@@ -7,8 +7,7 @@ ASTBMC_OBJS = pnor.o common.o slots.o \
witherspoon.o zaius.o romulus.o p9dsu.o \
vesnin.o nicole.o mihawk.o mowgli.o \
talos.o blackbird.o \
- swift.o
+ swift.o rainier.o
ASTBMC = $(PLATDIR)/astbmc/built-in.a
$(ASTBMC): $(ASTBMC_OBJS:%=$(PLATDIR)/astbmc/%)
-
new file mode 100644
@@ -0,0 +1,136 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+ * Copyright (c) 2020 IBM
+ */
+
+#include <skiboot.h>
+#include <device.h>
+#include <ipmi.h>
+#include <chip.h>
+#include <i2c.h>
+#include <timebase.h>
+
+#include "astbmc.h"
+
+/*
+ * puti2c pu 2 1 C6 00 6 1 -quiet
+ * puti2c pu 2 1 C6 54 7 1 -quiet
+ * puti2c pu 2 1 C6 05 8 1 -quiet
+ * puti2c pu 2 1 C6 00 9 1 -quiet
+ *
+ * sleep 4
+ *
+ * puti2c pu 2 1 C6 55 6 1 -quiet
+ * puti2c pu 2 1 C6 55 7 1 -quiet
+ * 2 - engine
+ * 1 - port
+ * C6 - slave addr
+ * 55 - data
+ * 7 - register
+ * 1 - register length?
+ */
+
+static int64_t smbus_write8(struct i2c_bus *bus, uint8_t reg, uint8_t data)
+{
+ struct i2c_request req;
+
+ memset(&req, 0, sizeof(req));
+
+ req.bus = bus;
+ req.dev_addr = 0xC6 >> 1; /* Docs use 8bit addresses */
+
+ req.op = SMBUS_WRITE;
+ req.offset = reg;
+ req.offset_bytes = 1;
+ req.rw_buf = &data;
+ req.rw_len = 1;
+ req.timeout = 100;
+
+ return i2c_request_sync(&req);
+}
+
+static int64_t slot_power_enable(struct i2c_bus *bus)
+{
+ /* FIXME: we could do this in one transaction using auto-increment */
+ if (smbus_write8(bus, 0x6, 0x00))
+ return -1;
+ if (smbus_write8(bus, 0x7, 0x54))
+ return -1;
+ if (smbus_write8(bus, 0x8, 0x05))
+ return -1;
+ if (smbus_write8(bus, 0x9, 0x00))
+ return -1;
+
+ /* FIXME: Poll for PGOOD going high */
+
+ if (smbus_write8(bus, 0x6, 0x55))
+ return -1;
+ if (smbus_write8(bus, 0x7, 0x55))
+ return -1;
+
+ return 0;
+}
+
+static void rainier_init_slot_power(void)
+{
+ struct proc_chip *chip;
+ struct i2c_bus *bus;
+
+ /*
+ * Controller on P0 is for slots C7 -> C11
+ * on P2 is for slots C0 -> C4
+ * Both chips use engine 2 port 1
+ *
+ * Rainier with only one socket is officially supported, so
+ * we may not have slots C0 -> C4
+ */
+ for_each_chip(chip) {
+ if (chip->id % 4)
+ continue;
+ bus = p8_i2c_add_bus(chip->id, 2, 1, 400000);
+ if (!bus) {
+ prerror("Unable to find PCIe power controller I2C bus!\n");
+ return;
+ }
+ if (slot_power_enable(bus)) {
+ prerror("Error enabling PCIe slot power on chip %d\n",
+ chip->id);
+ }
+ }
+}
+
+static void rainier_init(void)
+{
+ astbmc_init();
+ rainier_init_slot_power();
+}
+
+static bool rainier_probe(void)
+{
+ if (!dt_node_is_compatible(dt_root, "ibm,rainier") &&
+ !dt_node_is_compatible(dt_root, "ibm,rainier-2s2u") &&
+ !dt_node_is_compatible(dt_root, "ibm,rainier-2s4u"))
+ return false;
+
+ /* Lot of common early inits here */
+ astbmc_early_init();
+
+ /* Setup UART for use by OPAL (Linux hvc) */
+ uart_set_console_policy(UART_CONSOLE_OPAL);
+
+ return true;
+}
+
+DECLARE_PLATFORM(rainier) = {
+ .name = "Rainier",
+ .probe = rainier_probe,
+ .init = rainier_init,
+ .start_preload_resource = flash_start_preload_resource,
+ .resource_loaded = flash_resource_loaded,
+ .bmc = &bmc_plat_ast2600_openbmc,
+ .cec_power_down = astbmc_ipmi_power_down,
+ .cec_reboot = astbmc_ipmi_reboot,
+ .elog_commit = ipmi_elog_commit,
+ .exit = astbmc_exit,
+ .terminate = ipmi_terminate,
+};