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>

1 files changed, 122 insertions, 0 deletions

diff --git a/src/vendorcode/cavium/include/bdk/libbdk-os/bdk-thread.h b/src/vendorcode/cavium/include/bdk/libbdk-os/bdk-thread.h
new file mode 100644
index 0000000000..ef62dd7fe3
--- /dev/null
+++ b/src/vendorcode/cavium/include/bdk/libbdk-os/bdk-thread.h
@@ -0,0 +1,122 @@
+/***********************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**************************************/
+
+/**
+ * @file
+ *
+ * Functions for controlling threads.
+ *
+ * <hr>$Revision: 49448 $<hr>
+ *
+ * @defgroup thread Threading library
+ * @{
+ */
+
+/* Use a larger stack size for main() as it tends to do lots of
+    extra stuff. For example, DDR init requires a bigger stack */
+#define BDK_THREAD_MAIN_STACK_SIZE 16384
+#define BDK_THREAD_DEFAULT_STACK_SIZE 8192
+
+typedef void (*bdk_thread_func_t)(int arg, void *arg1);
+
+extern int bdk_thread_initialize(void);
+extern void bdk_thread_yield(void);
+extern int bdk_thread_create(bdk_node_t node, uint64_t coremask, bdk_thread_func_t func, int arg0, void *arg1, int stack_size);
+extern void bdk_thread_destroy(void) __attribute__ ((noreturn));
+extern void bdk_thread_first(bdk_thread_func_t func, int arg0, void *arg1, int stack_size) __attribute__ ((noreturn));
+
+/**
+ * Number of the Core on which the program is currently running.
+ *
+ * @return Number of cores
+ */
+static inline int bdk_get_core_num(void) __attribute__ ((always_inline));
+static inline int bdk_get_core_num(void)
+{
+    if (CAVIUM_IS_MODEL(CAVIUM_CN8XXX))
+    {
+        int mpidr_el1;
+        BDK_MRS(MPIDR_EL1, mpidr_el1);
+        /* Core is 4 bits from AFF0 and rest from AFF1 */
+        int core_num;
+        core_num = mpidr_el1 & 0xf;
+        core_num |= (mpidr_el1 & 0xff00) >> 4;
+        return core_num;
+    }
+    else
+    {
+        uint64_t cvm_pn_el1;
+        BDK_MRS(s3_0_c11_c4_2, cvm_pn_el1);
+        return cvm_pn_el1 & 0xffff;
+    }
+}
+
+/**
+ * Return a mask representing this core in a 64bit bitmask
+ *
+ * @return
+ */
+static inline uint64_t bdk_core_to_mask(void) __attribute__ ((always_inline));
+static inline uint64_t bdk_core_to_mask(void)
+{
+    return 1ull << bdk_get_core_num();
+}
+
+static inline int bdk_is_boot_core(void)
+{
+    const int master = 0x80000000 | (bdk_numa_master() << 16);
+    int mpidr_el1;
+    BDK_MRS_NV(MPIDR_EL1, mpidr_el1);
+    return mpidr_el1 == master;
+}
+
+
+static inline void *bdk_thread_get_id(void) __attribute__ ((always_inline));
+static inline void *bdk_thread_get_id(void)
+{
+    uint64_t current;
+    BDK_MRS_NV(TPIDR_EL3, current);
+    /* If we haven't started threading yet use the core number. Add one
+        so the thread id is never zero */
+    if (!current)
+        current = bdk_get_core_num() + 1;
+    return (void*)current;
+}
+
+/** @} */