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, 163 insertions, 0 deletions

diff --git a/src/vendorcode/cavium/bdk/libbdk-dram/bdk-dram-config.c b/src/vendorcode/cavium/bdk/libbdk-dram/bdk-dram-config.c
new file mode 100644
index 0000000000..3465c5d98b
--- /dev/null
+++ b/src/vendorcode/cavium/bdk/libbdk-dram/bdk-dram-config.c
@@ -0,0 +1,163 @@
+/***********************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 <unistd.h>
+
+BDK_REQUIRE_DEFINE(DRAM_CONFIG);
+
+/**
+ * Lookup a DRAM configuration by name and initialize DRAM using it
+ *
+ * @param node   Node to configure
+ * @param ddr_clock_override
+ *               If non zero, override the DRAM frequency specified
+ *               in the config with this value
+ *
+ * @return Amount of DRAM in MB, or negative on failure
+ */
+int bdk_dram_config(int node, int ddr_clock_override)
+{
+    const dram_config_t *config = libdram_config_load(node);
+    if (!config)
+    {
+        printf("N%d: No DRAM config specified, skipping DRAM init\n", node);
+        return 0;
+    }
+
+    BDK_TRACE(DRAM, "N%d: Starting DRAM init (config=%p, ddr_clock_override=%d)\n", node, config, ddr_clock_override);
+    int mbytes = libdram_config(node, config, ddr_clock_override);
+    BDK_TRACE(DRAM, "N%d: DRAM init returned %d\n", node, mbytes);
+    if (mbytes <= 0)
+    {
+        printf("ERROR: DDR initialization failed\n");
+        return -1;
+    }
+
+    return mbytes;
+}
+
+/**
+ * Do DRAM configuration tuning
+ *
+ * @param node   Node to tune
+ *
+ * @return Success or Fail
+ */
+int bdk_dram_tune(int node)
+{
+    int ret;
+    BDK_TRACE(DRAM, "N%d: Starting DRAM tuning\n", node);
+    ret = libdram_tune(node);
+    BDK_TRACE(DRAM, "N%d: DRAM tuning returned %d\n", node, ret);
+    return ret;
+}
+
+/**
+ * Do all the DRAM Margin tests 
+ *
+ * @param node   Node to test
+ *
+ * @return Success or Fail
+ */
+void bdk_dram_margin(int node)
+{
+    BDK_TRACE(DRAM, "N%d: Starting DRAM margining\n", node);
+    libdram_margin(node);
+    BDK_TRACE(DRAM, "N%d: Finished DRAM margining.\n", node);
+    return;
+}
+
+/**
+ * Return the string of the DRAM configuration info at the specified node.
+ * If the node is not configured, NULL is returned.
+ *
+ * @param node   node to retrieve
+ *
+ * @return string or NULL
+ */
+const char* bdk_dram_get_info_string(int node)
+{
+    #define INFO_STRING_LEN 40
+    static char info_string[INFO_STRING_LEN];
+    static const char *info_ptr = info_string;
+
+    snprintf(info_string, INFO_STRING_LEN,
+             " %ld MB, %ld MT/s, %s %s",
+             bdk_dram_get_size_mbytes(node),
+             bdk_config_get_int(BDK_CONFIG_DDR_SPEED, node),
+             (__bdk_dram_is_ddr4(node, 0)) ? "DDR4" : "DDR3",
+             (__bdk_dram_is_rdimm(node, 0)) ? "RDIMM" : "UDIMM");
+
+    return info_ptr;
+}
+
+
+/**
+ * Return the highest address currently used by the BDK. This address will
+ * be about 4MB above the top of the BDK to make sure small growths between the
+ * call and its use don't cause corruption. Any call to memory allocation can
+ * change this value.
+ *
+ * @return Size of the BDK in bytes
+ */
+uint64_t bdk_dram_get_top_of_bdk(void)
+{
+    /* Make sure the start address is higher that the BDK's active range.
+     *
+     * As sbrk() returns a node address, mask off the node portion of
+     * the address to make it a physical offset. Doing this simplifies the
+     * address checks and calculations which only work with physical offsets.
+     */
+    uint64_t top_of_bdk = (bdk_ptr_to_phys(sbrk(0)) & bdk_build_mask(40));
+    uint64_t l2_size = bdk_l2c_get_cache_size_bytes(bdk_numa_master());
+    if (top_of_bdk <= l2_size)
+    {
+        /* Early BDK code takes care of the first L2 sized area of memory */
+        top_of_bdk = l2_size;
+    }
+    else
+    {
+        /* Give 4MB of extra so the BDK has room to grow */
+        top_of_bdk += 4 << 20;
+        /* Align it on a 64KB boundary */
+        top_of_bdk >>= 16;
+        top_of_bdk <<= 16;
+    }
+    return top_of_bdk;
+}