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/*
* m528x.c -- platform support for ColdFire 528x based boards
*
* Sub-architcture dependent initialization code for the Freescale
* 5280, 5281 and 5282 CPUs.
*
* Copyright (C) 1999-2003, Greg Ungerer (gerg@snapgear.com)
* Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com)
*/
/***************************************************************************/
#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/mcfuart.h>
#include <asm/mcfclk.h>
/***************************************************************************/
DEFINE_CLK(pll, "pll.0", MCF_CLK);
DEFINE_CLK(sys, "sys.0", MCF_BUSCLK);
DEFINE_CLK(mcfpit0, "mcfpit.0", MCF_CLK);
DEFINE_CLK(mcfpit1, "mcfpit.1", MCF_CLK);
DEFINE_CLK(mcfpit2, "mcfpit.2", MCF_CLK);
DEFINE_CLK(mcfpit3, "mcfpit.3", MCF_CLK);
DEFINE_CLK(mcfuart0, "mcfuart.0", MCF_BUSCLK);
DEFINE_CLK(mcfuart1, "mcfuart.1", MCF_BUSCLK);
DEFINE_CLK(mcfuart2, "mcfuart.2", 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_mcfpit0,
&clk_mcfpit1,
&clk_mcfpit2,
&clk_mcfpit3,
&clk_mcfuart0,
&clk_mcfuart1,
&clk_mcfuart2,
&clk_mcfqspi0,
&clk_fec0,
NULL
};
/***************************************************************************/
static void __init m528x_qspi_init(void)
{
#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
/* setup Port QS for QSPI with gpio CS control */
__raw_writeb(0x07, MCFGPIO_PQSPAR);
#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */
}
/***************************************************************************/
static void __init m528x_uarts_init(void)
{
u8 port;
/* make sure PUAPAR is set for UART0 and UART1 */
port = readb(MCFGPIO_PUAPAR);
port |= 0x03 | (0x03 << 2);
writeb(port, MCFGPIO_PUAPAR);
}
/***************************************************************************/
static void __init m528x_fec_init(void)
{
u16 v16;
/* Set multi-function pins to ethernet mode for fec0 */
v16 = readw(MCFGPIO_PASPAR);
writew(v16 | 0xf00, MCFGPIO_PASPAR);
writeb(0xc0, MCFGPIO_PEHLPAR);
}
/***************************************************************************/
#ifdef CONFIG_WILDFIRE
void wildfire_halt(void)
{
writeb(0, 0x30000007);
writeb(0x2, 0x30000007);
}
#endif
#ifdef CONFIG_WILDFIREMOD
void wildfiremod_halt(void)
{
printk(KERN_INFO "WildFireMod hibernating...\n");
/* Set portE.5 to Digital IO */
MCF5282_GPIO_PEPAR &= ~(1 << (5 * 2));
/* Make portE.5 an output */
MCF5282_GPIO_DDRE |= (1 << 5);
/* Now toggle portE.5 from low to high */
MCF5282_GPIO_PORTE &= ~(1 << 5);
MCF5282_GPIO_PORTE |= (1 << 5);
printk(KERN_EMERG "Failed to hibernate. Halting!\n");
}
#endif
void __init config_BSP(char *commandp, int size)
{
#ifdef CONFIG_WILDFIRE
mach_halt = wildfire_halt;
#endif
#ifdef CONFIG_WILDFIREMOD
mach_halt = wildfiremod_halt;
#endif
mach_sched_init = hw_timer_init;
m528x_uarts_init();
m528x_fec_init();
m528x_qspi_init();
}
/***************************************************************************/
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