LEON3: use CPU_Fatal_halt for halt

By removing the bsp_reset() mechanism and instead relying on the
CPU_Fatal_halt() routine SMP and single-core can halt by updating
the _Internal_errors_What_happened structure and set the state to
SYSTEM_STATE_TERMINATED (the generic way). This will be better
for test scripts and debugger that can generically look into why
the OS stopped.

For SMP systems, only the fatal-reporting CPU waits until all other
CPUs are powered down (with a time out of one clock tick). The
reason why a fatal stop happend may be because CPU0 was soft-locked
up so we can never trust that CPU0 should do the halt for us.

1 files changed, 0 insertions, 62 deletions

diff --git a/c/src/lib/libbsp/sparc/leon3/startup/bspreset.c b/c/src/lib/libbsp/sparc/leon3/startup/bspreset.c
deleted file mode 100644
index c642a75623..0000000000
--- a/c/src/lib/libbsp/sparc/leon3/startup/bspreset.c
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright (c) 2014 embedded brains GmbH.  All rights reserved.
- *
- *  embedded brains GmbH
- *  Dornierstr. 4
- *  82178 Puchheim
- *  Germany
- *  <rtems@embedded-brains.de>
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rtems.org/license/LICENSE.
- */
-
-#include <bsp.h>
-#include <bsp/bootcard.h>
-#include <leon.h>
-
-#ifdef RTEMS_SMP
-
-void bsp_reset(void)
-{
-  uint32_t self_cpu = rtems_get_current_processor();
-
-  if (self_cpu == 0) {
-    volatile struct irqmp_regs *irqmp = LEON3_IrqCtrl_Regs;
-
-    if (irqmp != NULL) {
-      /*
-       * Value was choosen to get something in the magnitude of 1ms on a 200MHz
-       * processor.
-       */
-      uint32_t max_wait = 1234567;
-
-      uint32_t cpu_count = rtems_get_processor_count();
-      uint32_t halt_mask = 0;
-      uint32_t i;
-
-      for (i = 0; i < cpu_count; ++i) {
-        if (i != self_cpu) {
-          halt_mask |= UINT32_C(1) << i;
-        }
-      }
-
-      /* Wait some time for secondary processors to halt */
-      i = 0;
-      while ((irqmp->mpstat & halt_mask) != halt_mask && i < max_wait) {
-        ++i;
-      }
-    }
-
-    __asm__ volatile (
-      "mov 1, %g1\n"
-      "ta 0\n"
-      "nop"
-    );
-  }
-
-  leon3_power_down_loop();
-}
-
-#endif /* RTEMS_SMP */