Commit | Line | Data |
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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> |
edcaf1a6 | 24 | #include <asm/bootinfo.h> |
e0eb7307 | 25 | #include <asm/time.h> |
a49297e8 | 26 | #include <asm/reboot.h> |
89d63fe1 | 27 | #include <asm/txx9/generic.h> |
07517529 | 28 | #include <asm/txx9/pci.h> |
edcaf1a6 AN |
29 | #ifdef CONFIG_CPU_TX49XX |
30 | #include <asm/txx9/tx4938.h> | |
31 | #endif | |
89d63fe1 AN |
32 | |
33 | /* EBUSC settings of TX4927, etc. */ | |
34 | struct resource txx9_ce_res[8]; | |
35 | static char txx9_ce_res_name[8][4]; /* "CEn" */ | |
36 | ||
37 | /* pcode, internal register */ | |
94a4c329 | 38 | unsigned int txx9_pcode; |
89d63fe1 AN |
39 | char txx9_pcode_str[8]; |
40 | static struct resource txx9_reg_res = { | |
41 | .name = txx9_pcode_str, | |
42 | .flags = IORESOURCE_MEM, | |
43 | }; | |
44 | void __init | |
45 | txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size) | |
46 | { | |
47 | int i; | |
48 | ||
49 | for (i = 0; i < ARRAY_SIZE(txx9_ce_res); i++) { | |
50 | sprintf(txx9_ce_res_name[i], "CE%d", i); | |
51 | txx9_ce_res[i].flags = IORESOURCE_MEM; | |
52 | txx9_ce_res[i].name = txx9_ce_res_name[i]; | |
53 | } | |
54 | ||
55 | sprintf(txx9_pcode_str, "TX%x", pcode); | |
56 | if (base) { | |
57 | txx9_reg_res.start = base & 0xfffffffffULL; | |
58 | txx9_reg_res.end = (base & 0xfffffffffULL) + (size - 1); | |
59 | request_resource(&iomem_resource, &txx9_reg_res); | |
60 | } | |
61 | } | |
62 | ||
63 | /* clocks */ | |
64 | unsigned int txx9_master_clock; | |
65 | unsigned int txx9_cpu_clock; | |
66 | unsigned int txx9_gbus_clock; | |
edcaf1a6 | 67 | |
94a4c329 | 68 | int txx9_ccfg_toeon __initdata = 1; |
edcaf1a6 AN |
69 | |
70 | /* Minimum CLK support */ | |
71 | ||
72 | struct clk *clk_get(struct device *dev, const char *id) | |
73 | { | |
74 | if (!strcmp(id, "spi-baseclk")) | |
94a4c329 | 75 | return (struct clk *)((unsigned long)txx9_gbus_clock / 2 / 4); |
edcaf1a6 | 76 | if (!strcmp(id, "imbus_clk")) |
94a4c329 | 77 | return (struct clk *)((unsigned long)txx9_gbus_clock / 2); |
edcaf1a6 AN |
78 | return ERR_PTR(-ENOENT); |
79 | } | |
80 | EXPORT_SYMBOL(clk_get); | |
81 | ||
82 | int clk_enable(struct clk *clk) | |
83 | { | |
84 | return 0; | |
85 | } | |
86 | EXPORT_SYMBOL(clk_enable); | |
87 | ||
88 | void clk_disable(struct clk *clk) | |
89 | { | |
90 | } | |
91 | EXPORT_SYMBOL(clk_disable); | |
92 | ||
93 | unsigned long clk_get_rate(struct clk *clk) | |
94 | { | |
95 | return (unsigned long)clk; | |
96 | } | |
97 | EXPORT_SYMBOL(clk_get_rate); | |
98 | ||
99 | void clk_put(struct clk *clk) | |
100 | { | |
101 | } | |
102 | EXPORT_SYMBOL(clk_put); | |
103 | ||
8d795f2a AN |
104 | /* GPIO support */ |
105 | ||
106 | #ifdef CONFIG_GENERIC_GPIO | |
107 | int gpio_to_irq(unsigned gpio) | |
108 | { | |
109 | return -EINVAL; | |
110 | } | |
111 | EXPORT_SYMBOL(gpio_to_irq); | |
112 | ||
113 | int irq_to_gpio(unsigned irq) | |
114 | { | |
115 | return -EINVAL; | |
116 | } | |
117 | EXPORT_SYMBOL(irq_to_gpio); | |
118 | #endif | |
119 | ||
edcaf1a6 AN |
120 | extern struct txx9_board_vec jmr3927_vec; |
121 | extern struct txx9_board_vec rbtx4927_vec; | |
122 | extern struct txx9_board_vec rbtx4937_vec; | |
123 | extern struct txx9_board_vec rbtx4938_vec; | |
124 | ||
edcaf1a6 AN |
125 | struct txx9_board_vec *txx9_board_vec __initdata; |
126 | static char txx9_system_type[32]; | |
127 | ||
128 | void __init prom_init_cmdline(void) | |
129 | { | |
130 | int argc = (int)fw_arg0; | |
131 | char **argv = (char **)fw_arg1; | |
132 | int i; /* Always ignore the "-c" at argv[0] */ | |
94a4c329 AN |
133 | #ifdef CONFIG_64BIT |
134 | char *fixed_argv[32]; | |
135 | for (i = 0; i < argc; i++) | |
136 | fixed_argv[i] = (char *)(long)(*((__s32 *)argv + i)); | |
137 | argv = fixed_argv; | |
138 | #endif | |
edcaf1a6 AN |
139 | |
140 | /* ignore all built-in args if any f/w args given */ | |
141 | if (argc > 1) | |
142 | *arcs_cmdline = '\0'; | |
143 | ||
144 | for (i = 1; i < argc; i++) { | |
145 | if (i != 1) | |
146 | strcat(arcs_cmdline, " "); | |
147 | strcat(arcs_cmdline, argv[i]); | |
148 | } | |
149 | } | |
150 | ||
151 | void __init prom_init(void) | |
152 | { | |
edcaf1a6 | 153 | #ifdef CONFIG_CPU_TX39XX |
7a1fdf19 | 154 | txx9_board_vec = &jmr3927_vec; |
edcaf1a6 AN |
155 | #endif |
156 | #ifdef CONFIG_CPU_TX49XX | |
157 | switch (TX4938_REV_PCODE()) { | |
8d795f2a | 158 | #ifdef CONFIG_TOSHIBA_RBTX4927 |
edcaf1a6 | 159 | case 0x4927: |
7a1fdf19 | 160 | txx9_board_vec = &rbtx4927_vec; |
edcaf1a6 AN |
161 | break; |
162 | case 0x4937: | |
7a1fdf19 | 163 | txx9_board_vec = &rbtx4937_vec; |
edcaf1a6 | 164 | break; |
8d795f2a AN |
165 | #endif |
166 | #ifdef CONFIG_TOSHIBA_RBTX4938 | |
edcaf1a6 | 167 | case 0x4938: |
7a1fdf19 | 168 | txx9_board_vec = &rbtx4938_vec; |
edcaf1a6 | 169 | break; |
8d795f2a | 170 | #endif |
edcaf1a6 AN |
171 | } |
172 | #endif | |
7a1fdf19 YY |
173 | |
174 | strcpy(txx9_system_type, txx9_board_vec->system); | |
175 | ||
7b226094 | 176 | txx9_board_vec->prom_init(); |
edcaf1a6 AN |
177 | } |
178 | ||
179 | void __init prom_free_prom_memory(void) | |
180 | { | |
181 | } | |
182 | ||
183 | const char *get_system_type(void) | |
184 | { | |
185 | return txx9_system_type; | |
186 | } | |
187 | ||
188 | char * __init prom_getcmdline(void) | |
189 | { | |
190 | return &(arcs_cmdline[0]); | |
191 | } | |
192 | ||
a49297e8 AN |
193 | static void __noreturn txx9_machine_halt(void) |
194 | { | |
195 | local_irq_disable(); | |
196 | clear_c0_status(ST0_IM); | |
197 | while (1) { | |
198 | if (cpu_wait) { | |
199 | (*cpu_wait)(); | |
200 | if (cpu_has_counter) { | |
201 | /* | |
202 | * Clear counter interrupt while it | |
203 | * breaks WAIT instruction even if | |
204 | * masked. | |
205 | */ | |
206 | write_c0_compare(0); | |
207 | } | |
208 | } | |
209 | } | |
210 | } | |
211 | ||
68314725 AN |
212 | /* Watchdog support */ |
213 | void __init txx9_wdt_init(unsigned long base) | |
214 | { | |
215 | struct resource res = { | |
216 | .start = base, | |
217 | .end = base + 0x100 - 1, | |
218 | .flags = IORESOURCE_MEM, | |
219 | }; | |
220 | platform_device_register_simple("txx9wdt", -1, &res, 1); | |
221 | } | |
222 | ||
edcaf1a6 AN |
223 | /* wrappers */ |
224 | void __init plat_mem_setup(void) | |
225 | { | |
94a4c329 AN |
226 | ioport_resource.start = 0; |
227 | ioport_resource.end = ~0UL; /* no limit */ | |
228 | iomem_resource.start = 0; | |
229 | iomem_resource.end = ~0UL; /* no limit */ | |
a49297e8 AN |
230 | |
231 | /* fallback restart/halt routines */ | |
232 | _machine_restart = (void (*)(char *))txx9_machine_halt; | |
233 | _machine_halt = txx9_machine_halt; | |
234 | pm_power_off = txx9_machine_halt; | |
235 | ||
07517529 AN |
236 | #ifdef CONFIG_PCI |
237 | pcibios_plat_setup = txx9_pcibios_setup; | |
238 | #endif | |
edcaf1a6 AN |
239 | txx9_board_vec->mem_setup(); |
240 | } | |
241 | ||
242 | void __init arch_init_irq(void) | |
243 | { | |
244 | txx9_board_vec->irq_setup(); | |
245 | } | |
246 | ||
247 | void __init plat_time_init(void) | |
248 | { | |
249 | txx9_board_vec->time_init(); | |
250 | } | |
251 | ||
252 | static int __init _txx9_arch_init(void) | |
253 | { | |
254 | if (txx9_board_vec->arch_init) | |
255 | txx9_board_vec->arch_init(); | |
256 | return 0; | |
257 | } | |
258 | arch_initcall(_txx9_arch_init); | |
259 | ||
260 | static int __init _txx9_device_init(void) | |
261 | { | |
262 | if (txx9_board_vec->device_init) | |
263 | txx9_board_vec->device_init(); | |
264 | return 0; | |
265 | } | |
266 | device_initcall(_txx9_device_init); | |
267 | ||
268 | int (*txx9_irq_dispatch)(int pending); | |
269 | asmlinkage void plat_irq_dispatch(void) | |
270 | { | |
271 | int pending = read_c0_status() & read_c0_cause() & ST0_IM; | |
272 | int irq = txx9_irq_dispatch(pending); | |
273 | ||
274 | if (likely(irq >= 0)) | |
275 | do_IRQ(irq); | |
276 | else | |
277 | spurious_interrupt(); | |
278 | } | |
4c642f3f AN |
279 | |
280 | /* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */ | |
281 | #ifdef NEEDS_TXX9_SWIZZLE_ADDR_B | |
282 | static unsigned long __swizzle_addr_none(unsigned long port) | |
283 | { | |
284 | return port; | |
285 | } | |
286 | unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none; | |
287 | EXPORT_SYMBOL(__swizzle_addr_b); | |
288 | #endif |