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/*
* Generic setup routines for Broadcom MIPS boards
*
* Copyright (C) 2005 Felix Fietkau <nbd@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
* Copyright 2005, Broadcom Corporation
* All Rights Reserved.
*
* THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
* KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
* SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
*
*/
#include <linux/config.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/serialP.h>
#include <linux/ide.h>
#include <asm/bootinfo.h>
#include <asm/cpu.h>
#include <asm/time.h>
#include <asm/reboot.h>
#include <typedefs.h>
#include <osl.h>
#include <sbutils.h>
#include <bcmnvram.h>
#include <bcmdevs.h>
#include <sbhndmips.h>
#include <hndmips.h>
#include <trxhdr.h>
/* Virtual IRQ base, after last hw IRQ */
#define SBMIPS_VIRTIRQ_BASE 6
/* # IRQs, hw and sw IRQs */
#define SBMIPS_NUMIRQS 8
/* Global SB handle */
sb_t *bcm947xx_sbh = NULL;
spinlock_t bcm947xx_sbh_lock = SPIN_LOCK_UNLOCKED;
/* Convenience */
#define sbh bcm947xx_sbh
#define sbh_lock bcm947xx_sbh_lock
extern void bcm947xx_time_init(void);
extern void bcm947xx_timer_setup(struct irqaction *irq);
#ifdef CONFIG_REMOTE_DEBUG
extern void set_debug_traps(void);
extern void rs_kgdb_hook(struct serial_state *);
extern void breakpoint(void);
#endif
#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
extern struct ide_ops std_ide_ops;
#endif
/* Kernel command line */
char arcs_cmdline[CL_SIZE] __initdata = CONFIG_CMDLINE;
extern void sb_serial_init(sb_t *sbh, void (*add)(void *regs, uint irq, uint baud_base, uint reg_shift));
void
bcm947xx_machine_restart(char *command)
{
printk("Please stand by while rebooting the system...\n");
if (sb_chip(sbh) == BCM4785_CHIP_ID)
MTC0(C0_BROADCOM, 4, (1 << 22));
/* Set the watchdog timer to reset immediately */
__cli();
sb_watchdog(sbh, 1);
if (sb_chip(sbh) == BCM4785_CHIP_ID) {
__asm__ __volatile__(
".set\tmips3\n\t"
"sync\n\t"
"wait\n\t"
".set\tmips0");
}
while (1);
}
void
bcm947xx_machine_halt(void)
{
printk("System halted\n");
/* Disable interrupts and watchdog and spin forever */
__cli();
sb_watchdog(sbh, 0);
while (1);
}
#ifdef CONFIG_SERIAL
static int ser_line = 0;
typedef struct {
void *regs;
uint irq;
uint baud_base;
uint reg_shift;
} serial_port;
static serial_port ports[4];
static int num_ports = 0;
static void
serial_add(void *regs, uint irq, uint baud_base, uint reg_shift)
{
ports[num_ports].regs = regs;
ports[num_ports].irq = irq;
ports[num_ports].baud_base = baud_base;
ports[num_ports].reg_shift = reg_shift;
num_ports++;
}
static void
do_serial_add(serial_port *port)
{
void *regs;
uint irq;
uint baud_base;
uint reg_shift;
struct serial_struct s;
regs = port->regs;
irq = port->irq;
baud_base = port->baud_base;
reg_shift = port->reg_shift;
memset(&s, 0, sizeof(s));
s.line = ser_line++;
s.iomem_base = regs;
s.irq = irq + 2;
s.baud_base = baud_base / 16;
s.flags = ASYNC_BOOT_AUTOCONF;
s.io_type = SERIAL_IO_MEM;
s.iomem_reg_shift = reg_shift;
if (early_serial_setup(&s) != 0) {
printk(KERN_ERR "Serial setup failed!\n");
}
}
#endif /* CONFIG_SERIAL */
void __init
brcm_setup(void)
{
char *s;
int i;
char *value;
/* Get global SB handle */
sbh = sb_kattach(SB_OSH);
/* Initialize clocks and interrupts */
sb_mips_init(sbh, SBMIPS_VIRTIRQ_BASE);
if (BCM330X(current_cpu_data.processor_id) &&
(read_c0_diag() & BRCM_PFC_AVAIL)) {
/*
* Now that the sbh is inited set the proper PFC value
*/
printk("Setting the PFC to its default value\n");
enable_pfc(PFC_AUTO);
}
#ifdef CONFIG_SERIAL
sb_serial_init(sbh, serial_add);
/* reverse serial ports if nvram variable starts with console=ttyS1 */
/* Initialize UARTs */
s = nvram_get("kernel_args");
if (!s) s = "";
if (!strncmp(s, "console=ttyS1", 13)) {
for (i = num_ports; i; i--)
do_serial_add(&ports[i - 1]);
} else {
for (i = 0; i < num_ports; i++)
do_serial_add(&ports[i]);
}
#endif
#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
ide_ops = &std_ide_ops;
#endif
/* Override default command line arguments */
value = nvram_get("kernel_cmdline");
if (value && strlen(value) && strncmp(value, "empty", 5))
strncpy(arcs_cmdline, value, sizeof(arcs_cmdline));
/* Generic setup */
_machine_restart = bcm947xx_machine_restart;
_machine_halt = bcm947xx_machine_halt;
_machine_power_off = bcm947xx_machine_halt;
board_time_init = bcm947xx_time_init;
board_timer_setup = bcm947xx_timer_setup;
}
const char *
get_system_type(void)
{
static char s[32];
if (bcm947xx_sbh) {
sprintf(s, "Broadcom BCM%X chip rev %d", sb_chip(bcm947xx_sbh),
sb_chiprev(bcm947xx_sbh));
return s;
}
else
return "Broadcom BCM947XX";
}
void __init
bus_error_init(void)
{
}
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