86 lines
1.7 KiB
C
86 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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*
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* arch/xtensa/platform-iss/setup.c
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*
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* Platform specific initialization.
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*
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* Authors: Chris Zankel <chris@zankel.net>
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* Joe Taylor <joe@tensilica.com>
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*
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* Copyright 2001 - 2005 Tensilica Inc.
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* Copyright 2017 Cadence Design Systems Inc.
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/notifier.h>
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#include <linux/panic_notifier.h>
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#include <linux/printk.h>
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#include <linux/string.h>
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#include <asm/platform.h>
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#include <asm/setup.h>
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#include <platform/simcall.h>
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void platform_halt(void)
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{
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pr_info(" ** Called platform_halt() **\n");
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simc_exit(0);
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}
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void platform_power_off(void)
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{
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pr_info(" ** Called platform_power_off() **\n");
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simc_exit(0);
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}
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void platform_restart(void)
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{
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/* Flush and reset the mmu, simulate a processor reset, and
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* jump to the reset vector. */
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cpu_reset();
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/* control never gets here */
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}
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static int
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iss_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
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{
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simc_exit(1);
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return NOTIFY_DONE;
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}
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static struct notifier_block iss_panic_block = {
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.notifier_call = iss_panic_event,
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};
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void __init platform_setup(char **p_cmdline)
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{
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static void *argv[COMMAND_LINE_SIZE / sizeof(void *)] __initdata;
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static char cmdline[COMMAND_LINE_SIZE] __initdata;
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int argc = simc_argc();
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int argv_size = simc_argv_size();
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if (argc > 1) {
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if (argv_size > sizeof(argv)) {
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pr_err("%s: command line too long: argv_size = %d\n",
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__func__, argv_size);
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} else {
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int i;
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cmdline[0] = 0;
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simc_argv((void *)argv);
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for (i = 1; i < argc; ++i) {
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if (i > 1)
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strcat(cmdline, " ");
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strcat(cmdline, argv[i]);
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}
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*p_cmdline = cmdline;
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}
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}
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atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block);
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}
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