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 struct txx9_board_vec *txx9_board_vec __initdata;
103 static char txx9_system_type[32];
105 void __init prom_init_cmdline(void)
107 int argc = (int)fw_arg0;
108 char **argv = (char **)fw_arg1;
109 int i; /* Always ignore the "-c" at argv[0] */
111 /* ignore all built-in args if any f/w args given */
113 *arcs_cmdline = '\0';
115 for (i = 1; i < argc; i++) {
117 strcat(arcs_cmdline, " ");
118 strcat(arcs_cmdline, argv[i]);
122 void __init prom_init(void)
124 #ifdef CONFIG_CPU_TX39XX
125 txx9_board_vec = &jmr3927_vec;
127 #ifdef CONFIG_CPU_TX49XX
128 switch (TX4938_REV_PCODE()) {
130 txx9_board_vec = &rbtx4927_vec;
133 txx9_board_vec = &rbtx4937_vec;
136 txx9_board_vec = &rbtx4938_vec;
141 strcpy(txx9_system_type, txx9_board_vec->system);
143 txx9_board_vec->prom_init();
146 void __init prom_free_prom_memory(void)
150 const char *get_system_type(void)
152 return txx9_system_type;
155 char * __init prom_getcmdline(void)
157 return &(arcs_cmdline[0]);
161 void __init plat_mem_setup(void)
163 txx9_board_vec->mem_setup();
166 void __init arch_init_irq(void)
168 txx9_board_vec->irq_setup();
171 void __init plat_time_init(void)
173 txx9_board_vec->time_init();
176 static int __init _txx9_arch_init(void)
178 if (txx9_board_vec->arch_init)
179 txx9_board_vec->arch_init();
182 arch_initcall(_txx9_arch_init);
184 static int __init _txx9_device_init(void)
186 if (txx9_board_vec->device_init)
187 txx9_board_vec->device_init();
190 device_initcall(_txx9_device_init);
192 int (*txx9_irq_dispatch)(int pending);
193 asmlinkage void plat_irq_dispatch(void)
195 int pending = read_c0_status() & read_c0_cause() & ST0_IM;
196 int irq = txx9_irq_dispatch(pending);
198 if (likely(irq >= 0))
201 spurious_interrupt();
204 /* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */
205 #ifdef NEEDS_TXX9_SWIZZLE_ADDR_B
206 static unsigned long __swizzle_addr_none(unsigned long port)
210 unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none;
211 EXPORT_SYMBOL(__swizzle_addr_b);