Backport from rtems-4-6-branch.

1 files changed, 54 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/sparc/leon2/leon_open_eth/leon_open_eth.c b/c/src/lib/libbsp/sparc/leon2/leon_open_eth/leon_open_eth.c
new file mode 100644
index 0000000000..ea89310d74
--- /dev/null
+++ b/c/src/lib/libbsp/sparc/leon2/leon_open_eth/leon_open_eth.c
@@ -0,0 +1,54 @@
+/*
+ *  LEON2 Opencores Ethernet MAC Configuration Information
+ *
+ *  $Id$
+ */
+
+
+#include <bsp.h>
+#include <libchip/open_eth.h>
+#if (OPEN_ETH_DEBUG & OPEN_ETH_DEBUG_PRINT_REGISTERS)
+#include <stdio.h>
+#endif
+
+/*
+ * Default sizes of transmit and receive descriptor areas
+ */
+#define RDA_COUNT     16
+#define TDA_COUNT     16
+
+/*
+ * Default location of device registers
+ */
+#define OPEN_ETH_BASE_ADDRESS 0xb0000000
+
+/*
+ * Default interrupt vector
+ */
+#define OPEN_ETH_VECTOR 0x1C
+
+open_eth_configuration_t leon_open_eth_configuration = {
+  OPEN_ETH_BASE_ADDRESS,        /* base address */ 
+  OPEN_ETH_VECTOR,              /* vector number */ 
+  TDA_COUNT,                 /* number of transmit descriptors */
+  RDA_COUNT,                 /* number of receive descriptors */
+  0                   /* 100 MHz operation */
+};
+
+int rtems_leon_open_eth_driver_attach(struct rtems_bsdnet_ifconfig *config)
+{
+
+  /* clear control register and reset NIC */
+  *(volatile int *) OPEN_ETH_BASE_ADDRESS = 0;
+  *(volatile int *) OPEN_ETH_BASE_ADDRESS = 0x800;
+  *(volatile int *) OPEN_ETH_BASE_ADDRESS = 0;
+
+  /* enable 100 MHz operation only if cpu frequency >= 50 MHz */
+  if (LEON_REG.Scaler_Reload >= 49) leon_open_eth_configuration.en100MHz = 1;
+
+  if (rtems_open_eth_driver_attach( config, &leon_open_eth_configuration )) {
+    LEON_REG.Interrupt_Clear = (1 << (OPEN_ETH_VECTOR - 0x10));
+    LEON_REG.Interrupt_Mask  |= (1 << (OPEN_ETH_VECTOR - 0x10));
+  }
+  return 0;
+}