Introduce a dedicated file for MPC85xx-specific routines. Move cpu_reset()

there, as it's not relevant to Book-E specification, but is an implementation
detail, directly dependent on the given SoC version.

1 files changed, 59 insertions, 0 deletions

diff --git a/sys/powerpc/mpc85xx/mpc85xx.c b/sys/powerpc/mpc85xx/mpc85xx.c
new file mode 100644
index 0000000..d5831ee
--- /dev/null
+++ b/sys/powerpc/mpc85xx/mpc85xx.c
@@ -0,0 +1,59 @@
+/*-
+ * Copyright (C) 2008 Semihalf, Rafal Jaworowski
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the author nor the names of contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+
+#include <machine/cpu.h>
+#include <machine/cpufunc.h>
+#include <machine/spr.h>
+
+/*
+ * MPC85xx system specific routines
+ */
+
+void
+cpu_reset()
+{
+
+	/* Clear DBCR0, disables debug interrupts and events. */
+	mtspr(SPR_DBCR0, 0);
+	__asm volatile("isync");
+
+	/* Enable Debug Interrupts in MSR. */
+	mtmsr(mfmsr() | PSL_DE);
+
+	/* Enable debug interrupts and issue reset. */
+	mtspr(SPR_DBCR0, mfspr(SPR_DBCR0) | DBCR0_IDM | DBCR0_RST_SYSTEM);
+	printf("Reset failed...\n");
+	while (1);
+}