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[PATCH 2/2] sim: bfin: new PINT model


Newer BF54x parts feature an updated GPIO block where all the interrupt
handling is split off, so create a new model for the pin interrupts.

This is missing the port forwarding aspects, but at least the register
interface should be there.

Committed.

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

2012-04-09  Mike Frysinger  <vapier@gentoo.org>

	* configure.ac (SIM_AC_OPTION_HARDWARE): Add bfin_pint.
	* configure: Regenerate.
	* dv-bfin_pint.c, dv-bfin_pint.h: New device model.
	* machs.c (bf542_dev): Add PINT register blocks.
	(bf544_dev, bf547_dev): Likewise.
	(PINT_PIQS): Define.
	(bf54x_port): Add pint/gpio routing.
	* machs.h (BFIN_MMR_PINT_SIZE): Define.
---
 sim/bfin/configure      |    1 +
 sim/bfin/configure.ac   |    1 +
 sim/bfin/dv-bfin_pint.c |  298 +++++++++++++++++++++++++++++++++++++++++++++++
 sim/bfin/dv-bfin_pint.h |   24 ++++
 sim/bfin/machs.c        |   51 ++++++++-
 sim/bfin/machs.h        |    1 +
 6 files changed, 375 insertions(+), 1 deletions(-)
 create mode 100644 sim/bfin/dv-bfin_pint.c
 create mode 100644 sim/bfin/dv-bfin_pint.h

diff --git a/sim/bfin/configure b/sim/bfin/configure
index 3aadc21..286cda8 100755
--- a/sim/bfin/configure
+++ b/sim/bfin/configure
@@ -5376,6 +5376,7 @@ hardware="$hardware \
 	bfin_nfc \
 	bfin_otp \
 	bfin_pfmon \
+	bfin_pint \
 	bfin_pll \
 	bfin_ppi \
 	bfin_rtc \
diff --git a/sim/bfin/configure.ac b/sim/bfin/configure.ac
index 5cae416..edf09ba 100644
--- a/sim/bfin/configure.ac
+++ b/sim/bfin/configure.ac
@@ -31,6 +31,7 @@ SIM_AC_OPTION_HARDWARE(yes,,\
 	bfin_nfc \
 	bfin_otp \
 	bfin_pfmon \
+	bfin_pint \
 	bfin_pll \
 	bfin_ppi \
 	bfin_rtc \
diff --git a/sim/bfin/dv-bfin_pint.c b/sim/bfin/dv-bfin_pint.c
new file mode 100644
index 0000000..0fa3c7e
--- /dev/null
+++ b/sim/bfin/dv-bfin_pint.c
@@ -0,0 +1,298 @@
+/* Blackfin Pin Interrupt (PINT) model
+
+   Copyright (C) 2010-2012 Free Software Foundation, Inc.
+   Contributed by Analog Devices, Inc. and Mike Frysinger.
+
+   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_pint.h"
+
+struct bfin_pint
+{
+  bu32 base;
+
+  /* Only accessed indirectly via the associated set/clear MMRs.  */
+  bu32 mask, edge, invert;
+
+  /* Order after here is important -- matches hardware MMR layout.  */
+  bu32 mask_set;
+  bu32 mask_clear;
+  bu32 request;
+  bu32 assign;
+  bu32 edge_set;
+  bu32 edge_clear;
+  bu32 invert_set;
+  bu32 invert_clear;
+  bu32 pinstate;
+  bu32 latch;
+};
+#define mmr_base()      offsetof(struct bfin_pint, mask_set)
+#define mmr_offset(mmr) (offsetof(struct bfin_pint, mmr) - mmr_base())
+
+static const char * const mmr_names[] =
+{
+  "PINT_MASK_SET", "PINT_MASK_CLEAR", "PINT_REQUEST", "PINT_ASSIGN",
+  "PINT_EDGE_SET", "PINT_EDGE_CLEAR", "PINT_INVERT_SET",
+  "PINT_INVERT_CLEAR", "PINT_PINSTATE", "PINT_LATCH",
+};
+#define mmr_name(off) mmr_names[(off) / 4]
+
+static unsigned
+bfin_pint_io_write_buffer (struct hw *me, const void *source, int space,
+			   address_word addr, unsigned nr_bytes)
+{
+  struct bfin_pint *pint = hw_data (me);
+  bu32 mmr_off;
+  bu32 value;
+  bu32 *valuep;
+
+  if (nr_bytes == 4)
+    value = dv_load_4 (source);
+  else
+    value = dv_load_2 (source);
+  mmr_off = addr - pint->base;
+  valuep = (void *)((unsigned long)pint + mmr_base() + mmr_off);
+
+  HW_TRACE_WRITE ();
+
+  /* XXX: The hardware allows 16 or 32 bit accesses ...  */
+  dv_bfin_mmr_require_32 (me, addr, nr_bytes, true);
+
+  switch (mmr_off)
+    {
+    case mmr_offset(request):
+    case mmr_offset(assign):
+    case mmr_offset(pinstate):
+    case mmr_offset(latch):
+      *valuep = value;
+      break;
+    case mmr_offset(mask_set):
+      dv_w1c_4 (&pint->mask, value, -1);
+      break;
+    case mmr_offset(mask_clear):
+      pint->mask |= value;
+      break;
+    case mmr_offset(edge_set):
+      dv_w1c_4 (&pint->edge, value, -1);
+      break;
+    case mmr_offset(edge_clear):
+      pint->edge |= value;
+      break;
+    case mmr_offset(invert_set):
+      dv_w1c_4 (&pint->invert, value, -1);
+      break;
+    case mmr_offset(invert_clear):
+      pint->invert |= value;
+      break;
+    default:
+      dv_bfin_mmr_invalid (me, addr, nr_bytes, true);
+      break;
+    }
+
+#if 0
+  /* If updating masks, make sure we send updated port info.  */
+  switch (mmr_off)
+    {
+    case mmr_offset(dir):
+    case mmr_offset(data) ... mmr_offset(toggle):
+      bfin_pint_forward_ouput (me, pint, data);
+      break;
+    case mmr_offset(maska) ... mmr_offset(maska_toggle):
+      bfin_pint_forward_int (me, pint, pint->maska, 0);
+      break;
+    case mmr_offset(maskb) ... mmr_offset(maskb_toggle):
+      bfin_pint_forward_int (me, pint, pint->maskb, 1);
+      break;
+    }
+#endif
+
+  return nr_bytes;
+}
+
+static unsigned
+bfin_pint_io_read_buffer (struct hw *me, void *dest, int space,
+			  address_word addr, unsigned nr_bytes)
+{
+  struct bfin_pint *pint = hw_data (me);
+  bu32 mmr_off;
+  bu32 *valuep;
+
+  mmr_off = addr - pint->base;
+  valuep = (void *)((unsigned long)pint + mmr_base() + mmr_off);
+
+  HW_TRACE_READ ();
+
+  /* XXX: The hardware allows 16 or 32 bit accesses ...  */
+  dv_bfin_mmr_require_32 (me, addr, nr_bytes, false);
+
+  switch (mmr_off)
+    {
+    case mmr_offset(request):
+    case mmr_offset(assign):
+    case mmr_offset(pinstate):
+    case mmr_offset(latch):
+      dv_store_4 (dest, *valuep);
+      break;
+    case mmr_offset(mask_set):
+    case mmr_offset(mask_clear):
+      dv_store_4 (dest, pint->mask);
+      break;
+    case mmr_offset(edge_set):
+    case mmr_offset(edge_clear):
+      dv_store_4 (dest, pint->edge);
+      break;
+    case mmr_offset(invert_set):
+    case mmr_offset(invert_clear):
+      dv_store_4 (dest, pint->invert);
+      break;
+    default:
+      dv_bfin_mmr_invalid (me, addr, nr_bytes, false);
+      break;
+    }
+
+  return nr_bytes;
+}
+
+#define ENC(bmap, piq) (((bmap) << 8) + (piq))
+
+#define PIQ_PORTS(n) \
+  { "piq0@"#n,   ENC(n,  0), 0, input_port, }, \
+  { "piq1@"#n,   ENC(n,  1), 0, input_port, }, \
+  { "piq2@"#n,   ENC(n,  2), 0, input_port, }, \
+  { "piq3@"#n,   ENC(n,  3), 0, input_port, }, \
+  { "piq4@"#n,   ENC(n,  4), 0, input_port, }, \
+  { "piq5@"#n,   ENC(n,  5), 0, input_port, }, \
+  { "piq6@"#n,   ENC(n,  6), 0, input_port, }, \
+  { "piq7@"#n,   ENC(n,  7), 0, input_port, }, \
+  { "piq8@"#n,   ENC(n,  8), 0, input_port, }, \
+  { "piq9@"#n,   ENC(n,  9), 0, input_port, }, \
+  { "piq10@"#n,  ENC(n, 10), 0, input_port, }, \
+  { "piq11@"#n,  ENC(n, 11), 0, input_port, }, \
+  { "piq12@"#n,  ENC(n, 12), 0, input_port, }, \
+  { "piq13@"#n,  ENC(n, 13), 0, input_port, }, \
+  { "piq14@"#n,  ENC(n, 14), 0, input_port, }, \
+  { "piq15@"#n,  ENC(n, 15), 0, input_port, }, \
+  { "piq16@"#n,  ENC(n, 16), 0, input_port, }, \
+  { "piq17@"#n,  ENC(n, 17), 0, input_port, }, \
+  { "piq18@"#n,  ENC(n, 18), 0, input_port, }, \
+  { "piq19@"#n,  ENC(n, 19), 0, input_port, }, \
+  { "piq20@"#n,  ENC(n, 20), 0, input_port, }, \
+  { "piq21@"#n,  ENC(n, 21), 0, input_port, }, \
+  { "piq22@"#n,  ENC(n, 22), 0, input_port, }, \
+  { "piq23@"#n,  ENC(n, 23), 0, input_port, }, \
+  { "piq24@"#n,  ENC(n, 24), 0, input_port, }, \
+  { "piq25@"#n,  ENC(n, 25), 0, input_port, }, \
+  { "piq26@"#n,  ENC(n, 26), 0, input_port, }, \
+  { "piq27@"#n,  ENC(n, 27), 0, input_port, }, \
+  { "piq28@"#n,  ENC(n, 28), 0, input_port, }, \
+  { "piq29@"#n,  ENC(n, 29), 0, input_port, }, \
+  { "piq30@"#n,  ENC(n, 30), 0, input_port, }, \
+  { "piq31@"#n,  ENC(n, 31), 0, input_port, },
+
+static const struct hw_port_descriptor bfin_pint_ports[] =
+{
+  { "stat", 0, 0, output_port, },
+  PIQ_PORTS(0)
+  PIQ_PORTS(1)
+  PIQ_PORTS(2)
+  PIQ_PORTS(3)
+  PIQ_PORTS(4)
+  PIQ_PORTS(5)
+  PIQ_PORTS(6)
+  PIQ_PORTS(7)
+  { NULL, 0, 0, 0, },
+};
+
+static void
+bfin_pint_port_event (struct hw *me, int my_port, struct hw *source,
+		      int source_port, int level)
+{
+  /* XXX: TODO.  */
+}
+
+static void
+attach_bfin_pint_regs (struct hw *me, struct bfin_pint *pint)
+{
+  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_MMR_PINT_SIZE)
+    hw_abort (me, "\"reg\" size must be %#x", BFIN_MMR_PINT_SIZE);
+
+  hw_attach_address (hw_parent (me),
+		     0, attach_space, attach_address, attach_size, me);
+
+  pint->base = attach_address;
+}
+
+static void
+bfin_pint_finish (struct hw *me)
+{
+  struct bfin_pint *pint;
+
+  pint = HW_ZALLOC (me, struct bfin_pint);
+
+  set_hw_data (me, pint);
+  set_hw_io_read_buffer (me, bfin_pint_io_read_buffer);
+  set_hw_io_write_buffer (me, bfin_pint_io_write_buffer);
+  set_hw_ports (me, bfin_pint_ports);
+  set_hw_port_event (me, bfin_pint_port_event);
+
+  /* Initialize the PINT.  */
+  switch (dv_get_bus_num (me))
+    {
+    case 0:
+      pint->assign = 0x00000101;
+      break;
+    case 1:
+      pint->assign = 0x01010000;
+      break;
+    case 2:
+      pint->assign = 0x00000101;
+      break;
+    case 3:
+      pint->assign = 0x02020303;
+      break;
+    default:
+      /* XXX: Should move this default into device tree.  */
+      hw_abort (me, "no support for PINT at this address yet");
+    }
+
+  attach_bfin_pint_regs (me, pint);
+}
+
+const struct hw_descriptor dv_bfin_pint_descriptor[] =
+{
+  {"bfin_pint", bfin_pint_finish,},
+  {NULL, NULL},
+};
diff --git a/sim/bfin/dv-bfin_pint.h b/sim/bfin/dv-bfin_pint.h
new file mode 100644
index 0000000..4966d12
--- /dev/null
+++ b/sim/bfin/dv-bfin_pint.h
@@ -0,0 +1,24 @@
+/* Blackfin Pin Interrupt (PINT) model
+
+   Copyright (C) 2010-2012 Free Software Foundation, Inc.
+   Contributed by Analog Devices, Inc. and Mike Frysinger.
+
+   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/>.  */
+
+#ifndef DV_BFIN_PINT_H
+#define DV_BFIN_PINT_H
+
+#endif
diff --git a/sim/bfin/machs.c b/sim/bfin/machs.c
index 5267cfa..9d0f263 100644
--- a/sim/bfin/machs.c
+++ b/sim/bfin/machs.c
@@ -1,7 +1,7 @@
 /* Simulator for Analog Devices Blackfin processors.
 
    Copyright (C) 2005-2012 Free Software Foundation, Inc.
-   Contributed by Analog Devices, Inc.
+   Contributed by Analog Devices, Inc. and Mike Frysinger.
 
    This file is part of simulators.
 
@@ -914,6 +914,10 @@ static const struct bfin_dev_layout bf542_dev[] =
   DEVICE (0xFFC00A00, BF54X_MMR_EBIU_AMC_SIZE, "bfin_ebiu_amc"),
   DEVICE (0xFFC00A20, BFIN_MMR_EBIU_DDRC_SIZE, "bfin_ebiu_ddrc"),
  _DEVICE (0xFFC01300, BFIN_MMR_EPPI_SIZE,      "bfin_eppi@1", 1),
+  DEVICE (0xFFC01400, BFIN_MMR_PINT_SIZE,      "bfin_pint@0"),
+  DEVICE (0xFFC01430, BFIN_MMR_PINT_SIZE,      "bfin_pint@1"),
+ _DEVICE (0xFFC01460, BFIN_MMR_PINT_SIZE,      "bfin_pint@2", 2),
+ _DEVICE (0xFFC01490, BFIN_MMR_PINT_SIZE,      "bfin_pint@3", 2),
   DEVICE (0xFFC014C0, BFIN_MMR_GPIO2_SIZE,     "bfin_gpio2@0"),
   DEVICE (0xFFC014E0, BFIN_MMR_GPIO2_SIZE,     "bfin_gpio2@1"),
   DEVICE (0xFFC01500, BFIN_MMR_GPIO2_SIZE,     "bfin_gpio2@2"),
@@ -954,6 +958,10 @@ static const struct bfin_dev_layout bf544_dev[] =
   DEVICE (0xFFC00A20, BFIN_MMR_EBIU_DDRC_SIZE, "bfin_ebiu_ddrc"),
  _DEVICE (0xFFC01000, BFIN_MMR_EPPI_SIZE,      "bfin_eppi@0", 1),
  _DEVICE (0xFFC01300, BFIN_MMR_EPPI_SIZE,      "bfin_eppi@1", 1),
+  DEVICE (0xFFC01400, BFIN_MMR_PINT_SIZE,      "bfin_pint@0"),
+  DEVICE (0xFFC01430, BFIN_MMR_PINT_SIZE,      "bfin_pint@1"),
+ _DEVICE (0xFFC01460, BFIN_MMR_PINT_SIZE,      "bfin_pint@2", 2),
+ _DEVICE (0xFFC01490, BFIN_MMR_PINT_SIZE,      "bfin_pint@3", 2),
   DEVICE (0xFFC014C0, BFIN_MMR_GPIO2_SIZE,     "bfin_gpio2@0"),
   DEVICE (0xFFC014E0, BFIN_MMR_GPIO2_SIZE,     "bfin_gpio2@1"),
   DEVICE (0xFFC01500, BFIN_MMR_GPIO2_SIZE,     "bfin_gpio2@2"),
@@ -995,6 +1003,10 @@ static const struct bfin_dev_layout bf547_dev[] =
   DEVICE (0xFFC00A20, BFIN_MMR_EBIU_DDRC_SIZE, "bfin_ebiu_ddrc"),
  _DEVICE (0xFFC01000, BFIN_MMR_EPPI_SIZE,      "bfin_eppi@0", 1),
  _DEVICE (0xFFC01300, BFIN_MMR_EPPI_SIZE,      "bfin_eppi@1", 1),
+  DEVICE (0xFFC01400, BFIN_MMR_PINT_SIZE,      "bfin_pint@0"),
+  DEVICE (0xFFC01430, BFIN_MMR_PINT_SIZE,      "bfin_pint@1"),
+ _DEVICE (0xFFC01460, BFIN_MMR_PINT_SIZE,      "bfin_pint@2", 2),
+ _DEVICE (0xFFC01490, BFIN_MMR_PINT_SIZE,      "bfin_pint@3", 2),
   DEVICE (0xFFC014C0, BFIN_MMR_GPIO2_SIZE,     "bfin_gpio2@0"),
   DEVICE (0xFFC014E0, BFIN_MMR_GPIO2_SIZE,     "bfin_gpio2@1"),
   DEVICE (0xFFC01500, BFIN_MMR_GPIO2_SIZE,     "bfin_gpio2@2"),
@@ -1034,6 +1046,23 @@ static const struct bfin_dmac_layout bf54x_dmac[] =
 #define bf547_dmac bf54x_dmac
 #define bf548_dmac bf54x_dmac
 #define bf549_dmac bf54x_dmac
+#define PINT_PIQS(p, b, g) \
+  PORT (p, "piq0@"#b,  g, "p0"), \
+  PORT (p, "piq1@"#b,  g, "p1"), \
+  PORT (p, "piq2@"#b,  g, "p2"), \
+  PORT (p, "piq3@"#b,  g, "p3"), \
+  PORT (p, "piq4@"#b,  g, "p4"), \
+  PORT (p, "piq5@"#b,  g, "p5"), \
+  PORT (p, "piq6@"#b,  g, "p6"), \
+  PORT (p, "piq7@"#b,  g, "p7"), \
+  PORT (p, "piq8@"#b,  g, "p8"), \
+  PORT (p, "piq9@"#b,  g, "p9"), \
+  PORT (p, "piq10@"#b, g, "p10"), \
+  PORT (p, "piq11@"#b, g, "p11"), \
+  PORT (p, "piq12@"#b, g, "p12"), \
+  PORT (p, "piq13@"#b, g, "p13"), \
+  PORT (p, "piq14@"#b, g, "p14"), \
+  PORT (p, "piq15@"#b, g, "p15")
 static const struct bfin_port_layout bf54x_port[] =
 {
   SIC (0,  0, "bfin_pll",          "pll"),
@@ -1056,7 +1085,11 @@ static const struct bfin_port_layout bf54x_port[] =
   SIC (0, 17, "bfin_gptimer@9",    "stat"),
   SIC (0, 18, "bfin_gptimer@10",   "stat"),
   SIC (0, 19, "bfin_pint@0",       "stat"),
+  PINT_PIQS ("bfin_pint@0", 0, "bfin_gpio2@0"),
+  PINT_PIQS ("bfin_pint@0", 1, "bfin_gpio2@1"),
   SIC (0, 20, "bfin_pint@1",       "stat"),
+  PINT_PIQS ("bfin_pint@1", 0, "bfin_gpio2@0"),
+  PINT_PIQS ("bfin_pint@1", 1, "bfin_gpio2@1"),
   SIC (0, 21, "bfin_dma@256",      "di"),	/* mdma0 */
   SIC (0, 21, "bfin_dma@257",      "di"),	/* mdma0 */
   SIC (0, 22, "bfin_dma@258",      "di"),	/* mdma1 */
@@ -1138,7 +1171,23 @@ static const struct bfin_port_layout bf54x_port[] =
   SIC (2, 28, "bfin_gptimer@6",    "stat"),
   SIC (2, 29, "bfin_gptimer@7",    "stat"),
   SIC (2, 30, "bfin_pint@2",       "stat"),
+  PINT_PIQS ("bfin_pint@2", 0, "bfin_gpio2@2"),
+  PINT_PIQS ("bfin_pint@2", 1, "bfin_gpio2@3"),
+  PINT_PIQS ("bfin_pint@2", 2, "bfin_gpio2@4"),
+  PINT_PIQS ("bfin_pint@2", 3, "bfin_gpio2@5"),
+  PINT_PIQS ("bfin_pint@2", 4, "bfin_gpio2@6"),
+  PINT_PIQS ("bfin_pint@2", 5, "bfin_gpio2@7"),
+  PINT_PIQS ("bfin_pint@2", 6, "bfin_gpio2@8"),
+  PINT_PIQS ("bfin_pint@2", 7, "bfin_gpio2@9"),
   SIC (2, 31, "bfin_pint@3",       "stat"),
+  PINT_PIQS ("bfin_pint@3", 0, "bfin_gpio2@2"),
+  PINT_PIQS ("bfin_pint@3", 1, "bfin_gpio2@3"),
+  PINT_PIQS ("bfin_pint@3", 2, "bfin_gpio2@4"),
+  PINT_PIQS ("bfin_pint@3", 3, "bfin_gpio2@5"),
+  PINT_PIQS ("bfin_pint@3", 4, "bfin_gpio2@6"),
+  PINT_PIQS ("bfin_pint@3", 5, "bfin_gpio2@7"),
+  PINT_PIQS ("bfin_pint@3", 6, "bfin_gpio2@8"),
+  PINT_PIQS ("bfin_pint@3", 7, "bfin_gpio2@9"),
 };
 #define bf542_port bf54x_port
 #define bf544_port bf54x_port
diff --git a/sim/bfin/machs.h b/sim/bfin/machs.h
index e37d2c7..27a8656 100644
--- a/sim/bfin/machs.h
+++ b/sim/bfin/machs.h
@@ -89,6 +89,7 @@ enum {
           0xFFC03600 0x10 - Control
           0xFFC03680 0x10 - Data  */
 #define BFIN_MMR_OTP_SIZE		0xa0
+#define BFIN_MMR_PINT_SIZE		0x28
 #define BFIN_MMR_PLL_BASE		0xFFC00000
 #define BFIN_MMR_PLL_SIZE		(4 * 6)
 #define BFIN_MMR_PPI_SIZE		(4 * 5)
-- 
1.7.8.5


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