Linux 4.18.10
[linux/fpc-iii.git] / arch / xtensa / platforms / iss / setup.c
blob58709e89a8ed1f41ed7acaad204d4d91e973386a
1 /*
3 * arch/xtensa/platform-iss/setup.c
5 * Platform specific initialization.
7 * Authors: Chris Zankel <chris@zankel.net>
8 * Joe Taylor <joe@tensilica.com>
10 * Copyright 2001 - 2005 Tensilica Inc.
11 * Copyright 2017 Cadence Design Systems Inc.
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.
19 #include <linux/bootmem.h>
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>
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>
34 #include <asm/platform.h>
35 #include <asm/bootparam.h>
36 #include <asm/setup.h>
38 #include <platform/simcall.h>
41 void __init platform_init(bp_tag_t* bootparam)
45 void platform_halt(void)
47 pr_info(" ** Called platform_halt() **\n");
48 simc_exit(0);
51 void platform_power_off(void)
53 pr_info(" ** Called platform_power_off() **\n");
54 simc_exit(0);
56 void platform_restart(void)
58 /* Flush and reset the mmu, simulate a processor reset, and
59 * jump to the reset vector. */
60 cpu_reset();
61 /* control never gets here */
64 void platform_heartbeat(void)
68 static int
69 iss_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
71 simc_exit(1);
72 return NOTIFY_DONE;
75 static struct notifier_block iss_panic_block = {
76 .notifier_call = iss_panic_event,
79 void __init platform_setup(char **p_cmdline)
81 static void *argv[COMMAND_LINE_SIZE / sizeof(void *)] __initdata;
82 static char cmdline[COMMAND_LINE_SIZE] __initdata;
83 int argc = simc_argc();
84 int argv_size = simc_argv_size();
86 if (argc > 1) {
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;
93 cmdline[0] = 0;
94 simc_argv((void *)argv);
96 for (i = 1; i < argc; ++i) {
97 if (i > 1)
98 strcat(cmdline, " ");
99 strcat(cmdline, argv[i]);
101 *p_cmdline = cmdline;
105 atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block);