1 /***************************************************************************/
4 * linux/arch/m68knommu/platform/528x/config.c
6 * Sub-architcture dependant initialization code for the Freescale
7 * 5280, 5281 and 5282 CPUs.
9 * Copyright (C) 1999-2003, Greg Ungerer (gerg@snapgear.com)
10 * Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com)
13 /***************************************************************************/
15 #include <linux/kernel.h>
16 #include <linux/param.h>
17 #include <linux/init.h>
18 #include <linux/platform_device.h>
20 #include <asm/machdep.h>
21 #include <asm/coldfire.h>
22 #include <asm/mcfsim.h>
23 #include <asm/mcfuart.h>
25 /***************************************************************************/
27 static struct mcf_platform_uart m528x_uart_platform[] = {
29 .mapbase = MCF_MBAR + MCFUART_BASE1,
30 .irq = MCFINT_VECBASE + MCFINT_UART0,
33 .mapbase = MCF_MBAR + MCFUART_BASE2,
34 .irq = MCFINT_VECBASE + MCFINT_UART0 + 1,
37 .mapbase = MCF_MBAR + MCFUART_BASE3,
38 .irq = MCFINT_VECBASE + MCFINT_UART0 + 2,
43 static struct platform_device m528x_uart = {
46 .dev.platform_data = m528x_uart_platform,
49 static struct resource m528x_fec_resources[] = {
51 .start = MCF_MBAR + 0x1000,
52 .end = MCF_MBAR + 0x1000 + 0x7ff,
53 .flags = IORESOURCE_MEM,
58 .flags = IORESOURCE_IRQ,
63 .flags = IORESOURCE_IRQ,
68 .flags = IORESOURCE_IRQ,
72 static struct platform_device m528x_fec = {
75 .num_resources = ARRAY_SIZE(m528x_fec_resources),
76 .resource = m528x_fec_resources,
80 static struct platform_device *m528x_devices[] __initdata = {
85 /***************************************************************************/
87 static void __init m528x_uart_init_line(int line, int irq)
91 if ((line < 0) || (line > 2))
94 /* make sure PUAPAR is set for UART0 and UART1 */
96 port = readb(MCF_MBAR + MCF5282_GPIO_PUAPAR);
97 port |= (0x03 << (line * 2));
98 writeb(port, MCF_MBAR + MCF5282_GPIO_PUAPAR);
102 static void __init m528x_uarts_init(void)
104 const int nrlines = ARRAY_SIZE(m528x_uart_platform);
107 for (line = 0; (line < nrlines); line++)
108 m528x_uart_init_line(line, m528x_uart_platform[line].irq);
111 /***************************************************************************/
113 static void __init m528x_fec_init(void)
117 /* Set multi-function pins to ethernet mode for fec0 */
118 v16 = readw(MCF_IPSBAR + 0x100056);
119 writew(v16 | 0xf00, MCF_IPSBAR + 0x100056);
120 writeb(0xc0, MCF_IPSBAR + 0x100058);
123 /***************************************************************************/
125 static void m528x_cpu_reset(void)
128 __raw_writeb(MCF_RCR_SWRESET, MCF_IPSBAR + MCF_RCR);
131 /***************************************************************************/
133 #ifdef CONFIG_WILDFIRE
134 void wildfire_halt(void)
136 writeb(0, 0x30000007);
137 writeb(0x2, 0x30000007);
141 #ifdef CONFIG_WILDFIREMOD
142 void wildfiremod_halt(void)
144 printk(KERN_INFO "WildFireMod hibernating...\n");
146 /* Set portE.5 to Digital IO */
147 MCF5282_GPIO_PEPAR &= ~(1 << (5 * 2));
149 /* Make portE.5 an output */
150 MCF5282_GPIO_DDRE |= (1 << 5);
152 /* Now toggle portE.5 from low to high */
153 MCF5282_GPIO_PORTE &= ~(1 << 5);
154 MCF5282_GPIO_PORTE |= (1 << 5);
156 printk(KERN_EMERG "Failed to hibernate. Halting!\n");
160 void __init config_BSP(char *commandp, int size)
162 #ifdef CONFIG_WILDFIRE
163 mach_halt = wildfire_halt;
165 #ifdef CONFIG_WILDFIREMOD
166 mach_halt = wildfiremod_halt;
170 /***************************************************************************/
172 static int __init init_BSP(void)
174 mach_reset = m528x_cpu_reset;
177 platform_add_devices(m528x_devices, ARRAY_SIZE(m528x_devices));
181 arch_initcall(init_BSP);
183 /***************************************************************************/