mirror of https://gitee.com/openkylin/linux.git
134 lines
3.3 KiB
C
134 lines
3.3 KiB
C
/***************************************************************************/
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/*
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* linux/arch/m68knommu/platform/520x/config.c
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*
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* Copyright (C) 2005, Freescale (www.freescale.com)
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* Copyright (C) 2005, Intec Automation (mike@steroidmicros.com)
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* Copyright (C) 1999-2007, 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/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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void coldfire_reset(void);
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/***************************************************************************/
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static struct mcf_platform_uart m520x_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_UART1,
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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_UART2,
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},
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{ },
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};
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static struct platform_device m520x_uart = {
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.name = "mcfuart",
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.id = 0,
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.dev.platform_data = m520x_uart_platform,
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};
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static struct platform_device *m520x_devices[] __initdata = {
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&m520x_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 m520x_uart_init_line(int line, int irq)
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{
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u32 imr;
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u16 par;
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u8 par2;
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writeb(0x03, 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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switch (line) {
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case 0:
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par = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART);
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par |= MCF_GPIO_PAR_UART_PAR_UTXD0 |
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MCF_GPIO_PAR_UART_PAR_URXD0;
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writew(par, MCF_IPSBAR + MCF_GPIO_PAR_UART);
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break;
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case 1:
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par = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART);
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par |= MCF_GPIO_PAR_UART_PAR_UTXD1 |
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MCF_GPIO_PAR_UART_PAR_URXD1;
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writew(par, MCF_IPSBAR + MCF_GPIO_PAR_UART);
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break;
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case 2:
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par2 = readb(MCF_IPSBAR + MCF_GPIO_PAR_FECI2C);
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par2 &= ~0x0F;
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par2 |= MCF_GPIO_PAR_FECI2C_PAR_SCL_UTXD2 |
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MCF_GPIO_PAR_FECI2C_PAR_SDA_URXD2;
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writeb(par2, MCF_IPSBAR + MCF_GPIO_PAR_FECI2C);
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break;
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}
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}
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static void __init m520x_uarts_init(void)
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{
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const int nrlines = ARRAY_SIZE(m520x_uart_platform);
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int line;
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for (line = 0; (line < nrlines); line++)
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m520x_uart_init_line(line, m520x_uart_platform[line].irq);
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}
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/***************************************************************************/
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/*
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* Program the vector to be an auto-vectored.
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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 520x devices */
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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 = coldfire_reset;
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m520x_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(m520x_devices, ARRAY_SIZE(m520x_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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