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, 115 insertions, 0 deletions

diff --git a/src/vendorcode/cavium/bdk/libbdk-dram/bdk-dram-test-addrbus.c b/src/vendorcode/cavium/bdk/libbdk-dram/bdk-dram-test-addrbus.c
new file mode 100644
index 0000000000..9fe8570454
--- /dev/null
+++ b/src/vendorcode/cavium/bdk/libbdk-dram/bdk-dram-test-addrbus.c
@@ -0,0 +1,115 @@
+/***********************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"
+
+/* Used for all memory reads/writes related to the test */
+#define READ64(address) __bdk_dram_read64(address)
+#define WRITE64(address, data) __bdk_dram_write64(address, data)
+
+/**
+ * Address bus test. This test writes a single value to each power of two in the
+ * area, looking for false aliases that would be created by address lines being
+ * shorted or tied together.
+ *
+ * @param area
+ * @param max_address
+ * @param bursts
+ *
+ * @return
+ */
+int __bdk_dram_test_mem_address_bus(uint64_t area, uint64_t max_address, int bursts)
+{
+    int failures = 0;
+
+    /* Clear our work area. Checking for aliases later could get false
+       positives if it matched stale data */
+    void *ptr = (area) ? bdk_phys_to_ptr(area) : NULL;
+    bdk_zero_memory(ptr, max_address - area);
+    __bdk_dram_flush_to_mem_range(area, max_address);
+
+    /* Each time we write, we'll write this pattern xored the address it is
+       written too */
+    uint64_t pattern = 0x0fedcba987654321;
+
+    /* Walk through the region incrementing our offset by a power of two. The
+       first few writes will be to the same cache line (offset 0x8, 0x10, 0x20,
+       and 0x40. Offset 0x80 and beyond will be to different cache lines */
+    uint64_t offset = 0x8;
+    while (area + offset < max_address)
+    {
+        uint64_t address = area + offset;
+        /* Write one location with pattern xor address */
+        uint64_t p = pattern ^ address;
+        WRITE64(address, p);
+        __bdk_dram_flush_to_mem(address);
+        offset <<= 1;
+    }
+
+    /* Read all of the area to make sure no other locations were written */
+    uint64_t a = area;
+    offset = 0x8;
+    uint64_t next_write = area + offset;
+    while (a < max_address)
+    {
+        if (a + 256 < max_address)
+            BDK_PREFETCH(a + 256, 0);
+        for (int i=0; i<16; i++)
+        {
+            uint64_t data = READ64(a);
+            uint64_t correct;
+            if (a == next_write)
+            {
+                correct = pattern ^ next_write;
+                offset <<= 1;
+                next_write = area + offset;
+            }
+            else
+                correct = 0;
+            if (bdk_unlikely(data != correct))
+            {
+                failures++;
+                __bdk_dram_report_error(a, data, correct, 0, -1);
+            }
+            a += 8;
+        }
+    }
+
+    return failures;
+}
+