[BSP/QEMU-VIRT-RISCV64] Port to the next RISC-V

1. VirtIO DM (NET, BLK, CONSOLE, RNG, RPMSG, SCSI, GPU, INPUT, CRYPTO).
2. Serial 8250 OFW.
3. MTD-CFI.
4. RTC-Goldfish.
5. ECAM generic PCI.
6. Syscon Reboot and Poweroff.
7. QEMU FW-CFG.
8. RISC-V AIA (APLIC, IMSIC), PLIC, INTC, ACLINT/CLINT.
9. PCI device (WDT, NVME, ATA, SDHCI)...

Signed-off-by: GuEe-GUI <[email protected]>

Author: GuEe-GUI

bsp/qemu-virt64-riscv/.config

@@ -1,3 +1,4 @@
 mnt.c
 romfs_data.c
 opensbi
+*.qcow2

bsp/qemu-virt64-riscv/.gitignore

@@ -6,52 +6,21 @@ RTT_DIR := ../../
 
 PKGS_DIR := packages
 
+SOC_DM_PIC_DIR      := $(RTT_DIR)/libcpu/risc-v/common/pic
+SOC_DM_SERIAL_DIR   := $(RTT_DIR)/libcpu/risc-v/common/serial
+
 source "$(RTT_DIR)/Kconfig"
 osource "$PKGS_DIR/Kconfig"
-rsource "driver/Kconfig"
 
-config BOARD_QEMU_VIRT_RV64
+config SOC_VIRT64_RISCV64
     bool
-    select ARCH_RISCV64
+    select ARCH_RISCV
+    select ARCH_CPU_64BIT
     select ARCH_USING_RISCV_COMMON64
     select RT_USING_COMPONENTS_INIT
     select RT_USING_USER_MAIN
     select RT_USING_CACHE
     select ARCH_MM_MMU
-    select ARCH_REMAP_KERNEL
-    default y
-
-config ENABLE_FPU
-    bool "Enable FPU"
-    select ARCH_RISCV_FPU
+    select ARCH_REMAP_KERNEL if RT_USING_SMART
+    select RT_USING_STDC_ATOMIC
     default y
-
-config ENABLE_VECTOR
-    bool "Using RISC-V Vector Extension"
-    select ARCH_RISCV_VECTOR
-    default n
-
-if ENABLE_VECTOR
-    choice
-    prompt "Vector Registers Length in Bits"
-    default ARCH_VECTOR_VLEN_128
-
-    config ARCH_VECTOR_VLEN_128
-        bool "128"
-
-    config ARCH_VECTOR_VLEN_256
-        bool "256"
-    endchoice
-endif
-
-config RT_USING_USERSPACE_32BIT_LIMIT
-    bool "Enable userspace 32bit limit"
-    default n
-
-config RT_USING_VIRTIO_MMIO_ALIGN
-    bool "Open packed attribution, this may caused an error on virtio"
-    default n
-
-config __STACKSIZE__
-    int "stack size for interrupt"
-    default 4096

bsp/qemu-virt64-riscv/Kconfig

@@ -21,22 +21,9 @@ env['ASCOM'] = env['ASPPCOM']
 
 Export('RTT_ROOT')
 Export('rtconfig')
-rtconfig.CPU='virt64'
-rtconfig.ARCH='risc-v'
 
 # prepare building environment
 objs = PrepareBuilding(env, RTT_ROOT, has_libcpu = False)
 
-stack_size = 4096
-
-if GetDepend('RT_USING_SMART'):
-    # use smart link.lds
-    env['LINKFLAGS'] = env['LINKFLAGS'].replace('link.lds', 'link_smart.lds')
-
-stack_lds = open('link_stacksize.lds', 'w')
-if GetDepend('__STACKSIZE__'): stack_size = GetDepend('__STACKSIZE__')
-stack_lds.write('__STACKSIZE__ = %d;\n' % stack_size)
-stack_lds.close()
-
 # make a building
 DoBuilding(TARGET, objs)

bsp/qemu-virt64-riscv/SConstruct

@@ -6,104 +6,12 @@
  * Change Logs:
  * Date           Author       Notes
  * 2021-01-30     lizhirui     first version
+ * 2025-04-26     GuEe-GUI     init common
  */
 
-#include <rthw.h>
-#include <rtthread.h>
-#include <rtdevice.h>
-
-#include "board.h"
-#include "mm_aspace.h"
-#include "tick.h"
-
-#include "drv_uart.h"
-#include "encoding.h"
-#include "stack.h"
-#include "sbi.h"
-#include "riscv.h"
-#include "plic.h"
-#include "stack.h"
-
-#ifdef RT_USING_SMART
-#include "riscv_mmu.h"
-#include "mmu.h"
-#include "page.h"
-#include "lwp_arch.h"
-
-rt_region_t init_page_region = {(rt_size_t)RT_HW_PAGE_START, (rt_size_t)RT_HW_PAGE_END};
-
-extern size_t MMUTable[];
-
-struct mem_desc platform_mem_desc[] = {
-    {KERNEL_VADDR_START, (rt_size_t)RT_HW_PAGE_END - 1, (rt_size_t)ARCH_MAP_FAILED, NORMAL_MEM},
-};
-
-#define NUM_MEM_DESC (sizeof(platform_mem_desc) / sizeof(platform_mem_desc[0]))
-
-#endif
-
-void primary_cpu_entry(void)
-{
-    /* disable global interrupt */
-    rt_hw_interrupt_disable();
-
-    entry();
-}
-
-#define IOREMAP_SIZE (1ul << 30)
-
-#ifndef ARCH_REMAP_KERNEL
-#define IOREMAP_VEND USER_VADDR_START
-#else
-#define IOREMAP_VEND 0ul
-#endif /* ARCH_REMAP_KERNEL */
+#include <setup.h>
 
 void rt_hw_board_init(void)
 {
-#ifdef RT_USING_SMART
-    /* init data structure */
-    rt_hw_mmu_map_init(&rt_kernel_space, (void *)(IOREMAP_VEND - IOREMAP_SIZE), IOREMAP_SIZE, (rt_size_t *)MMUTable, PV_OFFSET);
-
-    /* init page allocator */
-    rt_page_init(init_page_region);
-
-    /* setup region, and enable MMU */
-    rt_hw_mmu_setup(&rt_kernel_space, platform_mem_desc, NUM_MEM_DESC);
-#endif
-
-#ifdef RT_USING_HEAP
-    /* initialize memory system */
-    rt_system_heap_init(RT_HW_HEAP_BEGIN, RT_HW_HEAP_END);
-#endif
-
-    plic_init();
-
-    rt_hw_interrupt_init();
-
-    rt_hw_uart_init();
-
-#ifdef RT_USING_CONSOLE
-    /* set console device */
-    rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
-#endif /* RT_USING_CONSOLE */
-
-    rt_hw_tick_init();
-
-#ifdef RT_USING_COMPONENTS_INIT
-    rt_components_board_init();
-#endif
-
-#ifdef RT_USING_HEAP
-    rt_kprintf("heap: [0x%08x - 0x%08x]\n", (rt_ubase_t)RT_HW_HEAP_BEGIN, (rt_ubase_t)RT_HW_HEAP_END);
-#endif /* RT_USING_HEAP */
+    rt_hw_common_setup();
 }
-
-void rt_hw_cpu_reset(void)
-{
-    sbi_shutdown();
-
-    while (1)
-        ;
-}
-MSH_CMD_EXPORT_ALIAS(rt_hw_cpu_reset, reboot, reset machine);
-

bsp/qemu-virt64-riscv/applications/mnt.c

@@ -13,22 +13,6 @@
 
 #include <rtconfig.h>
 
-extern unsigned int __bss_start;
-extern unsigned int __bss_end;
-
-#ifndef RT_USING_SMART
-#define KERNEL_VADDR_START 0x0
-#endif
-
-#define VIRT64_SBI_MEMSZ (0x200000)
-
-#define RT_HW_HEAP_BEGIN ((void *)&__bss_end)
-#define RT_HW_HEAP_END   ((void *)(RT_HW_HEAP_BEGIN + 64 * 1024 * 1024))
-#define RT_HW_PAGE_START RT_HW_HEAP_END
-#define RT_HW_PAGE_END   ((void *)(KERNEL_VADDR_START + (256 * 1024 * 1024 - VIRT64_SBI_MEMSZ)))
-
 void rt_hw_board_init(void);
-void rt_init_user_mem(struct rt_thread *thread, const char *name,
-                      unsigned long *entry);
 
-#endif
+#endif /* BOARD_H__ */

bsp/qemu-virt64-riscv/driver/Kconfig

@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2006-2023, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2023-02-25     GuEe-GUI     the first version
+ */
+
+#include <rtthread.h>
+#include <rtdevice.h>
+
+void platform_get_ramfb_params(rt_uint32_t *width, rt_uint32_t *height)
+{
+    *width = 800;
+    *height = 600;
+}
+
+#include "../../../examples/test/hmi_test.c"