tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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#include <linux/serial.h>
31#include <linux/serial_core.h>
32
33#include <asm/time.h>
34#include <asm/cpu.h>
35#include <asm/bootinfo.h>
36#include <asm/irq.h>
37#include <asm/lasat/lasat.h>
38#include <asm/lasat/serial.h>
39
40#ifdef CONFIG_PICVUE
41#include <linux/notifier.h>
42#endif
43
44#include "ds1603.h"
45#include <asm/lasat/ds1603.h>
46#include <asm/lasat/picvue.h>
47#include <asm/lasat/eeprom.h>
48
49#include "prom.h"
50
51int lasat_command_line = 0;
52void lasatint_init(void);
53
54extern void lasat_reboot_setup(void);
55extern void pcisetup(void);
56extern void edhac_init(void *, void *, void *);
57extern void addrflt_init(void);
58
59struct lasat_misc lasat_misc_info[N_MACHTYPES] = {
60 {(void *)KSEG1ADDR(0x1c840000), (void *)KSEG1ADDR(0x1c800000), 2},
61 {(void *)KSEG1ADDR(0x11080000), (void *)KSEG1ADDR(0x11000000), 6}
62};
63
64struct lasat_misc *lasat_misc = NULL;
65
66#ifdef CONFIG_DS1603
67static struct ds_defs ds_defs[N_MACHTYPES] = {
68 { (void *)DS1603_REG_100, (void *)DS1603_REG_100,
69 DS1603_RST_100, DS1603_CLK_100, DS1603_DATA_100,
70 DS1603_DATA_SHIFT_100, 0, 0 },
71 { (void *)DS1603_REG_200, (void *)DS1603_DATA_REG_200,
72 DS1603_RST_200, DS1603_CLK_200, DS1603_DATA_200,
73 DS1603_DATA_READ_SHIFT_200, 1, 2000 }
74};
75#endif
76
77#ifdef CONFIG_PICVUE
78#include "picvue.h"
79static struct pvc_defs pvc_defs[N_MACHTYPES] = {
80 { (void *)PVC_REG_100, PVC_DATA_SHIFT_100, PVC_DATA_M_100,
81 PVC_E_100, PVC_RW_100, PVC_RS_100 },
82 { (void *)PVC_REG_200, PVC_DATA_SHIFT_200, PVC_DATA_M_200,
83 PVC_E_200, PVC_RW_200, PVC_RS_200 }
84};
85#endif
86
87static int lasat_panic_display(struct notifier_block *this,
88 unsigned long event, void *ptr)
89{
90#ifdef CONFIG_PICVUE
91 unsigned char *string = ptr;
92 if (string == NULL)
93 string = "Kernel Panic";
94 pvc_dump_string(string);
95#endif
96 return NOTIFY_DONE;
97}
98
99static int lasat_panic_prom_monitor(struct notifier_block *this,
100 unsigned long event, void *ptr)
101{
102 prom_monitor();
103 return NOTIFY_DONE;
104}
105
106static struct notifier_block lasat_panic_block[] =
107{
108 { lasat_panic_display, NULL, INT_MAX },
109 { lasat_panic_prom_monitor, NULL, INT_MIN }
110};
111
112static void lasat_time_init(void)
113{
114 mips_hpt_frequency = lasat_board_info.li_cpu_hz / 2;
115}
116
117void __init plat_timer_setup(struct irqaction *irq)
118{
119 change_c0_status(ST0_IM, IE_IRQ0 | IE_IRQ5);
120}
121
122#define DYNAMIC_SERIAL_INIT
123#ifdef DYNAMIC_SERIAL_INIT
124void __init serial_init(void)
125{
126#ifdef CONFIG_SERIAL_8250
127 struct uart_port s;
128
129 memset(&s, 0, sizeof(s));
130
131 s.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
132 s.iotype = UPIO_MEM;
133
134 if (mips_machtype == MACH_LASAT_100) {
135 s.uartclk = LASAT_BASE_BAUD_100 * 16;
136 s.irq = LASATINT_UART_100;
137 s.regshift = LASAT_UART_REGS_SHIFT_100;
138 s.membase = (char *)KSEG1ADDR(LASAT_UART_REGS_BASE_100);
139 } else {
140 s.uartclk = LASAT_BASE_BAUD_200 * 16;
141 s.irq = LASATINT_UART_200;
142 s.regshift = LASAT_UART_REGS_SHIFT_200;
143 s.membase = (char *)KSEG1ADDR(LASAT_UART_REGS_BASE_200);
144 }
145
146 if (early_serial_setup(&s) != 0)
147 printk(KERN_ERR "Serial setup failed!\n");
148#endif
149}
150#endif
151
152void __init plat_mem_setup(void)
153{
154 int i;
155 lasat_misc = &lasat_misc_info[mips_machtype];
156#ifdef CONFIG_PICVUE
157 picvue = &pvc_defs[mips_machtype];
158#endif
159
160 /* Set up panic notifier */
161 for (i = 0; i < sizeof(lasat_panic_block) / sizeof(struct notifier_block); i++)
162 atomic_notifier_chain_register(&panic_notifier_list,
163 &lasat_panic_block[i]);
164
165 lasat_reboot_setup();
166
167 board_time_init = lasat_time_init;
168
169#ifdef CONFIG_DS1603
170 ds1603 = &ds_defs[mips_machtype];
171 rtc_mips_get_time = ds1603_read;
172 rtc_mips_set_time = ds1603_set;
173#endif
174
175#ifdef DYNAMIC_SERIAL_INIT
176 serial_init();
177#endif
178 /* Switch from prom exception handler to normal mode */
179 change_c0_status(ST0_BEV,0);
180
181 pr_info("Lasat specific initialization complete\n");
182}