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Diffstat (limited to 'arch/cris/arch-v32/mach-fs/vcs_hook.c')
-rw-r--r--arch/cris/arch-v32/mach-fs/vcs_hook.c100
1 files changed, 100 insertions, 0 deletions
diff --git a/arch/cris/arch-v32/mach-fs/vcs_hook.c b/arch/cris/arch-v32/mach-fs/vcs_hook.c
new file mode 100644
index 00000000000..593b10f07ef
--- /dev/null
+++ b/arch/cris/arch-v32/mach-fs/vcs_hook.c
@@ -0,0 +1,100 @@
+/*
+ * Call simulator hook. This is the part running in the
+ * simulated program.
+ */
+
+#include "vcs_hook.h"
+#include <stdarg.h>
+#include <asm/arch-v32/hwregs/reg_map.h>
+#include <asm/arch-v32/hwregs/intr_vect_defs.h>
+
+#define HOOK_TRIG_ADDR 0xb7000000 /* hook cvlog model reg address */
+#define HOOK_MEM_BASE_ADDR 0xa0000000 /* csp4 (shared mem) base addr */
+
+#define HOOK_DATA(offset) ((unsigned *)HOOK_MEM_BASE_ADDR)[offset]
+#define VHOOK_DATA(offset) ((volatile unsigned *)HOOK_MEM_BASE_ADDR)[offset]
+#define HOOK_TRIG(funcid) \
+ do { \
+ *((unsigned *) HOOK_TRIG_ADDR) = funcid; \
+ } while (0)
+#define HOOK_DATA_BYTE(offset) ((unsigned char *)HOOK_MEM_BASE_ADDR)[offset]
+
+int hook_call(unsigned id, unsigned pcnt, ...)
+{
+ va_list ap;
+ unsigned i;
+ unsigned ret;
+#ifdef USING_SOS
+ PREEMPT_OFF_SAVE();
+#endif
+
+ /* pass parameters */
+ HOOK_DATA(0) = id;
+
+ /* Have to make hook_print_str a special case since we call with a
+ * parameter of byte type. Should perhaps be a separate
+ * hook_call. */
+
+ if (id == hook_print_str) {
+ int i;
+ char *str;
+
+ HOOK_DATA(1) = pcnt;
+
+ va_start(ap, pcnt);
+ str = (char *)va_arg(ap, unsigned);
+
+ for (i = 0; i != pcnt; i++)
+ HOOK_DATA_BYTE(8 + i) = str[i];
+
+ HOOK_DATA_BYTE(8 + i) = 0; /* null byte */
+ } else {
+ va_start(ap, pcnt);
+ for (i = 1; i <= pcnt; i++)
+ HOOK_DATA(i) = va_arg(ap, unsigned);
+ va_end(ap);
+ }
+
+ /* read from mem to make sure data has propagated to memory before
+ * trigging */
+ ret = *((volatile unsigned *)HOOK_MEM_BASE_ADDR);
+
+ /* trigger hook */
+ HOOK_TRIG(id);
+
+ /* wait for call to finish */
+ while (VHOOK_DATA(0) > 0) ;
+
+ /* extract return value */
+
+ ret = VHOOK_DATA(1);
+
+#ifdef USING_SOS
+ PREEMPT_RESTORE();
+#endif
+ return ret;
+}
+
+unsigned hook_buf(unsigned i)
+{
+ return (HOOK_DATA(i));
+}
+
+void print_str(const char *str)
+{
+ int i;
+ /* find null at end of string */
+ for (i = 1; str[i]; i++) ;
+ hook_call(hook_print_str, i, str);
+}
+
+void CPU_KICK_DOG(void)
+{
+ (void)hook_call(hook_kick_dog, 0);
+}
+
+void CPU_WATCHDOG_TIMEOUT(unsigned t)
+{
+ (void)hook_call(hook_dog_timeout, 1, t);
+}
+