2 * Generic setup routines for Broadcom MIPS boards
4 * Copyright (C) 2005 Felix Fietkau <nbd@openwrt.org>
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.
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.
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.
27 * Copyright 2005, Broadcom Corporation
28 * All Rights Reserved.
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.
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>
46 #include <asm/reboot.h>
52 #include <sbhndmips.h>
56 /* Virtual IRQ base, after last hw IRQ */
57 #define SBMIPS_VIRTIRQ_BASE 6
59 /* # IRQs, hw and sw IRQs */
60 #define SBMIPS_NUMIRQS 8
62 /* Global SB handle */
63 sb_t *bcm947xx_sbh = NULL;
64 spinlock_t bcm947xx_sbh_lock = SPIN_LOCK_UNLOCKED;
67 #define sbh bcm947xx_sbh
68 #define sbh_lock bcm947xx_sbh_lock
70 extern void bcm947xx_time_init(void);
71 extern void bcm947xx_timer_setup(struct irqaction *irq);
73 #ifdef CONFIG_REMOTE_DEBUG
74 extern void set_debug_traps(void);
75 extern void rs_kgdb_hook(struct serial_state *);
76 extern void breakpoint(void);
79 #if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
80 extern struct ide_ops std_ide_ops;
83 /* Kernel command line */
84 char arcs_cmdline[CL_SIZE] __initdata = CONFIG_CMDLINE;
85 extern void sb_serial_init(sb_t *sbh, void (*add)(void *regs, uint irq, uint baud_base, uint reg_shift));
88 bcm947xx_machine_restart(char *command)
90 printk("Please stand by while rebooting the system...\n");
92 /* Set the watchdog timer to reset immediately */
99 bcm947xx_machine_halt(void)
101 printk("System halted\n");
103 /* Disable interrupts and watchdog and spin forever */
111 static int ser_line = 0;
120 static serial_port ports[4];
121 static int num_ports = 0;
124 serial_add(void *regs, uint irq, uint baud_base, uint reg_shift)
126 ports[num_ports].regs = regs;
127 ports[num_ports].irq = irq;
128 ports[num_ports].baud_base = baud_base;
129 ports[num_ports].reg_shift = reg_shift;
134 do_serial_add(serial_port *port)
140 struct serial_struct s;
144 baud_base = port->baud_base;
145 reg_shift = port->reg_shift;
147 memset(&s, 0, sizeof(s));
152 s.baud_base = baud_base / 16;
153 s.flags = ASYNC_BOOT_AUTOCONF;
154 s.io_type = SERIAL_IO_MEM;
155 s.iomem_reg_shift = reg_shift;
157 if (early_serial_setup(&s) != 0) {
158 printk(KERN_ERR "Serial setup failed!\n");
162 #endif /* CONFIG_SERIAL */
171 /* Get global SB handle */
172 sbh = sb_kattach(SB_OSH);
174 /* Initialize clocks and interrupts */
175 sb_mips_init(sbh, SBMIPS_VIRTIRQ_BASE);
177 if (BCM330X(current_cpu_data.processor_id) &&
178 (read_c0_diag() & BRCM_PFC_AVAIL)) {
180 * Now that the sbh is inited set the proper PFC value
182 printk("Setting the PFC to its default value\n");
183 enable_pfc(PFC_AUTO);
188 sb_serial_init(sbh, serial_add);
190 /* reverse serial ports if nvram variable starts with console=ttyS1 */
191 /* Initialize UARTs */
192 s = nvram_get("kernel_args");
194 if (!strncmp(s, "console=ttyS1", 13)) {
195 for (i = num_ports; i; i--)
196 do_serial_add(&ports[i - 1]);
198 for (i = 0; i < num_ports; i++)
199 do_serial_add(&ports[i]);
203 #if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
204 ide_ops = &std_ide_ops;
207 /* Override default command line arguments */
208 value = nvram_get("kernel_cmdline");
209 if (value && strlen(value) && strncmp(value, "empty", 5))
210 strncpy(arcs_cmdline, value, sizeof(arcs_cmdline));
214 _machine_restart = bcm947xx_machine_restart;
215 _machine_halt = bcm947xx_machine_halt;
216 _machine_power_off = bcm947xx_machine_halt;
218 board_time_init = bcm947xx_time_init;
219 board_timer_setup = bcm947xx_timer_setup;
223 get_system_type(void)
228 sprintf(s, "Broadcom BCM%X chip rev %d", sb_chip(bcm947xx_sbh),
229 sb_chiprev(bcm947xx_sbh));
233 return "Broadcom BCM947XX";