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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> | |
22 | #include <asm/bootinfo.h> | |
89d63fe1 | 23 | #include <asm/txx9/generic.h> |
edcaf1a6 AN |
24 | #ifdef CONFIG_CPU_TX49XX |
25 | #include <asm/txx9/tx4938.h> | |
26 | #endif | |
89d63fe1 AN |
27 | |
28 | /* EBUSC settings of TX4927, etc. */ | |
29 | struct resource txx9_ce_res[8]; | |
30 | static char txx9_ce_res_name[8][4]; /* "CEn" */ | |
31 | ||
32 | /* pcode, internal register */ | |
33 | char txx9_pcode_str[8]; | |
34 | static struct resource txx9_reg_res = { | |
35 | .name = txx9_pcode_str, | |
36 | .flags = IORESOURCE_MEM, | |
37 | }; | |
38 | void __init | |
39 | txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size) | |
40 | { | |
41 | int i; | |
42 | ||
43 | for (i = 0; i < ARRAY_SIZE(txx9_ce_res); i++) { | |
44 | sprintf(txx9_ce_res_name[i], "CE%d", i); | |
45 | txx9_ce_res[i].flags = IORESOURCE_MEM; | |
46 | txx9_ce_res[i].name = txx9_ce_res_name[i]; | |
47 | } | |
48 | ||
49 | sprintf(txx9_pcode_str, "TX%x", pcode); | |
50 | if (base) { | |
51 | txx9_reg_res.start = base & 0xfffffffffULL; | |
52 | txx9_reg_res.end = (base & 0xfffffffffULL) + (size - 1); | |
53 | request_resource(&iomem_resource, &txx9_reg_res); | |
54 | } | |
55 | } | |
56 | ||
57 | /* clocks */ | |
58 | unsigned int txx9_master_clock; | |
59 | unsigned int txx9_cpu_clock; | |
60 | unsigned int txx9_gbus_clock; | |
edcaf1a6 AN |
61 | |
62 | ||
63 | /* Minimum CLK support */ | |
64 | ||
65 | struct clk *clk_get(struct device *dev, const char *id) | |
66 | { | |
67 | if (!strcmp(id, "spi-baseclk")) | |
68 | return (struct clk *)(txx9_gbus_clock / 2 / 4); | |
69 | if (!strcmp(id, "imbus_clk")) | |
70 | return (struct clk *)(txx9_gbus_clock / 2); | |
71 | return ERR_PTR(-ENOENT); | |
72 | } | |
73 | EXPORT_SYMBOL(clk_get); | |
74 | ||
75 | int clk_enable(struct clk *clk) | |
76 | { | |
77 | return 0; | |
78 | } | |
79 | EXPORT_SYMBOL(clk_enable); | |
80 | ||
81 | void clk_disable(struct clk *clk) | |
82 | { | |
83 | } | |
84 | EXPORT_SYMBOL(clk_disable); | |
85 | ||
86 | unsigned long clk_get_rate(struct clk *clk) | |
87 | { | |
88 | return (unsigned long)clk; | |
89 | } | |
90 | EXPORT_SYMBOL(clk_get_rate); | |
91 | ||
92 | void clk_put(struct clk *clk) | |
93 | { | |
94 | } | |
95 | EXPORT_SYMBOL(clk_put); | |
96 | ||
97 | extern struct txx9_board_vec jmr3927_vec; | |
98 | extern struct txx9_board_vec rbtx4927_vec; | |
99 | extern struct txx9_board_vec rbtx4937_vec; | |
100 | extern struct txx9_board_vec rbtx4938_vec; | |
101 | ||
102 | /* board definitions */ | |
103 | static struct txx9_board_vec *board_vecs[] __initdata = { | |
104 | #ifdef CONFIG_TOSHIBA_JMR3927 | |
105 | &jmr3927_vec, | |
106 | #endif | |
107 | #ifdef CONFIG_TOSHIBA_RBTX4927 | |
108 | &rbtx4927_vec, | |
109 | &rbtx4937_vec, | |
110 | #endif | |
111 | #ifdef CONFIG_TOSHIBA_RBTX4938 | |
112 | &rbtx4938_vec, | |
113 | #endif | |
114 | }; | |
115 | struct txx9_board_vec *txx9_board_vec __initdata; | |
116 | static char txx9_system_type[32]; | |
117 | ||
118 | void __init prom_init_cmdline(void) | |
119 | { | |
120 | int argc = (int)fw_arg0; | |
121 | char **argv = (char **)fw_arg1; | |
122 | int i; /* Always ignore the "-c" at argv[0] */ | |
123 | ||
124 | /* ignore all built-in args if any f/w args given */ | |
125 | if (argc > 1) | |
126 | *arcs_cmdline = '\0'; | |
127 | ||
128 | for (i = 1; i < argc; i++) { | |
129 | if (i != 1) | |
130 | strcat(arcs_cmdline, " "); | |
131 | strcat(arcs_cmdline, argv[i]); | |
132 | } | |
133 | } | |
134 | ||
135 | void __init prom_init(void) | |
136 | { | |
137 | int i; | |
138 | ||
139 | #ifdef CONFIG_CPU_TX39XX | |
140 | mips_machtype = MACH_TOSHIBA_JMR3927; | |
141 | #endif | |
142 | #ifdef CONFIG_CPU_TX49XX | |
143 | switch (TX4938_REV_PCODE()) { | |
144 | case 0x4927: | |
145 | mips_machtype = MACH_TOSHIBA_RBTX4927; | |
146 | break; | |
147 | case 0x4937: | |
148 | mips_machtype = MACH_TOSHIBA_RBTX4937; | |
149 | break; | |
150 | case 0x4938: | |
151 | mips_machtype = MACH_TOSHIBA_RBTX4938; | |
152 | break; | |
153 | } | |
154 | #endif | |
155 | for (i = 0; i < ARRAY_SIZE(board_vecs); i++) { | |
156 | if (board_vecs[i]->type == mips_machtype) { | |
157 | txx9_board_vec = board_vecs[i]; | |
158 | strcpy(txx9_system_type, txx9_board_vec->system); | |
159 | return txx9_board_vec->prom_init(); | |
160 | } | |
161 | } | |
162 | } | |
163 | ||
164 | void __init prom_free_prom_memory(void) | |
165 | { | |
166 | } | |
167 | ||
168 | const char *get_system_type(void) | |
169 | { | |
170 | return txx9_system_type; | |
171 | } | |
172 | ||
173 | char * __init prom_getcmdline(void) | |
174 | { | |
175 | return &(arcs_cmdline[0]); | |
176 | } | |
177 | ||
178 | /* wrappers */ | |
179 | void __init plat_mem_setup(void) | |
180 | { | |
181 | txx9_board_vec->mem_setup(); | |
182 | } | |
183 | ||
184 | void __init arch_init_irq(void) | |
185 | { | |
186 | txx9_board_vec->irq_setup(); | |
187 | } | |
188 | ||
189 | void __init plat_time_init(void) | |
190 | { | |
191 | txx9_board_vec->time_init(); | |
192 | } | |
193 | ||
194 | static int __init _txx9_arch_init(void) | |
195 | { | |
196 | if (txx9_board_vec->arch_init) | |
197 | txx9_board_vec->arch_init(); | |
198 | return 0; | |
199 | } | |
200 | arch_initcall(_txx9_arch_init); | |
201 | ||
202 | static int __init _txx9_device_init(void) | |
203 | { | |
204 | if (txx9_board_vec->device_init) | |
205 | txx9_board_vec->device_init(); | |
206 | return 0; | |
207 | } | |
208 | device_initcall(_txx9_device_init); | |
209 | ||
210 | int (*txx9_irq_dispatch)(int pending); | |
211 | asmlinkage void plat_irq_dispatch(void) | |
212 | { | |
213 | int pending = read_c0_status() & read_c0_cause() & ST0_IM; | |
214 | int irq = txx9_irq_dispatch(pending); | |
215 | ||
216 | if (likely(irq >= 0)) | |
217 | do_IRQ(irq); | |
218 | else | |
219 | spurious_interrupt(); | |
220 | } |