Add Mambo platform

By adding an explicit mambo platform we can do tricks like a fake
NVRAM, actually get RTC from mambo and generally be a bit better
in a simulator

Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>

4 files changed, 97 insertions, 1 deletions

diff --git a/asm/misc.S b/asm/misc.S
index 5e47c98..c8abdb9 100644
--- a/asm/misc.S
+++ b/asm/misc.S
@@ -74,3 +74,11 @@ mambo_sim_exit:
 	li	%r3, 31	/* aka. SimExitCode */
 	.long	0x000eaeb0
 	b	.
+
+.global mambo_get_time
+mambo_get_time:
+#define SIM_GET_TIME_CODE 70
+	li	%r3,SIM_GET_TIME_CODE
+	.long	0x000eaeb0
+	blr
+
diff --git a/platforms/Makefile.inc b/platforms/Makefile.inc
index a29d5f7..12c82c8 100644
--- a/platforms/Makefile.inc
+++ b/platforms/Makefile.inc
@@ -6,5 +6,6 @@ PLATFORMS = $(PLATDIR)/built-in.o
 include $(SRC)/$(PLATDIR)/ibm-fsp/Makefile.inc
 include $(SRC)/$(PLATDIR)/rhesus/Makefile.inc
 include $(SRC)/$(PLATDIR)/astbmc/Makefile.inc
+include $(SRC)/$(PLATDIR)/mambo/Makefile.inc
 
-$(PLATFORMS): $(IBM_FSP) $(RHESUS) $(ASTBMC)
+$(PLATFORMS): $(IBM_FSP) $(RHESUS) $(ASTBMC) $(MAMBO)
diff --git a/platforms/mambo/Makefile.inc b/platforms/mambo/Makefile.inc
new file mode 100644
index 0000000..2cc8613
--- /dev/null
+++ b/platforms/mambo/Makefile.inc
@@ -0,0 +1,6 @@
+SUBDIRS += $(PLATDIR)/mambo
+
+MAMBO_OBJS = mambo.o
+MAMBO = $(PLATDIR)/mambo/built-in.o
+$(MAMBO): $(MAMBO_OBJS:%=$(PLATDIR)/mambo/%)
+
diff --git a/platforms/mambo/mambo.c b/platforms/mambo/mambo.c
new file mode 100644
index 0000000..7d77aff
--- /dev/null
+++ b/platforms/mambo/mambo.c
@@ -0,0 +1,81 @@
+/* Copyright 2015 IBM Corp.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * 	http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ * implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+#include <skiboot.h>
+#include <device.h>
+#include <console.h>
+#include <chip.h>
+#include <opal-api.h>
+#include <opal-internal.h>
+#include <time-utils.h>
+#include <time.h>
+
+extern int64_t mambo_get_time(void);
+
+static bool mambo_probe(void)
+{
+	if (!dt_find_by_path(dt_root, "/mambo"))
+		return false;
+
+	return true;
+}
+
+static int64_t mambo_rtc_read(uint32_t *ymd, uint64_t *hmsm)
+{
+	int64_t mambo_time;
+	struct tm t;
+	time_t mt;
+
+	if (!ymd || !hmsm)
+		return OPAL_PARAMETER;
+
+	mambo_time = mambo_get_time();
+	mt = mambo_time >> 32;
+	gmtime_r(&mt, &t);
+	tm_to_datetime(&t, ymd, hmsm);
+
+	return OPAL_SUCCESS;
+}
+
+static void mambo_rtc_init(void)
+{
+	struct dt_node *np = dt_new(opal_node, "rtc");
+	dt_add_property_strings(np, "compatible", "ibm,opal-rtc");
+
+	opal_register(OPAL_RTC_READ, mambo_rtc_read, 2);
+}
+
+static void mambo_platform_init(void)
+{
+	force_dummy_console();
+	mambo_rtc_init();
+}
+
+static int64_t mambo_cec_power_down(uint64_t request __unused)
+{
+	if (chip_quirk(QUIRK_MAMBO_CALLOUTS))
+		mambo_sim_exit();
+
+	return OPAL_UNSUPPORTED;
+}
+
+DECLARE_PLATFORM(mambo) = {
+	.name			= "Mambo",
+	.probe			= mambo_probe,
+	.init		= mambo_platform_init,
+	.cec_power_down = mambo_cec_power_down,
+};