fonera-mp3: fix json-c dependency here as well
[openwrt.git] / target / linux / brcm-2.4 / files / arch / mips / bcm947xx / setup.c
1 /*
2 * Generic setup routines for Broadcom MIPS boards
3 *
4 * Copyright (C) 2005 Felix Fietkau <nbd@openwrt.org>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
10 *
11 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
12 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
14 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
15 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
16 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
17 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
18 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
19 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
20 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
21 *
22 * You should have received a copy of the GNU General Public License along
23 * with this program; if not, write to the Free Software Foundation, Inc.,
24 * 675 Mass Ave, Cambridge, MA 02139, USA.
25 *
26 *
27 * Copyright 2005, Broadcom Corporation
28 * All Rights Reserved.
29 *
30 * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
31 * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
32 * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
33 * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
34 *
35 */
36
37 #include <linux/config.h>
38 #include <linux/init.h>
39 #include <linux/kernel.h>
40 #include <linux/module.h>
41 #include <linux/serialP.h>
42 #include <linux/ide.h>
43 #include <asm/bootinfo.h>
44 #include <asm/cpu.h>
45 #include <asm/time.h>
46 #include <asm/reboot.h>
47
48 #include <typedefs.h>
49 #include <osl.h>
50 #include <sbutils.h>
51 #include <bcmutils.h>
52 #include <bcmnvram.h>
53 #include <sbhndmips.h>
54 #include <hndmips.h>
55 #include <trxhdr.h>
56
57 /* Virtual IRQ base, after last hw IRQ */
58 #define SBMIPS_VIRTIRQ_BASE 6
59
60 /* # IRQs, hw and sw IRQs */
61 #define SBMIPS_NUMIRQS 8
62
63 /* Global SB handle */
64 sb_t *bcm947xx_sbh = NULL;
65 spinlock_t bcm947xx_sbh_lock = SPIN_LOCK_UNLOCKED;
66
67 /* Convenience */
68 #define sbh bcm947xx_sbh
69 #define sbh_lock bcm947xx_sbh_lock
70
71 extern void bcm947xx_time_init(void);
72 extern void bcm947xx_timer_setup(struct irqaction *irq);
73
74 #ifdef CONFIG_REMOTE_DEBUG
75 extern void set_debug_traps(void);
76 extern void rs_kgdb_hook(struct serial_state *);
77 extern void breakpoint(void);
78 #endif
79
80 #if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
81 extern struct ide_ops std_ide_ops;
82 #endif
83
84 /* Kernel command line */
85 char arcs_cmdline[CL_SIZE] __initdata = CONFIG_CMDLINE;
86 extern void sb_serial_init(sb_t *sbh, void (*add)(void *regs, uint irq, uint baud_base, uint reg_shift));
87
88 void
89 bcm947xx_machine_restart(char *command)
90 {
91 printk("Please stand by while rebooting the system...\n");
92
93 /* Set the watchdog timer to reset immediately */
94 __cli();
95 sb_watchdog(sbh, 1);
96 while (1);
97 }
98
99 void
100 bcm947xx_machine_halt(void)
101 {
102 printk("System halted\n");
103
104 /* Disable interrupts and watchdog and spin forever */
105 __cli();
106 sb_watchdog(sbh, 0);
107 while (1);
108 }
109
110 #ifdef CONFIG_SERIAL
111
112 static int ser_line = 0;
113
114 typedef struct {
115 void *regs;
116 uint irq;
117 uint baud_base;
118 uint reg_shift;
119 } serial_port;
120
121 static serial_port ports[4];
122 static int num_ports = 0;
123
124 static void
125 serial_add(void *regs, uint irq, uint baud_base, uint reg_shift)
126 {
127 ports[num_ports].regs = regs;
128 ports[num_ports].irq = irq;
129 ports[num_ports].baud_base = baud_base;
130 ports[num_ports].reg_shift = reg_shift;
131 num_ports++;
132 }
133
134 static void
135 do_serial_add(serial_port *port)
136 {
137 void *regs;
138 uint irq;
139 uint baud_base;
140 uint reg_shift;
141 struct serial_struct s;
142
143 regs = port->regs;
144 irq = port->irq;
145 baud_base = port->baud_base;
146 reg_shift = port->reg_shift;
147
148 memset(&s, 0, sizeof(s));
149
150 s.line = ser_line++;
151 s.iomem_base = regs;
152 s.irq = irq + 2;
153 s.baud_base = baud_base / 16;
154 s.flags = ASYNC_BOOT_AUTOCONF;
155 s.io_type = SERIAL_IO_MEM;
156 s.iomem_reg_shift = reg_shift;
157
158 if (early_serial_setup(&s) != 0) {
159 printk(KERN_ERR "Serial setup failed!\n");
160 }
161 }
162
163 #endif /* CONFIG_SERIAL */
164
165 void __init
166 brcm_setup(void)
167 {
168 char *s;
169 int i;
170 char *value;
171
172 /* Get global SB handle */
173 sbh = sb_kattach();
174
175 /* Initialize clocks and interrupts */
176 sb_mips_init(sbh, SBMIPS_VIRTIRQ_BASE);
177
178 if (BCM330X(current_cpu_data.processor_id) &&
179 (read_c0_diag() & BRCM_PFC_AVAIL)) {
180 /*
181 * Now that the sbh is inited set the proper PFC value
182 */
183 printk("Setting the PFC to its default value\n");
184 enable_pfc(PFC_AUTO);
185 }
186
187
188 #ifdef CONFIG_SERIAL
189 sb_serial_init(sbh, serial_add);
190
191 /* reverse serial ports if nvram variable starts with console=ttyS1 */
192 /* Initialize UARTs */
193 s = nvram_get("kernel_args");
194 if (!s) s = "";
195 if (!strncmp(s, "console=ttyS1", 13)) {
196 for (i = num_ports; i; i--)
197 do_serial_add(&ports[i - 1]);
198 } else {
199 for (i = 0; i < num_ports; i++)
200 do_serial_add(&ports[i]);
201 }
202 #endif
203
204 #if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
205 ide_ops = &std_ide_ops;
206 #endif
207
208 /* Override default command line arguments */
209 value = nvram_get("kernel_cmdline");
210 if (value && strlen(value) && strncmp(value, "empty", 5))
211 strncpy(arcs_cmdline, value, sizeof(arcs_cmdline));
212
213
214 /* Generic setup */
215 _machine_restart = bcm947xx_machine_restart;
216 _machine_halt = bcm947xx_machine_halt;
217 _machine_power_off = bcm947xx_machine_halt;
218
219 board_time_init = bcm947xx_time_init;
220 board_timer_setup = bcm947xx_timer_setup;
221 }
222
223 const char *
224 get_system_type(void)
225 {
226 static char s[32];
227
228 if (bcm947xx_sbh) {
229 sprintf(s, "Broadcom BCM%X chip rev %d", sb_chip(bcm947xx_sbh),
230 sb_chiprev(bcm947xx_sbh));
231 return s;
232 }
233 else
234 return "Broadcom BCM947XX";
235 }
236
237 void __init
238 bus_error_init(void)
239 {
240 }
241
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