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-rw-r--r--arch/mips/ite-boards/generic/puts.c139
1 files changed, 139 insertions, 0 deletions
diff --git a/arch/mips/ite-boards/generic/puts.c b/arch/mips/ite-boards/generic/puts.c
new file mode 100644
index 000000000000..20b02df6b414
--- /dev/null
+++ b/arch/mips/ite-boards/generic/puts.c
@@ -0,0 +1,139 @@
+/*
+ *
+ * BRIEF MODULE DESCRIPTION
+ * Low level uart routines to directly access a 16550 uart.
+ *
+ * Copyright 2000,2001 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc.
+ * ppopov@mvista.com or source@mvista.com
+ *
+ * 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 <linux/types.h>
+
+#define SERIAL_BASE 0xB4011800 /* it8172 */
+#define SER_CMD 5
+#define SER_DATA 0x00
+#define TX_BUSY 0x20
+
+#define TIMEOUT 0xffff
+#undef SLOW_DOWN
+
+static const char digits[16] = "0123456789abcdef";
+static volatile unsigned char *const com1 = (unsigned char *) SERIAL_BASE;
+
+
+#ifdef SLOW_DOWN
+static inline void slow_down()
+{
+ int k;
+ for (k = 0; k < 10000; k++);
+}
+#else
+#define slow_down()
+#endif
+
+void putch(const unsigned char c)
+{
+ unsigned char ch;
+ int i = 0;
+
+ do {
+ ch = com1[SER_CMD];
+ slow_down();
+ i++;
+ if (i > TIMEOUT) {
+ break;
+ }
+ } while (0 == (ch & TX_BUSY));
+ com1[SER_DATA] = c;
+}
+
+void puts(unsigned char *cp)
+{
+ unsigned char ch;
+ int i = 0;
+
+ while (*cp) {
+ do {
+ ch = com1[SER_CMD];
+ slow_down();
+ i++;
+ if (i > TIMEOUT) {
+ break;
+ }
+ } while (0 == (ch & TX_BUSY));
+ com1[SER_DATA] = *cp++;
+ }
+ putch('\r');
+ putch('\n');
+}
+
+void fputs(unsigned char *cp)
+{
+ unsigned char ch;
+ int i = 0;
+
+ while (*cp) {
+
+ do {
+ ch = com1[SER_CMD];
+ slow_down();
+ i++;
+ if (i > TIMEOUT) {
+ break;
+ }
+ } while (0 == (ch & TX_BUSY));
+ com1[SER_DATA] = *cp++;
+ }
+}
+
+
+void put64(uint64_t ul)
+{
+ int cnt;
+ unsigned ch;
+
+ cnt = 16; /* 16 nibbles in a 64 bit long */
+ putch('0');
+ putch('x');
+ do {
+ cnt--;
+ ch = (unsigned char) (ul >> cnt * 4) & 0x0F;
+ putch(digits[ch]);
+ } while (cnt > 0);
+}
+
+void put32(unsigned u)
+{
+ int cnt;
+ unsigned ch;
+
+ cnt = 8; /* 8 nibbles in a 32 bit long */
+ putch('0');
+ putch('x');
+ do {
+ cnt--;
+ ch = (unsigned char) (u >> cnt * 4) & 0x0F;
+ putch(digits[ch]);
+ } while (cnt > 0);
+}