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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/xtensa/platforms/iss/setup.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/xtensa/platforms/iss/setup.c')
-rw-r--r--arch/xtensa/platforms/iss/setup.c85
1 files changed, 85 insertions, 0 deletions
diff --git a/arch/xtensa/platforms/iss/setup.c b/arch/xtensa/platforms/iss/setup.c
new file mode 100644
index 000000000..d3433e1bb
--- /dev/null
+++ b/arch/xtensa/platforms/iss/setup.c
@@ -0,0 +1,85 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *
+ * arch/xtensa/platform-iss/setup.c
+ *
+ * Platform specific initialization.
+ *
+ * Authors: Chris Zankel <chris@zankel.net>
+ * Joe Taylor <joe@tensilica.com>
+ *
+ * Copyright 2001 - 2005 Tensilica Inc.
+ * Copyright 2017 Cadence Design Systems Inc.
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/notifier.h>
+#include <linux/panic_notifier.h>
+#include <linux/printk.h>
+#include <linux/string.h>
+
+#include <asm/platform.h>
+#include <asm/setup.h>
+
+#include <platform/simcall.h>
+
+
+void platform_halt(void)
+{
+ pr_info(" ** Called platform_halt() **\n");
+ simc_exit(0);
+}
+
+void platform_power_off(void)
+{
+ pr_info(" ** Called platform_power_off() **\n");
+ simc_exit(0);
+}
+
+void platform_restart(void)
+{
+ /* Flush and reset the mmu, simulate a processor reset, and
+ * jump to the reset vector. */
+ cpu_reset();
+ /* control never gets here */
+}
+
+static int
+iss_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
+{
+ simc_exit(1);
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block iss_panic_block = {
+ .notifier_call = iss_panic_event,
+};
+
+void __init platform_setup(char **p_cmdline)
+{
+ static void *argv[COMMAND_LINE_SIZE / sizeof(void *)] __initdata;
+ static char cmdline[COMMAND_LINE_SIZE] __initdata;
+ int argc = simc_argc();
+ int argv_size = simc_argv_size();
+
+ if (argc > 1) {
+ if (argv_size > sizeof(argv)) {
+ pr_err("%s: command line too long: argv_size = %d\n",
+ __func__, argv_size);
+ } else {
+ int i;
+
+ cmdline[0] = 0;
+ simc_argv((void *)argv);
+
+ for (i = 1; i < argc; ++i) {
+ if (i > 1)
+ strcat(cmdline, " ");
+ strcat(cmdline, argv[i]);
+ }
+ *p_cmdline = cmdline;
+ }
+ }
+
+ atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block);
+}