Copy from star64e

arch/risc-v/include/jh7110/irq.h

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+/****************************************************************************
+ * arch/risc-v/include/qemu-rv/irq.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_RISCV_INCLUDE_QEMU_RV_IRQ_H
+#define __ARCH_RISCV_INCLUDE_QEMU_RV_IRQ_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Map RISC-V exception code to NuttX IRQ */
+
+#define NR_IRQS (RISCV_IRQ_SEXT + 127)
+
+#endif /* __ARCH_RISCV_INCLUDE_QEMU_RV_IRQ_H */

arch/risc-v/src/jh7110/Make.defs

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+############################################################################
+# arch/risc-v/src/qemu-rv/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+include common/Make.defs
+
+# Specify our HEAD assembly file.  This will be linked as
+# the first object file, so it will appear at address 0
+HEAD_ASRC = qemu_rv_head.S
+
+# Specify our C code within this directory to be included
+CHIP_CSRCS  = qemu_rv_start.c qemu_rv_irq_dispatch.c qemu_rv_irq.c
+CHIP_CSRCS += qemu_rv_timerisr.c qemu_rv_allocateheap.c
+CHIP_CSRCS += qemu_rv_mm_init.c qemu_rv_pgalloc.c

arch/risc-v/src/jh7110/chip.h

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+/****************************************************************************
+ * arch/risc-v/src/qemu-rv/chip.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_RISCV_SRC_QEMU_RV_CHIP_H
+#define __ARCH_RISCV_SRC_QEMU_RV_CHIP_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/* Include the chip capabilities file */
+
+#include <arch/qemu-rv/chip.h>
+
+#include "qemu_rv_memorymap.h"
+
+#include "hardware/qemu_rv_memorymap.h"
+#include "hardware/qemu_rv_plic.h"
+
+#include "riscv_internal.h"
+#include "riscv_percpu.h"
+
+/****************************************************************************
+ * Macro Definitions
+ ****************************************************************************/
+
+#ifdef __ASSEMBLY__
+
+/****************************************************************************
+ * Name: setintstack
+ *
+ * Description:
+ *   Set the current stack pointer to the  "top" the correct interrupt stack
+ *   for the current CPU.
+ *
+ ****************************************************************************/
+
+#if defined(CONFIG_SMP) && CONFIG_ARCH_INTERRUPTSTACK > 15
+.macro  setintstack tmp0, tmp1
+  riscv_mhartid \tmp0
+  li    \tmp1, STACK_ALIGN_DOWN(CONFIG_ARCH_INTERRUPTSTACK)
+  mul   \tmp1, \tmp0, \tmp1
+  la    \tmp0, g_intstacktop
+  sub   sp, \tmp0, \tmp1
+.endm
+#endif /* CONFIG_SMP && CONFIG_ARCH_INTERRUPTSTACK > 15 */
+
+#if CONFIG_ARCH_INTERRUPTSTACK > 15
+#if !defined(CONFIG_SMP) && defined(CONFIG_ARCH_USE_S_MODE)
+.macro  setintstack tmp0, tmp1
+  csrr    \tmp0, CSR_SCRATCH
+  REGLOAD sp, RISCV_PERCPU_IRQSTACK(\tmp0)
+.endm
+#endif /* !defined(CONFIG_SMP) && defined(CONFIG_ARCH_USE_S_MODE) */
+#endif /* CONFIG_ARCH_INTERRUPTSTACK > 15 */
+
+#endif /* __ASSEMBLY__  */
+#endif /* __ARCH_RISCV_SRC_QEMU_RV_CHIP_H */

arch/risc-v/src/jh7110/hardware/jh7110_memorymap.h

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+/****************************************************************************
+ * arch/risc-v/src/qemu-rv/hardware/qemu_rv_memorymap.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_RISCV_SRC_QEMU_RV_HARDWARE_QEMU_RV_MEMORYMAP_H
+#define __ARCH_RISCV_SRC_QEMU_RV_HARDWARE_QEMU_RV_MEMORYMAP_H
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Register Base Address ****************************************************/
+
+#define QEMU_RV_PLIC_BASE    0x0c000000
+
+#endif /* __ARCH_RISCV_SRC_QEMU_RV_HARDWARE_QEMU_RV_MEMORYMAP_H */

arch/risc-v/src/jh7110/hardware/jh7110_plic.h

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+/****************************************************************************
+ * arch/risc-v/src/qemu-rv/hardware/qemu_rv_plic.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_RISCV_SRC_QEMU_RV_HARDWARE_QEMU_RV_PLIC_H
+#define __ARCH_RISCV_SRC_QEMU_RV_HARDWARE_QEMU_RV_PLIC_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Interrupt Priority */
+
+#define QEMU_RV_PLIC_PRIORITY    (QEMU_RV_PLIC_BASE + 0x000000)
+
+/* Hart 1 S-Mode Interrupt Enable */
+
+#define QEMU_RV_PLIC_ENABLE1   (QEMU_RV_PLIC_BASE + 0x002100)
+#define QEMU_RV_PLIC_ENABLE2   (QEMU_RV_PLIC_BASE + 0x002104)
+
+/* Hart 1 S-Mode Priority Threshold */
+
+#define QEMU_RV_PLIC_THRESHOLD (QEMU_RV_PLIC_BASE + 0x202000)
+
+/* Hart 1 S-Mode Claim / Complete */
+
+#define QEMU_RV_PLIC_CLAIM     (QEMU_RV_PLIC_BASE + 0x202004)
+
+#endif /* __ARCH_RISCV_SRC_QEMU_RV_HARDWARE_QEMU_RV_PLIC_H */

arch/risc-v/src/jh7110/jh7110_allocateheap.c

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+/****************************************************************************
+ * arch/risc-v/src/qemu-rv/qemu_rv_allocateheap.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <nuttx/kmalloc.h>
+#include <nuttx/userspace.h>
+
+#include <nuttx/arch.h>
+
+#ifdef CONFIG_MM_KERNEL_HEAP
+#include <arch/board/board_memorymap.h>
+#endif
+
+#include "riscv_internal.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#ifdef CONFIG_MM_KERNEL_HEAP
+#define KRAM_END    KSRAM_END
+#else
+#define KRAM_END    CONFIG_RAM_END
+#endif
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_allocate_heap
+ *
+ * Description:
+ *   This function will be called to dynamically set aside the heap region.
+ *
+ *   For the kernel build (CONFIG_BUILD_PROTECTED=y) with both kernel- and
+ *   user-space heaps (CONFIG_MM_KERNEL_HEAP=y), this function provides the
+ *   size of the unprotected, user-space heap.
+ *
+ *   If a protected kernel-space heap is provided, the kernel heap must be
+ *   allocated (and protected) by an analogous up_allocate_kheap().
+ *
+ *   The following memory map is assumed for the flat build:
+ *
+ *   .data region.  Size determined at link time.
+ *   .bss  region  Size determined at link time.
+ *   IDLE thread stack.  Size determined by CONFIG_IDLETHREAD_STACKSIZE.
+ *   Heap.  Extends to the end of User SRAM.
+ *
+ *   The following memory map is assumed for the protect build.
+ *   The kernel and user space have it's own dedicated heap space.
+ *
+ *   User .data region         Size determined at link time
+ *   User .bss region          Size determined at link time
+ *   User heap                 Extends to the end of User SRAM
+ *   Kernel .data region       Size determined at link time
+ *   Kernel .bss  region       Size determined at link time
+ *   Kernel IDLE thread stack  Size determined by CONFIG_IDLETHREAD_STACKSIZE
+ *   Kernel heap               Size determined by CONFIG_MM_KERNEL_HEAPSIZE
+ *
+ ****************************************************************************/
+
+void up_allocate_kheap(void **heap_start, size_t *heap_size)
+{
+#if defined(CONFIG_BUILD_PROTECTED) && defined(CONFIG_MM_KERNEL_HEAP)
+  /* Get the size and position of the user-space heap.
+   * This heap begins after the user-space .bss section.
+   */
+
+  uintptr_t ubase = (uintptr_t)USERSPACE->us_bssend;
+  size_t    usize = (uintptr_t)USERSPACE->us_heapend - ubase;
+
+  /* Return the user-space heap settings */
+
+  *heap_start = (void *)ubase;
+  *heap_size  = usize;
+
+  /* Allow user-mode access to the user heap memory in PMP
+   * is already done in qemu_rv_userspace().
+   */
+
+#else
+  /* Return the heap settings */
+
+  *heap_start = (void *)g_idle_topstack;
+  *heap_size = KRAM_END - g_idle_topstack;
+#endif /* CONFIG_BUILD_PROTECTED && CONFIG_MM_KERNEL_HEAP */
+}
+
+/****************************************************************************
+ * Name: up_allocate_kheap
+ *
+ * Description:
+ *   For the kernel build (CONFIG_BUILD_PROTECTED=y) with both kernel- and
+ *   user-space heaps (CONFIG_MM_KERNEL_HEAP=y), this function allocates
+ *   (and protects) the kernel-space heap.
+ *
+ ****************************************************************************/
+
+#if defined(CONFIG_BUILD_PROTECTED) && defined(CONFIG_MM_KERNEL_HEAP) && \
+    defined(__KERNEL__)
+void up_allocate_kheap(void **heap_start, size_t *heap_size)
+{
+  /* Return the kernel heap settings. */
+
+  *heap_start = (void *)g_idle_topstack;
+  *heap_size = KRAM_END - g_idle_topstack;
+}
+#endif /* CONFIG_BUILD_PROTECTED && CONFIG_MM_KERNEL_HEAP */
+
+/****************************************************************************
+ * Name: riscv_addregion
+ ****************************************************************************/
+
+#if CONFIG_MM_REGIONS > 1
+void riscv_addregion(void)
+{
+}
+#endif