1 files changed, 114 insertions, 0 deletions
diff --git a/example-fs-bb48/reset.c b/example-fs-bb48/reset.c
new file mode 100644
index 0000000..9af6f96
--- /dev/null
+++ b/example-fs-bb48/reset.c
@@ -0,0 +1,114 @@
+/*
+ * sys.c - No system routines, but only RESET handler for MKL27Z256.
+ *
+ * Copyright (C) 2016 Flying Stone Technology
+ * Author: NIIBE Yutaka <gniibe@fsij.org>
+ *
+ * Copying and distribution of this file, with or without modification,
+ * are permitted in any medium without royalty provided the copyright
+ * notice and this notice are preserved.  This file is offered as-is,
+ * without any warranty.
+ *
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+
+static void __attribute__ ((naked))
+reset (void)
+{
+  asm volatile ("cpsid	i\n\t"		/* Mask all interrupts. */
+		"mov	r0, pc\n\t"	/* r0 = PC & ~0x0fff */
+		"mov	r1, #0x10\n\t"
+		"lsl	r1, #8\n\t"
+		"sub	r1, r1, #1\n\t"
+		"bic	r0, r0, r1\n\t"
+		"ldr	r2, [r0]\n\t"
+		"msr	MSP, r2\n\t"	/* Main (exception handler) stack. */
+		"b	entry\n\t"
+		: /* no output */ : /* no input */ : "memory");
+  /* Never reach here. */
+}
+
+extern uint8_t __main_stack_end__;
+extern void preempt (void);
+extern void chx_timer_expired (void);
+extern void chx_handle_intr (void);
+
+static void nmi (void)
+{
+  for (;;);
+}
+
+static void __attribute__ ((naked))
+hard_fault (void)
+{
+  for (;;);
+}
+
+static void mem_manage (void)
+{
+  for (;;);
+}
+
+static void bus_fault (void)
+{
+  for (;;);
+}
+
+static void usage_fault (void)
+{
+  for (;;);
+}
+
+static void none (void)
+{
+}
+
+
+typedef void (*handler)(void);
+extern uint8_t __main_stack_end__;
+
+handler vector[] __attribute__ ((section(".vectors"))) = {
+  (handler)(&__main_stack_end__ - 32),
+  reset,
+  nmi,		/* nmi */
+  hard_fault,		/* hard fault */
+  /* 0x10 */
+  mem_manage,		/* mem manage */
+  bus_fault,		/* bus fault */
+  usage_fault,		/* usage fault */
+  none,
+  /* 0x20 */
+  none, none, none,		/* reserved */
+  none,				/* SVCall */
+  none,				/* Debug */
+  none,				/* reserved */
+  preempt,			/* PendSV */
+  chx_timer_expired,		/* SysTick */
+  /* 0x40 */
+  chx_handle_intr,  chx_handle_intr,  chx_handle_intr,  chx_handle_intr,
+  chx_handle_intr,  chx_handle_intr,  chx_handle_intr,  chx_handle_intr,
+  /* 0x60 */
+  chx_handle_intr,  chx_handle_intr,  chx_handle_intr,  chx_handle_intr,
+  chx_handle_intr,  chx_handle_intr,  chx_handle_intr,  chx_handle_intr,
+  /* 0x80 */
+  chx_handle_intr,  chx_handle_intr,  chx_handle_intr,  chx_handle_intr,
+  chx_handle_intr,  chx_handle_intr,  chx_handle_intr,  chx_handle_intr,
+  /* 0xA0 */
+  chx_handle_intr,  chx_handle_intr,  chx_handle_intr,  chx_handle_intr,
+  chx_handle_intr,  chx_handle_intr,  chx_handle_intr,  chx_handle_intr,
+  /* 0xc0 */
+};
+
+uint32_t flash_config[] __attribute__ ((section(".flash_config"))) = {
+  0xffffffff, 0xffffffff, /* Backdoor comparison key. */
+  0xffffffff, /* Protection bytes */
+  0xffff3ffe, /* FSEC=0xfe, FOPT=0x3f */
+  /* FOPT=0x3f:
+   * BOOTSRC_SEL=00: Boot from flash
+   */
+  /* FSEC=0xfe:
+   * unsecure
+   */
+};