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1 | /* |
2 | * | |
3 | * arch/xtensa/platform-iss/setup.c | |
4 | * | |
5 | * Platform specific initialization. | |
6 | * | |
7 | * Authors: Chris Zankel <chris@zankel.net> | |
8 | * Joe Taylor <joe@tensilica.com> | |
9 | * | |
10 | * Copyright 2001 - 2005 Tensilica Inc. | |
fbe22d28 | 11 | * Copyright 2017 Cadence Design Systems Inc. |
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12 | * |
13 | * This program is free software; you can redistribute it and/or modify it | |
14 | * under the terms of the GNU General Public License as published by the | |
15 | * Free Software Foundation; either version 2 of the License, or (at your | |
16 | * option) any later version. | |
17 | * | |
18 | */ | |
57c8a661 | 19 | #include <linux/memblock.h> |
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20 | #include <linux/stddef.h> |
21 | #include <linux/kernel.h> | |
22 | #include <linux/init.h> | |
23 | #include <linux/errno.h> | |
24 | #include <linux/reboot.h> | |
7282bee7 CZ |
25 | #include <linux/kdev_t.h> |
26 | #include <linux/types.h> | |
27 | #include <linux/major.h> | |
28 | #include <linux/blkdev.h> | |
29 | #include <linux/console.h> | |
30 | #include <linux/delay.h> | |
31 | #include <linux/stringify.h> | |
32 | #include <linux/notifier.h> | |
33 | ||
34 | #include <asm/platform.h> | |
35 | #include <asm/bootparam.h> | |
3ced9730 | 36 | #include <asm/setup.h> |
7282bee7 | 37 | |
feec273a MF |
38 | #include <platform/simcall.h> |
39 | ||
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40 | |
41 | void __init platform_init(bp_tag_t* bootparam) | |
42 | { | |
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43 | } |
44 | ||
45 | void platform_halt(void) | |
46 | { | |
23753171 | 47 | pr_info(" ** Called platform_halt() **\n"); |
feec273a | 48 | simc_exit(0); |
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49 | } |
50 | ||
51 | void platform_power_off(void) | |
52 | { | |
23753171 | 53 | pr_info(" ** Called platform_power_off() **\n"); |
feec273a | 54 | simc_exit(0); |
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55 | } |
56 | void platform_restart(void) | |
57 | { | |
58 | /* Flush and reset the mmu, simulate a processor reset, and | |
59 | * jump to the reset vector. */ | |
4f205687 | 60 | cpu_reset(); |
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61 | /* control never gets here */ |
62 | } | |
63 | ||
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64 | void platform_heartbeat(void) |
65 | { | |
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66 | } |
67 | ||
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68 | static int |
69 | iss_panic_event(struct notifier_block *this, unsigned long event, void *ptr) | |
70 | { | |
feec273a | 71 | simc_exit(1); |
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72 | return NOTIFY_DONE; |
73 | } | |
74 | ||
75 | static struct notifier_block iss_panic_block = { | |
3ced9730 | 76 | .notifier_call = iss_panic_event, |
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77 | }; |
78 | ||
79 | void __init platform_setup(char **p_cmdline) | |
80 | { | |
ef439d49 MF |
81 | static void *argv[COMMAND_LINE_SIZE / sizeof(void *)] __initdata; |
82 | static char cmdline[COMMAND_LINE_SIZE] __initdata; | |
fbe22d28 MF |
83 | int argc = simc_argc(); |
84 | int argv_size = simc_argv_size(); | |
85 | ||
86 | if (argc > 1) { | |
ef439d49 MF |
87 | if (argv_size > sizeof(argv)) { |
88 | pr_err("%s: command line too long: argv_size = %d\n", | |
89 | __func__, argv_size); | |
90 | } else { | |
91 | int i; | |
fbe22d28 | 92 | |
ef439d49 MF |
93 | cmdline[0] = 0; |
94 | simc_argv((void *)argv); | |
fbe22d28 | 95 | |
ef439d49 MF |
96 | for (i = 1; i < argc; ++i) { |
97 | if (i > 1) | |
98 | strcat(cmdline, " "); | |
99 | strcat(cmdline, argv[i]); | |
100 | } | |
101 | *p_cmdline = cmdline; | |
fbe22d28 | 102 | } |
fbe22d28 MF |
103 | } |
104 | ||
e041c683 | 105 | atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block); |
7282bee7 | 106 | } |