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1 /*
2  * Carsten Langgaard, carstenl@mips.com
3  * Copyright (C) 1999 MIPS Technologies, Inc.  All rights reserved.
4  *
5  * Thomas Horsten <thh@lasat.com>
6  * Copyright (C) 2000 LASAT Networks A/S.
7  *
8  * Brian Murphy <brian@murphy.dk>
9  *
10  *  This program is free software; you can distribute it and/or modify it
11  *  under the terms of the GNU General Public License (Version 2) as
12  *  published by the Free Software Foundation.
13  *
14  *  This program is distributed in the hope it will be useful, but WITHOUT
15  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
17  *  for more details.
18  *
19  *  You should have received a copy of the GNU General Public License along
20  *  with this program; if not, write to the Free Software Foundation, Inc.,
21  *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
22  *
23  * Lasat specific setup.
24  */
25 #include <linux/init.h>
26 #include <linux/sched.h>
27 #include <linux/pci.h>
28 #include <linux/interrupt.h>
29 #include <linux/tty.h>
30 
31 #include <asm/time.h>
32 #include <asm/cpu.h>
33 #include <asm/bootinfo.h>
34 #include <asm/irq.h>
35 #include <asm/lasat/lasat.h>
36 #include <asm/lasat/serial.h>
37 
38 #ifdef CONFIG_PICVUE
39 #include <linux/notifier.h>
40 #endif
41 
42 #include "ds1603.h"
43 #include <asm/lasat/ds1603.h>
44 #include <asm/lasat/picvue.h>
45 #include <asm/lasat/eeprom.h>
46 
47 #include "prom.h"
48 
49 int lasat_command_line;
50 void lasatint_init(void);
51 
52 extern void lasat_reboot_setup(void);
53 extern void pcisetup(void);
54 extern void edhac_init(void *, void *, void *);
55 extern void addrflt_init(void);
56 
57 struct lasat_misc lasat_misc_info[N_MACHTYPES] = {
58 	{
59 		.reset_reg	= (void *)KSEG1ADDR(0x1c840000),
60 		.flash_wp_reg	= (void *)KSEG1ADDR(0x1c800000), 2
61 	}, {
62 		.reset_reg	= (void *)KSEG1ADDR(0x11080000),
63 		.flash_wp_reg	= (void *)KSEG1ADDR(0x11000000), 6
64 	}
65 };
66 
67 struct lasat_misc *lasat_misc;
68 
69 #ifdef CONFIG_DS1603
70 static struct ds_defs ds_defs[N_MACHTYPES] = {
71 	{ (void *)DS1603_REG_100, (void *)DS1603_REG_100,
72 		DS1603_RST_100, DS1603_CLK_100, DS1603_DATA_100,
73 		DS1603_DATA_SHIFT_100, 0, 0 },
74 	{ (void *)DS1603_REG_200, (void *)DS1603_DATA_REG_200,
75 		DS1603_RST_200, DS1603_CLK_200, DS1603_DATA_200,
76 		DS1603_DATA_READ_SHIFT_200, 1, 2000 }
77 };
78 #endif
79 
80 #ifdef CONFIG_PICVUE
81 #include "picvue.h"
82 static struct pvc_defs pvc_defs[N_MACHTYPES] = {
83 	{ (void *)PVC_REG_100, PVC_DATA_SHIFT_100, PVC_DATA_M_100,
84 		PVC_E_100, PVC_RW_100, PVC_RS_100 },
85 	{ (void *)PVC_REG_200, PVC_DATA_SHIFT_200, PVC_DATA_M_200,
86 		PVC_E_200, PVC_RW_200, PVC_RS_200 }
87 };
88 #endif
89 
lasat_panic_display(struct notifier_block * this,unsigned long event,void * ptr)90 static int lasat_panic_display(struct notifier_block *this,
91 			     unsigned long event, void *ptr)
92 {
93 #ifdef CONFIG_PICVUE
94 	unsigned char *string = ptr;
95 	if (string == NULL)
96 		string = "Kernel Panic";
97 	pvc_dump_string(string);
98 #endif
99 	return NOTIFY_DONE;
100 }
101 
lasat_panic_prom_monitor(struct notifier_block * this,unsigned long event,void * ptr)102 static int lasat_panic_prom_monitor(struct notifier_block *this,
103 			     unsigned long event, void *ptr)
104 {
105 	prom_monitor();
106 	return NOTIFY_DONE;
107 }
108 
109 static struct notifier_block lasat_panic_block[] =
110 {
111 	{
112 		.notifier_call	= lasat_panic_display,
113 		.priority	= INT_MAX
114 	}, {
115 		.notifier_call	= lasat_panic_prom_monitor,
116 		.priority	= INT_MIN
117 	}
118 };
119 
plat_time_init(void)120 void __init plat_time_init(void)
121 {
122 	mips_hpt_frequency = lasat_board_info.li_cpu_hz / 2;
123 
124 	change_c0_status(ST0_IM, IE_IRQ0);
125 }
126 
plat_mem_setup(void)127 void __init plat_mem_setup(void)
128 {
129 	int i;
130 	int lasat_type = IS_LASAT_200() ? 1 : 0;
131 
132 	lasat_misc  = &lasat_misc_info[lasat_type];
133 #ifdef CONFIG_PICVUE
134 	picvue = &pvc_defs[lasat_type];
135 #endif
136 
137 	/* Set up panic notifier */
138 	for (i = 0; i < ARRAY_SIZE(lasat_panic_block); i++)
139 		atomic_notifier_chain_register(&panic_notifier_list,
140 				&lasat_panic_block[i]);
141 
142 	lasat_reboot_setup();
143 
144 #ifdef CONFIG_DS1603
145 	ds1603 = &ds_defs[lasat_type];
146 #endif
147 
148 #ifdef DYNAMIC_SERIAL_INIT
149 	serial_init();
150 #endif
151 
152 	pr_info("Lasat specific initialization complete\n");
153 }
154