cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

setup.c (3123B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 * arch/xtensa/platforms/xt2000/setup.c
      4 *
      5 * Platform specific functions for the XT2000 board.
      6 *
      7 * Authors:	Chris Zankel <chris@zankel.net>
      8 *		Joe Taylor <joe@tensilica.com>
      9 *
     10 * Copyright 2001 - 2004 Tensilica Inc.
     11 */
     12#include <linux/stddef.h>
     13#include <linux/kernel.h>
     14#include <linux/init.h>
     15#include <linux/errno.h>
     16#include <linux/reboot.h>
     17#include <linux/kdev_t.h>
     18#include <linux/types.h>
     19#include <linux/major.h>
     20#include <linux/console.h>
     21#include <linux/delay.h>
     22#include <linux/stringify.h>
     23#include <linux/platform_device.h>
     24#include <linux/serial.h>
     25#include <linux/serial_8250.h>
     26
     27#include <asm/processor.h>
     28#include <asm/platform.h>
     29#include <asm/bootparam.h>
     30#include <platform/hardware.h>
     31#include <platform/serial.h>
     32
     33/* Assumes s points to an 8-chr string.  No checking for NULL. */
     34
     35static void led_print (int f, char *s)
     36{
     37	unsigned long* led_addr = (unsigned long*) (XT2000_LED_ADDR + 0xE0) + f;
     38	int i;
     39	for (i = f; i < 8; i++)
     40		if ((*led_addr++ = *s++) == 0)
     41		    break;
     42}
     43
     44void platform_halt(void)
     45{
     46	led_print (0, "  HALT  ");
     47	local_irq_disable();
     48	while (1);
     49}
     50
     51void platform_power_off(void)
     52{
     53	led_print (0, "POWEROFF");
     54	local_irq_disable();
     55	while (1);
     56}
     57
     58void platform_restart(void)
     59{
     60	/* Flush and reset the mmu, simulate a processor reset, and
     61	 * jump to the reset vector. */
     62	cpu_reset();
     63	/* control never gets here */
     64}
     65
     66void __init platform_setup(char** cmdline)
     67{
     68	led_print (0, "LINUX   ");
     69}
     70
     71/* early initialization */
     72
     73void __init platform_init(bp_tag_t *first)
     74{
     75}
     76
     77/* Heartbeat. Let the LED blink. */
     78
     79void platform_heartbeat(void)
     80{
     81	static int i, t;
     82
     83	if (--t < 0)
     84	{
     85		t = 59;
     86		led_print(7, i ? ".": " ");
     87		i ^= 1;
     88	}
     89}
     90
     91//#define RS_TABLE_SIZE 2
     92
     93#define _SERIAL_PORT(_base,_irq)					\
     94{									\
     95	.mapbase	= (_base),					\
     96	.membase	= (void*)(_base),				\
     97	.irq		= (_irq),					\
     98	.uartclk	= DUART16552_XTAL_FREQ,				\
     99	.iotype		= UPIO_MEM,					\
    100	.flags		= UPF_BOOT_AUTOCONF,				\
    101	.regshift	= 2,						\
    102}
    103
    104static struct plat_serial8250_port xt2000_serial_data[] = {
    105#if XCHAL_HAVE_BE
    106	_SERIAL_PORT(DUART16552_1_ADDR + 3, DUART16552_1_INTNUM),
    107	_SERIAL_PORT(DUART16552_2_ADDR + 3, DUART16552_2_INTNUM),
    108#else
    109	_SERIAL_PORT(DUART16552_1_ADDR, DUART16552_1_INTNUM),
    110	_SERIAL_PORT(DUART16552_2_ADDR, DUART16552_2_INTNUM),
    111#endif
    112	{ }
    113};
    114
    115static struct platform_device xt2000_serial8250_device = {
    116	.name		= "serial8250",
    117	.id		= PLAT8250_DEV_PLATFORM,
    118	.dev		= {
    119	    .platform_data = xt2000_serial_data,
    120	},
    121};
    122
    123static struct resource xt2000_sonic_res[] = {
    124	{
    125		.start = SONIC83934_ADDR,
    126		.end   = SONIC83934_ADDR + 0xff,
    127		.flags = IORESOURCE_MEM,
    128	},
    129	{
    130		.start = SONIC83934_INTNUM,
    131		.end = SONIC83934_INTNUM,
    132		.flags = IORESOURCE_IRQ,
    133	},
    134};
    135
    136static struct platform_device xt2000_sonic_device = {
    137	.name		= "xtsonic",
    138	.num_resources	= ARRAY_SIZE(xt2000_sonic_res),
    139	.resource		= xt2000_sonic_res,
    140};
    141
    142static int __init xt2000_setup_devinit(void)
    143{
    144	platform_device_register(&xt2000_serial8250_device);
    145	platform_device_register(&xt2000_sonic_device);
    146
    147	return 0;
    148}
    149
    150device_initcall(xt2000_setup_devinit);