cpu/samd21: add support for SAMD10

cpu/samd21/Kconfig

@@ -37,4 +37,6 @@ config CPU
 source "$(RIOTCPU)/samd21/Kconfig.samd21"
 source "$(RIOTCPU)/samd21/Kconfig.samr21"
 
+source "$(RIOTCPU)/samd21/vectors/Kconfig"
+
 source "$(RIOTCPU)/sam0_common/Kconfig"

cpu/samd21/Makefile

@@ -2,9 +2,6 @@
 MODULE = cpu
 
 # add a list of subdirectories, that should also be build
-DIRS = periph $(RIOTCPU)/cortexm_common $(RIOTCPU)/sam0_common
+DIRS = periph $(RIOTCPU)/cortexm_common $(RIOTCPU)/sam0_common vectors
-
-# (file triggers compiler bug. see #5775)
-SRC_NOLTO += vectors.c
 
 include $(RIOTBASE)/Makefile.base

cpu/samd21/Makefile.dep

@@ -1 +1,3 @@
+USEMODULE += samd21_vectors
+
 include $(RIOTCPU)/sam0_common/Makefile.dep

cpu/samd21/Makefile.include

@@ -1,3 +1,6 @@
+ifneq (,$(filter samd10%,$(CPU_MODEL)))
+  CFLAGS += -DCPU_SAMD10
+endif
 ifneq (,$(filter samd21%a,$(CPU_MODEL)))
   CFLAGS += -DCPU_SAMD21A
 endif

cpu/samd21/vectors/Kconfig

@@ -0,0 +1,12 @@
+# Copyright (c) 2020 ML!PA Consulting GmbH
+#
+# This file is subject to the terms and conditions of the GNU Lesser
+# General Public License v2.1. See the file LICENSE in the top level
+# directory for more details.
+
+config MODULE_SAMD21_VECTORS
+    bool
+    default y
+    depends on CPU_COMMON_SAMD21
+    help
+        SAM D1x/D2x interrupt vector table.

cpu/samd21/vectors/Makefile

@@ -0,0 +1,15 @@
+MODULE = samd21_vectors
+
+NO_AUTO_SRC = 1
+
+ifneq (,$(filter samd1%,$(CPU_MODEL)))
+  SRC_FILE = vectors_samd1x.c
+else
+  SRC_FILE = vectors_samd2x.c
+endif
+
+SRCS += $(SRC_FILE)
+# (file triggers compiler bug. see #5775)
+SRC_NOLTO += $(SRC_FILE)
+
+include $(RIOTBASE)/Makefile.base

cpu/samd21/vectors/vectors_samd1x.c

@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2020 ML!PA Consulting GmbH
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     cpu_samd21
+ * @{
+ *
+ * @file
+ * @brief       Startup code and interrupt vector definition
+ *
+ * @author      Benjamin Valentin <benjamin.valentin@ml-pa.com>
+ *
+ * @}
+ */
+
+#include <stdint.h>
+#include "vectors_cortexm.h"
+#include "cpu.h"
+
+/* define a local dummy handler as it needs to be in the same compilation unit
+ * as the alias definition */
+void dummy_handler(void) {
+    dummy_handler_default();
+}
+
+/* SAMR21 specific interrupt vector */
+WEAK_DEFAULT void isr_pm(void);
+WEAK_DEFAULT void isr_sysctrl(void);
+WEAK_DEFAULT void isr_wdt(void);
+WEAK_DEFAULT void isr_rtc(void);
+WEAK_DEFAULT void isr_eic(void);
+WEAK_DEFAULT void isr_nvmctrl(void);
+WEAK_DEFAULT void isr_dmac(void);
+WEAK_DEFAULT void isr_usb(void);
+WEAK_DEFAULT void isr_evsys(void);
+WEAK_DEFAULT void isr_sercom0(void);
+WEAK_DEFAULT void isr_sercom1(void);
+WEAK_DEFAULT void isr_sercom2(void);
+WEAK_DEFAULT void isr_tcc0(void);
+WEAK_DEFAULT void isr_tc1(void);
+WEAK_DEFAULT void isr_tc2(void);
+WEAK_DEFAULT void isr_adc(void);
+WEAK_DEFAULT void isr_ac(void);
+WEAK_DEFAULT void isr_dac(void);
+WEAK_DEFAULT void isr_ptc(void);
+
+/* CPU specific interrupt vector table */
+ISR_VECTOR(1) const isr_t vector_cpu[CPU_IRQ_NUMOF] = {
+    isr_pm,                 /*  0 Power Manager */
+    isr_sysctrl,            /*  1 System Control */
+    isr_wdt,                /*  2 Watchdog Timer */
+    isr_rtc,                /*  3 Real-Time Counter */
+    isr_eic,                /*  4 External Interrupt Controller */
+    isr_nvmctrl,            /*  5 Non-Volatile Memory Controller */
+    isr_dmac,               /*  6 Direct Memory Access Controller */
+    isr_usb,                /*  7 Universal Serial Bus */
+    isr_evsys,              /*  8 Event System Interface */
+    isr_sercom0,            /*  9 Serial Communication Interface 0 */
+    isr_sercom1,            /* 10 Serial Communication Interface 1 */
+    isr_sercom2,            /* 11 Serial Communication Interface 2 */
+    isr_tcc0,               /* 12 Timer Counter Control 0 */
+    isr_tc1,                /* 13 Basic Timer Control 1 */
+    isr_tc2,                /* 14 Basic Timer Control 2 */
+    isr_adc,                /* 15 Analog Digital Converter */
+    isr_ac,                 /* 16 Analog Comparators */
+    isr_dac,                /* 17 Digital Analog Converter */
+    isr_ptc,                /* 18 Peripheral Touch Controller */
+};