patch-2.4.19 linux-2.4.19/arch/mips/galileo-boards/ev96100/puts.c
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- Lines: 145
- Date:
Fri Aug 2 17:39:43 2002
- Orig file:
linux-2.4.18/arch/mips/galileo-boards/ev96100/puts.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -urN linux-2.4.18/arch/mips/galileo-boards/ev96100/puts.c linux-2.4.19/arch/mips/galileo-boards/ev96100/puts.c
@@ -0,0 +1,144 @@
+
+/*
+ * Debug routines which directly access the uart.
+ */
+
+#include <linux/types.h>
+#include <asm/galileo-boards/ev96100.h>
+
+
+//#define SERIAL_BASE EV96100_UART0_REGS_BASE
+#define SERIAL_BASE 0xBD000020
+#define NS16550_BASE SERIAL_BASE
+
+#define SERA_CMD 0x0D
+#define SERA_DATA 0x08
+//#define SERB_CMD 0x05
+#define SERB_CMD 20
+#define SERB_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[SERB_CMD];
+ slow_down();
+ i++;
+ if (i>TIMEOUT) {
+ break;
+ }
+ } while (0 == (ch & TX_BUSY));
+ com1[SERB_DATA] = c;
+}
+
+void
+putchar(const unsigned char c)
+{
+ unsigned char ch;
+ int i = 0;
+
+ do {
+ ch = com1[SERB_CMD];
+ slow_down();
+ i++;
+ if (i>TIMEOUT) {
+ break;
+ }
+ } while (0 == (ch & TX_BUSY));
+ com1[SERB_DATA] = c;
+}
+
+void
+puts(unsigned char *cp)
+{
+ unsigned char ch;
+ int i = 0;
+
+ while (*cp) {
+ do {
+ ch = com1[SERB_CMD];
+ slow_down();
+ i++;
+ if (i>TIMEOUT) {
+ break;
+ }
+ } while (0 == (ch & TX_BUSY));
+ com1[SERB_DATA] = *cp++;
+ }
+ putch('\r');
+ putch('\n');
+}
+
+void
+fputs(unsigned char *cp)
+{
+ unsigned char ch;
+ int i = 0;
+
+ while (*cp) {
+
+ do {
+ ch = com1[SERB_CMD];
+ slow_down();
+ i++;
+ if (i>TIMEOUT) {
+ break;
+ }
+ } while (0 == (ch & TX_BUSY));
+ com1[SERB_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);
+}
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