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/gdb-stub.h>
45 #include <asm/traps.h>
46 #include <asm/debug.h>
48 #include <asm/emma2rh/emma2rh.h>
50 #define USE_CPU_COUNTER_TIMER /* whether we use cpu counter */
52 extern void markeins_led(const char *);
54 static int bus_frequency = 0;
56 static void markeins_machine_restart(char *command)
58 static void (*back_to_prom) (void) = (void (*)(void))0xbfc00000;
60 printk("cannot EMMA2RH Mark-eins restart.\n");
61 markeins_led("restart.");
65 static void markeins_machine_halt(void)
67 printk("EMMA2RH Mark-eins halted.\n");
68 markeins_led("halted.");
72 static void markeins_machine_power_off(void)
74 printk("EMMA2RH Mark-eins halted. Please turn off the power.\n");
75 markeins_led("poweroff.");
79 static unsigned long clock[4] = { 166500000, 187312500, 199800000, 210600000 };
81 static unsigned int __init detect_bus_frequency(unsigned long rtc_base)
85 /* detect from boot strap */
86 reg = emma2rh_in32(EMMA2RH_BHIF_STRAP_0);
87 reg = (reg >> 4) & 0x3;
91 void __init plat_time_init(void)
94 if (bus_frequency == 0)
95 bus_frequency = detect_bus_frequency(0);
97 reg = emma2rh_in32(EMMA2RH_BHIF_STRAP_0);
99 reg = (reg >> 6) & 0x3;
101 reg = emma2rh_in32(EMMA2RH_BHIF_MAIN_CTRL);
102 reg = (reg >> 4) & 0x3;
104 mips_hpt_frequency = (bus_frequency * (4 + reg)) / 4 / 2;
107 static void markeins_board_init(void);
108 extern void markeins_irq_setup(void);
110 static void inline __init markeins_sio_setup(void)
114 void __init plat_mem_setup(void)
116 /* initialize board - we don't trust the loader */
117 markeins_board_init();
119 set_io_port_base(KSEG1ADDR(EMMA2RH_PCI_IO_BASE));
121 _machine_restart = markeins_machine_restart;
122 _machine_halt = markeins_machine_halt;
123 pm_power_off = markeins_machine_power_off;
125 /* setup resource limits */
126 ioport_resource.start = EMMA2RH_PCI_IO_BASE;
127 ioport_resource.end = EMMA2RH_PCI_IO_BASE + EMMA2RH_PCI_IO_SIZE - 1;
128 iomem_resource.start = EMMA2RH_IO_BASE;
129 iomem_resource.end = EMMA2RH_ROM_BASE - 1;
131 /* Reboot on panic */
134 markeins_sio_setup();
137 static void __init markeins_board_init(void)
141 val = emma2rh_in32(EMMA2RH_PBRD_INT_EN); /* open serial interrupts. */
142 emma2rh_out32(EMMA2RH_PBRD_INT_EN, val | 0xaa);
143 val = emma2rh_in32(EMMA2RH_PBRD_CLKSEL); /* set serial clocks. */
144 emma2rh_out32(EMMA2RH_PBRD_CLKSEL, val | 0x5); /* 18MHz */
145 emma2rh_out32(EMMA2RH_PCI_CONTROL, 0);
147 markeins_led("MVL E2RH");