sim: bfin: new port

This can boot Das U-Boot and a Linux kernel.  It also supports Linux
userspace FLAT and FDPIC (dynamic and static) ELFs.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 153 insertions, 0 deletions

diff --git a/sim/bfin/dv-bfin_evt.c b/sim/bfin/dv-bfin_evt.c
new file mode 100644
index 00000000000..3af0717286e
--- /dev/null
+++ b/sim/bfin/dv-bfin_evt.c
@@ -0,0 +1,153 @@
+/* Blackfin Event Vector Table (EVT) model.
+
+   Copyright (C) 2010-2011 Free Software Foundation, Inc.
+   Contributed by Analog Devices, Inc.
+
+   This file is part of simulators.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "config.h"
+
+#include "sim-main.h"
+#include "devices.h"
+#include "dv-bfin_cec.h"
+#include "dv-bfin_evt.h"
+
+struct bfin_evt
+{
+  bu32 base;
+
+  /* Order after here is important -- matches hardware MMR layout.  */
+  bu32 evt[16];
+};
+#define mmr_base()      offsetof(struct bfin_evt, evt[0])
+#define mmr_offset(mmr) (offsetof(struct bfin_evt, mmr) - mmr_base())
+
+static const char * const mmr_names[] = {
+  "EVT0", "EVT1", "EVT2", "EVT3", "EVT4", "EVT5", "EVT6", "EVT7", "EVT8",
+  "EVT9", "EVT10", "EVT11", "EVT12", "EVT13", "EVT14", "EVT15",
+};
+#define mmr_name(off) mmr_names[(off) / 4]
+
+static unsigned
+bfin_evt_io_write_buffer (struct hw *me, const void *source,
+			  int space, address_word addr, unsigned nr_bytes)
+{
+  struct bfin_evt *evt = hw_data (me);
+  bu32 mmr_off;
+  bu32 value;
+
+  value = dv_load_4 (source);
+  mmr_off = addr - evt->base;
+
+  HW_TRACE_WRITE ();
+
+  evt->evt[mmr_off / 4] = value;
+
+  return nr_bytes;
+}
+
+static unsigned
+bfin_evt_io_read_buffer (struct hw *me, void *dest,
+			 int space, address_word addr, unsigned nr_bytes)
+{
+  struct bfin_evt *evt = hw_data (me);
+  bu32 mmr_off;
+  bu32 value;
+
+  mmr_off = addr - evt->base;
+
+  HW_TRACE_READ ();
+
+  value = evt->evt[mmr_off / 4];
+
+  dv_store_4 (dest, value);
+
+  return nr_bytes;
+}
+
+static void
+attach_bfin_evt_regs (struct hw *me, struct bfin_evt *evt)
+{
+  address_word attach_address;
+  int attach_space;
+  unsigned attach_size;
+  reg_property_spec reg;
+
+  if (hw_find_property (me, "reg") == NULL)
+    hw_abort (me, "Missing \"reg\" property");
+
+  if (!hw_find_reg_array_property (me, "reg", 0, &reg))
+    hw_abort (me, "\"reg\" property must contain three addr/size entries");
+
+  hw_unit_address_to_attach_address (hw_parent (me),
+				     &reg.address,
+				     &attach_space, &attach_address, me);
+  hw_unit_size_to_attach_size (hw_parent (me), &reg.size, &attach_size, me);
+
+  if (attach_size != BFIN_COREMMR_EVT_SIZE)
+    hw_abort (me, "\"reg\" size must be %#x", BFIN_COREMMR_EVT_SIZE);
+
+  hw_attach_address (hw_parent (me),
+		     0, attach_space, attach_address, attach_size, me);
+
+  evt->base = attach_address;
+}
+
+static void
+bfin_evt_finish (struct hw *me)
+{
+  struct bfin_evt *evt;
+
+  evt = HW_ZALLOC (me, struct bfin_evt);
+
+  set_hw_data (me, evt);
+  set_hw_io_read_buffer (me, bfin_evt_io_read_buffer);
+  set_hw_io_write_buffer (me, bfin_evt_io_write_buffer);
+
+  attach_bfin_evt_regs (me, evt);
+}
+
+const struct hw_descriptor dv_bfin_evt_descriptor[] = {
+  {"bfin_evt", bfin_evt_finish,},
+  {NULL, NULL},
+};
+
+#define EVT_STATE(cpu) DV_STATE_CACHED (cpu, evt)
+
+void
+cec_set_evt (SIM_CPU *cpu, int ivg, bu32 handler_addr)
+{
+  if (ivg > IVG15 || ivg < 0)
+    sim_io_error (CPU_STATE (cpu), "%s: ivg %i out of range !", __func__, ivg);
+
+  EVT_STATE (cpu)->evt[ivg] = handler_addr;
+}
+
+bu32
+cec_get_evt (SIM_CPU *cpu, int ivg)
+{
+  if (ivg > IVG15 || ivg < 0)
+    sim_io_error (CPU_STATE (cpu), "%s: ivg %i out of range !", __func__, ivg);
+
+  return EVT_STATE (cpu)->evt[ivg];
+}
+
+bu32
+cec_get_reset_evt (SIM_CPU *cpu)
+{
+  /* XXX: This should tail into the model to get via BMODE pins.  */
+  return 0xef000000;
+}