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 <asm/bootinfo.h>
23 #include <asm/txx9/generic.h>
24 #ifdef CONFIG_CPU_TX49XX
25 #include <asm/txx9/tx4938.h>
28 /* EBUSC settings of TX4927, etc. */
29 struct resource txx9_ce_res[8];
30 static char txx9_ce_res_name[8][4]; /* "CEn" */
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,
39 txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size)
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];
49 sprintf(txx9_pcode_str, "TX%x", pcode);
51 txx9_reg_res.start = base & 0xfffffffffULL;
52 txx9_reg_res.end = (base & 0xfffffffffULL) + (size - 1);
53 request_resource(&iomem_resource, &txx9_reg_res);
58 unsigned int txx9_master_clock;
59 unsigned int txx9_cpu_clock;
60 unsigned int txx9_gbus_clock;
63 /* Minimum CLK support */
65 struct clk *clk_get(struct device *dev, const char *id)
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);
73 EXPORT_SYMBOL(clk_get);
75 int clk_enable(struct clk *clk)
79 EXPORT_SYMBOL(clk_enable);
81 void clk_disable(struct clk *clk)
84 EXPORT_SYMBOL(clk_disable);
86 unsigned long clk_get_rate(struct clk *clk)
88 return (unsigned long)clk;
90 EXPORT_SYMBOL(clk_get_rate);
92 void clk_put(struct clk *clk)
95 EXPORT_SYMBOL(clk_put);
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;
102 /* board definitions */
103 static struct txx9_board_vec *board_vecs[] __initdata = {
104 #ifdef CONFIG_TOSHIBA_JMR3927
107 #ifdef CONFIG_TOSHIBA_RBTX4927
111 #ifdef CONFIG_TOSHIBA_RBTX4938
115 struct txx9_board_vec *txx9_board_vec __initdata;
116 static char txx9_system_type[32];
118 void __init prom_init_cmdline(void)
120 int argc = (int)fw_arg0;
121 char **argv = (char **)fw_arg1;
122 int i; /* Always ignore the "-c" at argv[0] */
124 /* ignore all built-in args if any f/w args given */
126 *arcs_cmdline = '\0';
128 for (i = 1; i < argc; i++) {
130 strcat(arcs_cmdline, " ");
131 strcat(arcs_cmdline, argv[i]);
135 void __init prom_init(void)
139 #ifdef CONFIG_CPU_TX39XX
140 mips_machtype = MACH_TOSHIBA_JMR3927;
142 #ifdef CONFIG_CPU_TX49XX
143 switch (TX4938_REV_PCODE()) {
145 mips_machtype = MACH_TOSHIBA_RBTX4927;
148 mips_machtype = MACH_TOSHIBA_RBTX4937;
151 mips_machtype = MACH_TOSHIBA_RBTX4938;
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();
164 void __init prom_free_prom_memory(void)
168 const char *get_system_type(void)
170 return txx9_system_type;
173 char * __init prom_getcmdline(void)
175 return &(arcs_cmdline[0]);
179 void __init plat_mem_setup(void)
181 txx9_board_vec->mem_setup();
184 void __init arch_init_irq(void)
186 txx9_board_vec->irq_setup();
189 void __init plat_time_init(void)
191 txx9_board_vec->time_init();
194 static int __init _txx9_arch_init(void)
196 if (txx9_board_vec->arch_init)
197 txx9_board_vec->arch_init();
200 arch_initcall(_txx9_arch_init);
202 static int __init _txx9_device_init(void)
204 if (txx9_board_vec->device_init)
205 txx9_board_vec->device_init();
208 device_initcall(_txx9_device_init);
210 int (*txx9_irq_dispatch)(int pending);
211 asmlinkage void plat_irq_dispatch(void)
213 int pending = read_c0_status() & read_c0_cause() & ST0_IM;
214 int irq = txx9_irq_dispatch(pending);
216 if (likely(irq >= 0))
219 spurious_interrupt();