1// SPDX-License-Identifier: GPL-2.0-or-later
  2/*
  3 * BRIEF MODULE DESCRIPTION
  4 *	MyCable XXS1500 board support
  5 *
  6 * Copyright 2003, 2008 MontaVista Software Inc.
  7 * Author: MontaVista Software, Inc. <source@mvista.com>
  8 */
  9
 10#include <linux/kernel.h>
 11#include <linux/init.h>
 12#include <linux/interrupt.h>
 13#include <linux/platform_device.h>
 14#include <linux/gpio.h>
 15#include <linux/delay.h>
 16#include <linux/pm.h>
 17#include <asm/bootinfo.h>
 18#include <asm/reboot.h>
 19#include <asm/setup.h>
 20#include <asm/mach-au1x00/au1000.h>
 21#include <prom.h>
 22
 23const char *get_system_type(void)
 24{
 25	return "XXS1500";
 26}
 27
 28void __init prom_init(void)
 29{
 30	unsigned char *memsize_str;
 31	unsigned long memsize;
 32
 33	prom_argc = fw_arg0;
 34	prom_argv = (char **)fw_arg1;
 35	prom_envp = (char **)fw_arg2;
 36
 37	prom_init_cmdline();
 38
 39	memsize_str = prom_getenv("memsize");
 40	if (!memsize_str || kstrtoul(memsize_str, 0, &memsize))
 41		memsize = 0x04000000;
 42
 43	add_memory_region(0, memsize, BOOT_MEM_RAM);
 44}
 45
 46void prom_putchar(char c)
 47{
 48	alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
 49}
 50
 51static void xxs1500_reset(char *c)
 52{
 53	/* Jump to the reset vector */
 54	__asm__ __volatile__("jr\t%0" : : "r"(0xbfc00000));
 55}
 56
 57static void xxs1500_power_off(void)
 58{
 59	while (1)
 60		asm volatile (
 61		"	.set	mips32					\n"
 62		"	wait						\n"
 63		"	.set	mips0					\n");
 64}
 65
 66void __init board_setup(void)
 67{
 68	u32 pin_func;
 69
 70	pm_power_off = xxs1500_power_off;
 71	_machine_halt = xxs1500_power_off;
 72	_machine_restart = xxs1500_reset;
 73
 74	alchemy_gpio1_input_enable();
 75	alchemy_gpio2_enable();
 76
 77	/* Set multiple use pins (UART3/GPIO) to UART (it's used as UART too) */
 78	pin_func  = alchemy_rdsys(AU1000_SYS_PINFUNC) & ~SYS_PF_UR3;
 79	pin_func |= SYS_PF_UR3;
 80	alchemy_wrsys(pin_func, AU1000_SYS_PINFUNC);
 81
 82	/* Enable UART */
 83	alchemy_uart_enable(AU1000_UART3_PHYS_ADDR);
 84	/* Enable DTR (MCR bit 0) = USB power up */
 85	__raw_writel(1, (void __iomem *)KSEG1ADDR(AU1000_UART3_PHYS_ADDR + 0x18));
 86	wmb();
 87}
 88
 89/******************************************************************************/
 90
 91static struct resource xxs1500_pcmcia_res[] = {
 92	{
 93		.name	= "pcmcia-io",
 94		.flags	= IORESOURCE_MEM,
 95		.start	= AU1000_PCMCIA_IO_PHYS_ADDR,
 96		.end	= AU1000_PCMCIA_IO_PHYS_ADDR + 0x000400000 - 1,
 97	},
 98	{
 99		.name	= "pcmcia-attr",
100		.flags	= IORESOURCE_MEM,
101		.start	= AU1000_PCMCIA_ATTR_PHYS_ADDR,
102		.end	= AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1,
103	},
104	{
105		.name	= "pcmcia-mem",
106		.flags	= IORESOURCE_MEM,
107		.start	= AU1000_PCMCIA_MEM_PHYS_ADDR,
108		.end	= AU1000_PCMCIA_MEM_PHYS_ADDR + 0x000400000 - 1,
109	},
110};
111
112static struct platform_device xxs1500_pcmcia_dev = {
113	.name		= "xxs1500_pcmcia",
114	.id		= -1,
115	.num_resources	= ARRAY_SIZE(xxs1500_pcmcia_res),
116	.resource	= xxs1500_pcmcia_res,
117};
118
119static struct platform_device *xxs1500_devs[] __initdata = {
120	&xxs1500_pcmcia_dev,
121};
122
123static int __init xxs1500_dev_init(void)
124{
125	irq_set_irq_type(AU1500_GPIO204_INT, IRQ_TYPE_LEVEL_HIGH);
126	irq_set_irq_type(AU1500_GPIO201_INT, IRQ_TYPE_LEVEL_LOW);
127	irq_set_irq_type(AU1500_GPIO202_INT, IRQ_TYPE_LEVEL_LOW);
128	irq_set_irq_type(AU1500_GPIO203_INT, IRQ_TYPE_LEVEL_LOW);
129	irq_set_irq_type(AU1500_GPIO205_INT, IRQ_TYPE_LEVEL_LOW);
130	irq_set_irq_type(AU1500_GPIO207_INT, IRQ_TYPE_LEVEL_LOW);
131
132	irq_set_irq_type(AU1500_GPIO0_INT, IRQ_TYPE_LEVEL_LOW);
133	irq_set_irq_type(AU1500_GPIO1_INT, IRQ_TYPE_LEVEL_LOW);
134	irq_set_irq_type(AU1500_GPIO2_INT, IRQ_TYPE_LEVEL_LOW);
135	irq_set_irq_type(AU1500_GPIO3_INT, IRQ_TYPE_LEVEL_LOW);
136	irq_set_irq_type(AU1500_GPIO4_INT, IRQ_TYPE_LEVEL_LOW); /* CF irq */
137	irq_set_irq_type(AU1500_GPIO5_INT, IRQ_TYPE_LEVEL_LOW);
138
139	return platform_add_devices(xxs1500_devs,
140				    ARRAY_SIZE(xxs1500_devs));
141}
142device_initcall(xxs1500_dev_init);