1 /***************************************************************************/
4 * linux/arch/m68knommu/platform/527x/config.c
6 * Sub-architcture dependant initialization code for the Freescale
9 * Copyright (C) 1999-2004, Greg Ungerer (gerg@snapgear.com)
10 * Copyright (C) 2001-2004, SnapGear Inc. (www.snapgear.com)
13 /***************************************************************************/
15 #include <linux/kernel.h>
16 #include <linux/param.h>
17 #include <linux/init.h>
18 #include <linux/interrupt.h>
20 #include <asm/machdep.h>
21 #include <asm/coldfire.h>
22 #include <asm/mcfsim.h>
23 #include <asm/mcfuart.h>
25 /***************************************************************************/
27 void coldfire_reset(void);
29 /***************************************************************************/
31 static struct mcf_platform_uart m527x_uart_platform[] = {
33 .mapbase = MCF_MBAR + MCFUART_BASE1,
34 .irq = MCFINT_VECBASE + MCFINT_UART0,
37 .mapbase = MCF_MBAR + MCFUART_BASE2,
38 .irq = MCFINT_VECBASE + MCFINT_UART1,
41 .mapbase = MCF_MBAR + MCFUART_BASE3,
42 .irq = MCFINT_VECBASE + MCFINT_UART2,
47 static struct platform_device m527x_uart = {
50 .dev.platform_data = m527x_uart_platform,
53 static struct platform_device *m527x_devices[] __initdata = {
57 /***************************************************************************/
59 #define INTC0 (MCF_MBAR + MCFICM_INTC0)
61 static void __init m527x_uart_init_line(int line, int irq)
66 if ((line < 0) || (line > 2))
69 /* level 6, line based priority */
70 writeb(0x30+line, INTC0 + MCFINTC_ICR0 + MCFINT_UART0 + line);
72 imr = readl(INTC0 + MCFINTC_IMRL);
73 imr &= ~((1 << (irq - MCFINT_VECBASE)) | 1);
74 writel(imr, INTC0 + MCFINTC_IMRL);
77 * External Pin Mask Setting & Enable External Pin for Interface
79 sepmask = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART);
81 sepmask |= UART0_ENABLE_MASK;
83 sepmask |= UART1_ENABLE_MASK;
85 sepmask |= UART2_ENABLE_MASK;
86 writew(sepmask, MCF_IPSBAR + MCF_GPIO_PAR_UART);
89 static void __init m527x_uarts_init(void)
91 const int nrlines = ARRAY_SIZE(m527x_uart_platform);
94 for (line = 0; (line < nrlines); line++)
95 m527x_uart_init_line(line, m527x_uart_platform[line].irq);
98 /***************************************************************************/
100 void mcf_disableall(void)
102 *((volatile unsigned long *) (MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRH)) = 0xffffffff;
103 *((volatile unsigned long *) (MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRL)) = 0xffffffff;
106 /***************************************************************************/
108 void mcf_autovector(unsigned int vec)
110 /* Everything is auto-vectored on the 5272 */
113 /***************************************************************************/
115 void __init config_BSP(char *commandp, int size)
118 mach_reset = coldfire_reset;
121 /***************************************************************************/
123 static int __init init_BSP(void)
126 platform_add_devices(m527x_devices, ARRAY_SIZE(m527x_devices));
130 arch_initcall(init_BSP);
132 /***************************************************************************/