rpi start. doesn't work

hw/bsp/raspberrypi4/boards/raspberrypi_cm4/board.h

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+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020, 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 BOARD_H_
+#define BOARD_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* BOARD_H_ */

hw/bsp/raspberrypi4/family.c

@@ -0,0 +1,151 @@
+/* 
+ * 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 "bsp/board.h"
+#include "board.h"
+
+#include "io.h"
+
+//--------------------------------------------------------------------+
+// Forward USB interrupt events to TinyUSB IRQ Handler
+//--------------------------------------------------------------------+
+void OTG_FS_IRQHandler(void)
+{
+  tud_int_handler(0);
+}
+
+//--------------------------------------------------------------------+
+// MACRO TYPEDEF CONSTANT ENUM
+//--------------------------------------------------------------------+
+
+//--------------------------------------------------------------------+
+// Board porting API
+//--------------------------------------------------------------------+
+
+void print(void) {
+  const char* greeting2 = "hello from cm100\r\n";
+  board_uart_write(greeting2, strlen(greeting2));
+}
+
+void board_init(void)
+{
+  gpio_initOutputPinWithPullNone(18);
+  gpio_setPinOutputBool(18, true);
+  gpio_initOutputPinWithPullNone(42);
+  // gpio_initOutputPinWithPullNone(23);
+  // gpio_initOutputPinWithPullNone(24);
+  // gpio_initOutputPinWithPullNone(25);
+  gpio_setPinOutputBool(18, false);
+  uart_init();
+  gpio_setPinOutputBool(18, true);
+  const char* greeting = "hello to gdb2\r\n";
+  gpio_setPinOutputBool(18, false);
+  for (size_t i = 0; i < 5; i++) {
+  // while (true) {
+    for (size_t j = 0; j < 1000000; j++) {
+      __asm__("nop");
+    }
+    gpio_setPinOutputBool(42, true);
+    gpio_setPinOutputBool(18, true);
+    for (size_t j = 0; j < 1000000; j++) {
+      __asm__("nop");
+    }
+    gpio_setPinOutputBool(42, false);
+    gpio_setPinOutputBool(18, false);
+  }
+  // uart_writeText("hello from io\n");
+  // gpio_setPinOutputBool(24, true);
+  board_uart_write(greeting, strlen(greeting));
+  // gpio_setPinOutputBool(24, false);
+  // gpio_setPinOutputBool(25, true);
+  print();
+  // gpio_setPinOutputBool(25, false);
+  while (true) {
+  // for (size_t i = 0; i < 5; i++) {
+    for (size_t j = 0; j < 10000000000; j++) {
+      __asm__("nop");
+    }
+    gpio_setPinOutputBool(42, true);
+    for (size_t j = 0; j < 10000000000; j++) {
+      __asm__("nop");
+    }
+    gpio_setPinOutputBool(42, false);
+  }
+  // while (1) uart_update();
+}
+
+void board_led_write(bool state)
+{
+  gpio_setPinOutputBool(42, 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)
+{
+  for (int i = 0; i < len; i++) {
+    const char* cbuf = buf;
+    if (cbuf[i] == '\n') {
+      uart_writeByteBlockingActual('\r');
+    }
+    uart_writeByteBlockingActual(cbuf[i]);
+  }
+  return len;
+}
+
+#if CFG_TUSB_OS  == OPT_OS_NONE
+volatile uint32_t system_ticks = 0;
+void SysTick_Handler (void)
+{
+  system_ticks++;
+}
+
+uint32_t board_millis(void)
+{
+  return system_ticks;
+}
+#endif
+
+void HardFault_Handler (void)
+{
+  // asm("bkpt");
+}
+
+// Required by __libc_init_array in startup code if we are compiling using
+// -nostdlib/-nostartfiles.
+void _init(void)
+{
+
+}

hw/bsp/raspberrypi4/family.mk

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+UF2_FAMILY_ID = 0x57755a57
+
+include $(TOP)/$(BOARD_PATH)/board.mk
+
+MCU_DIR = hw/mcu/broadcom/bcm2711
+
+CC = clang
+
+CFLAGS += \
+	-Wall \
+	-O0 \
+	-ffreestanding \
+	-nostdlib \
+	-nostartfiles \
+	-std=c17 \
+	-mgeneral-regs-only \
+	-DCFG_TUSB_MCU=OPT_MCU_BCM2711
+
+SRC_C += \
+	src/portable/broadcom/synopsys/dcd_synopsys.c \
+	$(MCU_DIR)/io.c \
+	$(MCU_DIR)/interrupts.c
+
+CROSS_COMPILE = aarch64-none-elf-
+
+SKIP_NANOLIB = 1
+
+LD_FILE = $(MCU_DIR)/link.ld
+
+INC += \
+	$(TOP)/$(BOARD_PATH) \
+	$(TOP)/$(MCU_DIR)
+
+SRC_S += $(MCU_DIR)/boot.S
+
+$(BUILD)/kernel8.img: $(BUILD)/$(PROJECT).elf
+	$(OBJCOPY) -O binary $^ $@