mirror of https://gitee.com/openkylin/linux.git
165 lines
4.0 KiB
C
165 lines
4.0 KiB
C
/***************************************************************************/
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/*
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* linux/arch/m68knommu/platform/5272/config.c
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*
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* Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
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* Copyright (C) 2001-2002, 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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extern unsigned int mcf_timervector;
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extern unsigned int mcf_profilevector;
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extern unsigned int mcf_timerlevel;
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/***************************************************************************/
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/*
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* Some platforms need software versions of the GPIO data registers.
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*/
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unsigned short ppdata;
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unsigned char ledbank = 0xff;
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/***************************************************************************/
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static struct mcf_platform_uart m5272_uart_platform[] = {
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{
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.mapbase = MCF_MBAR + MCFUART_BASE1,
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.irq = 73,
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},
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{
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.mapbase = MCF_MBAR + MCFUART_BASE2,
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.irq = 74,
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},
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{ },
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};
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static struct platform_device m5272_uart = {
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.name = "mcfuart",
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.id = 0,
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.dev.platform_data = m5272_uart_platform,
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};
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static struct platform_device *m5272_devices[] __initdata = {
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&m5272_uart,
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};
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/***************************************************************************/
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static void __init m5272_uart_init_line(int line, int irq)
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{
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u32 v;
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if ((line >= 0) && (line < 2)) {
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v = (line) ? 0x0e000000 : 0xe0000000;
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writel(v, MCF_MBAR + MCFSIM_ICR2);
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/* Enable the output lines for the serial ports */
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v = readl(MCF_MBAR + MCFSIM_PBCNT);
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v = (v & ~0x000000ff) | 0x00000055;
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writel(v, MCF_MBAR + MCFSIM_PBCNT);
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v = readl(MCF_MBAR + MCFSIM_PDCNT);
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v = (v & ~0x000003fc) | 0x000002a8;
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writel(v, MCF_MBAR + MCFSIM_PDCNT);
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}
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}
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static void __init m5272_uarts_init(void)
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{
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const int nrlines = ARRAY_SIZE(m5272_uart_platform);
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int line;
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for (line = 0; (line < nrlines); line++)
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m5272_uart_init_line(line, m5272_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 *icrp;
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icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
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icrp[0] = 0x88888888;
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icrp[1] = 0x88888888;
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icrp[2] = 0x88888888;
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icrp[3] = 0x88888888;
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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 mcf_settimericr(int timer, int level)
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{
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volatile unsigned long *icrp;
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if ((timer >= 1 ) && (timer <= 4)) {
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icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
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*icrp = (0x8 | level) << ((4 - timer) * 4);
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}
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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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#if defined (CONFIG_MOD5272)
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volatile unsigned char *pivrp;
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/* Set base of device vectors to be 64 */
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pivrp = (volatile unsigned char *) (MCF_MBAR + MCFSIM_PIVR);
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*pivrp = 0x40;
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#endif
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mcf_disableall();
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#if defined(CONFIG_NETtel) || defined(CONFIG_SCALES)
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/* Copy command line from FLASH to local buffer... */
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memcpy(commandp, (char *) 0xf0004000, size);
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commandp[size-1] = 0;
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#elif defined(CONFIG_CANCam)
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/* Copy command line from FLASH to local buffer... */
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memcpy(commandp, (char *) 0xf0010000, size);
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commandp[size-1] = 0;
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#endif
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mcf_timervector = 69;
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mcf_profilevector = 70;
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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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m5272_uarts_init();
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platform_add_devices(m5272_devices, ARRAY_SIZE(m5272_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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