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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-19 15:53:02 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-19 15:53:02 -0800
commit989b0b930218661b504bbb056b309e2c7bcdfb86 (patch)
treedea722310d814fff27b02c0e00d8243252d74be4 /arch/xtensa/platforms/iss/setup.c
parente03f1a842287480aa03732612148c0d333baca61 (diff)
parent42086cec3263b8c015ca3faa01e8190f0e3ff445 (diff)
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/czankel/xtensa-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/czankel/xtensa-2.6: (29 commits) [XTENSA] Allow debugger to modify the WINDOWBASE register. [XTENSA] Fix makefile to work with binutils-2.18. [XTENSA] Fix register corruption for certain processor configurations [XTENSA] Fix cache flush macro for D$/I$ aliasing/non-aliasing [XTENSA] Exclude thread-global registers from the xtregs structures. [XTENSA] Add support for the sa_restorer function [XTENSA] Add support for configurable registers and coprocessors [XTENSA] Clean up stat structs. [XTENSA] Use preprocessor to generate the linker script for the ELF boot image [XTENSA] Add missing RELOCATE_ENTRY for debug vector [XTENSA] Add volatile keyword to asm statements accessing counter registers [XTENSA] Remove unused code [XTENSA] Fix modules for non-exec processor configurations [XTENSA] Add missing cast in elf.h ELF_CORE_COPY_REGS() [XTENSA] Fix comments regarding the number of frames to save [XTENSA] Add missing a2 register restore in register spill routine [XTENSA] adjust boot linker script start addresses [XTENSA] Remove oldmask from sigcontext and fix register flush [XTENSA] Clean up elf-gregset. [XTENSA] Fix icache flush for cache aliasing ...
Diffstat (limited to 'arch/xtensa/platforms/iss/setup.c')
-rw-r--r--arch/xtensa/platforms/iss/setup.c110
1 files changed, 110 insertions, 0 deletions
diff --git a/arch/xtensa/platforms/iss/setup.c b/arch/xtensa/platforms/iss/setup.c
new file mode 100644
index 00000000000..f60c8cf6dfb
--- /dev/null
+++ b/arch/xtensa/platforms/iss/setup.c
@@ -0,0 +1,110 @@
+/*
+ *
+ * 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.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/reboot.h>
+#include <linux/kdev_t.h>
+#include <linux/types.h>
+#include <linux/major.h>
+#include <linux/blkdev.h>
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/stringify.h>
+#include <linux/notifier.h>
+
+#include <asm/platform.h>
+#include <asm/bootparam.h>
+
+
+void __init platform_init(bp_tag_t* bootparam)
+{
+
+}
+
+void platform_halt(void)
+{
+ printk (" ** Called platform_halt(), looping forever! **\n");
+ while (1);
+}
+
+void platform_power_off(void)
+{
+ printk (" ** Called platform_power_off(), looping forever! **\n");
+ while (1);
+}
+void platform_restart(void)
+{
+ /* Flush and reset the mmu, simulate a processor reset, and
+ * jump to the reset vector. */
+
+ __asm__ __volatile__("movi a2, 15\n\t"
+ "wsr a2, " __stringify(ICOUNTLEVEL) "\n\t"
+ "movi a2, 0\n\t"
+ "wsr a2, " __stringify(ICOUNT) "\n\t"
+ "wsr a2, " __stringify(IBREAKENABLE) "\n\t"
+ "wsr a2, " __stringify(LCOUNT) "\n\t"
+ "movi a2, 0x1f\n\t"
+ "wsr a2, " __stringify(PS) "\n\t"
+ "isync\n\t"
+ "jx %0\n\t"
+ :
+ : "a" (XCHAL_RESET_VECTOR_VADDR)
+ : "a2");
+
+ /* control never gets here */
+}
+
+extern void iss_net_poll(void);
+
+const char twirl[]="|/-\\|/-\\";
+
+void platform_heartbeat(void)
+{
+#if 0
+ static int i = 0, j = 0;
+
+ if (--i < 0) {
+ i = 99;
+ printk("\r%c\r", twirl[j++]);
+ if (j == 8)
+ j = 0;
+ }
+#endif
+}
+
+
+
+static int
+iss_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
+{
+ __asm__ __volatile__("movi a2, -1; simcall\n");
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block iss_panic_block = {
+ iss_panic_event,
+ NULL,
+ 0
+};
+
+void __init platform_setup(char **p_cmdline)
+{
+ atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block);
+}