LEON: added new drivers to the LEON2/LEON3 BSPs

Most drivers use the Driver Manager for device probing, they
work on AMBA-over-PCI systems if PCI is big-endian.

New APIs:
 * GPIO Library, interfaced to GRGPIO
 * GENIRQ, Generic interrupt service implementation helper

New GRLIB Drivers:
 * ACTEL 1553 RT, user interface is similar to 1553 BRM driver
 * GR1553 (1553 BC, RT and BM core)
 * AHBSTAT (AHB error status core)
 * GRADCDAC (Core interfacing to ADC/DAC hardware)
 * GRGPIO (GPIO port accessed from GPIO Library)
 * MCTRL (Memory controller settings configuration)
 * GRETH (10/100/1000 Ethernet driver using Driver manager)
 * GRPWM (Pulse Width Modulation core)
 * SPICTRL (SPI master interface)
 * GRSPW_ROUTER (SpaceWire Router AMBA configuration interface)
 * GRCTM (SpaceCraft on-board Time Management core)
 * SPWCUC (Time distribution over SpaceWire)
 * GRTC (SpaceCraft up-link Tele core)
 * GRTM (SpaceCraft down-link Tele Metry core)

GR712RC ASIC specific interfaces:
 * GRASCS
 * CANMUX (select between OCCAN and SATCAN)
 * SATCAN
 * SLINK

1 files changed, 73 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/sparc/shared/include/ahbstat.h b/c/src/lib/libbsp/sparc/shared/include/ahbstat.h
new file mode 100644
index 0000000000..8f0576c584
--- /dev/null
+++ b/c/src/lib/libbsp/sparc/shared/include/ahbstat.h
@@ -0,0 +1,73 @@
+/*  AHBSTAT driver interface
+ *
+ *  COPYRIGHT (c) 2011.
+ *  Cobham Gaisler AB.
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ */
+
+#ifndef __AHBSTAT_H__
+#define __AHBSTAT_H__
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* AHBSTAT Registers layout */
+struct ahbstat_regs {
+	volatile uint32_t status;
+	volatile uint32_t failing;
+};
+
+/* AHB fail interrupt callback to user. This function is declared weak so that
+ * the user can define a function pointer variable containing the address
+ * responsible for handling errors
+ *
+ * minor              Index of AHBSTAT hardware
+ * regs               Register address of AHBSTAT
+ * status             AHBSTAT status register at IRQ
+ * failing_address    AHBSTAT Failing address register at IRQ
+ *
+ * * User return 
+ *  0: print error onto terminal with printk and reenable AHBSTAT
+ *  1: just re-enable AHBSTAT
+ *  2: just print error
+ *  3: do nothing, let user do custom handling
+ */
+extern int (*ahbstat_error)(
+	int minor,
+	struct ahbstat_regs *regs,
+	uint32_t status,
+	uint32_t failing_address);
+
+/* Get Last received AHB Error
+ *
+ * \param minor    Index used to indentify a specific AHBSTAT core
+ * \param status   Status register at time of error IRQ was recevied
+ * \param address  Failing address register at time of error IRQ
+ *
+ * Return
+ *   0: No error received
+ *   1: Error Received, last status and address stored into argument pointers
+ *  -1: No such AHBSTAT device
+ */
+extern int ahbstat_last_error(int minor, uint32_t *status, uint32_t *address);
+
+/* Get AHBSTAT registers address from minor. Can also be used to check if
+ * AHBSTAT hardware is present.
+ *
+ * Return 
+ *   NULL       returned if no such device
+ *   non-zero   Address to AHBSTAT register
+ */
+extern struct ahbstat_regs *ahbstat_get_regs(int minor);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif