151 lines
3.1 KiB
C
151 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* arch/xtensa/platforms/xt2000/setup.c
|
|
*
|
|
* Platform specific functions for the XT2000 board.
|
|
*
|
|
* Authors: Chris Zankel <chris@zankel.net>
|
|
* Joe Taylor <joe@tensilica.com>
|
|
*
|
|
* Copyright 2001 - 2004 Tensilica Inc.
|
|
*/
|
|
#include <linux/stddef.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/reboot.h>
|
|
#include <linux/kdev_t.h>
|
|
#include <linux/types.h>
|
|
#include <linux/major.h>
|
|
#include <linux/console.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/stringify.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/serial.h>
|
|
#include <linux/serial_8250.h>
|
|
|
|
#include <asm/processor.h>
|
|
#include <asm/platform.h>
|
|
#include <asm/bootparam.h>
|
|
#include <platform/hardware.h>
|
|
#include <platform/serial.h>
|
|
|
|
/* Assumes s points to an 8-chr string. No checking for NULL. */
|
|
|
|
static void led_print (int f, char *s)
|
|
{
|
|
unsigned long* led_addr = (unsigned long*) (XT2000_LED_ADDR + 0xE0) + f;
|
|
int i;
|
|
for (i = f; i < 8; i++)
|
|
if ((*led_addr++ = *s++) == 0)
|
|
break;
|
|
}
|
|
|
|
void platform_halt(void)
|
|
{
|
|
led_print (0, " HALT ");
|
|
local_irq_disable();
|
|
while (1);
|
|
}
|
|
|
|
void platform_power_off(void)
|
|
{
|
|
led_print (0, "POWEROFF");
|
|
local_irq_disable();
|
|
while (1);
|
|
}
|
|
|
|
void platform_restart(void)
|
|
{
|
|
/* Flush and reset the mmu, simulate a processor reset, and
|
|
* jump to the reset vector. */
|
|
cpu_reset();
|
|
/* control never gets here */
|
|
}
|
|
|
|
void __init platform_setup(char** cmdline)
|
|
{
|
|
led_print (0, "LINUX ");
|
|
}
|
|
|
|
/* early initialization */
|
|
|
|
void __init platform_init(bp_tag_t *first)
|
|
{
|
|
}
|
|
|
|
/* Heartbeat. Let the LED blink. */
|
|
|
|
void platform_heartbeat(void)
|
|
{
|
|
static int i=0, t = 0;
|
|
|
|
if (--t < 0)
|
|
{
|
|
t = 59;
|
|
led_print(7, i ? ".": " ");
|
|
i ^= 1;
|
|
}
|
|
}
|
|
|
|
//#define RS_TABLE_SIZE 2
|
|
|
|
#define _SERIAL_PORT(_base,_irq) \
|
|
{ \
|
|
.mapbase = (_base), \
|
|
.membase = (void*)(_base), \
|
|
.irq = (_irq), \
|
|
.uartclk = DUART16552_XTAL_FREQ, \
|
|
.iotype = UPIO_MEM, \
|
|
.flags = UPF_BOOT_AUTOCONF, \
|
|
.regshift = 2, \
|
|
}
|
|
|
|
static struct plat_serial8250_port xt2000_serial_data[] = {
|
|
#if XCHAL_HAVE_BE
|
|
_SERIAL_PORT(DUART16552_1_ADDR + 3, DUART16552_1_INTNUM),
|
|
_SERIAL_PORT(DUART16552_2_ADDR + 3, DUART16552_2_INTNUM),
|
|
#else
|
|
_SERIAL_PORT(DUART16552_1_ADDR, DUART16552_1_INTNUM),
|
|
_SERIAL_PORT(DUART16552_2_ADDR, DUART16552_2_INTNUM),
|
|
#endif
|
|
{ }
|
|
};
|
|
|
|
static struct platform_device xt2000_serial8250_device = {
|
|
.name = "serial8250",
|
|
.id = PLAT8250_DEV_PLATFORM,
|
|
.dev = {
|
|
.platform_data = xt2000_serial_data,
|
|
},
|
|
};
|
|
|
|
static struct resource xt2000_sonic_res[] = {
|
|
{
|
|
.start = SONIC83934_ADDR,
|
|
.end = SONIC83934_ADDR + 0xff,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
{
|
|
.start = SONIC83934_INTNUM,
|
|
.end = SONIC83934_INTNUM,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct platform_device xt2000_sonic_device = {
|
|
.name = "xtsonic",
|
|
.num_resources = ARRAY_SIZE(xt2000_sonic_res),
|
|
.resource = xt2000_sonic_res,
|
|
};
|
|
|
|
static int __init xt2000_setup_devinit(void)
|
|
{
|
|
platform_device_register(&xt2000_serial8250_device);
|
|
platform_device_register(&xt2000_sonic_device);
|
|
|
|
return 0;
|
|
}
|
|
|
|
device_initcall(xt2000_setup_devinit);
|