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, 197 insertions, 0 deletions

diff --git a/src/vendorcode/cavium/bdk/libbdk-hal/bdk-gpio.c b/src/vendorcode/cavium/bdk/libbdk-hal/bdk-gpio.c
new file mode 100644
index 0000000000..55f0dbf3f2
--- /dev/null
+++ b/src/vendorcode/cavium/bdk/libbdk-hal/bdk-gpio.c
@@ -0,0 +1,197 @@
+/***********************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-gpio.h"
+
+/* This code is an optional part of the BDK. It is only linked in
+    if BDK_REQUIRE() needs it */
+BDK_REQUIRE_DEFINE(GPIO);
+
+/**
+ * Initialize a single GPIO as either an input or output. If it is
+ * an output, also set its output value.
+ *
+ * @param gpio      GPIO to initialize
+ * @param is_output Non zero if this GPIO should be an output
+ * @param output_value
+ *                  Value of the GPIO if it should be an output. Not used if the
+ *                  GPIO isn't an output.
+ *
+ * @return Zero on success, negative ob failure
+ */
+int bdk_gpio_initialize(bdk_node_t node, int gpio, int is_output, int output_value)
+{
+    if ((gpio >= 0) && (gpio < bdk_gpio_get_num()))
+    {
+        int gpio_group = gpio >> 6;
+        int gpio_index = gpio & 63;
+        if (output_value)
+            bdk_gpio_set(node, gpio_group, 1ull << gpio_index);
+        else
+            bdk_gpio_clear(node, gpio_group, 1ull << gpio_index);
+
+        BDK_CSR_DEFINE(cfg, BDK_GPIO_BIT_CFGX(gpio));
+        cfg.u = 0;
+        cfg.s.tx_oe = !!is_output;
+        BDK_CSR_WRITE(node, BDK_GPIO_BIT_CFGX(gpio), cfg.u);
+    }
+    else
+    {
+        bdk_error("bdk_gpio_initialize: Illegal GPIO\n");
+        return -1;
+    }
+    return 0;
+}
+
+
+/**
+ * GPIO Read Data
+ *
+ * @param node       Node GPIO block is on
+ * @param gpio_block GPIO block to access. Each block contains up to 64 GPIOs
+ *
+ * @return Status of the GPIO pins for the given block
+ */
+uint64_t bdk_gpio_read(bdk_node_t node, int gpio_block)
+{
+    bdk_gpio_rx_dat_t gpio_rx_dat;
+    switch (gpio_block)
+    {
+        case 0:
+            gpio_rx_dat.u = BDK_CSR_READ(node, BDK_GPIO_RX_DAT);
+            break;
+        case 1:
+            gpio_rx_dat.u = BDK_CSR_READ(node, BDK_GPIO_RX1_DAT);
+            break;
+        default:
+            bdk_error("GPIO block %d not supported\n", gpio_block);
+            gpio_rx_dat.u = 0;
+            break;
+    }
+    return gpio_rx_dat.s.dat;
+}
+
+
+/**
+ * GPIO Clear pin
+ *
+ * @param node       Node GPIO block is on
+ * @param gpio_block GPIO block to access. Each block contains up to 64 GPIOs
+ * @param clear_mask Bit mask to indicate which bits to drive to '0'.
+ */
+void bdk_gpio_clear(bdk_node_t node, int gpio_block, uint64_t clear_mask)
+{
+    switch (gpio_block)
+    {
+        case 0:
+            BDK_CSR_WRITE(node, BDK_GPIO_TX_CLR, clear_mask);
+            break;
+        case 1:
+            BDK_CSR_WRITE(node, BDK_GPIO_TX1_CLR, clear_mask);
+            break;
+        default:
+            bdk_error("GPIO block %d not supported\n", gpio_block);
+            break;
+    }
+}
+
+
+/**
+ * GPIO Set pin
+ *
+ * @param node       Node GPIO block is on
+ * @param gpio_block GPIO block to access. Each block contains up to 64 GPIOs
+ * @param set_mask   Bit mask to indicate which bits to drive to '1'.
+ */
+void bdk_gpio_set(bdk_node_t node, int gpio_block, uint64_t set_mask)
+{
+    switch (gpio_block)
+    {
+        case 0:
+            BDK_CSR_WRITE(node, BDK_GPIO_TX_SET, set_mask);
+            break;
+        case 1:
+            BDK_CSR_WRITE(node, BDK_GPIO_TX1_SET, set_mask);
+            break;
+        default:
+            bdk_error("GPIO block %d not supported\n", gpio_block);
+            break;
+    }
+}
+
+
+/** GPIO Select pin
+ *
+ * @param node      CPU node
+ * @param gpio      GPIO number
+ * @param pin       Pin number
+ */
+void bdk_gpio_select_pin(bdk_node_t node, int gpio, int pin)
+{
+    if ((gpio < 0) || (gpio >= bdk_gpio_get_num()))
+    {
+        bdk_warn("bdk_gpio_select_pin: Illegal GPIO %d\n", gpio);
+        return;
+    }
+
+    BDK_CSR_MODIFY(c, node, BDK_GPIO_BIT_CFGX(gpio), c.s.pin_sel = pin);
+}
+
+
+/**
+ * Return the number of GPIO pins on this chip
+ *
+ * @return Number of GPIO pins
+ */
+int bdk_gpio_get_num(void)
+{
+    if (CAVIUM_IS_MODEL(CAVIUM_CN88XX))
+        return 51;
+    else if (CAVIUM_IS_MODEL(CAVIUM_CN81XX))
+        return 48;
+    else if (CAVIUM_IS_MODEL(CAVIUM_CN83XX))
+        return 80;
+    else if (CAVIUM_IS_MODEL(CAVIUM_CN93XX))
+        return 96;
+    else
+    {
+        bdk_error("bdk_gpio_get_num(): Unsupported chip");
+        return 0;
+    }
+}