Merge pull request #217 from xobs/valentyusb-eptri

WIP: Add Valentyusb eptri

.travis.yml

@@ -16,7 +16,11 @@ install:
   - gem install ceedling
       
 before_script:
+  - wget -O /tmp/riscv-toolchain.tgz https://github.com/xpack-dev-tools/riscv-none-embed-gcc-xpack/releases/download/v8.3.0-1.1/xpack-riscv-none-embed-gcc-8.3.0-1.1-linux-x64.tgz
+  - tar -xzf /tmp/riscv-toolchain.tgz
+  - export PATH=$PWD/xPacks/riscv-none-embed-gcc/8.3.0-1.1/bin:$PATH
   - arm-none-eabi-gcc --version
+  - riscv-none-embed-gcc --version
 
 script:
   # Build all examples

docs/porting.md

@@ -25,8 +25,6 @@ Unless, you've read ahead, this will fail miserably. Now, lets get it to fail le
 
 One of the first things to change is the `-DCFG_TUSB_MCU` cflag in the `board.mk` file. This is used to tell TinyUSB what platform is being built. So, add an entry to `src/tusb_option.h` and update the CFLAG to match.
 
-Also, add an entry for the board in `hw/bsp/board.h`. The CFLAG is auto-added.
-
 Update `board.mk`'s VENDOR and CHIP_FAMILY values when creating the directory for the struct files. Duplicate one of the other sources from `src/portable` into `src/portable/<vendor>/<chip_family>` and delete all of the implementation internals. We'll cover what everything there does later. For now, get it compiling.
 
 ## Implementation
@@ -104,7 +102,7 @@ Calls to this look like:
 
     dcd_event_setup_received(0, setup, true);
 
-As before with `dcd_event_bus_signal` the first argument is the USB peripheral number and the third is true to signal its being called from an interrup handler. The middle argument is byte array of length 8 with the contents of the SETUP packet. It can be stack allocated because it is copied into the queue.
+As before with `dcd_event_bus_signal` the first argument is the USB peripheral number and the third is true to signal its being called from an interrupt handler. The middle argument is byte array of length 8 with the contents of the SETUP packet. It can be stack allocated because it is copied into the queue.
 
 #### Endpoints
 

examples/make.mk

@@ -2,8 +2,12 @@
 # Common make definition for all examples
 #
 
-# Compiler 
+# Compiler
+ifeq ($(BOARD), fomu)
+CROSS_COMPILE = riscv-none-embed-
+else
 CROSS_COMPILE = arm-none-eabi-
+endif
 CC = $(CROSS_COMPILE)gcc
 CXX = $(CROSS_COMPILE)g++
 OBJCOPY = $(CROSS_COMPILE)objcopy

hw/bsp/fomu/board.mk

@@ -0,0 +1,29 @@
+CFLAGS += \
+  -march=rv32i \
+  -mabi=ilp32 \
+  -nostdlib \
+  -DCFG_TUSB_MCU=OPT_MCU_VALENTYUSB_EPTRI
+
+MCU_DIR = hw/mcu/fomu
+BSP_DIR = hw/bsp/fomu
+
+# All source paths should be relative to the top level.
+LD_FILE = hw/bsp/fomu/fomu.ld
+
+# TODO remove later
+SRC_C += src/portable/$(VENDOR)/$(CHIP_FAMILY)/hal_$(CHIP_FAMILY).c
+
+SRC_C += 
+
+SRC_S += hw/bsp/fomu/crt0-vexriscv.S
+
+INC += \
+	$(TOP)/$(BSP_DIR)/include
+
+# For TinyUSB port source
+VENDOR = valentyusb
+CHIP_FAMILY = eptri
+
+# flash using dfu-util
+flash: $(BUILD)/$(BOARD)-firmware.dfu
+	dfu-util -D $^

hw/bsp/fomu/crt0-vexriscv.S

@@ -0,0 +1,83 @@
+.global main
+.global isr
+
+.section .text.start
+.global _start
+
+_start:
+  j crt_init
+
+.section .text
+.global  trap_entry
+trap_entry:
+  sw x1,  - 1*4(sp)
+  sw x5,  - 2*4(sp)
+  sw x6,  - 3*4(sp)
+  sw x7,  - 4*4(sp)
+  sw x10, - 5*4(sp)
+  sw x11, - 6*4(sp)
+  sw x12, - 7*4(sp)
+  sw x13, - 8*4(sp)
+  sw x14, - 9*4(sp)
+  sw x15, -10*4(sp)
+  sw x16, -11*4(sp)
+  sw x17, -12*4(sp)
+  sw x28, -13*4(sp)
+  sw x29, -14*4(sp)
+  sw x30, -15*4(sp)
+  sw x31, -16*4(sp)
+  addi sp,sp,-16*4
+  call isr
+  lw x1 , 15*4(sp)
+  lw x5,  14*4(sp)
+  lw x6,  13*4(sp)
+  lw x7,  12*4(sp)
+  lw x10, 11*4(sp)
+  lw x11, 10*4(sp)
+  lw x12,  9*4(sp)
+  lw x13,  8*4(sp)
+  lw x14,  7*4(sp)
+  lw x15,  6*4(sp)
+  lw x16,  5*4(sp)
+  lw x17,  4*4(sp)
+  lw x28,  3*4(sp)
+  lw x29,  2*4(sp)
+  lw x30,  1*4(sp)
+  lw x31,  0*4(sp)
+  addi sp,sp,16*4
+  mret
+
+.text
+crt_init:
+  la sp, _estack - 4
+  la a0, trap_entry
+  csrw mtvec, a0
+
+bss_init:
+  la a0, _sbss
+  la a1, _ebss + 4
+bss_loop:
+  beq a0,a1,bss_done
+  sw zero,0(a0)
+  add a0,a0,4
+  j bss_loop
+bss_done:
+
+  /* Load DATA */
+  la t0, _etext
+  la t1, _srelocate
+  la t2, _erelocate + 4
+3:
+  lw t3, 0(t0)
+  sw t3, 0(t1)
+  /* _edata is aligned to 4 bytes. Use word-xfers. */
+  addi t0, t0, 4
+  addi t1, t1, 4
+  bltu t1, t2, 3b
+
+  li a0, 0x880  //880 enable timer + external interrupt sources (until mstatus.MIE is set, they will never trigger an interrupt)
+  csrw mie,a0
+
+  call main
+infinite_loop:
+  j infinite_loop

hw/bsp/fomu/fomu.c

@@ -0,0 +1,117 @@
+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "common/tusb_common.h"
+#include "csr.h"
+#include "irq.h"
+
+//--------------------------------------------------------------------+
+// Board porting API
+//--------------------------------------------------------------------+
+
+void hal_dcd_isr(uint8_t rhport);
+
+void fomu_error(uint32_t line)
+{
+  (void)line;
+  TU_BREAKPOINT();
+}
+
+volatile uint32_t system_ticks = 0;
+static void timer_init(void)
+{
+	int t;
+
+	timer0_en_write(0);
+	t = CONFIG_CLOCK_FREQUENCY / 1000; // 1000 kHz tick
+	timer0_reload_write(t);
+	timer0_load_write(t);
+	timer0_en_write(1);
+  timer0_ev_enable_write(1);
+  timer0_ev_pending_write(1);
+	irq_setmask(irq_getmask() | (1 << TIMER0_INTERRUPT));
+}
+
+void isr(void)
+{
+  unsigned int irqs;
+
+  irqs = irq_pending() & irq_getmask();
+
+#if CFG_TUSB_RHPORT0_MODE == OPT_MODE_DEVICE
+  if (irqs & (1 << USB_INTERRUPT)) {
+    hal_dcd_isr(0);
+  }
+#endif
+  if (irqs & (1 << TIMER0_INTERRUPT)) {
+    system_ticks++;
+    timer0_ev_pending_write(1);
+  }
+}
+
+void board_init(void)
+{
+  irq_setmask(0);
+  irq_setie(1);
+  timer_init();
+  return;
+}
+
+void board_led_write(bool state)
+{
+  rgb_ctrl_write(0xff);
+  rgb_raw_write(state);
+}
+
+uint32_t board_button_read(void)
+{
+  return 0;
+}
+
+int board_uart_read(uint8_t* buf, int len)
+{
+  (void) buf;
+  (void) len;
+  return 0;
+}
+
+int board_uart_write(void const * buf, int len)
+{
+  int32_t offset = 0;
+  for (offset = 0; offset < len; offset++)
+    if (! (messible_status_read() & CSR_MESSIBLE_STATUS_FULL_OFFSET))
+      messible_in_write(((uint8_t *)buf)[offset]);
+  return len;
+}
+
+#if CFG_TUSB_OS == OPT_OS_NONE
+uint32_t board_millis(void)
+{
+  return system_ticks;
+}
+#endif

hw/bsp/fomu/fomu.ld

@@ -0,0 +1,104 @@
+OUTPUT_FORMAT("elf32-littleriscv")
+ENTRY(_start)
+
+__DYNAMIC = 0;
+
+MEMORY {
+	csr : ORIGIN = 0x60000000, LENGTH = 0x01000000
+	vexriscv_debug : ORIGIN = 0xf00f0000, LENGTH = 0x00000100
+	ram : ORIGIN = 0x10000000, LENGTH = 0x00020000
+	rom : ORIGIN = 0x2001a000, LENGTH = 0x00200000 - 0x1a000
+}
+
+/* The stack size used by the application. NOTE: you need to adjust according to your application. */
+STACK_SIZE = DEFINED(STACK_SIZE) ? STACK_SIZE : DEFINED(__stack_size__) ? __stack_size__ : 0x2000;
+
+/* Section Definitions */
+SECTIONS
+{
+    .text :
+    {
+        . = ALIGN(4);
+        _ftext = .;
+		*(.text.start)
+        *(.text .text.* .gnu.linkonce.t.*)
+        *(.glue_7t) *(.glue_7)
+        *(.rodata .rodata* .gnu.linkonce.r.*)
+
+        /* Support C constructors, and C destructors in both user code
+           and the C library. This also provides support for C++ code. */
+        . = ALIGN(4);
+        KEEP(*(.init))
+        . = ALIGN(4);
+        __preinit_array_start = .;
+        KEEP (*(.preinit_array))
+        __preinit_array_end = .;
+
+        . = ALIGN(4);
+        __init_array_start = .;
+        KEEP (*(SORT(.init_array.*)))
+        KEEP (*(.init_array))
+        __init_array_end = .;
+
+        . = ALIGN(4);
+        KEEP (*crtbegin.o(.ctors))
+        KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
+        KEEP (*(SORT(.ctors.*)))
+        KEEP (*crtend.o(.ctors))
+
+        . = ALIGN(4);
+        KEEP(*(.fini))
+
+        . = ALIGN(4);
+        __fini_array_start = .;
+        KEEP (*(.fini_array))
+        KEEP (*(SORT(.fini_array.*)))
+        __fini_array_end = .;
+
+        KEEP (*crtbegin.o(.dtors))
+        KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
+        KEEP (*(SORT(.dtors.*)))
+        KEEP (*crtend.o(.dtors))
+    } > rom
+
+    . = ALIGN(4);
+    _etext = .;            /* End of text section */
+
+    .relocate : AT (_etext)
+    {
+        . = ALIGN(4);
+        _srelocate = .;
+        *(.ramfunc .ramfunc.*);
+        *(.data .data.*);
+        . = ALIGN(4);
+        _erelocate = .;
+    } > ram
+
+    /* .bss section which is used for uninitialized data */
+    .bss (NOLOAD) :
+    {
+        . = ALIGN(4);
+        _sbss = . ;
+        _szero = .;
+        *(.bss .bss.*)
+        *(.sbss .sbss.*)
+        *(COMMON)
+        . = ALIGN(4);
+        _ebss = . ;
+        _ezero = .;
+        end = .;
+    } > ram
+
+    /* stack section */
+    .stack (NOLOAD):
+    {
+        . = ALIGN(8);
+        _sstack = .;
+        . = . + STACK_SIZE;
+        . = ALIGN(8);
+        _estack = .;
+    } > ram
+
+    . = ALIGN(4);
+    _end = . ;
+}

hw/bsp/fomu/include/csr.h

@@ -0,0 +1,750 @@
+//--------------------------------------------------------------------------------
+// Auto-generated by Migen (f4fcd10) & LiteX (1425a68d) on 2019-11-12 19:41:49
+//--------------------------------------------------------------------------------
+#ifndef __GENERATED_CSR_H
+#define __GENERATED_CSR_H
+#include <stdint.h>
+#ifdef CSR_ACCESSORS_DEFINED
+extern void csr_writeb(uint8_t value, unsigned long addr);
+extern uint8_t csr_readb(unsigned long addr);
+extern void csr_writew(uint16_t value, unsigned long addr);
+extern uint16_t csr_readw(unsigned long addr);
+extern void csr_writel(uint32_t value, unsigned long addr);
+extern uint32_t csr_readl(unsigned long addr);
+#else /* ! CSR_ACCESSORS_DEFINED */
+#include <hw/common.h>
+#endif /* ! CSR_ACCESSORS_DEFINED */
+
+/* ctrl */
+#define CSR_CTRL_BASE 0xe0000000L
+#define CSR_CTRL_RESET_ADDR 0xe0000000L
+#define CSR_CTRL_RESET_SIZE 1
+static inline unsigned char ctrl_reset_read(void) {
+	unsigned char r = csr_readl(0xe0000000L);
+	return r;
+}
+static inline void ctrl_reset_write(unsigned char value) {
+	csr_writel(value, 0xe0000000L);
+}
+#define CSR_CTRL_SCRATCH_ADDR 0xe0000004L
+#define CSR_CTRL_SCRATCH_SIZE 4
+static inline unsigned int ctrl_scratch_read(void) {
+	unsigned int r = csr_readl(0xe0000004L);
+	r <<= 8;
+	r |= csr_readl(0xe0000008L);
+	r <<= 8;
+	r |= csr_readl(0xe000000cL);
+	r <<= 8;
+	r |= csr_readl(0xe0000010L);
+	return r;
+}
+static inline void ctrl_scratch_write(unsigned int value) {
+	csr_writel(value >> 24, 0xe0000004L);
+	csr_writel(value >> 16, 0xe0000008L);
+	csr_writel(value >> 8, 0xe000000cL);
+	csr_writel(value, 0xe0000010L);
+}
+#define CSR_CTRL_BUS_ERRORS_ADDR 0xe0000014L
+#define CSR_CTRL_BUS_ERRORS_SIZE 4
+static inline unsigned int ctrl_bus_errors_read(void) {
+	unsigned int r = csr_readl(0xe0000014L);
+	r <<= 8;
+	r |= csr_readl(0xe0000018L);
+	r <<= 8;
+	r |= csr_readl(0xe000001cL);
+	r <<= 8;
+	r |= csr_readl(0xe0000020L);
+	return r;
+}
+
+/* messible */
+#define CSR_MESSIBLE_BASE 0xe0008000L
+#define CSR_MESSIBLE_IN_ADDR 0xe0008000L
+#define CSR_MESSIBLE_IN_SIZE 1
+static inline unsigned char messible_in_read(void) {
+	unsigned char r = csr_readl(0xe0008000L);
+	return r;
+}
+static inline void messible_in_write(unsigned char value) {
+	csr_writel(value, 0xe0008000L);
+}
+#define CSR_MESSIBLE_OUT_ADDR 0xe0008004L
+#define CSR_MESSIBLE_OUT_SIZE 1
+static inline unsigned char messible_out_read(void) {
+	unsigned char r = csr_readl(0xe0008004L);
+	return r;
+}
+#define CSR_MESSIBLE_STATUS_ADDR 0xe0008008L
+#define CSR_MESSIBLE_STATUS_SIZE 1
+static inline unsigned char messible_status_read(void) {
+	unsigned char r = csr_readl(0xe0008008L);
+	return r;
+}
+#define CSR_MESSIBLE_STATUS_FULL_OFFSET 0
+#define CSR_MESSIBLE_STATUS_FULL_SIZE 1
+#define CSR_MESSIBLE_STATUS_HAVE_OFFSET 1
+#define CSR_MESSIBLE_STATUS_HAVE_SIZE 1
+
+/* picorvspi */
+#define CSR_PICORVSPI_BASE 0xe0005000L
+#define CSR_PICORVSPI_CFG1_ADDR 0xe0005000L
+#define CSR_PICORVSPI_CFG1_SIZE 1
+static inline unsigned char picorvspi_cfg1_read(void) {
+	unsigned char r = csr_readl(0xe0005000L);
+	return r;
+}
+static inline void picorvspi_cfg1_write(unsigned char value) {
+	csr_writel(value, 0xe0005000L);
+}
+#define CSR_PICORVSPI_CFG1_BB_OUT_OFFSET 0
+#define CSR_PICORVSPI_CFG1_BB_OUT_SIZE 4
+#define CSR_PICORVSPI_CFG1_BB_CLK_OFFSET 4
+#define CSR_PICORVSPI_CFG1_BB_CLK_SIZE 1
+#define CSR_PICORVSPI_CFG1_BB_CS_OFFSET 5
+#define CSR_PICORVSPI_CFG1_BB_CS_SIZE 1
+#define CSR_PICORVSPI_CFG2_ADDR 0xe0005004L
+#define CSR_PICORVSPI_CFG2_SIZE 1
+static inline unsigned char picorvspi_cfg2_read(void) {
+	unsigned char r = csr_readl(0xe0005004L);
+	return r;
+}
+static inline void picorvspi_cfg2_write(unsigned char value) {
+	csr_writel(value, 0xe0005004L);
+}
+#define CSR_PICORVSPI_CFG2_BB_OE_OFFSET 0
+#define CSR_PICORVSPI_CFG2_BB_OE_SIZE 4
+#define CSR_PICORVSPI_CFG3_ADDR 0xe0005008L
+#define CSR_PICORVSPI_CFG3_SIZE 1
+static inline unsigned char picorvspi_cfg3_read(void) {
+	unsigned char r = csr_readl(0xe0005008L);
+	return r;
+}
+static inline void picorvspi_cfg3_write(unsigned char value) {
+	csr_writel(value, 0xe0005008L);
+}
+#define CSR_PICORVSPI_CFG3_RLAT_OFFSET 0
+#define CSR_PICORVSPI_CFG3_RLAT_SIZE 4
+#define CSR_PICORVSPI_CFG3_CRM_OFFSET 4
+#define CSR_PICORVSPI_CFG3_CRM_SIZE 1
+#define CSR_PICORVSPI_CFG3_QSPI_OFFSET 5
+#define CSR_PICORVSPI_CFG3_QSPI_SIZE 1
+#define CSR_PICORVSPI_CFG3_DDR_OFFSET 6
+#define CSR_PICORVSPI_CFG3_DDR_SIZE 1
+#define CSR_PICORVSPI_CFG4_ADDR 0xe000500cL
+#define CSR_PICORVSPI_CFG4_SIZE 1
+static inline unsigned char picorvspi_cfg4_read(void) {
+	unsigned char r = csr_readl(0xe000500cL);
+	return r;
+}
+static inline void picorvspi_cfg4_write(unsigned char value) {
+	csr_writel(value, 0xe000500cL);
+}
+#define CSR_PICORVSPI_CFG4_MEMIO_OFFSET 7
+#define CSR_PICORVSPI_CFG4_MEMIO_SIZE 1
+#define CSR_PICORVSPI_STAT1_ADDR 0xe0005010L
+#define CSR_PICORVSPI_STAT1_SIZE 1
+static inline unsigned char picorvspi_stat1_read(void) {
+	unsigned char r = csr_readl(0xe0005010L);
+	return r;
+}
+#define CSR_PICORVSPI_STAT1_BB_IN_OFFSET 0
+#define CSR_PICORVSPI_STAT1_BB_IN_SIZE 4
+#define CSR_PICORVSPI_STAT2_ADDR 0xe0005014L
+#define CSR_PICORVSPI_STAT2_SIZE 1
+static inline unsigned char picorvspi_stat2_read(void) {
+	unsigned char r = csr_readl(0xe0005014L);
+	return r;
+}
+#define CSR_PICORVSPI_STAT3_ADDR 0xe0005018L
+#define CSR_PICORVSPI_STAT3_SIZE 1
+static inline unsigned char picorvspi_stat3_read(void) {
+	unsigned char r = csr_readl(0xe0005018L);
+	return r;
+}
+#define CSR_PICORVSPI_STAT4_ADDR 0xe000501cL
+#define CSR_PICORVSPI_STAT4_SIZE 1
+static inline unsigned char picorvspi_stat4_read(void) {
+	unsigned char r = csr_readl(0xe000501cL);
+	return r;
+}
+
+/* reboot */
+#define CSR_REBOOT_BASE 0xe0006000L
+#define CSR_REBOOT_CTRL_ADDR 0xe0006000L
+#define CSR_REBOOT_CTRL_SIZE 1
+static inline unsigned char reboot_ctrl_read(void) {
+	unsigned char r = csr_readl(0xe0006000L);
+	return r;
+}
+static inline void reboot_ctrl_write(unsigned char value) {
+	csr_writel(value, 0xe0006000L);
+}
+#define CSR_REBOOT_CTRL_IMAGE_OFFSET 0
+#define CSR_REBOOT_CTRL_IMAGE_SIZE 2
+#define CSR_REBOOT_CTRL_KEY_OFFSET 2
+#define CSR_REBOOT_CTRL_KEY_SIZE 6
+#define CSR_REBOOT_ADDR_ADDR 0xe0006004L
+#define CSR_REBOOT_ADDR_SIZE 4
+static inline unsigned int reboot_addr_read(void) {
+	unsigned int r = csr_readl(0xe0006004L);
+	r <<= 8;
+	r |= csr_readl(0xe0006008L);
+	r <<= 8;
+	r |= csr_readl(0xe000600cL);
+	r <<= 8;
+	r |= csr_readl(0xe0006010L);
+	return r;
+}
+static inline void reboot_addr_write(unsigned int value) {
+	csr_writel(value >> 24, 0xe0006004L);
+	csr_writel(value >> 16, 0xe0006008L);
+	csr_writel(value >> 8, 0xe000600cL);
+	csr_writel(value, 0xe0006010L);
+}
+
+/* rgb */
+#define CSR_RGB_BASE 0xe0006800L
+#define CSR_RGB_DAT_ADDR 0xe0006800L
+#define CSR_RGB_DAT_SIZE 1
+static inline unsigned char rgb_dat_read(void) {
+	unsigned char r = csr_readl(0xe0006800L);
+	return r;
+}
+static inline void rgb_dat_write(unsigned char value) {
+	csr_writel(value, 0xe0006800L);
+}
+#define CSR_RGB_ADDR_ADDR 0xe0006804L
+#define CSR_RGB_ADDR_SIZE 1
+static inline unsigned char rgb_addr_read(void) {
+	unsigned char r = csr_readl(0xe0006804L);
+	return r;
+}
+static inline void rgb_addr_write(unsigned char value) {
+	csr_writel(value, 0xe0006804L);
+}
+#define CSR_RGB_CTRL_ADDR 0xe0006808L
+#define CSR_RGB_CTRL_SIZE 1
+static inline unsigned char rgb_ctrl_read(void) {
+	unsigned char r = csr_readl(0xe0006808L);
+	return r;
+}
+static inline void rgb_ctrl_write(unsigned char value) {
+	csr_writel(value, 0xe0006808L);
+}
+#define CSR_RGB_CTRL_EXE_OFFSET 0
+#define CSR_RGB_CTRL_EXE_SIZE 1
+#define CSR_RGB_CTRL_CURREN_OFFSET 1
+#define CSR_RGB_CTRL_CURREN_SIZE 1
+#define CSR_RGB_CTRL_RGBLEDEN_OFFSET 2
+#define CSR_RGB_CTRL_RGBLEDEN_SIZE 1
+#define CSR_RGB_CTRL_RRAW_OFFSET 3
+#define CSR_RGB_CTRL_RRAW_SIZE 1
+#define CSR_RGB_CTRL_GRAW_OFFSET 4
+#define CSR_RGB_CTRL_GRAW_SIZE 1
+#define CSR_RGB_CTRL_BRAW_OFFSET 5
+#define CSR_RGB_CTRL_BRAW_SIZE 1
+#define CSR_RGB_RAW_ADDR 0xe000680cL
+#define CSR_RGB_RAW_SIZE 1
+static inline unsigned char rgb_raw_read(void) {
+	unsigned char r = csr_readl(0xe000680cL);
+	return r;
+}
+static inline void rgb_raw_write(unsigned char value) {
+	csr_writel(value, 0xe000680cL);
+}
+#define CSR_RGB_RAW_R_OFFSET 0
+#define CSR_RGB_RAW_R_SIZE 1
+#define CSR_RGB_RAW_G_OFFSET 1
+#define CSR_RGB_RAW_G_SIZE 1
+#define CSR_RGB_RAW_B_OFFSET 2
+#define CSR_RGB_RAW_B_SIZE 1
+
+/* timer0 */
+#define CSR_TIMER0_BASE 0xe0002800L
+#define CSR_TIMER0_LOAD_ADDR 0xe0002800L
+#define CSR_TIMER0_LOAD_SIZE 4
+static inline unsigned int timer0_load_read(void) {
+	unsigned int r = csr_readl(0xe0002800L);
+	r <<= 8;
+	r |= csr_readl(0xe0002804L);
+	r <<= 8;
+	r |= csr_readl(0xe0002808L);
+	r <<= 8;
+	r |= csr_readl(0xe000280cL);
+	return r;
+}
+static inline void timer0_load_write(unsigned int value) {
+	csr_writel(value >> 24, 0xe0002800L);
+	csr_writel(value >> 16, 0xe0002804L);
+	csr_writel(value >> 8, 0xe0002808L);
+	csr_writel(value, 0xe000280cL);
+}
+#define CSR_TIMER0_RELOAD_ADDR 0xe0002810L
+#define CSR_TIMER0_RELOAD_SIZE 4
+static inline unsigned int timer0_reload_read(void) {
+	unsigned int r = csr_readl(0xe0002810L);
+	r <<= 8;
+	r |= csr_readl(0xe0002814L);
+	r <<= 8;
+	r |= csr_readl(0xe0002818L);
+	r <<= 8;
+	r |= csr_readl(0xe000281cL);
+	return r;
+}
+static inline void timer0_reload_write(unsigned int value) {
+	csr_writel(value >> 24, 0xe0002810L);
+	csr_writel(value >> 16, 0xe0002814L);
+	csr_writel(value >> 8, 0xe0002818L);
+	csr_writel(value, 0xe000281cL);
+}
+#define CSR_TIMER0_EN_ADDR 0xe0002820L
+#define CSR_TIMER0_EN_SIZE 1
+static inline unsigned char timer0_en_read(void) {
+	unsigned char r = csr_readl(0xe0002820L);
+	return r;
+}
+static inline void timer0_en_write(unsigned char value) {
+	csr_writel(value, 0xe0002820L);
+}
+#define CSR_TIMER0_UPDATE_VALUE_ADDR 0xe0002824L
+#define CSR_TIMER0_UPDATE_VALUE_SIZE 1
+static inline unsigned char timer0_update_value_read(void) {
+	unsigned char r = csr_readl(0xe0002824L);
+	return r;
+}
+static inline void timer0_update_value_write(unsigned char value) {
+	csr_writel(value, 0xe0002824L);
+}
+#define CSR_TIMER0_VALUE_ADDR 0xe0002828L
+#define CSR_TIMER0_VALUE_SIZE 4
+static inline unsigned int timer0_value_read(void) {
+	unsigned int r = csr_readl(0xe0002828L);
+	r <<= 8;
+	r |= csr_readl(0xe000282cL);
+	r <<= 8;
+	r |= csr_readl(0xe0002830L);
+	r <<= 8;
+	r |= csr_readl(0xe0002834L);
+	return r;
+}
+#define CSR_TIMER0_EV_STATUS_ADDR 0xe0002838L
+#define CSR_TIMER0_EV_STATUS_SIZE 1
+static inline unsigned char timer0_ev_status_read(void) {
+	unsigned char r = csr_readl(0xe0002838L);
+	return r;
+}
+static inline void timer0_ev_status_write(unsigned char value) {
+	csr_writel(value, 0xe0002838L);
+}
+#define CSR_TIMER0_EV_PENDING_ADDR 0xe000283cL
+#define CSR_TIMER0_EV_PENDING_SIZE 1
+static inline unsigned char timer0_ev_pending_read(void) {
+	unsigned char r = csr_readl(0xe000283cL);
+	return r;
+}
+static inline void timer0_ev_pending_write(unsigned char value) {
+	csr_writel(value, 0xe000283cL);
+}
+#define CSR_TIMER0_EV_ENABLE_ADDR 0xe0002840L
+#define CSR_TIMER0_EV_ENABLE_SIZE 1
+static inline unsigned char timer0_ev_enable_read(void) {
+	unsigned char r = csr_readl(0xe0002840L);
+	return r;
+}
+static inline void timer0_ev_enable_write(unsigned char value) {
+	csr_writel(value, 0xe0002840L);
+}
+
+/* touch */
+#define CSR_TOUCH_BASE 0xe0005800L
+#define CSR_TOUCH_O_ADDR 0xe0005800L
+#define CSR_TOUCH_O_SIZE 1
+static inline unsigned char touch_o_read(void) {
+	unsigned char r = csr_readl(0xe0005800L);
+	return r;
+}
+static inline void touch_o_write(unsigned char value) {
+	csr_writel(value, 0xe0005800L);
+}
+#define CSR_TOUCH_O_O_OFFSET 0
+#define CSR_TOUCH_O_O_SIZE 4
+#define CSR_TOUCH_OE_ADDR 0xe0005804L
+#define CSR_TOUCH_OE_SIZE 1
+static inline unsigned char touch_oe_read(void) {
+	unsigned char r = csr_readl(0xe0005804L);
+	return r;
+}
+static inline void touch_oe_write(unsigned char value) {
+	csr_writel(value, 0xe0005804L);
+}
+#define CSR_TOUCH_OE_OE_OFFSET 0
+#define CSR_TOUCH_OE_OE_SIZE 4
+#define CSR_TOUCH_I_ADDR 0xe0005808L
+#define CSR_TOUCH_I_SIZE 1
+static inline unsigned char touch_i_read(void) {
+	unsigned char r = csr_readl(0xe0005808L);
+	return r;
+}
+#define CSR_TOUCH_I_I_OFFSET 0
+#define CSR_TOUCH_I_I_SIZE 4
+
+/* usb */
+#define CSR_USB_BASE 0xe0004800L
+#define CSR_USB_PULLUP_OUT_ADDR 0xe0004800L
+#define CSR_USB_PULLUP_OUT_SIZE 1
+static inline unsigned char usb_pullup_out_read(void) {
+	unsigned char r = csr_readl(0xe0004800L);
+	return r;
+}
+static inline void usb_pullup_out_write(unsigned char value) {
+	csr_writel(value, 0xe0004800L);
+}
+#define CSR_USB_ADDRESS_ADDR 0xe0004804L
+#define CSR_USB_ADDRESS_SIZE 1
+static inline unsigned char usb_address_read(void) {
+	unsigned char r = csr_readl(0xe0004804L);
+	return r;
+}
+static inline void usb_address_write(unsigned char value) {
+	csr_writel(value, 0xe0004804L);
+}
+#define CSR_USB_ADDRESS_ADDR_OFFSET 0
+#define CSR_USB_ADDRESS_ADDR_SIZE 7
+#define CSR_USB_NEXT_EV_ADDR 0xe0004808L
+#define CSR_USB_NEXT_EV_SIZE 1
+static inline unsigned char usb_next_ev_read(void) {
+	unsigned char r = csr_readl(0xe0004808L);
+	return r;
+}
+#define CSR_USB_NEXT_EV_IN_OFFSET 0
+#define CSR_USB_NEXT_EV_IN_SIZE 1
+#define CSR_USB_NEXT_EV_OUT_OFFSET 1
+#define CSR_USB_NEXT_EV_OUT_SIZE 1
+#define CSR_USB_NEXT_EV_SETUP_OFFSET 2
+#define CSR_USB_NEXT_EV_SETUP_SIZE 1
+#define CSR_USB_NEXT_EV_RESET_OFFSET 3
+#define CSR_USB_NEXT_EV_RESET_SIZE 1
+#define CSR_USB_SETUP_DATA_ADDR 0xe000480cL
+#define CSR_USB_SETUP_DATA_SIZE 1
+static inline unsigned char usb_setup_data_read(void) {
+	unsigned char r = csr_readl(0xe000480cL);
+	return r;
+}
+#define CSR_USB_SETUP_DATA_DATA_OFFSET 0
+#define CSR_USB_SETUP_DATA_DATA_SIZE 8
+#define CSR_USB_SETUP_CTRL_ADDR 0xe0004810L
+#define CSR_USB_SETUP_CTRL_SIZE 1
+static inline unsigned char usb_setup_ctrl_read(void) {
+	unsigned char r = csr_readl(0xe0004810L);
+	return r;
+}
+static inline void usb_setup_ctrl_write(unsigned char value) {
+	csr_writel(value, 0xe0004810L);
+}
+#define CSR_USB_SETUP_CTRL_RESET_OFFSET 5
+#define CSR_USB_SETUP_CTRL_RESET_SIZE 1
+#define CSR_USB_SETUP_STATUS_ADDR 0xe0004814L
+#define CSR_USB_SETUP_STATUS_SIZE 1
+static inline unsigned char usb_setup_status_read(void) {
+	unsigned char r = csr_readl(0xe0004814L);
+	return r;
+}
+#define CSR_USB_SETUP_STATUS_EPNO_OFFSET 0
+#define CSR_USB_SETUP_STATUS_EPNO_SIZE 4
+#define CSR_USB_SETUP_STATUS_HAVE_OFFSET 4
+#define CSR_USB_SETUP_STATUS_HAVE_SIZE 1
+#define CSR_USB_SETUP_STATUS_PEND_OFFSET 5
+#define CSR_USB_SETUP_STATUS_PEND_SIZE 1
+#define CSR_USB_SETUP_STATUS_IS_IN_OFFSET 6
+#define CSR_USB_SETUP_STATUS_IS_IN_SIZE 1
+#define CSR_USB_SETUP_STATUS_DATA_OFFSET 7
+#define CSR_USB_SETUP_STATUS_DATA_SIZE 1
+#define CSR_USB_SETUP_EV_STATUS_ADDR 0xe0004818L
+#define CSR_USB_SETUP_EV_STATUS_SIZE 1
+static inline unsigned char usb_setup_ev_status_read(void) {
+	unsigned char r = csr_readl(0xe0004818L);
+	return r;
+}
+static inline void usb_setup_ev_status_write(unsigned char value) {
+	csr_writel(value, 0xe0004818L);
+}
+#define CSR_USB_SETUP_EV_PENDING_ADDR 0xe000481cL
+#define CSR_USB_SETUP_EV_PENDING_SIZE 1
+static inline unsigned char usb_setup_ev_pending_read(void) {
+	unsigned char r = csr_readl(0xe000481cL);
+	return r;
+}
+static inline void usb_setup_ev_pending_write(unsigned char value) {
+	csr_writel(value, 0xe000481cL);
+}
+#define CSR_USB_SETUP_EV_ENABLE_ADDR 0xe0004820L
+#define CSR_USB_SETUP_EV_ENABLE_SIZE 1
+static inline unsigned char usb_setup_ev_enable_read(void) {
+	unsigned char r = csr_readl(0xe0004820L);
+	return r;
+}
+static inline void usb_setup_ev_enable_write(unsigned char value) {
+	csr_writel(value, 0xe0004820L);
+}
+#define CSR_USB_IN_DATA_ADDR 0xe0004824L
+#define CSR_USB_IN_DATA_SIZE 1
+static inline unsigned char usb_in_data_read(void) {
+	unsigned char r = csr_readl(0xe0004824L);
+	return r;
+}
+static inline void usb_in_data_write(unsigned char value) {
+	csr_writel(value, 0xe0004824L);
+}
+#define CSR_USB_IN_DATA_DATA_OFFSET 0
+#define CSR_USB_IN_DATA_DATA_SIZE 8
+#define CSR_USB_IN_CTRL_ADDR 0xe0004828L
+#define CSR_USB_IN_CTRL_SIZE 1
+static inline unsigned char usb_in_ctrl_read(void) {
+	unsigned char r = csr_readl(0xe0004828L);
+	return r;
+}
+static inline void usb_in_ctrl_write(unsigned char value) {
+	csr_writel(value, 0xe0004828L);
+}
+#define CSR_USB_IN_CTRL_EPNO_OFFSET 0
+#define CSR_USB_IN_CTRL_EPNO_SIZE 4
+#define CSR_USB_IN_CTRL_RESET_OFFSET 5
+#define CSR_USB_IN_CTRL_RESET_SIZE 1
+#define CSR_USB_IN_CTRL_STALL_OFFSET 6
+#define CSR_USB_IN_CTRL_STALL_SIZE 1
+#define CSR_USB_IN_STATUS_ADDR 0xe000482cL
+#define CSR_USB_IN_STATUS_SIZE 1
+static inline unsigned char usb_in_status_read(void) {
+	unsigned char r = csr_readl(0xe000482cL);
+	return r;
+}
+#define CSR_USB_IN_STATUS_IDLE_OFFSET 0
+#define CSR_USB_IN_STATUS_IDLE_SIZE 1
+#define CSR_USB_IN_STATUS_HAVE_OFFSET 4
+#define CSR_USB_IN_STATUS_HAVE_SIZE 1
+#define CSR_USB_IN_STATUS_PEND_OFFSET 5
+#define CSR_USB_IN_STATUS_PEND_SIZE 1
+#define CSR_USB_IN_EV_STATUS_ADDR 0xe0004830L
+#define CSR_USB_IN_EV_STATUS_SIZE 1
+static inline unsigned char usb_in_ev_status_read(void) {
+	unsigned char r = csr_readl(0xe0004830L);
+	return r;
+}
+static inline void usb_in_ev_status_write(unsigned char value) {
+	csr_writel(value, 0xe0004830L);
+}
+#define CSR_USB_IN_EV_PENDING_ADDR 0xe0004834L
+#define CSR_USB_IN_EV_PENDING_SIZE 1
+static inline unsigned char usb_in_ev_pending_read(void) {
+	unsigned char r = csr_readl(0xe0004834L);
+	return r;
+}
+static inline void usb_in_ev_pending_write(unsigned char value) {
+	csr_writel(value, 0xe0004834L);
+}
+#define CSR_USB_IN_EV_ENABLE_ADDR 0xe0004838L
+#define CSR_USB_IN_EV_ENABLE_SIZE 1
+static inline unsigned char usb_in_ev_enable_read(void) {
+	unsigned char r = csr_readl(0xe0004838L);
+	return r;
+}
+static inline void usb_in_ev_enable_write(unsigned char value) {
+	csr_writel(value, 0xe0004838L);
+}
+#define CSR_USB_OUT_DATA_ADDR 0xe000483cL
+#define CSR_USB_OUT_DATA_SIZE 1
+static inline unsigned char usb_out_data_read(void) {
+	unsigned char r = csr_readl(0xe000483cL);
+	return r;
+}
+#define CSR_USB_OUT_DATA_DATA_OFFSET 0
+#define CSR_USB_OUT_DATA_DATA_SIZE 8
+#define CSR_USB_OUT_CTRL_ADDR 0xe0004840L
+#define CSR_USB_OUT_CTRL_SIZE 1
+static inline unsigned char usb_out_ctrl_read(void) {
+	unsigned char r = csr_readl(0xe0004840L);
+	return r;
+}
+static inline void usb_out_ctrl_write(unsigned char value) {
+	csr_writel(value, 0xe0004840L);
+}
+#define CSR_USB_OUT_CTRL_EPNO_OFFSET 0
+#define CSR_USB_OUT_CTRL_EPNO_SIZE 4
+#define CSR_USB_OUT_CTRL_ENABLE_OFFSET 4
+#define CSR_USB_OUT_CTRL_ENABLE_SIZE 1
+#define CSR_USB_OUT_CTRL_RESET_OFFSET 5
+#define CSR_USB_OUT_CTRL_RESET_SIZE 1
+#define CSR_USB_OUT_CTRL_STALL_OFFSET 6
+#define CSR_USB_OUT_CTRL_STALL_SIZE 1
+#define CSR_USB_OUT_STATUS_ADDR 0xe0004844L
+#define CSR_USB_OUT_STATUS_SIZE 1
+static inline unsigned char usb_out_status_read(void) {
+	unsigned char r = csr_readl(0xe0004844L);
+	return r;
+}
+#define CSR_USB_OUT_STATUS_EPNO_OFFSET 0
+#define CSR_USB_OUT_STATUS_EPNO_SIZE 4
+#define CSR_USB_OUT_STATUS_HAVE_OFFSET 4
+#define CSR_USB_OUT_STATUS_HAVE_SIZE 1
+#define CSR_USB_OUT_STATUS_PEND_OFFSET 5
+#define CSR_USB_OUT_STATUS_PEND_SIZE 1
+#define CSR_USB_OUT_EV_STATUS_ADDR 0xe0004848L
+#define CSR_USB_OUT_EV_STATUS_SIZE 1
+static inline unsigned char usb_out_ev_status_read(void) {
+	unsigned char r = csr_readl(0xe0004848L);
+	return r;
+}
+static inline void usb_out_ev_status_write(unsigned char value) {
+	csr_writel(value, 0xe0004848L);
+}
+#define CSR_USB_OUT_EV_PENDING_ADDR 0xe000484cL
+#define CSR_USB_OUT_EV_PENDING_SIZE 1
+static inline unsigned char usb_out_ev_pending_read(void) {
+	unsigned char r = csr_readl(0xe000484cL);
+	return r;
+}
+static inline void usb_out_ev_pending_write(unsigned char value) {
+	csr_writel(value, 0xe000484cL);
+}
+#define CSR_USB_OUT_EV_ENABLE_ADDR 0xe0004850L
+#define CSR_USB_OUT_EV_ENABLE_SIZE 1
+static inline unsigned char usb_out_ev_enable_read(void) {
+	unsigned char r = csr_readl(0xe0004850L);
+	return r;
+}
+static inline void usb_out_ev_enable_write(unsigned char value) {
+	csr_writel(value, 0xe0004850L);
+}
+#define CSR_USB_OUT_ENABLE_STATUS_ADDR 0xe0004854L
+#define CSR_USB_OUT_ENABLE_STATUS_SIZE 1
+static inline unsigned char usb_out_enable_status_read(void) {
+	unsigned char r = csr_readl(0xe0004854L);
+	return r;
+}
+#define CSR_USB_OUT_STALL_STATUS_ADDR 0xe0004858L
+#define CSR_USB_OUT_STALL_STATUS_SIZE 1
+static inline unsigned char usb_out_stall_status_read(void) {
+	unsigned char r = csr_readl(0xe0004858L);
+	return r;
+}
+
+/* version */
+#define CSR_VERSION_BASE 0xe0007000L
+#define CSR_VERSION_MAJOR_ADDR 0xe0007000L
+#define CSR_VERSION_MAJOR_SIZE 1
+static inline unsigned char version_major_read(void) {
+	unsigned char r = csr_readl(0xe0007000L);
+	return r;
+}
+#define CSR_VERSION_MINOR_ADDR 0xe0007004L
+#define CSR_VERSION_MINOR_SIZE 1
+static inline unsigned char version_minor_read(void) {
+	unsigned char r = csr_readl(0xe0007004L);
+	return r;
+}
+#define CSR_VERSION_REVISION_ADDR 0xe0007008L
+#define CSR_VERSION_REVISION_SIZE 1
+static inline unsigned char version_revision_read(void) {
+	unsigned char r = csr_readl(0xe0007008L);
+	return r;
+}
+#define CSR_VERSION_GITREV_ADDR 0xe000700cL
+#define CSR_VERSION_GITREV_SIZE 4
+static inline unsigned int version_gitrev_read(void) {
+	unsigned int r = csr_readl(0xe000700cL);
+	r <<= 8;
+	r |= csr_readl(0xe0007010L);
+	r <<= 8;
+	r |= csr_readl(0xe0007014L);
+	r <<= 8;
+	r |= csr_readl(0xe0007018L);
+	return r;
+}
+#define CSR_VERSION_GITEXTRA_ADDR 0xe000701cL
+#define CSR_VERSION_GITEXTRA_SIZE 2
+static inline unsigned short int version_gitextra_read(void) {
+	unsigned short int r = csr_readl(0xe000701cL);
+	r <<= 8;
+	r |= csr_readl(0xe0007020L);
+	return r;
+}
+#define CSR_VERSION_DIRTY_ADDR 0xe0007024L
+#define CSR_VERSION_DIRTY_SIZE 1
+static inline unsigned char version_dirty_read(void) {
+	unsigned char r = csr_readl(0xe0007024L);
+	return r;
+}
+#define CSR_VERSION_DIRTY_DIRTY_OFFSET 0
+#define CSR_VERSION_DIRTY_DIRTY_SIZE 1
+#define CSR_VERSION_MODEL_ADDR 0xe0007028L
+#define CSR_VERSION_MODEL_SIZE 1
+static inline unsigned char version_model_read(void) {
+	unsigned char r = csr_readl(0xe0007028L);
+	return r;
+}
+#define CSR_VERSION_MODEL_MODEL_OFFSET 0
+#define CSR_VERSION_MODEL_MODEL_SIZE 8
+#define CSR_VERSION_SEED_ADDR 0xe000702cL
+#define CSR_VERSION_SEED_SIZE 4
+static inline unsigned int version_seed_read(void) {
+	unsigned int r = csr_readl(0xe000702cL);
+	r <<= 8;
+	r |= csr_readl(0xe0007030L);
+	r <<= 8;
+	r |= csr_readl(0xe0007034L);
+	r <<= 8;
+	r |= csr_readl(0xe0007038L);
+	return r;
+}
+
+/* constants */
+#define TIMER0_INTERRUPT 2
+static inline int timer0_interrupt_read(void) {
+	return 2;
+}
+#define USB_INTERRUPT 3
+static inline int usb_interrupt_read(void) {
+	return 3;
+}
+#define CONFIG_BITSTREAM_SYNC_HEADER1 2123999870
+static inline int config_bitstream_sync_header1_read(void) {
+	return 2123999870;
+}
+#define CONFIG_BITSTREAM_SYNC_HEADER2 2125109630
+static inline int config_bitstream_sync_header2_read(void) {
+	return 2125109630;
+}
+#define CONFIG_CLOCK_FREQUENCY 12000000
+static inline int config_clock_frequency_read(void) {
+	return 12000000;
+}
+#define CONFIG_CPU_RESET_ADDR 0
+static inline int config_cpu_reset_addr_read(void) {
+	return 0;
+}
+#define CONFIG_CPU_TYPE "VEXRISCV"
+static inline const char * config_cpu_type_read(void) {
+	return "VEXRISCV";
+}
+#define CONFIG_CPU_TYPE_VEXRISCV 1
+static inline int config_cpu_type_vexriscv_read(void) {
+	return 1;
+}
+#define CONFIG_CPU_VARIANT "MIN"
+static inline const char * config_cpu_variant_read(void) {
+	return "MIN";
+}
+#define CONFIG_CPU_VARIANT_MIN 1
+static inline int config_cpu_variant_min_read(void) {
+	return 1;
+}
+#define CONFIG_CSR_ALIGNMENT 32
+static inline int config_csr_alignment_read(void) {
+	return 32;
+}
+#define CONFIG_CSR_DATA_WIDTH 8
+static inline int config_csr_data_width_read(void) {
+	return 8;
+}
+
+#endif

hw/bsp/fomu/include/hw/common.h

@@ -0,0 +1,33 @@
+#ifndef _HW_COMMON_H_
+#define _HW_COMMON_H_
+#include <stdint.h>
+static inline void csr_writeb(uint8_t value, uint32_t addr)
+{
+	*((volatile uint8_t *)addr) = value;
+}
+
+static inline uint8_t csr_readb(uint32_t addr)
+{
+	return *(volatile uint8_t *)addr;
+}
+
+static inline void csr_writew(uint16_t value, uint32_t addr)
+{
+	*((volatile uint16_t *)addr) = value;
+}
+
+static inline uint16_t csr_readw(uint32_t addr)
+{
+	return *(volatile uint16_t *)addr;
+}
+
+static inline void csr_writel(uint32_t value, uint32_t addr)
+{
+	*((volatile uint32_t *)addr) = value;
+}
+
+static inline uint32_t csr_readl(uint32_t addr)
+{
+	return *(volatile uint32_t *)addr;
+}
+#endif /* _HW_COMMON_H_ */

hw/bsp/fomu/include/irq.h

@@ -0,0 +1,71 @@
+#ifndef __IRQ_H
+#define __IRQ_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#define CSR_MSTATUS_MIE 0x8
+
+#define CSR_IRQ_MASK 0xBC0
+#define CSR_IRQ_PENDING 0xFC0
+
+#define CSR_DCACHE_INFO 0xCC0
+
+#define csrr(reg) ({ unsigned long __tmp; \
+  asm volatile ("csrr %0, " #reg : "=r"(__tmp)); \
+  __tmp; })
+
+#define csrw(reg, val) ({ \
+  if (__builtin_constant_p(val) && (unsigned long)(val) < 32) \
+	asm volatile ("csrw " #reg ", %0" :: "i"(val)); \
+  else \
+	asm volatile ("csrw " #reg ", %0" :: "r"(val)); })
+
+#define csrs(reg, bit) ({ \
+  if (__builtin_constant_p(bit) && (unsigned long)(bit) < 32) \
+	asm volatile ("csrrs x0, " #reg ", %0" :: "i"(bit)); \
+  else \
+	asm volatile ("csrrs x0, " #reg ", %0" :: "r"(bit)); })
+
+#define csrc(reg, bit) ({ \
+  if (__builtin_constant_p(bit) && (unsigned long)(bit) < 32) \
+	asm volatile ("csrrc x0, " #reg ", %0" :: "i"(bit)); \
+  else \
+	asm volatile ("csrrc x0, " #reg ", %0" :: "r"(bit)); })
+
+static inline unsigned int irq_getie(void)
+{
+	return (csrr(mstatus) & CSR_MSTATUS_MIE) != 0;
+}
+
+static inline void irq_setie(unsigned int ie)
+{
+	if(ie) csrs(mstatus,CSR_MSTATUS_MIE); else csrc(mstatus,CSR_MSTATUS_MIE);
+}
+
+static inline unsigned int irq_getmask(void)
+{
+	unsigned int mask;
+	asm volatile ("csrr %0, %1" : "=r"(mask) : "i"(CSR_IRQ_MASK));
+	return mask;
+}
+
+static inline void irq_setmask(unsigned int mask)
+{
+	asm volatile ("csrw %0, %1" :: "i"(CSR_IRQ_MASK), "r"(mask));
+}
+
+static inline unsigned int irq_pending(void)
+{
+	unsigned int pending;
+	asm volatile ("csrr %0, %1" : "=r"(pending) : "i"(CSR_IRQ_PENDING));
+	return pending;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __IRQ_H */

hw/bsp/fomu/output_format.ld

@@ -0,0 +1 @@
+OUTPUT_FORMAT("elf32-littleriscv")

hw/bsp/fomu/regions.ld

@@ -0,0 +1,6 @@
+MEMORY {
+	csr : ORIGIN = 0x60000000, LENGTH = 0x01000000
+	vexriscv_debug : ORIGIN = 0xf00f0000, LENGTH = 0x00000100
+	sram : ORIGIN = 0x10000000, LENGTH = 0x00020000
+	rom : ORIGIN = 0x00000000, LENGTH = 0x00002000
+}

src/common/tusb_verify.h

@@ -90,9 +90,13 @@
     volatile uint32_t* ARM_CM_DHCSR =  ((volatile uint32_t*) 0xE000EDF0UL); /* Cortex M CoreDebug->DHCSR */ \
     if ( (*ARM_CM_DHCSR) & 1UL ) __asm("BKPT #0\n"); /* Only halt mcu if debugger is attached */            \
   } while(0)
+#else
+#if defined(__riscv)
+  #define TU_BREAKPOINT() do { __asm("ebreak\n"); } while(0)
 #else
   #define TU_BREAKPOINT()
 #endif
+#endif
 
 /*------------------------------------------------------------------*/
 /* Macro Generator

src/portable/valentyusb/eptri/dcd_eptri.c

@@ -0,0 +1,638 @@
+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#ifndef DEBUG
+#define DEBUG 0
+#endif
+
+#ifndef LOG_USB
+#define LOG_USB 0
+#endif
+
+#include "tusb_option.h"
+
+#if TUSB_OPT_DEVICE_ENABLED && (CFG_TUSB_MCU == OPT_MCU_VALENTYUSB_EPTRI)
+
+#include "device/dcd.h"
+#include "dcd_eptri.h"
+#include "csr.h"
+#include "irq.h"
+void fomu_error(uint32_t line);
+
+#if LOG_USB
+struct usb_log {
+  uint8_t ep_num;
+  uint8_t size;
+  uint8_t data[66];
+};
+__attribute__((used))
+struct usb_log usb_log[128];
+__attribute__((used))
+uint8_t usb_log_offset;
+
+struct xfer_log {
+  uint8_t ep_num;
+  uint16_t size;
+};
+__attribute__((used))
+struct xfer_log xfer_log[64];
+__attribute__((used))
+uint8_t xfer_log_offset;
+
+__attribute__((used))
+struct xfer_log queue_log[64];
+__attribute__((used))
+uint8_t queue_log_offset;
+#endif
+
+//--------------------------------------------------------------------+
+// SIE Command
+//--------------------------------------------------------------------+
+
+#define EP_SIZE 64
+
+uint16_t volatile rx_buffer_offset[16];
+uint8_t volatile * rx_buffer[16];
+uint16_t volatile rx_buffer_max[16];
+
+volatile uint8_t tx_ep;
+volatile bool tx_active;
+volatile uint16_t tx_buffer_offset[16];
+uint8_t volatile * tx_buffer[16];
+volatile uint16_t tx_buffer_max[16];
+volatile uint8_t reset_count;
+
+#if DEBUG
+__attribute__((used)) uint8_t volatile * last_tx_buffer;
+__attribute__((used)) volatile uint8_t last_tx_ep;
+uint8_t setup_packet_bfr[10];
+#endif
+
+//--------------------------------------------------------------------+
+// PIPE HELPER
+//--------------------------------------------------------------------+
+
+static bool advance_tx_ep(void) {
+  // Move on to the next transmit buffer in a round-robin manner
+  uint8_t prev_tx_ep = tx_ep;
+  for (tx_ep = (tx_ep + 1) & 0xf; tx_ep != prev_tx_ep; tx_ep = ((tx_ep + 1) & 0xf)) {
+    if (tx_buffer[tx_ep])
+      return true;
+  }
+  if (!tx_buffer[tx_ep])
+    return false;
+  return true;
+}
+
+#if LOG_USB
+void xfer_log_append(uint8_t ep_num, uint16_t sz) {
+  xfer_log[xfer_log_offset].ep_num = ep_num;
+  xfer_log[xfer_log_offset].size = sz;
+  xfer_log_offset++;
+  if (xfer_log_offset >= sizeof(xfer_log)/sizeof(*xfer_log))
+    xfer_log_offset = 0;
+}
+
+void queue_log_append(uint8_t ep_num, uint16_t sz) {
+  queue_log[queue_log_offset].ep_num = ep_num;
+  queue_log[queue_log_offset].size = sz;
+  queue_log_offset++;
+  if (queue_log_offset >= sizeof(queue_log)/sizeof(*queue_log))
+    queue_log_offset = 0;
+}
+#endif
+
+static void tx_more_data(void) {
+  // Send more data
+  uint8_t added_bytes;
+  for (added_bytes = 0; (added_bytes < EP_SIZE) && (tx_buffer_offset[tx_ep] < tx_buffer_max[tx_ep]); added_bytes++) {
+#if LOG_USB
+    usb_log[usb_log_offset].data[added_bytes] = tx_buffer[tx_ep][tx_buffer_offset[tx_ep]];
+#endif
+    usb_in_data_write(tx_buffer[tx_ep][tx_buffer_offset[tx_ep]++]);
+  }
+
+#if LOG_USB
+  usb_log[usb_log_offset].ep_num = tu_edpt_addr(tx_ep, TUSB_DIR_IN);
+  usb_log[usb_log_offset].size = added_bytes;
+  usb_log_offset++;
+  if (usb_log_offset >= sizeof(usb_log)/sizeof(*usb_log))
+    usb_log_offset = 0;
+#endif
+
+  // Updating the epno queues the data
+  usb_in_ctrl_write(tx_ep & 0xf);
+}
+
+static void process_tx(void) {
+#if DEBUG
+  // If the system isn't idle, then something is very wrong.
+  uint8_t in_status = usb_in_status_read();
+  if (!(in_status & (1 << CSR_USB_IN_STATUS_IDLE_OFFSET)))
+    fomu_error(__LINE__);
+#endif
+
+  // If the buffer is now empty, search for the next buffer to fill.
+  if (!tx_buffer[tx_ep]) {
+    if (advance_tx_ep())
+      tx_more_data();
+    else
+      tx_active = false;
+    return;
+  }
+
+  if (tx_buffer_offset[tx_ep] >= tx_buffer_max[tx_ep]) {
+#if DEBUG
+    last_tx_buffer = tx_buffer[tx_ep];
+    last_tx_ep = tx_ep;
+#endif
+    tx_buffer[tx_ep] = NULL;
+    uint16_t xferred_bytes = tx_buffer_max[tx_ep];
+    uint8_t xferred_ep = tx_ep;
+
+    if (!advance_tx_ep())
+      tx_active = false;
+#if LOG_USB
+    xfer_log_append(tu_edpt_addr(xferred_ep, TUSB_DIR_IN), xferred_bytes);
+#endif
+    dcd_event_xfer_complete(0, tu_edpt_addr(xferred_ep, TUSB_DIR_IN), xferred_bytes, XFER_RESULT_SUCCESS, true);
+    if (!tx_active)
+      return;
+  }
+
+  tx_more_data();
+  return;
+}
+
+static void process_rx(void) {
+  uint8_t out_status = usb_out_status_read();
+#if DEBUG
+  // If the OUT handler is still waiting to send, don't do anything.
+  if (!(out_status & (1 << CSR_USB_OUT_STATUS_HAVE_OFFSET)))
+    fomu_error(__LINE__);
+    // return;
+#endif
+  uint8_t rx_ep = (out_status >> CSR_USB_OUT_STATUS_EPNO_OFFSET) & 0xf;
+
+  // If the destination buffer doesn't exist, don't drain the hardware
+  // fifo.  Note that this can cause deadlocks if the host is waiting
+  // on some other endpoint's data!
+#if DEBUG
+  if (rx_buffer[rx_ep] == NULL) {
+    fomu_error(__LINE__);
+    return;
+  }
+#endif
+
+  // Drain the FIFO into the destination buffer
+  uint32_t total_read = 0;
+  uint32_t current_offset = rx_buffer_offset[rx_ep];
+#if DEBUG
+  uint8_t test_buffer[256];
+  memset(test_buffer, 0, sizeof(test_buffer));
+  if (current_offset > rx_buffer_max[rx_ep])
+    fomu_error(__LINE__);
+#endif
+#if LOG_USB
+  usb_log[usb_log_offset].ep_num = tu_edpt_addr(rx_ep, TUSB_DIR_OUT);
+  usb_log[usb_log_offset].size = 0;
+#endif
+  while (usb_out_status_read() & (1 << CSR_USB_OUT_STATUS_HAVE_OFFSET)) {
+    uint8_t c = usb_out_data_read();
+#if DEBUG
+    test_buffer[total_read] = c;
+#endif
+    total_read++;
+    if ((rx_buffer_offset[rx_ep] + current_offset) < rx_buffer_max[rx_ep]) {
+#if LOG_USB
+      usb_log[usb_log_offset].data[usb_log[usb_log_offset].size++] = c;
+#endif
+      if (rx_buffer[rx_ep] != (volatile uint8_t *)0xffffffff)
+        rx_buffer[rx_ep][current_offset++] = c;
+    }
+  }
+#if LOG_USB
+  usb_log_offset++;
+  if (usb_log_offset >= sizeof(usb_log)/sizeof(*usb_log))
+    usb_log_offset = 0;
+#endif
+#if DEBUG
+  if (total_read > 66)
+    fomu_error(__LINE__);
+  if (total_read < 2)
+    total_read = 2;
+    // fomu_error(__LINE__);
+#endif
+
+  // Strip off the CRC16
+  rx_buffer_offset[rx_ep] += (total_read - 2);
+  if (rx_buffer_offset[rx_ep] > rx_buffer_max[rx_ep])
+    rx_buffer_offset[rx_ep] = rx_buffer_max[rx_ep];
+
+  // If there's no more data, complete the transfer to tinyusb
+  if ((rx_buffer_max[rx_ep] == rx_buffer_offset[rx_ep])
+  // ZLP with less than the total amount of data
+  || ((total_read == 2) && ((rx_buffer_offset[rx_ep] & 63) == 0))
+  // Short read, but not a full packet
+  || (((rx_buffer_offset[rx_ep] & 63) != 0) && (total_read < 66))) {
+#if DEBUG
+    if (rx_buffer[rx_ep] == NULL)
+      fomu_error(__LINE__);
+#endif
+
+    // Free up this buffer.
+    rx_buffer[rx_ep] = NULL;
+    uint16_t len = rx_buffer_offset[rx_ep];
+
+#if DEBUG
+    // Validate that all enabled endpoints have buffers,
+    // and no disabled endpoints have buffers.
+    uint16_t ep_en_mask = usb_out_enable_status_read();
+    int i;
+    for (i = 0; i < 16; i++) {
+      if ((!!(ep_en_mask & (1 << i))) ^ (!!(rx_buffer[i]))) {
+        uint8_t new_status = usb_out_status_read();
+        // Another IRQ came in while we were processing, so ignore this endpoint.
+        if ((new_status & 0x20) && ((new_status & 0xf) == i))
+          continue;
+        fomu_error(__LINE__);
+      }
+    }
+#endif
+#if LOG_USB
+    xfer_log_append(tu_edpt_addr(rx_ep, TUSB_DIR_OUT), len);
+#endif
+    dcd_event_xfer_complete(0, tu_edpt_addr(rx_ep, TUSB_DIR_OUT), len, XFER_RESULT_SUCCESS, true);
+  }
+  else {
+    // If there's more data, re-enable data reception on this endpoint
+    usb_out_ctrl_write((1 << CSR_USB_OUT_CTRL_ENABLE_OFFSET) | rx_ep);
+  }
+
+  // Now that the buffer is drained, clear the pending IRQ.
+  usb_out_ev_pending_write(usb_out_ev_pending_read());
+}
+
+//--------------------------------------------------------------------+
+// CONTROLLER API
+//--------------------------------------------------------------------+
+
+static void dcd_reset(void)
+{
+  reset_count++;
+  usb_setup_ev_enable_write(0);
+  usb_in_ev_enable_write(0);
+  usb_out_ev_enable_write(0);
+
+  usb_address_write(0);
+
+  // Reset all three FIFO handlers
+  usb_setup_ctrl_write(1 << CSR_USB_SETUP_CTRL_RESET_OFFSET);
+  usb_in_ctrl_write(1 << CSR_USB_IN_CTRL_RESET_OFFSET);
+  usb_out_ctrl_write(1 << CSR_USB_OUT_CTRL_RESET_OFFSET);
+
+  memset((void *)rx_buffer, 0, sizeof(rx_buffer));
+  memset((void *)rx_buffer_max, 0, sizeof(rx_buffer_max));
+  memset((void *)rx_buffer_offset, 0, sizeof(rx_buffer_offset));
+
+  memset((void *)tx_buffer, 0, sizeof(tx_buffer));
+  memset((void *)tx_buffer_max, 0, sizeof(tx_buffer_max));
+  memset((void *)tx_buffer_offset, 0, sizeof(tx_buffer_offset));
+  tx_ep = 0;
+  tx_active = false;
+
+  // Enable all event handlers and clear their contents
+  usb_setup_ev_pending_write(0xff);
+  usb_in_ev_pending_write(0xff);
+  usb_out_ev_pending_write(0xff);
+  usb_in_ev_enable_write(1);
+  usb_out_ev_enable_write(1);
+  usb_setup_ev_enable_write(3);
+
+  dcd_event_bus_signal(0, DCD_EVENT_BUS_RESET, true);
+}
+
+// Initializes the USB peripheral for device mode and enables it.
+void dcd_init(uint8_t rhport)
+{
+  (void) rhport;
+
+  usb_pullup_out_write(0);
+
+  // Enable all event handlers and clear their contents
+  usb_setup_ev_pending_write(usb_setup_ev_pending_read());
+  usb_in_ev_pending_write(usb_in_ev_pending_read());
+  usb_out_ev_pending_write(usb_out_ev_pending_read());
+  usb_in_ev_enable_write(1);
+  usb_out_ev_enable_write(1);
+  usb_setup_ev_enable_write(3);
+
+  // Turn on the external pullup
+  usb_pullup_out_write(1);
+}
+
+// Enables or disables the USB device interrupt(s). May be used to
+// prevent concurrency issues when mutating data structures shared
+// between main code and the interrupt handler.
+void dcd_int_enable(uint8_t rhport)
+{
+  (void) rhport;
+	irq_setmask(irq_getmask() | (1 << USB_INTERRUPT));
+}
+
+void dcd_int_disable(uint8_t rhport)
+{
+  (void) rhport;
+  irq_setmask(irq_getmask() & ~(1 << USB_INTERRUPT));
+}
+
+// Called when the device is given a new bus address.
+void dcd_set_address(uint8_t rhport, uint8_t dev_addr)
+{
+  // Respond with ACK status first before changing device address
+  dcd_edpt_xfer(rhport, tu_edpt_addr(0, TUSB_DIR_IN), NULL, 0);
+
+  // Wait for the response packet to get sent
+  while (tx_active)
+    ;
+
+  // Activate the new address
+  usb_address_write(dev_addr);
+}
+
+// Called when the device received SET_CONFIG request, you can leave this
+// empty if your peripheral does not require any specific action.
+void dcd_set_config(uint8_t rhport, uint8_t config_num)
+{
+  (void) rhport;
+  (void) config_num;
+}
+
+// Called to remote wake up host when suspended (e.g hid keyboard)
+void dcd_remote_wakeup(uint8_t rhport)
+{
+  (void) rhport;
+}
+
+//--------------------------------------------------------------------+
+// DCD Endpoint Port
+//--------------------------------------------------------------------+
+bool dcd_edpt_open(uint8_t rhport, tusb_desc_endpoint_t const * p_endpoint_desc)
+{
+  (void) rhport;
+  uint8_t ep_num = tu_edpt_number(p_endpoint_desc->bEndpointAddress);
+  uint8_t ep_dir = tu_edpt_dir(p_endpoint_desc->bEndpointAddress);
+
+  if (p_endpoint_desc->bmAttributes.xfer == TUSB_XFER_ISOCHRONOUS)
+    return false; // Not supported
+
+  if (ep_dir == TUSB_DIR_OUT) {
+    rx_buffer_offset[ep_num] = 0;
+    rx_buffer_max[ep_num] = 0;
+    rx_buffer[ep_num] = NULL;
+  }
+
+  else if (ep_dir == TUSB_DIR_OUT) {
+    tx_buffer_offset[ep_num] = 0;
+    tx_buffer_max[ep_num] = 0;
+    tx_buffer[ep_num] = NULL;
+  }
+
+  return true;
+}
+
+void dcd_edpt_stall(uint8_t rhport, uint8_t ep_addr)
+{
+  (void) rhport;
+
+  if (tu_edpt_dir(ep_addr) == TUSB_DIR_OUT) {
+    uint8_t enable = 0;
+    if (rx_buffer[ep_addr])
+      enable = 1;
+    usb_out_ctrl_write((1 << CSR_USB_OUT_CTRL_STALL_OFFSET) | (enable << CSR_USB_OUT_CTRL_ENABLE_OFFSET) | tu_edpt_number(ep_addr));
+  }
+  else
+    usb_in_ctrl_write((1 << CSR_USB_IN_CTRL_STALL_OFFSET) | tu_edpt_number(ep_addr));
+}
+
+void dcd_edpt_clear_stall(uint8_t rhport, uint8_t ep_addr)
+{
+  (void) rhport;
+  if (tu_edpt_dir(ep_addr) == TUSB_DIR_OUT) {
+    uint8_t enable = 0;
+    if (rx_buffer[ep_addr])
+      enable = 1;
+    usb_out_ctrl_write((0 << CSR_USB_OUT_CTRL_STALL_OFFSET) | (enable << CSR_USB_OUT_CTRL_ENABLE_OFFSET) | tu_edpt_number(ep_addr));
+  }
+  // IN endpoints will get unstalled when more data is written.
+}
+
+bool dcd_edpt_xfer (uint8_t rhport, uint8_t ep_addr, uint8_t* buffer, uint16_t total_bytes)
+{
+  (void)rhport;
+  uint8_t ep_num = tu_edpt_number(ep_addr);
+  uint8_t ep_dir = tu_edpt_dir(ep_addr);
+  TU_ASSERT(ep_num < 16);
+
+  // Give a nonzero buffer when we transmit 0 bytes, so that the
+  // system doesn't think the endpoint is idle.
+  if ((buffer == NULL) && (total_bytes == 0)) {
+    buffer = (uint8_t *)0xffffffff;
+  }
+
+  TU_ASSERT(buffer != NULL);
+
+  if (ep_dir == TUSB_DIR_IN) {
+    // Wait for the tx pipe to free up
+    uint8_t previous_reset_count = reset_count;
+    // Continue until the buffer is empty, the system is idle, and the fifo is empty.
+    while (tx_buffer[ep_num] != NULL)
+      ;
+
+    dcd_int_disable(0);
+#if LOG_USB
+    queue_log_append(ep_addr, total_bytes);
+#endif
+    // If a reset happens while we're waiting, abort the transfer
+    if (previous_reset_count != reset_count)
+      return true;
+
+    TU_ASSERT(tx_buffer[ep_num] == NULL);
+    tx_buffer_offset[ep_num] = 0;
+    tx_buffer_max[ep_num] = total_bytes;
+    tx_buffer[ep_num] = buffer;
+
+    // If the current buffer is NULL, then that means the tx logic is idle.
+    // Update the tx_ep to point to our endpoint number and queue the data.
+    // Otherwise, let it be and it'll get picked up after the next transfer
+    // finishes.
+    if (!tx_active) {
+      tx_ep = ep_num;
+      tx_active = true;
+      tx_more_data();
+    }
+    dcd_int_enable(0);
+  }
+
+  else if (ep_dir == TUSB_DIR_OUT) {
+    while (rx_buffer[ep_num] != NULL)
+      ;
+
+    TU_ASSERT(rx_buffer[ep_num] == NULL);
+    dcd_int_disable(0);
+#if LOG_USB
+    queue_log_append(ep_addr, total_bytes);
+#endif
+    rx_buffer[ep_num] = buffer;
+    rx_buffer_offset[ep_num] = 0;
+    rx_buffer_max[ep_num] = total_bytes;
+
+    // Enable receiving on this particular endpoint
+    usb_out_ctrl_write((1 << CSR_USB_OUT_CTRL_ENABLE_OFFSET) | ep_num);
+#if DEBUG
+    uint16_t ep_en_mask = usb_out_enable_status_read();
+    int i;
+    for (i = 0; i < 16; i++) {
+      if ((!!(ep_en_mask & (1 << i))) ^ (!!(rx_buffer[i]))) {
+        if (rx_buffer[i] && usb_out_ev_pending_read() && (usb_out_status_read() & 0xf) == i)
+          continue;
+        fomu_error(__LINE__);
+      }
+    }
+#endif
+    dcd_int_enable(0);
+  }
+  return true;
+}
+
+//--------------------------------------------------------------------+
+// ISR
+//--------------------------------------------------------------------+
+
+static void handle_out(void)
+{
+  // An "OUT" transaction just completed so we have new data.
+  // (But only if we can accept the data)
+#if DEBUG
+  if (!usb_out_ev_pending_read())
+    fomu_error(__LINE__);
+  if (!usb_out_ev_enable_read())
+    fomu_error(__LINE__);
+#endif
+  process_rx();
+}
+
+static void handle_in(void)
+{
+#if DEBUG
+  if (!usb_in_ev_pending_read())
+    fomu_error(__LINE__);
+  if (!usb_in_ev_enable_read())
+    fomu_error(__LINE__);
+#endif
+  usb_in_ev_pending_write(usb_in_ev_pending_read());
+  process_tx();
+}
+
+static void handle_reset(void)
+{
+#if DEBUG
+  uint8_t setup_pending   = usb_setup_ev_pending_read() & usb_setup_ev_enable_read();
+  if (!(setup_pending & 2))
+    fomu_error(__LINE__);
+#endif
+  usb_setup_ev_pending_write(2);
+
+  // This event means a bus reset occurred.  Reset everything, and
+  // abandon any further processing.
+  dcd_reset();
+}
+
+static void handle_setup(void)
+{
+#if !DEBUG
+  uint8_t setup_packet_bfr[10];
+#endif
+
+#if DEBUG
+  uint8_t setup_pending   = usb_setup_ev_pending_read() & usb_setup_ev_enable_read();
+  if (!(setup_pending & 1))
+    fomu_error(__LINE__);
+#endif
+
+  // We got a SETUP packet.  Copy it to the setup buffer and clear
+  // the "pending" bit.
+  // Setup packets are always 8 bytes, plus two bytes of crc16.
+  uint32_t setup_length = 0;
+
+#if DEBUG
+  if (!(usb_setup_status_read() & (1 << CSR_USB_SETUP_STATUS_HAVE_OFFSET)))
+    fomu_error(__LINE__);
+#endif
+
+  while (usb_setup_status_read() & (1 << CSR_USB_SETUP_STATUS_HAVE_OFFSET)) {
+    uint8_t c = usb_setup_data_read();
+    if (setup_length < sizeof(setup_packet_bfr))
+      setup_packet_bfr[setup_length] = c;
+    setup_length++;
+  }
+
+  // If we have 10 bytes, that's a full SETUP packet plus CRC16.
+  // Otherwise, it was an RX error.
+  if (setup_length == 10) {
+    dcd_event_setup_received(0, setup_packet_bfr, true);
+  }
+#if DEBUG
+  else {
+    fomu_error(__LINE__);
+  }
+#endif
+
+  usb_setup_ev_pending_write(1);
+}
+void hal_dcd_isr(uint8_t rhport)
+{
+  (void)rhport;
+  uint8_t next_ev;
+  while ((next_ev = usb_next_ev_read())) {
+    switch (next_ev) {
+    case 1 << CSR_USB_NEXT_EV_IN_OFFSET:
+      handle_in();
+      break;
+    case 1 << CSR_USB_NEXT_EV_OUT_OFFSET:
+      handle_out();
+      break;
+    case 1 << CSR_USB_NEXT_EV_SETUP_OFFSET:
+      handle_setup();
+      break;
+    case 1 << CSR_USB_NEXT_EV_RESET_OFFSET:
+      handle_reset();
+      break;
+    }
+  }
+}
+
+#endif

src/portable/valentyusb/eptri/dcd_eptri.h

@@ -0,0 +1,39 @@
+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#ifndef _TUSB_DCD_VALENTYUSB_EPTRI_H_
+#define _TUSB_DCD_VALENTYUSB_EPTRI_H_
+
+#include "common/tusb_common.h"
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* _TUSB_DCD_VALENTYUSB_EPTRI_H_ */

src/portable/valentyusb/eptri/hal_eptri.c

@@ -0,0 +1,33 @@
+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#include "common/tusb_common.h"
+
+#if (CFG_TUSB_MCU == OPT_MCU_VALENTYUSB_EPTRI)
+
+// No HAL-specific stuff here!
+
+#endif

src/tusb_option.h

@@ -70,6 +70,8 @@
 
 #define OPT_MCU_CXD56         400 ///< SONY CXD56
 
+#define OPT_MCU_VALENTYUSB_EPTRI 600 ///< Fomu eptri config
+
 /** @} */
 
 /** \defgroup group_supported_os Supported RTOS