1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
/*
* arch/mips/emma2rh/markeins/setup.c
* This file is setup for EMMA2RH Mark-eins.
*
* Copyright (C) NEC Electronics Corporation 2004-2006
*
* This file is based on the arch/mips/ddb5xxx/ddb5477/setup.c.
*
* Copyright 2001 MontaVista Software Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/initrd.h>
#include <linux/irq.h>
#include <linux/ide.h>
#include <linux/ioport.h>
#include <linux/param.h> /* for HZ */
#include <linux/root_dev.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <asm/cpu.h>
#include <asm/bootinfo.h>
#include <asm/addrspace.h>
#include <asm/time.h>
#include <asm/bcache.h>
#include <asm/irq.h>
#include <asm/reboot.h>
#include <asm/gdb-stub.h>
#include <asm/traps.h>
#include <asm/debug.h>
#include <asm/emma2rh/emma2rh.h>
#define USE_CPU_COUNTER_TIMER /* whether we use cpu counter */
extern void markeins_led(const char *);
static int bus_frequency = 0;
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)
{
printk("EMMA2RH Mark-eins halted. Please turn off the power.\n");
markeins_led("poweroff.");
while (1) ;
}
static unsigned long 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 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 void inline __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;
/* Reboot on panic */
panic_timeout = 180;
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");
}
|
