172 lines
4.2 KiB
C
172 lines
4.2 KiB
C
/***************************************************************************/
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/*
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* linux/arch/m68knommu/platform/523x/config.c
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*
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* Sub-architcture dependant initialization code for the Freescale
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* 523x CPUs.
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*
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* Copyright (C) 1999-2005, 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/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 m523x_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 m523x_uart = {
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.name = "mcfuart",
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.id = 0,
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.dev.platform_data = m523x_uart_platform,
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};
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static struct resource m523x_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 m523x_fec = {
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.name = "fec",
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.id = 0,
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.num_resources = ARRAY_SIZE(m523x_fec_resources),
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.resource = m523x_fec_resources,
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};
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static struct platform_device *m523x_devices[] __initdata = {
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&m523x_uart,
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&m523x_fec,
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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 m523x_uart_init_line(int line, int irq)
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{
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u32 imr;
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if ((line < 0) || (line > 2))
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return;
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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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}
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static void __init m523x_uarts_init(void)
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{
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const int nrlines = ARRAY_SIZE(m523x_uart_platform);
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int line;
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for (line = 0; (line < nrlines); line++)
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m523x_uart_init_line(line, m523x_uart_platform[line].irq);
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}
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/***************************************************************************/
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static void __init m523x_fec_init(void)
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{
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u32 imr;
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/* Unmask FEC interrupts at ColdFire interrupt controller */
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writeb(0x28, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_ICR0 + 23);
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writeb(0x27, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_ICR0 + 27);
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writeb(0x26, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_ICR0 + 29);
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imr = readl(MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRH);
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imr &= ~0xf;
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writel(imr, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRH);
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imr = readl(MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRL);
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imr &= ~0xff800001;
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writel(imr, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRL);
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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 523x */
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}
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/***************************************************************************/
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static void m523x_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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void __init config_BSP(char *commandp, int size)
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{
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mcf_disableall();
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mach_reset = m523x_cpu_reset;
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m523x_uarts_init();
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m523x_fec_init();
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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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platform_add_devices(m523x_devices, ARRAY_SIZE(m523x_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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