From df067e5b69e61c36f623f7896c5246b49a1c1107 Mon Sep 17 00:00:00 2001
From: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date: Thu, 21 Dec 2023 15:16:48 +0100
Subject: bsp/tms570: Add TM27 support

Update #4982.
---
 bsps/arm/tms570/include/tm27.h | 129 ++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 128 insertions(+), 1 deletion(-)

(limited to 'bsps/arm')

diff --git a/bsps/arm/tms570/include/tm27.h b/bsps/arm/tms570/include/tm27.h
index 0dfa7bf628..a8ca08a0dd 100644
--- a/bsps/arm/tms570/include/tm27.h
+++ b/bsps/arm/tms570/include/tm27.h
@@ -1 +1,128 @@
-#include <rtems/tm27-default.h>
+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/**
+ * @file
+ *
+ * @ingroup RTEMSBSPsARMTMS570
+ *
+ * @brief This header file provides a TM27 support implementation.
+ */
+
+/*
+ * Copyright (c) 2023 embedded brains GmbH & Co. KG
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _RTEMS_TMTEST27
+#error "This is an RTEMS internal file you must not include directly."
+#endif
+
+#ifndef __tm27_h
+#define __tm27_h
+
+#include <rtems.h>
+
+#include <bsp/irq.h>
+#include <bsp/tms570.h>
+#include <rtems/score/armv4.h>
+
+#define MUST_WAIT_FOR_INTERRUPT 1
+
+#define TM27_INTERRUPT_VECTOR_DEFAULT TMS570_IRQ_TIMER_3
+
+#define TM27_INTERRUPT_VECTOR_ALTERNATIVE TMS570_IRQ_TIMER_1
+
+static inline void Install_tm27_vector( rtems_interrupt_handler handler )
+{
+  static rtems_interrupt_entry entry_2;
+  static rtems_interrupt_entry entry_3;
+
+  TMS570_RTI.CNT[1].CPUCx = 1;
+  TMS570_RTI.CNT[1].UCx = 0;
+  TMS570_RTI.CNT[1].FRCx = 0;
+  TMS570_RTI.CMP[1].COMPx = 1;
+  TMS570_RTI.CMP[1].UDCPx = 1;
+  TMS570_RTI.CMP[2].COMPx = 1;
+  TMS570_RTI.CMP[2].UDCPx = 1;
+  TMS570_RTI.CMP[3].COMPx = 1;
+  TMS570_RTI.CMP[3].UDCPx = 1;
+  TMS570_RTI.COMPCTRL |= TMS570_RTI_COMPCTRL_COMPSEL1 |
+    TMS570_RTI_COMPCTRL_COMPSEL2 |
+    TMS570_RTI_COMPCTRL_COMPSEL3;
+  TMS570_RTI.GCTRL |= TMS570_RTI_GCTRL_CNT1EN;
+
+  rtems_interrupt_entry_initialize(
+    &entry_2,
+    handler,
+    NULL,
+    "tm27"
+  );
+  (void) rtems_interrupt_entry_install(
+    TMS570_IRQ_TIMER_2,
+    RTEMS_INTERRUPT_SHARED,
+    &entry_2
+  );
+
+  rtems_interrupt_entry_initialize(
+    &entry_3,
+    handler,
+    NULL,
+    "tm27"
+  );
+  (void) rtems_interrupt_entry_install(
+    TMS570_IRQ_TIMER_3,
+    RTEMS_INTERRUPT_SHARED,
+    &entry_3
+  );
+}
+
+static inline void Cause_tm27_intr(void)
+{
+  TMS570_RTI.SETINTENA = TMS570_RTI_SETINTENA_SETINT3;
+}
+
+static inline void Clear_tm27_intr(void)
+{
+  TMS570_RTI.CLEARINTENA = TMS570_RTI_CLEARINTENA_CLEARINT2 |
+    TMS570_RTI_CLEARINTENA_CLEARINT3;
+}
+
+static inline void Lower_tm27_intr(void)
+{
+  TMS570_RTI.SETINTENA = TMS570_RTI_SETINTENA_SETINT2;
+  (void) _ARMV4_Status_irq_enable();
+}
+
+static inline rtems_status_code _TM27_Raise_alternative(void)
+{
+  TMS570_RTI.SETINTENA = TMS570_RTI_SETINTENA_SETINT1;
+  return RTEMS_SUCCESSFUL;
+}
+
+static inline rtems_status_code _TM27_Clear_alternative(void)
+{
+  TMS570_RTI.CLEARINTENA = TMS570_RTI_CLEARINTENA_CLEARINT1;
+  return RTEMS_SUCCESSFUL;
+}
+
+#endif /* __tm27_h */
-- 
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