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/***************************************************************************/
/*
* linux/arch/m68knommu/platform/5272/config.c
*
* Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
* Copyright (C) 2001-2002, SnapGear Inc. (www.snapgear.com)
*/
/***************************************************************************/
#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/init.h>
#include <linux/io.h>
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/mcfuart.h>
/***************************************************************************/
/*
* Some platforms need software versions of the GPIO data registers.
*/
unsigned short ppdata;
unsigned char ledbank = 0xff;
/***************************************************************************/
static struct mcf_platform_uart m5272_uart_platform[] = {
{
.mapbase = MCF_MBAR + MCFUART_BASE1,
.irq = 73,
},
{
.mapbase = MCF_MBAR + MCFUART_BASE2,
.irq = 74,
},
{ },
};
static struct platform_device m5272_uart = {
.name = "mcfuart",
.id = 0,
.dev.platform_data = m5272_uart_platform,
};
static struct resource m5272_fec_resources[] = {
{
.start = MCF_MBAR + 0x840,
.end = MCF_MBAR + 0x840 + 0x1cf,
.flags = IORESOURCE_MEM,
},
{
.start = 86,
.end = 86,
.flags = IORESOURCE_IRQ,
},
{
.start = 87,
.end = 87,
.flags = IORESOURCE_IRQ,
},
{
.start = 88,
.end = 88,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device m5272_fec = {
.name = "fec",
.id = 0,
.num_resources = ARRAY_SIZE(m5272_fec_resources),
.resource = m5272_fec_resources,
};
static struct platform_device *m5272_devices[] __initdata = {
&m5272_uart,
&m5272_fec,
};
/***************************************************************************/
static void __init m5272_uart_init_line(int line, int irq)
{
u32 v;
if ((line >= 0) && (line < 2)) {
v = (line) ? 0x0e000000 : 0xe0000000;
writel(v, MCF_MBAR + MCFSIM_ICR2);
/* Enable the output lines for the serial ports */
v = readl(MCF_MBAR + MCFSIM_PBCNT);
v = (v & ~0x000000ff) | 0x00000055;
writel(v, MCF_MBAR + MCFSIM_PBCNT);
v = readl(MCF_MBAR + MCFSIM_PDCNT);
v = (v & ~0x000003fc) | 0x000002a8;
writel(v, MCF_MBAR + MCFSIM_PDCNT);
}
}
static void __init m5272_uarts_init(void)
{
const int nrlines = ARRAY_SIZE(m5272_uart_platform);
int line;
for (line = 0; (line < nrlines); line++)
m5272_uart_init_line(line, m5272_uart_platform[line].irq);
}
/***************************************************************************/
static void __init m5272_fec_init(void)
{
u32 imr;
/* Unmask FEC interrupts at ColdFire interrupt controller */
imr = readl(MCF_MBAR + MCFSIM_ICR3);
imr = (imr & ~0x00000fff) | 0x00000ddd;
writel(imr, MCF_MBAR + MCFSIM_ICR3);
imr = readl(MCF_MBAR + MCFSIM_ICR1);
imr = (imr & ~0x0f000000) | 0x0d000000;
writel(imr, MCF_MBAR + MCFSIM_ICR1);
}
/***************************************************************************/
void mcf_disableall(void)
{
volatile unsigned long *icrp;
icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
icrp[0] = 0x88888888;
icrp[1] = 0x88888888;
icrp[2] = 0x88888888;
icrp[3] = 0x88888888;
}
/***************************************************************************/
static void __init m5272_timers_init(void)
{
/* Timer1 @ level6 is always used as system timer */
writel((0x8 | 0x6) << ((4 - 1) * 4), MCF_MBAR + MCFSIM_ICR1);
#ifdef CONFIG_HIGHPROFILE
/* Timer2 @ level7 is to be used as a high speed profile timer */
writel((0x8 | 0x7) << ((4 - 2) * 4), MCF_MBAR + MCFSIM_ICR1);
#endif
}
/***************************************************************************/
static void m5272_cpu_reset(void)
{
local_irq_disable();
/* Set watchdog to reset, and enabled */
__raw_writew(0, MCF_MBAR + MCFSIM_WIRR);
__raw_writew(1, MCF_MBAR + MCFSIM_WRRR);
__raw_writew(0, MCF_MBAR + MCFSIM_WCR);
for (;;)
/* wait for watchdog to timeout */;
}
/***************************************************************************/
void __init config_BSP(char *commandp, int size)
{
#if defined (CONFIG_MOD5272)
volatile unsigned char *pivrp;
/* Set base of device vectors to be 64 */
pivrp = (volatile unsigned char *) (MCF_MBAR + MCFSIM_PIVR);
*pivrp = 0x40;
#endif
mcf_disableall();
#if defined(CONFIG_NETtel) || defined(CONFIG_SCALES)
/* Copy command line from FLASH to local buffer... */
memcpy(commandp, (char *) 0xf0004000, size);
commandp[size-1] = 0;
#elif defined(CONFIG_CANCam)
/* Copy command line from FLASH to local buffer... */
memcpy(commandp, (char *) 0xf0010000, size);
commandp[size-1] = 0;
#endif
mach_reset = m5272_cpu_reset;
m5272_timers_init();
}
/***************************************************************************/
static int __init init_BSP(void)
{
m5272_uarts_init();
m5272_fec_init();
platform_add_devices(m5272_devices, ARRAY_SIZE(m5272_devices));
return 0;
}
arch_initcall(init_BSP);
/***************************************************************************/
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