From f84c78a2e1994ef8efcdd8768dc2a6b0ee363189 Mon Sep 17 00:00:00 2001
From: zwelch <zwelch@b42882b7-edfa-0310-969c-e2dbd0fdcd60>
Date: Mon, 8 Jun 2009 00:42:15 +0000
Subject: Finish off the dummy minidriver integration: - Try to disambiguates
 minidriver options from "standard" driver options.   - Make minidummy symbols
 more explict about being a minidriver.   - Move minidummy.c into minidummy
 directory to put it with its header.

In configure.in:
- Improve configuration option to allow new minidriver implementations:
  - Change option from --enable-minidummy to --enable-minidriver-dummy.
  - Move it to the end of the list of options.
  - Provides a clear pattern for future minidrivers.
- Update handling of HAVE_JTAG_MINIDRIVER_H:
  - Check for external jtag_minidriver.h only with --enable-ecosboard.
  - Otherwise, define it when --enable-minidriver-dummy is provided.
- Add check to ensure only one minidriver is enabled.
- When a minidriver is enabled, warn user that standard drivers are not built.
- Use proper AC_DEFINE semantics with MINIDRIVER_DUMMY.

In src/jtag/Makefile.am:
- Restructure handling of minidummy source files.
- Include minidummy driver header in the distribution.

In src/jtag/jtag.c:
- Restructure preprocessor logic to include:
  - only one minidriver, or
  - all configured standard drivers.


git-svn-id: svn://svn.berlios.de/openocd/trunk@2102 b42882b7-edfa-0310-969c-e2dbd0fdcd60
---
 src/jtag/jtag.c | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

(limited to 'src/jtag/jtag.c')

diff --git a/src/jtag/jtag.c b/src/jtag/jtag.c
index 68214455..8bc19112 100644
--- a/src/jtag/jtag.c
+++ b/src/jtag/jtag.c
@@ -97,11 +97,9 @@ static bool hasKHz = false;
 
 #if BUILD_ECOSBOARD == 1
 	extern jtag_interface_t zy1000_interface;
-#endif
-
-#if BUILD_MINIDUMMY == 1
+#elif defined(BUILD_MINIDRIVER_DUMMY)
 	extern jtag_interface_t minidummy_interface;
-#endif
+#else // standard drivers
 #if BUILD_PARPORT == 1
 	extern jtag_interface_t parport_interface;
 #endif
@@ -157,14 +155,21 @@ static bool hasKHz = false;
 #if BUILD_ARMJTAGEW == 1
 	extern jtag_interface_t armjtagew_interface;
 #endif
+#endif // standard drivers
 
+/**
+ * The list of built-in JTAG interfaces, containing entries for those
+ * drivers that were enabled by the @c configure script.
+ *
+ * The list should be defined to contain either one minidriver interface
+ * or some number of standard driver interfaces, never both.
+ */
 jtag_interface_t *jtag_interfaces[] = {
 #if BUILD_ECOSBOARD == 1
 	&zy1000_interface,
-#endif
-#if BUILD_MINIDUMMY == 1
+#elif defined(BUILD_MINIDRIVER_DUMMY)
 	&minidummy_interface,
-#endif
+#else // standard drivers
 #if BUILD_PARPORT == 1
 	&parport_interface,
 #endif
@@ -207,6 +212,7 @@ jtag_interface_t *jtag_interfaces[] = {
 #if BUILD_ARMJTAGEW == 1
 	&armjtagew_interface,
 #endif
+#endif // standard drivers
 	NULL,
 };
 
-- 
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