Add shared emulator services, waveform generation and STM32 USB boot ports

c/set-protocol/include/set_boot.h

@@ -0,0 +1,26 @@
+#ifndef SET_BOOT_H
+#define SET_BOOT_H
+#include "set_firmware.h"
+
+/* Transport-independent, single-slot updater. invalidate MUST become durable
+ * before erase; commit is called only after read-back verification. */
+typedef struct {
+    bool (*invalidate)(void *user);
+    bool (*erase)(void *user, uint32_t size);
+    bool (*write)(void *user, uint32_t offset, const uint8_t *data, uint16_t size);
+    bool (*verify)(void *user, uint32_t size, uint32_t crc);
+    bool (*commit)(void *user, uint32_t size, uint32_t crc);
+    void (*activate)(void *user);
+} setp_boot_ops;
+typedef struct {
+    setp_boot_ops ops;
+    void *user;
+    uint32_t base, capacity, crc;
+    uint16_t block_size;
+    setp_fw_status_t status;
+} setp_boot;
+void setp_boot_init(setp_boot *b, const setp_boot_ops *ops, void *user,
+                    uint32_t base, uint32_t capacity);
+/* Returns SET status; FW_STATUS body is encoded by the caller. */
+uint16_t setp_boot_command(setp_boot *b, uint16_t type, const uint8_t *p, uint16_t n);
+#endif