Commit | Line | Data |
---|---|---|
89d63fe1 AN |
1 | /* |
2 | * linux/arch/mips/txx9/generic/setup.c | |
3 | * | |
4 | * Based on linux/arch/mips/txx9/rbtx4938/setup.c, | |
5 | * and RBTX49xx patch from CELF patch archive. | |
6 | * | |
7 | * 2003-2005 (c) MontaVista Software, Inc. | |
8 | * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007 | |
9 | * | |
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 | |
12 | * for more details. | |
13 | */ | |
14 | #include <linux/init.h> | |
15 | #include <linux/kernel.h> | |
16 | #include <linux/types.h> | |
edcaf1a6 AN |
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> | |
e0eb7307 | 22 | #include <linux/gpio.h> |
68314725 | 23 | #include <linux/platform_device.h> |
7779a5e0 | 24 | #include <linux/serial_core.h> |
edcaf1a6 | 25 | #include <asm/bootinfo.h> |
e0eb7307 | 26 | #include <asm/time.h> |
a49297e8 | 27 | #include <asm/reboot.h> |
89d63fe1 | 28 | #include <asm/txx9/generic.h> |
07517529 | 29 | #include <asm/txx9/pci.h> |
edcaf1a6 AN |
30 | #ifdef CONFIG_CPU_TX49XX |
31 | #include <asm/txx9/tx4938.h> | |
32 | #endif | |
89d63fe1 AN |
33 | |
34 | /* EBUSC settings of TX4927, etc. */ | |
35 | struct resource txx9_ce_res[8]; | |
36 | static char txx9_ce_res_name[8][4]; /* "CEn" */ | |
37 | ||
38 | /* pcode, internal register */ | |
94a4c329 | 39 | unsigned int txx9_pcode; |
89d63fe1 AN |
40 | char txx9_pcode_str[8]; |
41 | static struct resource txx9_reg_res = { | |
42 | .name = txx9_pcode_str, | |
43 | .flags = IORESOURCE_MEM, | |
44 | }; | |
45 | void __init | |
46 | txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size) | |
47 | { | |
48 | int i; | |
49 | ||
50 | for (i = 0; i < ARRAY_SIZE(txx9_ce_res); i++) { | |
51 | sprintf(txx9_ce_res_name[i], "CE%d", i); | |
52 | txx9_ce_res[i].flags = IORESOURCE_MEM; | |
53 | txx9_ce_res[i].name = txx9_ce_res_name[i]; | |
54 | } | |
55 | ||
56 | sprintf(txx9_pcode_str, "TX%x", pcode); | |
57 | if (base) { | |
58 | txx9_reg_res.start = base & 0xfffffffffULL; | |
59 | txx9_reg_res.end = (base & 0xfffffffffULL) + (size - 1); | |
60 | request_resource(&iomem_resource, &txx9_reg_res); | |
61 | } | |
62 | } | |
63 | ||
64 | /* clocks */ | |
65 | unsigned int txx9_master_clock; | |
66 | unsigned int txx9_cpu_clock; | |
67 | unsigned int txx9_gbus_clock; | |
edcaf1a6 | 68 | |
94a4c329 | 69 | int txx9_ccfg_toeon __initdata = 1; |
edcaf1a6 AN |
70 | |
71 | /* Minimum CLK support */ | |
72 | ||
73 | struct clk *clk_get(struct device *dev, const char *id) | |
74 | { | |
75 | if (!strcmp(id, "spi-baseclk")) | |
94a4c329 | 76 | return (struct clk *)((unsigned long)txx9_gbus_clock / 2 / 4); |
edcaf1a6 | 77 | if (!strcmp(id, "imbus_clk")) |
94a4c329 | 78 | return (struct clk *)((unsigned long)txx9_gbus_clock / 2); |
edcaf1a6 AN |
79 | return ERR_PTR(-ENOENT); |
80 | } | |
81 | EXPORT_SYMBOL(clk_get); | |
82 | ||
83 | int clk_enable(struct clk *clk) | |
84 | { | |
85 | return 0; | |
86 | } | |
87 | EXPORT_SYMBOL(clk_enable); | |
88 | ||
89 | void clk_disable(struct clk *clk) | |
90 | { | |
91 | } | |
92 | EXPORT_SYMBOL(clk_disable); | |
93 | ||
94 | unsigned long clk_get_rate(struct clk *clk) | |
95 | { | |
96 | return (unsigned long)clk; | |
97 | } | |
98 | EXPORT_SYMBOL(clk_get_rate); | |
99 | ||
100 | void clk_put(struct clk *clk) | |
101 | { | |
102 | } | |
103 | EXPORT_SYMBOL(clk_put); | |
104 | ||
8d795f2a AN |
105 | /* GPIO support */ |
106 | ||
107 | #ifdef CONFIG_GENERIC_GPIO | |
108 | int gpio_to_irq(unsigned gpio) | |
109 | { | |
110 | return -EINVAL; | |
111 | } | |
112 | EXPORT_SYMBOL(gpio_to_irq); | |
113 | ||
114 | int irq_to_gpio(unsigned irq) | |
115 | { | |
116 | return -EINVAL; | |
117 | } | |
118 | EXPORT_SYMBOL(irq_to_gpio); | |
119 | #endif | |
120 | ||
edcaf1a6 AN |
121 | extern struct txx9_board_vec jmr3927_vec; |
122 | extern struct txx9_board_vec rbtx4927_vec; | |
123 | extern struct txx9_board_vec rbtx4937_vec; | |
124 | extern struct txx9_board_vec rbtx4938_vec; | |
125 | ||
edcaf1a6 AN |
126 | struct txx9_board_vec *txx9_board_vec __initdata; |
127 | static char txx9_system_type[32]; | |
128 | ||
129 | void __init prom_init_cmdline(void) | |
130 | { | |
131 | int argc = (int)fw_arg0; | |
132 | char **argv = (char **)fw_arg1; | |
133 | int i; /* Always ignore the "-c" at argv[0] */ | |
94a4c329 AN |
134 | #ifdef CONFIG_64BIT |
135 | char *fixed_argv[32]; | |
136 | for (i = 0; i < argc; i++) | |
137 | fixed_argv[i] = (char *)(long)(*((__s32 *)argv + i)); | |
138 | argv = fixed_argv; | |
139 | #endif | |
edcaf1a6 AN |
140 | |
141 | /* ignore all built-in args if any f/w args given */ | |
142 | if (argc > 1) | |
143 | *arcs_cmdline = '\0'; | |
144 | ||
145 | for (i = 1; i < argc; i++) { | |
146 | if (i != 1) | |
147 | strcat(arcs_cmdline, " "); | |
148 | strcat(arcs_cmdline, argv[i]); | |
149 | } | |
150 | } | |
151 | ||
152 | void __init prom_init(void) | |
153 | { | |
edcaf1a6 | 154 | #ifdef CONFIG_CPU_TX39XX |
7a1fdf19 | 155 | txx9_board_vec = &jmr3927_vec; |
edcaf1a6 AN |
156 | #endif |
157 | #ifdef CONFIG_CPU_TX49XX | |
158 | switch (TX4938_REV_PCODE()) { | |
8d795f2a | 159 | #ifdef CONFIG_TOSHIBA_RBTX4927 |
edcaf1a6 | 160 | case 0x4927: |
7a1fdf19 | 161 | txx9_board_vec = &rbtx4927_vec; |
edcaf1a6 AN |
162 | break; |
163 | case 0x4937: | |
7a1fdf19 | 164 | txx9_board_vec = &rbtx4937_vec; |
edcaf1a6 | 165 | break; |
8d795f2a AN |
166 | #endif |
167 | #ifdef CONFIG_TOSHIBA_RBTX4938 | |
edcaf1a6 | 168 | case 0x4938: |
7a1fdf19 | 169 | txx9_board_vec = &rbtx4938_vec; |
edcaf1a6 | 170 | break; |
8d795f2a | 171 | #endif |
edcaf1a6 AN |
172 | } |
173 | #endif | |
7a1fdf19 YY |
174 | |
175 | strcpy(txx9_system_type, txx9_board_vec->system); | |
176 | ||
7b226094 | 177 | txx9_board_vec->prom_init(); |
edcaf1a6 AN |
178 | } |
179 | ||
180 | void __init prom_free_prom_memory(void) | |
181 | { | |
182 | } | |
183 | ||
184 | const char *get_system_type(void) | |
185 | { | |
186 | return txx9_system_type; | |
187 | } | |
188 | ||
189 | char * __init prom_getcmdline(void) | |
190 | { | |
191 | return &(arcs_cmdline[0]); | |
192 | } | |
193 | ||
a49297e8 AN |
194 | static void __noreturn txx9_machine_halt(void) |
195 | { | |
196 | local_irq_disable(); | |
197 | clear_c0_status(ST0_IM); | |
198 | while (1) { | |
199 | if (cpu_wait) { | |
200 | (*cpu_wait)(); | |
201 | if (cpu_has_counter) { | |
202 | /* | |
203 | * Clear counter interrupt while it | |
204 | * breaks WAIT instruction even if | |
205 | * masked. | |
206 | */ | |
207 | write_c0_compare(0); | |
208 | } | |
209 | } | |
210 | } | |
211 | } | |
212 | ||
68314725 AN |
213 | /* Watchdog support */ |
214 | void __init txx9_wdt_init(unsigned long base) | |
215 | { | |
216 | struct resource res = { | |
217 | .start = base, | |
218 | .end = base + 0x100 - 1, | |
219 | .flags = IORESOURCE_MEM, | |
220 | }; | |
221 | platform_device_register_simple("txx9wdt", -1, &res, 1); | |
222 | } | |
223 | ||
c49f91f5 AN |
224 | /* SPI support */ |
225 | void __init txx9_spi_init(int busid, unsigned long base, int irq) | |
226 | { | |
227 | struct resource res[] = { | |
228 | { | |
229 | .start = base, | |
230 | .end = base + 0x20 - 1, | |
231 | .flags = IORESOURCE_MEM, | |
232 | }, { | |
233 | .start = irq, | |
234 | .flags = IORESOURCE_IRQ, | |
235 | }, | |
236 | }; | |
237 | platform_device_register_simple("spi_txx9", busid, | |
238 | res, ARRAY_SIZE(res)); | |
239 | } | |
240 | ||
241 | void __init txx9_ethaddr_init(unsigned int id, unsigned char *ethaddr) | |
242 | { | |
243 | struct platform_device *pdev = | |
244 | platform_device_alloc("tc35815-mac", id); | |
245 | if (!pdev || | |
246 | platform_device_add_data(pdev, ethaddr, 6) || | |
247 | platform_device_add(pdev)) | |
248 | platform_device_put(pdev); | |
249 | } | |
250 | ||
7779a5e0 AN |
251 | void __init txx9_sio_init(unsigned long baseaddr, int irq, |
252 | unsigned int line, unsigned int sclk, int nocts) | |
253 | { | |
254 | #ifdef CONFIG_SERIAL_TXX9 | |
255 | struct uart_port req; | |
256 | ||
257 | memset(&req, 0, sizeof(req)); | |
258 | req.line = line; | |
259 | req.iotype = UPIO_MEM; | |
260 | req.membase = ioremap(baseaddr, 0x24); | |
261 | req.mapbase = baseaddr; | |
262 | req.irq = irq; | |
263 | if (!nocts) | |
264 | req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/; | |
265 | if (sclk) { | |
266 | req.flags |= UPF_MAGIC_MULTIPLIER /*USE_SCLK*/; | |
267 | req.uartclk = sclk; | |
268 | } else | |
269 | req.uartclk = TXX9_IMCLK; | |
270 | early_serial_txx9_setup(&req); | |
271 | #endif /* CONFIG_SERIAL_TXX9 */ | |
272 | } | |
273 | ||
e352953c AN |
274 | #ifdef CONFIG_EARLY_PRINTK |
275 | static void __init null_prom_putchar(char c) | |
276 | { | |
277 | } | |
278 | void (*txx9_prom_putchar)(char c) __initdata = null_prom_putchar; | |
279 | ||
280 | void __init prom_putchar(char c) | |
281 | { | |
282 | txx9_prom_putchar(c); | |
283 | } | |
284 | ||
285 | static void __iomem *early_txx9_sio_port; | |
286 | ||
287 | static void __init early_txx9_sio_putchar(char c) | |
288 | { | |
289 | #define TXX9_SICISR 0x0c | |
290 | #define TXX9_SITFIFO 0x1c | |
291 | #define TXX9_SICISR_TXALS 0x00000002 | |
292 | while (!(__raw_readl(early_txx9_sio_port + TXX9_SICISR) & | |
293 | TXX9_SICISR_TXALS)) | |
294 | ; | |
295 | __raw_writel(c, early_txx9_sio_port + TXX9_SITFIFO); | |
296 | } | |
297 | ||
298 | void __init txx9_sio_putchar_init(unsigned long baseaddr) | |
299 | { | |
300 | early_txx9_sio_port = ioremap(baseaddr, 0x24); | |
301 | txx9_prom_putchar = early_txx9_sio_putchar; | |
302 | } | |
303 | #endif /* CONFIG_EARLY_PRINTK */ | |
304 | ||
edcaf1a6 AN |
305 | /* wrappers */ |
306 | void __init plat_mem_setup(void) | |
307 | { | |
94a4c329 AN |
308 | ioport_resource.start = 0; |
309 | ioport_resource.end = ~0UL; /* no limit */ | |
310 | iomem_resource.start = 0; | |
311 | iomem_resource.end = ~0UL; /* no limit */ | |
a49297e8 AN |
312 | |
313 | /* fallback restart/halt routines */ | |
314 | _machine_restart = (void (*)(char *))txx9_machine_halt; | |
315 | _machine_halt = txx9_machine_halt; | |
316 | pm_power_off = txx9_machine_halt; | |
317 | ||
07517529 AN |
318 | #ifdef CONFIG_PCI |
319 | pcibios_plat_setup = txx9_pcibios_setup; | |
320 | #endif | |
edcaf1a6 AN |
321 | txx9_board_vec->mem_setup(); |
322 | } | |
323 | ||
324 | void __init arch_init_irq(void) | |
325 | { | |
326 | txx9_board_vec->irq_setup(); | |
327 | } | |
328 | ||
329 | void __init plat_time_init(void) | |
330 | { | |
331 | txx9_board_vec->time_init(); | |
332 | } | |
333 | ||
334 | static int __init _txx9_arch_init(void) | |
335 | { | |
336 | if (txx9_board_vec->arch_init) | |
337 | txx9_board_vec->arch_init(); | |
338 | return 0; | |
339 | } | |
340 | arch_initcall(_txx9_arch_init); | |
341 | ||
342 | static int __init _txx9_device_init(void) | |
343 | { | |
344 | if (txx9_board_vec->device_init) | |
345 | txx9_board_vec->device_init(); | |
346 | return 0; | |
347 | } | |
348 | device_initcall(_txx9_device_init); | |
349 | ||
350 | int (*txx9_irq_dispatch)(int pending); | |
351 | asmlinkage void plat_irq_dispatch(void) | |
352 | { | |
353 | int pending = read_c0_status() & read_c0_cause() & ST0_IM; | |
354 | int irq = txx9_irq_dispatch(pending); | |
355 | ||
356 | if (likely(irq >= 0)) | |
357 | do_IRQ(irq); | |
358 | else | |
359 | spurious_interrupt(); | |
360 | } | |
4c642f3f AN |
361 | |
362 | /* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */ | |
363 | #ifdef NEEDS_TXX9_SWIZZLE_ADDR_B | |
364 | static unsigned long __swizzle_addr_none(unsigned long port) | |
365 | { | |
366 | return port; | |
367 | } | |
368 | unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none; | |
369 | EXPORT_SYMBOL(__swizzle_addr_b); | |
370 | #endif |