184 lines
4.0 KiB
C
184 lines
4.0 KiB
C
/***************************************************************************/
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/*
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* linux/arch/m68knommu/platform/528x/config.c
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*
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* Sub-architcture dependant initialization code for the Freescale
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* 5280, 5281 and 5282 CPUs.
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*
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* Copyright (C) 1999-2003, Greg Ungerer (gerg@snapgear.com)
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* Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com)
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*/
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/***************************************************************************/
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#include <linux/kernel.h>
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#include <linux/param.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <asm/machdep.h>
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#include <asm/coldfire.h>
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#include <asm/mcfsim.h>
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#include <asm/mcfuart.h>
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/***************************************************************************/
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static struct mcf_platform_uart m528x_uart_platform[] = {
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{
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.mapbase = MCF_MBAR + MCFUART_BASE1,
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.irq = MCFINT_VECBASE + MCFINT_UART0,
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},
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{
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.mapbase = MCF_MBAR + MCFUART_BASE2,
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.irq = MCFINT_VECBASE + MCFINT_UART0 + 1,
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},
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{
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.mapbase = MCF_MBAR + MCFUART_BASE3,
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.irq = MCFINT_VECBASE + MCFINT_UART0 + 2,
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},
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{ },
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};
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static struct platform_device m528x_uart = {
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.name = "mcfuart",
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.id = 0,
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.dev.platform_data = m528x_uart_platform,
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};
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static struct resource m528x_fec_resources[] = {
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{
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.start = MCF_MBAR + 0x1000,
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.end = MCF_MBAR + 0x1000 + 0x7ff,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = 64 + 23,
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.end = 64 + 23,
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.flags = IORESOURCE_IRQ,
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},
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{
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.start = 64 + 27,
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.end = 64 + 27,
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.flags = IORESOURCE_IRQ,
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},
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{
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.start = 64 + 29,
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.end = 64 + 29,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device m528x_fec = {
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.name = "fec",
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.id = 0,
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.num_resources = ARRAY_SIZE(m528x_fec_resources),
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.resource = m528x_fec_resources,
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};
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static struct platform_device *m528x_devices[] __initdata = {
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&m528x_uart,
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&m528x_fec,
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};
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/***************************************************************************/
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static void __init m528x_uart_init_line(int line, int irq)
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{
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u8 port;
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if ((line < 0) || (line > 2))
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return;
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/* make sure PUAPAR is set for UART0 and UART1 */
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if (line < 2) {
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port = readb(MCF_MBAR + MCF5282_GPIO_PUAPAR);
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port |= (0x03 << (line * 2));
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writeb(port, MCF_MBAR + MCF5282_GPIO_PUAPAR);
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}
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}
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static void __init m528x_uarts_init(void)
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{
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const int nrlines = ARRAY_SIZE(m528x_uart_platform);
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int line;
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for (line = 0; (line < nrlines); line++)
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m528x_uart_init_line(line, m528x_uart_platform[line].irq);
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}
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/***************************************************************************/
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static void __init m528x_fec_init(void)
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{
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u16 v16;
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/* Set multi-function pins to ethernet mode for fec0 */
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v16 = readw(MCF_IPSBAR + 0x100056);
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writew(v16 | 0xf00, MCF_IPSBAR + 0x100056);
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writeb(0xc0, MCF_IPSBAR + 0x100058);
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}
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/***************************************************************************/
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static void m528x_cpu_reset(void)
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{
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local_irq_disable();
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__raw_writeb(MCF_RCR_SWRESET, MCF_IPSBAR + MCF_RCR);
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}
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/***************************************************************************/
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#ifdef CONFIG_WILDFIRE
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void wildfire_halt(void)
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{
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writeb(0, 0x30000007);
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writeb(0x2, 0x30000007);
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}
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#endif
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#ifdef CONFIG_WILDFIREMOD
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void wildfiremod_halt(void)
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{
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printk(KERN_INFO "WildFireMod hibernating...\n");
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/* Set portE.5 to Digital IO */
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MCF5282_GPIO_PEPAR &= ~(1 << (5 * 2));
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/* Make portE.5 an output */
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MCF5282_GPIO_DDRE |= (1 << 5);
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/* Now toggle portE.5 from low to high */
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MCF5282_GPIO_PORTE &= ~(1 << 5);
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MCF5282_GPIO_PORTE |= (1 << 5);
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printk(KERN_EMERG "Failed to hibernate. Halting!\n");
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}
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#endif
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void __init config_BSP(char *commandp, int size)
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{
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#ifdef CONFIG_WILDFIRE
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mach_halt = wildfire_halt;
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#endif
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#ifdef CONFIG_WILDFIREMOD
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mach_halt = wildfiremod_halt;
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#endif
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}
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/***************************************************************************/
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static int __init init_BSP(void)
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{
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mach_reset = m528x_cpu_reset;
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m528x_uarts_init();
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m528x_fec_init();
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platform_add_devices(m528x_devices, ARRAY_SIZE(m528x_devices));
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return 0;
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}
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arch_initcall(init_BSP);
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/***************************************************************************/
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