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authorLinus Torvalds <torvalds@linux-foundation.org>2008-07-15 15:01:29 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-15 15:01:29 -0700
commit7e2225d860772aaa07e1cebca6a5aa6f93f9aa91 (patch)
tree8a4c3076c2043d011fcf2357835f4f16be7606a7 /arch/mips/txx9/jmr3927/kgdb_io.c
parent3a628b0fd42f7eaf9d052447784d48ceae9ffb8e (diff)
parentb27418aa551a153e8bf1bd16cf93e5786f9590a9 (diff)
Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (54 commits) [MIPS] Remove mips_machtype for LASAT machines [MIPS] Remove mips_machtype from EMMA2RH machines [MIPS] Remove mips_machtype from ARC based machines [MIPS] MTX-1 flash partition setup move to platform devices registration [MIPS] TXx9: cleanup and fix some sparse warnings [MIPS] TXx9: rename asm-mips/mach-jmr3927 to asm-mips/mach-tx39xx [MIPS] remove machtype for group Toshiba [MIPS] separate rbtx4927_time_init() and rbtx4937_time_init() [MIPS] separate rbtx4927_arch_init() and rbtx4937_arch_init() [MIPS] txx9_cpu_clock setup move to rbtx4927_time_init() [MIPS] txx9_board_vec set directly without mips_machtype [MIPS] IP22: Add platform device for Indy volume buttons [MIPS] cmbvr4133: Remove support [MIPS] remove wrppmc_machine_power_off() [MIPS] replace inline assembler to cpu_wait() [MIPS] IP22/28: Add platform devices for HAL2 [MIPS] TXx9: Update and merge defconfigs [MIPS] TXx9: Make single kernel can support multiple boards [MIPS] TXx9: Update defconfigs [MIPS] TXx9: Reorganize PCI code ...
Diffstat (limited to 'arch/mips/txx9/jmr3927/kgdb_io.c')
-rw-r--r--arch/mips/txx9/jmr3927/kgdb_io.c105
1 files changed, 105 insertions, 0 deletions
diff --git a/arch/mips/txx9/jmr3927/kgdb_io.c b/arch/mips/txx9/jmr3927/kgdb_io.c
new file mode 100644
index 00000000000..5bd757e56f7
--- /dev/null
+++ b/arch/mips/txx9/jmr3927/kgdb_io.c
@@ -0,0 +1,105 @@
+/*
+ * BRIEF MODULE DESCRIPTION
+ * Low level uart routines to directly access a TX[34]927 SIO.
+ *
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc.
+ * ahennessy@mvista.com or source@mvista.com
+ *
+ * Based on arch/mips/ddb5xxx/ddb5477/kgdb_io.c
+ *
+ * Copyright (C) 2000-2001 Toshiba Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <asm/txx9/jmr3927.h>
+
+#define TIMEOUT 0xffffff
+
+static int remoteDebugInitialized = 0;
+static void debugInit(int baud);
+
+int putDebugChar(unsigned char c)
+{
+ int i = 0;
+
+ if (!remoteDebugInitialized) {
+ remoteDebugInitialized = 1;
+ debugInit(38400);
+ }
+
+ do {
+ slow_down();
+ i++;
+ if (i>TIMEOUT) {
+ break;
+ }
+ } while (!(tx3927_sioptr(0)->cisr & TXx927_SICISR_TXALS));
+ tx3927_sioptr(0)->tfifo = c;
+
+ return 1;
+}
+
+unsigned char getDebugChar(void)
+{
+ int i = 0;
+ int dicr;
+ char c;
+
+ if (!remoteDebugInitialized) {
+ remoteDebugInitialized = 1;
+ debugInit(38400);
+ }
+
+ /* diable RX int. */
+ dicr = tx3927_sioptr(0)->dicr;
+ tx3927_sioptr(0)->dicr = 0;
+
+ do {
+ slow_down();
+ i++;
+ if (i>TIMEOUT) {
+ break;
+ }
+ } while (tx3927_sioptr(0)->disr & TXx927_SIDISR_UVALID)
+ ;
+ c = tx3927_sioptr(0)->rfifo;
+
+ /* clear RX int. status */
+ tx3927_sioptr(0)->disr &= ~TXx927_SIDISR_RDIS;
+ /* enable RX int. */
+ tx3927_sioptr(0)->dicr = dicr;
+
+ return c;
+}
+
+static void debugInit(int baud)
+{
+ tx3927_sioptr(0)->lcr = 0x020;
+ tx3927_sioptr(0)->dicr = 0;
+ tx3927_sioptr(0)->disr = 0x4100;
+ tx3927_sioptr(0)->cisr = 0x014;
+ tx3927_sioptr(0)->fcr = 0;
+ tx3927_sioptr(0)->flcr = 0x02;
+ tx3927_sioptr(0)->bgr = ((JMR3927_BASE_BAUD + baud / 2) / baud) |
+ TXx927_SIBGR_BCLK_T0;
+}