soc/cavium: import raw BDK sources

This imports common BDK sources that will be used in subsequent
patches.
The BDK is licensed under BSD and will be reduced in size and optimized to
compile under coreboot.

Change-Id: Icb32ee670d9fa9e5c10f9abb298cebf616fa67ad
Signed-off-by: David Hendricks <dhendricks@fb.com>
Reviewed-on: https://review.coreboot.org/25524
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>

2 files changed, 189 insertions, 0 deletions

diff --git a/src/vendorcode/cavium/bdk/libbdk-boot/bdk-boot-status.c b/src/vendorcode/cavium/bdk/libbdk-boot/bdk-boot-status.c
new file mode 100644
index 0000000000..83ab14cbc7
--- /dev/null
+++ b/src/vendorcode/cavium/bdk/libbdk-boot/bdk-boot-status.c
@@ -0,0 +1,81 @@
+/***********************license start***********************************
+* Copyright (c) 2003-2017  Cavium Inc. (support@cavium.com). All rights
+* reserved.
+*
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*
+*   * Redistributions of source code must retain the above copyright
+*     notice, this list of conditions and the following disclaimer.
+*
+*   * 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.
+*
+*   * Neither the name of Cavium Inc. nor the names of
+*     its contributors may be used to endorse or promote products
+*     derived from this software without specific prior written
+*     permission.
+*
+* This Software, including technical data, may be subject to U.S. export
+* control laws, including the U.S. Export Administration Act and its
+* associated regulations, and may be subject to export or import
+* regulations in other countries.
+*
+* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
+* AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
+* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT
+* TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY
+* REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT
+* DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES
+* OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR
+* PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT,
+* QUIET POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE  RISK
+* ARISING OUT OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
+***********************license end**************************************/
+#include <bdk.h>
+#include "libbdk-arch/bdk-csrs-mio_tws.h"
+
+/**
+ * Report boot status to the BMC or whomever might care. This function
+ * will return quickly except for a status of "power cycle". In the power cycle
+ * case it is assumed the board is in a bad state and should not continue until
+ * a power cycle restarts us.
+ *
+ * @param status Status to report. Enumerated in bdk_boot_status_t
+ */
+void bdk_boot_status(bdk_boot_status_t status)
+{
+    bdk_node_t node = bdk_numa_master();
+    int twsi = bdk_config_get_int(BDK_CONFIG_BMC_TWSI);
+
+    /* Update status */
+    if (twsi != -1)
+    {
+        BDK_CSR_DEFINE(sw_twsi, BDK_MIO_TWSX_SW_TWSI(twsi));
+        sw_twsi.u = 0;
+        sw_twsi.s.v = 1; /* Valid data */
+        sw_twsi.s.slonly = 1; /* Slave only */
+        sw_twsi.s.data = status;
+        BDK_CSR_WRITE(node, BDK_MIO_TWSX_SW_TWSI(twsi), sw_twsi.u);
+    }
+
+    /* As a special case, power cycle will display a message and try a
+       soft reset if we can't power cycle in 5 seconds */
+    if (status == BDK_BOOT_STATUS_REQUEST_POWER_CYCLE)
+    {
+        if (twsi != -1)
+        {
+            printf("Requested power cycle\n");
+            bdk_wait_usec(5000000); /* 5 sec */
+            printf("Power cycle failed, trying soft reset\n");
+        }
+        else
+            printf("Performing soft reset\n");
+        bdk_reset_chip(node);
+    }
+}
+
diff --git a/src/vendorcode/cavium/bdk/libbdk-boot/bdk-watchdog.c b/src/vendorcode/cavium/bdk/libbdk-boot/bdk-watchdog.c
new file mode 100644
index 0000000000..48f955a7ef
--- /dev/null
+++ b/src/vendorcode/cavium/bdk/libbdk-boot/bdk-watchdog.c
@@ -0,0 +1,108 @@
+/***********************license start***********************************
+* Copyright (c) 2003-2017  Cavium Inc. (support@cavium.com). All rights
+* reserved.
+*
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*
+*   * Redistributions of source code must retain the above copyright
+*     notice, this list of conditions and the following disclaimer.
+*
+*   * 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.
+*
+*   * Neither the name of Cavium Inc. nor the names of
+*     its contributors may be used to endorse or promote products
+*     derived from this software without specific prior written
+*     permission.
+*
+* This Software, including technical data, may be subject to U.S. export
+* control laws, including the U.S. Export Administration Act and its
+* associated regulations, and may be subject to export or import
+* regulations in other countries.
+*
+* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
+* AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
+* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT
+* TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY
+* REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT
+* DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES
+* OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR
+* PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT,
+* QUIET POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE  RISK
+* ARISING OUT OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
+***********************license end**************************************/
+#include <bdk.h>
+#include "libbdk-arch/bdk-csrs-gti.h"
+
+/**
+ * Setup the watchdog to expire in timeout_ms milliseconds. When the watchdog
+ * expires, the chip three things happen:
+ * 1) Expire 1: interrupt that is ignored by the BDK
+ * 2) Expire 2: DEL3T interrupt, which is disabled and ignored
+ * 3) Expire 3: Soft reset of the chip
+ *
+ * Since we want a soft reset, we actually program the watchdog to expire at
+ * the timeout / 3.
+ *
+ * @param timeout_ms Timeout in milliseconds. If this is zero, the timeout is taken from the
+ *                   global configuration option BDK_BRD_CFG_WATCHDOG_TIMEOUT
+ */
+void bdk_watchdog_set(unsigned int timeout_ms)
+{
+    if (timeout_ms == 0)
+        timeout_ms = bdk_config_get_int(BDK_CONFIG_WATCHDOG_TIMEOUT);
+
+    if (timeout_ms > 0)
+    {
+        uint64_t sclk = bdk_clock_get_rate(bdk_numa_local(), BDK_CLOCK_SCLK);
+        uint64_t timeout_sclk = sclk * timeout_ms / 1000;
+        /* Per comment above, we want the watchdog to expire at 3x the rate specified */
+        timeout_sclk /= 3;
+        /* Watchdog counts in 1024 cycle steps */
+        uint64_t timeout_wdog = timeout_sclk >> 10;
+        /* We can only specify the upper 16 bits of a 24 bit value. Round up */
+        timeout_wdog = (timeout_wdog + 0xff) >> 8;
+        /* If the timeout overflows the hardware limit, set max */
+        if (timeout_wdog >= 0x10000)
+            timeout_wdog = 0xffff;
+
+        BDK_TRACE(INIT, "Watchdog: Set to expire %lu SCLK cycles\n", timeout_wdog << 18);
+        BDK_CSR_MODIFY(c, bdk_numa_local(), BDK_GTI_CWD_WDOGX(bdk_get_core_num()),
+            c.s.len = timeout_wdog;
+            c.s.mode = 3);
+    }
+}
+
+/**
+ * Signal the watchdog that we are still running
+ */
+void bdk_watchdog_poke(void)
+{
+    BDK_CSR_WRITE(bdk_numa_local(), BDK_GTI_CWD_POKEX(bdk_get_core_num()), 0);
+}
+
+/**
+ * Disable the hardware watchdog
+ */
+void bdk_watchdog_disable(void)
+{
+    BDK_CSR_WRITE(bdk_numa_local(), BDK_GTI_CWD_WDOGX(bdk_get_core_num()), 0);
+    BDK_TRACE(INIT, "Watchdog: Disabled\n");
+}
+
+/**
+ * Return true if the watchdog is configured and running
+ *
+ * @return Non-zero if watchdog is running
+ */
+int bdk_watchdog_is_running(void)
+{
+    BDK_CSR_INIT(wdog, bdk_numa_local(), BDK_GTI_CWD_WDOGX(bdk_get_core_num()));
+    return wdog.s.mode != 0;
+}
+