2 * arch/mips/emma2rh/markeins/setup.c
3 * This file is setup for EMMA2RH Mark-eins.
5 * Copyright (C) NEC Electronics Corporation 2004-2006
7 * This file is based on the arch/mips/ddb5xxx/ddb5477/setup.c.
9 * Copyright 2001 MontaVista Software Inc.
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include <linux/init.h>
26 #include <linux/kernel.h>
27 #include <linux/types.h>
28 #include <linux/initrd.h>
29 #include <linux/irq.h>
30 #include <linux/ide.h>
31 #include <linux/ioport.h>
32 #include <linux/param.h> /* for HZ */
33 #include <linux/root_dev.h>
34 #include <linux/serial.h>
35 #include <linux/serial_core.h>
38 #include <asm/bootinfo.h>
39 #include <asm/addrspace.h>
41 #include <asm/bcache.h>
43 #include <asm/reboot.h>
44 #include <asm/traps.h>
45 #include <asm/debug.h>
47 #include <asm/emma2rh/emma2rh.h>
49 #define USE_CPU_COUNTER_TIMER /* whether we use cpu counter */
51 extern void markeins_led(const char *);
53 static int bus_frequency = 0;
55 static void markeins_machine_restart(char *command)
57 static void (*back_to_prom) (void) = (void (*)(void))0xbfc00000;
59 printk("cannot EMMA2RH Mark-eins restart.\n");
60 markeins_led("restart.");
64 static void markeins_machine_halt(void)
66 printk("EMMA2RH Mark-eins halted.\n");
67 markeins_led("halted.");
71 static void markeins_machine_power_off(void)
73 printk("EMMA2RH Mark-eins halted. Please turn off the power.\n");
74 markeins_led("poweroff.");
78 static unsigned long __initdata emma2rh_clock[4] = {
79 166500000, 187312500, 199800000, 210600000
82 static unsigned int __init detect_bus_frequency(unsigned long rtc_base)
86 /* detect from boot strap */
87 reg = emma2rh_in32(EMMA2RH_BHIF_STRAP_0);
88 reg = (reg >> 4) & 0x3;
90 return emma2rh_clock[reg];
93 void __init plat_time_init(void)
96 if (bus_frequency == 0)
97 bus_frequency = detect_bus_frequency(0);
99 reg = emma2rh_in32(EMMA2RH_BHIF_STRAP_0);
100 if ((reg & 0x3) == 0)
101 reg = (reg >> 6) & 0x3;
103 reg = emma2rh_in32(EMMA2RH_BHIF_MAIN_CTRL);
104 reg = (reg >> 4) & 0x3;
106 mips_hpt_frequency = (bus_frequency * (4 + reg)) / 4 / 2;
109 static void markeins_board_init(void);
110 extern void markeins_irq_setup(void);
112 static void inline __init markeins_sio_setup(void)
116 void __init plat_mem_setup(void)
118 /* initialize board - we don't trust the loader */
119 markeins_board_init();
121 set_io_port_base(KSEG1ADDR(EMMA2RH_PCI_IO_BASE));
123 _machine_restart = markeins_machine_restart;
124 _machine_halt = markeins_machine_halt;
125 pm_power_off = markeins_machine_power_off;
127 /* setup resource limits */
128 ioport_resource.start = EMMA2RH_PCI_IO_BASE;
129 ioport_resource.end = EMMA2RH_PCI_IO_BASE + EMMA2RH_PCI_IO_SIZE - 1;
130 iomem_resource.start = EMMA2RH_IO_BASE;
131 iomem_resource.end = EMMA2RH_ROM_BASE - 1;
133 /* Reboot on panic */
136 markeins_sio_setup();
139 static void __init markeins_board_init(void)
143 val = emma2rh_in32(EMMA2RH_PBRD_INT_EN); /* open serial interrupts. */
144 emma2rh_out32(EMMA2RH_PBRD_INT_EN, val | 0xaa);
145 val = emma2rh_in32(EMMA2RH_PBRD_CLKSEL); /* set serial clocks. */
146 emma2rh_out32(EMMA2RH_PBRD_CLKSEL, val | 0x5); /* 18MHz */
147 emma2rh_out32(EMMA2RH_PCI_CONTROL, 0);
149 markeins_led("MVL E2RH");