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authorGuanXuetao <gxt@mprc.pku.edu.cn>2011-01-15 18:22:19 +0800
committerGuanXuetao <gxt@mprc.pku.edu.cn>2011-03-17 09:19:12 +0800
commit28bab059a23aac6bb129b307410e5b63e132a290 (patch)
tree574dc1cf3a7fd6c0744e8c2a5fdc7f49e94d4733 /arch/unicore32/include
parent6dea1ba1c82013c108d235ec32c6d8bd9ff6b48d (diff)
unicore32 additional architecture files: low-level lib: ocd debug
This patch implements low-level debug libraries with On-Chip-Debugger hardware support. Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Acked-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/unicore32/include')
-rw-r--r--arch/unicore32/include/mach/ocd.h36
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/unicore32/include/mach/ocd.h b/arch/unicore32/include/mach/ocd.h
new file mode 100644
index 000000000000..189fd71bfa34
--- /dev/null
+++ b/arch/unicore32/include/mach/ocd.h
@@ -0,0 +1,36 @@
+/*
+ * linux/arch/unicore32/include/mach/ocd.h
+ *
+ * Code specific to PKUnity SoC and UniCore ISA
+ *
+ * Copyright (C) 2001-2010 GUAN Xue-tao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __MACH_PUV3_OCD_H__
+#define __MACH_PUV3_OCD_H__
+
+#if defined(CONFIG_DEBUG_OCD)
+static inline void ocd_putc(unsigned int c)
+{
+ int status, i = 0x2000000;
+
+ do {
+ if (--i < 0)
+ return;
+
+ asm volatile ("movc %0, p1.c0, #0" : "=r" (status));
+ } while (status & 2);
+
+ asm("movc p1.c1, %0, #1" : : "r" (c));
+}
+
+#define putc(ch) ocd_putc(ch)
+#else
+#define putc(ch)
+#endif
+
+#endif