132 lines
3.3 KiB
C
132 lines
3.3 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 Motorola
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* 5280 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/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/flash.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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#include <asm/mcfqspi.h>
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/***************************************************************************/
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void coldfire_reset(void);
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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 platform_device *m528x_devices[] __initdata = {
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&m528x_uart,
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};
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/***************************************************************************/
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#define INTC0 (MCF_MBAR + MCFICM_INTC0)
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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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u32 imr;
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if ((line < 0) || (line > 2))
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return;
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/* level 6, line based priority */
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writeb(0x30+line, INTC0 + MCFINTC_ICR0 + MCFINT_UART0 + line);
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imr = readl(INTC0 + MCFINTC_IMRL);
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imr &= ~((1 << (irq - MCFINT_VECBASE)) | 1);
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writel(imr, INTC0 + MCFINTC_IMRL);
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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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void mcf_disableall(void)
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{
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*((volatile unsigned long *) (MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRH)) = 0xffffffff;
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*((volatile unsigned long *) (MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRL)) = 0xffffffff;
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}
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/***************************************************************************/
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void mcf_autovector(unsigned int vec)
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{
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/* Everything is auto-vectored on the 5272 */
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}
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/***************************************************************************/
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void __init config_BSP(char *commandp, int size)
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{
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mcf_disableall();
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mach_reset = coldfire_reset;
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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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m528x_uarts_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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