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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) NEC Electronics Corporation 2004-2006
*
* This file is based on the arch/mips/ddb5xxx/ddb5477/setup.c.
*
* Copyright 2001 MontaVista Software Inc.
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <asm/time.h>
#include <asm/reboot.h>
#include <asm/emma/emma2rh.h>
#define USE_CPU_COUNTER_TIMER /* whether we use cpu counter */
extern void markeins_led(const char *);
static int bus_frequency;
static void markeins_machine_restart(char *command)
{
static void (*back_to_prom) (void) = (void (*)(void))0xbfc00000;
printk("cannot EMMA2RH Mark-eins restart.\n");
markeins_led("restart.");
back_to_prom();
}
static void markeins_machine_halt(void)
{
printk("EMMA2RH Mark-eins halted.\n");
markeins_led("halted.");
while (1) ;
}
static void markeins_machine_power_off(void)
{
markeins_led("poweroff.");
while (1) ;
}
static unsigned long __initdata emma2rh_clock[4] = {
166500000, 187312500, 199800000, 210600000
};
static unsigned int __init detect_bus_frequency(unsigned long rtc_base)
{
u32 reg;
/* detect from boot strap */
reg = emma2rh_in32(EMMA2RH_BHIF_STRAP_0);
reg = (reg >> 4) & 0x3;
return emma2rh_clock[reg];
}
void __init plat_time_init(void)
{
u32 reg;
if (bus_frequency == 0)
bus_frequency = detect_bus_frequency(0);
reg = emma2rh_in32(EMMA2RH_BHIF_STRAP_0);
if ((reg & 0x3) == 0)
reg = (reg >> 6) & 0x3;
else {
reg = emma2rh_in32(EMMA2RH_BHIF_MAIN_CTRL);
reg = (reg >> 4) & 0x3;
}
mips_hpt_frequency = (bus_frequency * (4 + reg)) / 4 / 2;
}
static void markeins_board_init(void);
extern void markeins_irq_setup(void);
static inline void __init markeins_sio_setup(void)
{
}
void __init plat_mem_setup(void)
{
/* initialize board - we don't trust the loader */
markeins_board_init();
set_io_port_base(KSEG1ADDR(EMMA2RH_PCI_IO_BASE));
_machine_restart = markeins_machine_restart;
_machine_halt = markeins_machine_halt;
pm_power_off = markeins_machine_power_off;
/* setup resource limits */
ioport_resource.start = EMMA2RH_PCI_IO_BASE;
ioport_resource.end = EMMA2RH_PCI_IO_BASE + EMMA2RH_PCI_IO_SIZE - 1;
iomem_resource.start = EMMA2RH_IO_BASE;
iomem_resource.end = EMMA2RH_ROM_BASE - 1;
markeins_sio_setup();
}
static void __init markeins_board_init(void)
{
u32 val;
val = emma2rh_in32(EMMA2RH_PBRD_INT_EN); /* open serial interrupts. */
emma2rh_out32(EMMA2RH_PBRD_INT_EN, val | 0xaa);
val = emma2rh_in32(EMMA2RH_PBRD_CLKSEL); /* set serial clocks. */
emma2rh_out32(EMMA2RH_PBRD_CLKSEL, val | 0x5); /* 18MHz */
emma2rh_out32(EMMA2RH_PCI_CONTROL, 0);
markeins_led("MVL E2RH");
}
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