New rewritten serial driver + dev interface

kernel/dev/serialdev.c

@@ -0,0 +1,42 @@
+#include <stdint.h>
+#include <stddef.h>
+#include "dev.h"
+#include "serialdev.h"
+#include "errors.h"
+#include "util/util.h"
+#include "hshtb.h"
+#include "sysdefs/devctl.h"
+#include "drivers/serial/serial.h"
+#include "kprintf.h"
+
+int32_t serialdev_sendb(uint8_t *buffer, size_t len, void *extra) {
+  (void)len; (void)extra;
+  serial_sendb(buffer[0]);
+  return E_OK;
+}
+
+int32_t serialdev_sendready(uint8_t *buffer, size_t len, void *extra) {
+  (void)buffer; (void)len; (void) extra;
+  return serial_sendready();
+}
+
+int32_t serialdev_recvb(uint8_t *buffer, size_t len, void *extra) {
+  (void)buffer; (void)len; (void)extra;
+  return serial_recvb();
+}
+
+int32_t serialdev_recvready(uint8_t *buffer, size_t len, void *extra) {
+  (void)buffer; (void)len; (void)extra;
+  return serial_recvready();
+}
+
+void serialdev_init(void) {
+  Dev *serialdev = NULL;
+  HSHTB_ALLOC(DEVTABLE.devs, ident, "serialdev", serialdev);
+  serialdev->fns[DEV_SERIALDEV_SENDB] = &serialdev_sendb;
+  serialdev->fns[DEV_SERIALDEV_SENDREADY] = &serialdev_sendready;
+  serialdev->fns[DEV_SERIALDEV_RECVB] = &serialdev_recvb;
+  serialdev->fns[DEV_SERIALDEV_RECVREADY] = &serialdev_recvready;
+  spinlock_init(&serialdev->spinlock);
+  serial_init();
+}