116 lines
2.7 KiB
C
116 lines
2.7 KiB
C
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/***************************************************************************/
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/*
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* linux/arch/m68knommu/platform/548x/config.c
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*
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* Copyright (C) 2010, Philippe De Muyter <phdm@macqel.be>
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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/io.h>
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#include <asm/machdep.h>
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#include <asm/coldfire.h>
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#include <asm/m548xsim.h>
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#include <asm/mcfuart.h>
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#include <asm/m548xgpt.h>
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/***************************************************************************/
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static struct mcf_platform_uart m548x_uart_platform[] = {
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{
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.mapbase = MCF_MBAR + MCFUART_BASE1,
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.irq = 64 + 35,
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},
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{
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.mapbase = MCF_MBAR + MCFUART_BASE2,
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.irq = 64 + 34,
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},
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{
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.mapbase = MCF_MBAR + MCFUART_BASE3,
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.irq = 64 + 33,
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},
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{
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.mapbase = MCF_MBAR + MCFUART_BASE4,
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.irq = 64 + 32,
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},
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};
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static struct platform_device m548x_uart = {
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.name = "mcfuart",
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.id = 0,
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.dev.platform_data = m548x_uart_platform,
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};
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static struct platform_device *m548x_devices[] __initdata = {
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&m548x_uart,
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};
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/***************************************************************************/
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static void __init m548x_uart_init_line(int line, int irq)
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{
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int rts_cts;
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/* enable io pins */
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switch (line) {
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case 0:
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rts_cts = 0; break;
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case 1:
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rts_cts = MCF_PAR_PSC_RTS_RTS; break;
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case 2:
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rts_cts = MCF_PAR_PSC_RTS_RTS | MCF_PAR_PSC_CTS_CTS; break;
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case 3:
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rts_cts = 0; break;
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}
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__raw_writeb(MCF_PAR_PSC_TXD | rts_cts | MCF_PAR_PSC_RXD,
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MCF_MBAR + MCF_PAR_PSC(line));
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}
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static void __init m548x_uarts_init(void)
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{
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const int nrlines = ARRAY_SIZE(m548x_uart_platform);
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int line;
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for (line = 0; (line < nrlines); line++)
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m548x_uart_init_line(line, m548x_uart_platform[line].irq);
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}
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/***************************************************************************/
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static void mcf548x_reset(void)
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{
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/* disable interrupts and enable the watchdog */
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asm("movew #0x2700, %sr\n");
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__raw_writel(0, MCF_MBAR + MCF_GPT_GMS0);
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__raw_writel(MCF_GPT_GCIR_CNT(1), MCF_MBAR + MCF_GPT_GCIR0);
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__raw_writel(MCF_GPT_GMS_WDEN | MCF_GPT_GMS_CE | MCF_GPT_GMS_TMS(4),
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MCF_MBAR + MCF_GPT_GMS0);
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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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mach_reset = mcf548x_reset;
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m548x_uarts_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(m548x_devices, ARRAY_SIZE(m548x_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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