136 lines
3.5 KiB
C
136 lines
3.5 KiB
C
/***************************************************************************/
|
|
|
|
/*
|
|
* m5272.c -- platform support for ColdFire 5272 based boards
|
|
*
|
|
* 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 <linux/phy.h>
|
|
#include <linux/phy_fixed.h>
|
|
#include <asm/machdep.h>
|
|
#include <asm/coldfire.h>
|
|
#include <asm/mcfsim.h>
|
|
#include <asm/mcfuart.h>
|
|
#include <asm/mcfclk.h>
|
|
|
|
/***************************************************************************/
|
|
|
|
/*
|
|
* Some platforms need software versions of the GPIO data registers.
|
|
*/
|
|
unsigned short ppdata;
|
|
unsigned char ledbank = 0xff;
|
|
|
|
/***************************************************************************/
|
|
|
|
DEFINE_CLK(pll, "pll.0", MCF_CLK);
|
|
DEFINE_CLK(sys, "sys.0", MCF_BUSCLK);
|
|
DEFINE_CLK(mcftmr0, "mcftmr.0", MCF_BUSCLK);
|
|
DEFINE_CLK(mcftmr1, "mcftmr.1", MCF_BUSCLK);
|
|
DEFINE_CLK(mcftmr2, "mcftmr.2", MCF_BUSCLK);
|
|
DEFINE_CLK(mcftmr3, "mcftmr.3", MCF_BUSCLK);
|
|
DEFINE_CLK(mcfuart0, "mcfuart.0", MCF_BUSCLK);
|
|
DEFINE_CLK(mcfuart1, "mcfuart.1", MCF_BUSCLK);
|
|
DEFINE_CLK(mcfqspi0, "mcfqspi.0", MCF_BUSCLK);
|
|
DEFINE_CLK(fec0, "fec.0", MCF_BUSCLK);
|
|
|
|
struct clk *mcf_clks[] = {
|
|
&clk_pll,
|
|
&clk_sys,
|
|
&clk_mcftmr0,
|
|
&clk_mcftmr1,
|
|
&clk_mcftmr2,
|
|
&clk_mcftmr3,
|
|
&clk_mcfuart0,
|
|
&clk_mcfuart1,
|
|
&clk_mcfqspi0,
|
|
&clk_fec0,
|
|
NULL
|
|
};
|
|
|
|
/***************************************************************************/
|
|
|
|
static void __init m5272_uarts_init(void)
|
|
{
|
|
u32 v;
|
|
|
|
/* Enable the output lines for the serial ports */
|
|
v = readl(MCFSIM_PBCNT);
|
|
v = (v & ~0x000000ff) | 0x00000055;
|
|
writel(v, MCFSIM_PBCNT);
|
|
|
|
v = readl(MCFSIM_PDCNT);
|
|
v = (v & ~0x000003fc) | 0x000002a8;
|
|
writel(v, MCFSIM_PDCNT);
|
|
}
|
|
|
|
/***************************************************************************/
|
|
|
|
static void m5272_cpu_reset(void)
|
|
{
|
|
local_irq_disable();
|
|
/* Set watchdog to reset, and enabled */
|
|
__raw_writew(0, MCFSIM_WIRR);
|
|
__raw_writew(1, MCFSIM_WRRR);
|
|
__raw_writew(0, MCFSIM_WCR);
|
|
for (;;)
|
|
/* wait for watchdog to timeout */;
|
|
}
|
|
|
|
/***************************************************************************/
|
|
|
|
void __init config_BSP(char *commandp, int size)
|
|
{
|
|
#if defined (CONFIG_MOD5272)
|
|
/* Set base of device vectors to be 64 */
|
|
writeb(0x40, MCFSIM_PIVR);
|
|
#endif
|
|
|
|
#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;
|
|
mach_sched_init = hw_timer_init;
|
|
}
|
|
|
|
/***************************************************************************/
|
|
|
|
/*
|
|
* Some 5272 based boards have the FEC ethernet directly connected to
|
|
* an ethernet switch. In this case we need to use the fixed phy type,
|
|
* and we need to declare it early in boot.
|
|
*/
|
|
static struct fixed_phy_status nettel_fixed_phy_status __initdata = {
|
|
.link = 1,
|
|
.speed = 100,
|
|
.duplex = 0,
|
|
};
|
|
|
|
/***************************************************************************/
|
|
|
|
static int __init init_BSP(void)
|
|
{
|
|
m5272_uarts_init();
|
|
fixed_phy_add(PHY_POLL, 0, &nettel_fixed_phy_status, -1);
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(init_BSP);
|
|
|
|
/***************************************************************************/
|