */
480 __raw_writel(TXx9_TMWTMR_WDIS | TXx9_TMWTMR_TWC, &tmrptr->wtmr);
481 __raw_writel(0, &tmrptr->tcr);
483 __raw_writel(TXx9_TMWTMR_TWIE, &tmrptr->wtmr);
484 __raw_writel(1, &tmrptr->cpra); /* immediate */
485 __raw_writel(TXx9_TMTCR_TCE | TXx9_TMTCR_CCDE | TXx9_TMTCR_TMODE_WDOG,
490 void __init txx9_spi_init(int busid, unsigned long base, int irq)
492 struct resource res[] = {
495 .end = base + 0x20 - 1,
496 .flags = IORESOURCE_MEM,
499 .flags = IORESOURCE_IRQ,
502 platform_device_register_simple("spi_txx9", busid,
503 res, ARRAY_SIZE(res));
506 void __init txx9_ethaddr_init(unsigned int id, unsigned char *ethaddr)
508 struct platform_device *pdev =
509 platform_device_alloc("tc35815-mac", id);
511 platform_device_add_data(pdev, ethaddr, 6) ||
512 platform_device_add(pdev))
513 platform_device_put(pdev);
516 void __init txx9_sio_init(unsigned long baseaddr, int irq,
517 unsigned int line, unsigned int sclk, int nocts)
519 #ifdef CONFIG_SERIAL_TXX9
520 struct uart_port req;
522 memset(&req, 0, sizeof(req));
524 req.iotype = UPIO_MEM;
525 req.membase = ioremap(baseaddr, 0x24);
526 req.mapbase = baseaddr;
529 req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
531 req.flags |= UPF_MAGIC_MULTIPLIER /*USE_SCLK*/;
534 req.uartclk = TXX9_IMCLK;
535 early_serial_txx9_setup(&req);
536 #endif /* CONFIG_SERIAL_TXX9 */
539 #ifdef CONFIG_EARLY_PRINTK
540 static void __init null_prom_putchar(char c)
543 void (*txx9_prom_putchar)(char c) __initdata = null_prom_putchar;
545 void __init prom_putchar(char c)
547 txx9_prom_putchar(c);
550 static void __iomem *early_txx9_sio_port;
552 static void __init early_txx9_sio_putchar(char c)
554 #define TXX9_SICISR 0x0c
555 #define TXX9_SITFIFO 0x1c
556 #define TXX9_SICISR_TXALS 0x00000002
557 while (!(__raw_readl(early_txx9_sio_port + TXX9_SICISR) &
560 __raw_writel(c, early_txx9_sio_port + TXX9_SITFIFO);
563 void __init txx9_sio_putchar_init(unsigned long baseaddr)
565 early_txx9_sio_port = ioremap(baseaddr, 0x24);
566 txx9_prom_putchar = early_txx9_sio_putchar;
568 #endif /* CONFIG_EARLY_PRINTK */
571 void __init plat_mem_setup(void)
573 ioport_resource.start = 0;
574 ioport_resource.end = ~0UL; /* no limit */
575 iomem_resource.start = 0;
576 iomem_resource.end = ~0UL; /* no limit */
578 /* fallback restart/halt routines */
579 _machine_restart = (void (*)(char *))txx9_machine_halt;
580 _machine_halt = txx9_machine_halt;
581 pm_power_off = txx9_machine_halt;
584 pcibios_plat_setup = txx9_pcibios_setup;
586 txx9_board_vec->mem_setup();
589 void __init arch_init_irq(void)
591 txx9_board_vec->irq_setup();
594 void __init plat_time_init(void)
596 #ifdef CONFIG_CPU_TX49XX
597 mips_hpt_frequency = txx9_cpu_clock / 2;
599 txx9_board_vec->time_init();
602 static int __init _txx9_arch_init(void)
604 if (txx9_board_vec->arch_init)
605 txx9_board_vec->arch_init();
608 arch_initcall(_txx9_arch_init);
610 static int __init _txx9_device_init(void)
612 if (txx9_board_vec->device_init)
613 txx9_board_vec->device_init();
616 device_initcall(_txx9_device_init);
618 int (*txx9_irq_dispatch)(int pending);
619 asmlinkage void plat_irq_dispatch(void)
621 int pending = read_c0_status() & read_c0_cause() & ST0_IM;
622 int irq = txx9_irq_dispatch(pending);
624 if (likely(irq >= 0))
627 spurious_interrupt();
630 /* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */
631 #ifdef NEEDS_TXX9_SWIZZLE_ADDR_B
632 static unsigned long __swizzle_addr_none(unsigned long port)
636 unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none;
637 EXPORT_SYMBOL(__swizzle_addr_b);
640 #ifdef NEEDS_TXX9_IOSWABW
641 static u16 ioswabw_default(volatile u16 *a, u16 x)
643 return le16_to_cpu(x);
645 static u16 __mem_ioswabw_default(volatile u16 *a, u16 x)
649 u16 (*ioswabw)(volatile u16 *a, u16 x) = ioswabw_default;
650 EXPORT_SYMBOL(ioswabw);
651 u16 (*__mem_ioswabw)(volatile u16 *a, u16 x) = __mem_ioswabw_default;
652 EXPORT_SYMBOL(__mem_ioswabw);
655 void __init txx9_physmap_flash_init(int no, unsigned long addr,
657 const struct physmap_flash_data *pdata)
659 #if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
660 struct resource res = {
662 .end = addr + size - 1,
663 .flags = IORESOURCE_MEM,
665 struct platform_device *pdev;
666 #ifdef CONFIG_MTD_PARTITIONS
667 static struct mtd_partition parts[2];
668 struct physmap_flash_data pdata_part;
670 /* If this area contained boot area, make separate partition */
671 if (pdata->nr_parts == 0 && !pdata->parts &&
672 addr < 0x1fc00000 && addr + size > 0x1fc00000 &&
674 parts[0].name = "boot";
675 parts[0].offset = 0x1fc00000 - addr;
676 parts[0].size = addr + size - 0x1fc00000;
677 parts[1].name = "user";
679 parts[1].size = 0x1fc00000 - addr;
681 pdata_part.nr_parts = ARRAY_SIZE(parts);
682 pdata_part.parts = parts;
686 pdev = platform_device_alloc("physmap-flash", no);
688 platform_device_add_resources(pdev, &res, 1) ||
689 platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
690 platform_device_add(pdev))
691 platform_device_put(pdev);
695 void __init txx9_ndfmc_init(unsigned long baseaddr,
696 const struct txx9ndfmc_platform_data *pdata)
698 #if defined(CONFIG_MTD_NAND_TXX9NDFMC) || \
699 defined(CONFIG_MTD_NAND_TXX9NDFMC_MODULE)
700 struct resource res = {
702 .end = baseaddr + 0x1000 - 1,
703 .flags = IORESOURCE_MEM,
705 struct platform_device *pdev = platform_device_alloc("txx9ndfmc", -1);
708 platform_device_add_resources(pdev, &res, 1) ||
709 platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
710 platform_device_add(pdev))
711 platform_device_put(pdev);
715 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
716 static DEFINE_SPINLOCK(txx9_iocled_lock);
718 #define TXX9_IOCLED_MAXLEDS 8
720 struct txx9_iocled_data {
721 struct gpio_chip chip;
723 void __iomem *mmioaddr;
724 struct gpio_led_platform_data pdata;
725 struct gpio_led leds[TXX9_IOCLED_MAXLEDS];
726 char names[TXX9_IOCLED_MAXLEDS][32];
729 static int txx9_iocled_get(struct gpio_chip *chip, unsigned int offset)
731 struct txx9_iocled_data *data =
732 container_of(chip, struct txx9_iocled_data, chip);
733 return data->cur_val & (1 << offset);
736 static void txx9_iocled_set(struct gpio_chip *chip, unsigned int offset,
739 struct txx9_iocled_data *data =
740 container_of(chip, struct txx9_iocled_data, chip);
742 spin_lock_irqsave(&txx9_iocled_lock, flags);
744 data->cur_val |= 1 << offset;
746 data->cur_val &= ~(1 << offset);
747 writeb(data->cur_val, data->mmioaddr);
749 spin_unlock_irqrestore(&txx9_iocled_lock, flags);
752 static int txx9_iocled_dir_in(struct gpio_chip *chip, unsigned int offset)
757 static int txx9_iocled_dir_out(struct gpio_chip *chip, unsigned int offset,
760 txx9_iocled_set(chip, offset, value);
764 void __init txx9_iocled_init(unsigned long baseaddr,
765 int basenum, unsigned int num, int lowactive,
766 const char *color, char **deftriggers)
768 struct txx9_iocled_data *iocled;
769 struct platform_device *pdev;
771 static char *default_triggers[] __initdata = {
779 deftriggers = default_triggers;
780 iocled = kzalloc(sizeof(*iocled), GFP_KERNEL);
783 iocled->mmioaddr = ioremap(baseaddr, 1);
784 if (!iocled->mmioaddr)
786 iocled->chip.get = txx9_iocled_get;
787 iocled->chip.set = txx9_iocled_set;
788 iocled->chip.direction_input = txx9_iocled_dir_in;
789 iocled->chip.direction_output = txx9_iocled_dir_out;
790 iocled->chip.label = "iocled";
791 iocled->chip.base = basenum;
792 iocled->chip.ngpio = num;
793 if (gpiochip_add(&iocled->chip))
796 basenum = iocled->chip.base;
798 pdev = platform_device_alloc("leds-gpio", basenum);
801 iocled->pdata.num_leds = num;
802 iocled->pdata.leds = iocled->leds;
803 for (i = 0; i < num; i++) {
804 struct gpio_led *led = &iocled->leds[i];
805 snprintf(iocled->names[i], sizeof(iocled->names[i]),
806 "iocled:%s:%u", color, i);
807 led->name = iocled->names[i];
808 led->gpio = basenum + i;
809 led->active_low = lowactive;
810 if (deftriggers && *deftriggers)
811 led->default_trigger = *deftriggers++;
813 pdev->dev.platform_data = &iocled->pdata;
814 if (platform_device_add(pdev))
815 platform_device_put(pdev);
817 #else /* CONFIG_LEDS_GPIO */
818 void __init txx9_iocled_init(unsigned long baseaddr,
819 int basenum, unsigned int num, int lowactive,
820 const char *color, char **deftriggers)
823 #endif /* CONFIG_LEDS_GPIO */