Commit | Line | Data |
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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 | 2 | /* |
f137e463 | 3 | * Copyright (C) 2000, 2001, 2002, 2003, 2004 Broadcom Corporation |
1da177e4 | 4 | * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) |
1da177e4 LT |
5 | */ |
6 | ||
7 | /* | |
8 | * Setup code for the SWARM board | |
9 | */ | |
10 | ||
1da177e4 LT |
11 | #include <linux/spinlock.h> |
12 | #include <linux/mm.h> | |
57c8a661 | 13 | #include <linux/memblock.h> |
1da177e4 LT |
14 | #include <linux/blkdev.h> |
15 | #include <linux/init.h> | |
16 | #include <linux/kernel.h> | |
894673ee | 17 | #include <linux/screen_info.h> |
1da177e4 LT |
18 | #include <linux/initrd.h> |
19 | ||
20 | #include <asm/irq.h> | |
21 | #include <asm/io.h> | |
22 | #include <asm/bootinfo.h> | |
23 | #include <asm/mipsregs.h> | |
24 | #include <asm/reboot.h> | |
25 | #include <asm/time.h> | |
26 | #include <asm/traps.h> | |
27 | #include <asm/sibyte/sb1250.h> | |
f137e463 AI |
28 | #if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) |
29 | #include <asm/sibyte/bcm1480_regs.h> | |
30 | #elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X) | |
1da177e4 | 31 | #include <asm/sibyte/sb1250_regs.h> |
f137e463 | 32 | #else |
03dbd2e0 | 33 | #error invalid SiByte board configuration |
f137e463 | 34 | #endif |
1da177e4 LT |
35 | #include <asm/sibyte/sb1250_genbus.h> |
36 | #include <asm/sibyte/board.h> | |
37 | ||
f137e463 AI |
38 | #if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) |
39 | extern void bcm1480_setup(void); | |
40 | #elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X) | |
1da177e4 | 41 | extern void sb1250_setup(void); |
f137e463 | 42 | #else |
03dbd2e0 | 43 | #error invalid SiByte board configuration |
f137e463 | 44 | #endif |
1da177e4 LT |
45 | |
46 | extern int xicor_probe(void); | |
f06e7aa4 | 47 | extern int xicor_set_time(time64_t); |
09adad17 | 48 | extern time64_t xicor_get_time(void); |
1da177e4 LT |
49 | |
50 | extern int m41t81_probe(void); | |
f06e7aa4 | 51 | extern int m41t81_set_time(time64_t); |
09adad17 | 52 | extern time64_t m41t81_get_time(void); |
1da177e4 LT |
53 | |
54 | const char *get_system_type(void) | |
55 | { | |
56 | return "SiByte " SIBYTE_BOARD_NAME; | |
57 | } | |
58 | ||
1da177e4 LT |
59 | int swarm_be_handler(struct pt_regs *regs, int is_fixup) |
60 | { | |
61 | if (!is_fixup && (regs->cp0_cause & 4)) { | |
62 | /* Data bus error - print PA */ | |
6aaf7786 | 63 | printk("DBE physical address: %010Lx\n", |
1da177e4 | 64 | __read_64bit_c0_register($26, 1)); |
1da177e4 | 65 | } |
635c9907 | 66 | return is_fixup ? MIPS_BE_FIXUP : MIPS_BE_FATAL; |
1da177e4 LT |
67 | } |
68 | ||
4b550488 RB |
69 | enum swarm_rtc_type { |
70 | RTC_NONE, | |
71 | RTC_XICOR, | |
2b3e5023 | 72 | RTC_M41T81, |
4b550488 RB |
73 | }; |
74 | ||
75 | enum swarm_rtc_type swarm_rtc_type; | |
76 | ||
09adad17 | 77 | void read_persistent_clock64(struct timespec64 *ts) |
4b550488 | 78 | { |
09adad17 | 79 | time64_t sec; |
d4f587c6 | 80 | |
4b550488 RB |
81 | switch (swarm_rtc_type) { |
82 | case RTC_XICOR: | |
d4f587c6 MS |
83 | sec = xicor_get_time(); |
84 | break; | |
4b550488 | 85 | |
2b3e5023 | 86 | case RTC_M41T81: |
d4f587c6 MS |
87 | sec = m41t81_get_time(); |
88 | break; | |
4b550488 RB |
89 | |
90 | case RTC_NONE: | |
91 | default: | |
09adad17 | 92 | sec = mktime64(2000, 1, 1, 0, 0, 0); |
d4f587c6 | 93 | break; |
4b550488 | 94 | } |
d4f587c6 | 95 | ts->tv_sec = sec; |
a648e811 | 96 | ts->tv_nsec = 0; |
4b550488 RB |
97 | } |
98 | ||
f06e7aa4 | 99 | int update_persistent_clock64(struct timespec64 now) |
4b550488 | 100 | { |
f06e7aa4 BW |
101 | time64_t sec = now.tv_sec; |
102 | ||
4b550488 RB |
103 | switch (swarm_rtc_type) { |
104 | case RTC_XICOR: | |
105 | return xicor_set_time(sec); | |
106 | ||
2b3e5023 | 107 | case RTC_M41T81: |
4b550488 RB |
108 | return m41t81_set_time(sec); |
109 | ||
110 | case RTC_NONE: | |
111 | default: | |
112 | return -1; | |
113 | } | |
114 | } | |
115 | ||
2925aba4 | 116 | void __init plat_mem_setup(void) |
1da177e4 | 117 | { |
f137e463 AI |
118 | #if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) |
119 | bcm1480_setup(); | |
120 | #elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X) | |
1da177e4 | 121 | sb1250_setup(); |
f137e463 | 122 | #else |
03dbd2e0 | 123 | #error invalid SiByte board configuration |
f137e463 | 124 | #endif |
1da177e4 | 125 | |
1da177e4 LT |
126 | board_be_handler = swarm_be_handler; |
127 | ||
4b550488 RB |
128 | if (xicor_probe()) |
129 | swarm_rtc_type = RTC_XICOR; | |
130 | if (m41t81_probe()) | |
2b3e5023 | 131 | swarm_rtc_type = RTC_M41T81; |
1da177e4 | 132 | |
1da177e4 LT |
133 | #ifdef CONFIG_VT |
134 | screen_info = (struct screen_info) { | |
b20947aa SAS |
135 | .orig_video_page = 52, |
136 | .orig_video_mode = 3, | |
137 | .orig_video_cols = 80, | |
138 | .flags = 12, | |
139 | .orig_video_ega_bx = 3, | |
140 | .orig_video_lines = 25, | |
141 | .orig_video_isVGA = 0x22, | |
142 | .orig_video_points = 16, | |
1da177e4 LT |
143 | }; |
144 | /* XXXKW for CFE, get lines/cols from environment */ | |
145 | #endif | |
1da177e4 LT |
146 | } |
147 | ||
1da177e4 LT |
148 | #ifdef LEDS_PHYS |
149 | ||
150 | #ifdef CONFIG_SIBYTE_CARMEL | |
151 | /* XXXKW need to detect Monterey/LittleSur/etc */ | |
152 | #undef LEDS_PHYS | |
153 | #define LEDS_PHYS MLEDS_PHYS | |
154 | #endif | |
155 | ||
1da177e4 LT |
156 | void setleds(char *str) |
157 | { | |
8fb303c7 | 158 | void *reg; |
1da177e4 | 159 | int i; |
8fb303c7 | 160 | |
1da177e4 | 161 | for (i = 0; i < 4; i++) { |
8fb303c7 RB |
162 | reg = IOADDR(LEDS_PHYS) + 0x20 + ((3 - i) << 3); |
163 | ||
164 | if (!str[i]) | |
165 | writeb(' ', reg); | |
166 | else | |
167 | writeb(str[i], reg); | |
1da177e4 LT |
168 | } |
169 | } | |
8fb303c7 RB |
170 | |
171 | #endif /* LEDS_PHYS */ |