Add realtek target files

Signed-off-by: Roman Yeryomin <roman@advem.lv>

1 files changed, 51 insertions, 0 deletions

diff --git a/target/linux/realtek/files/arch/mips/rtl8196c/printf.c b/target/linux/realtek/files/arch/mips/rtl8196c/printf.c
new file mode 100644
index 000000000..650f46d27
--- /dev/null
+++ b/target/linux/realtek/files/arch/mips/rtl8196c/printf.c
@@ -0,0 +1,51 @@
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/spinlock.h>
+#include <asm/io.h>
+#include <asm/system.h>
+
+#include <prom.h>
+#include <platform.h>
+
+void  __init prom_console_init(void)
+{
+   /* 8 bits, 1 stop bit, no parity. */
+   REG8(UART0_LCR) = CHAR_LEN_8 | ONE_STOP | PARITY_DISABLE;
+
+   /* Reset/Enable the FIFO */
+   REG8(UART0_FCR) = FCR_EN | RXRST | TXRST | CHAR_TRIGGER_14;
+
+   /* Disable All Interrupts */
+   REG8(UART0_IER) = 0x00000000;
+
+   /* Enable Divisor Latch */
+   REG8(UART0_LCR) |= DLAB;
+
+   /* Set Divisor */
+   REG8(UART0_DLL) = (SYSCLK / (BAUDRATE * 16) - 1) & 0x00FF;
+   REG8(UART0_DLM) = ((SYSCLK / (BAUDRATE * 16) - 1) & 0xFF00) >> 8;
+
+   /* Disable Divisor Latch */
+   REG8(UART0_LCR) &= (~DLAB);
+}
+
+int prom_putchar(char c)
+{
+   unsigned int busy_cnt = 0;
+
+   do
+   {
+      /* Prevent Hanging */
+      if (busy_cnt++ >= 30000)
+      {
+         /* Reset Tx FIFO */
+         REG8(UART0_FCR) = TXRST | CHAR_TRIGGER_14;
+         return 0;
+      }
+   } while ((REG8(UART0_LSR) & LSR_THRE) == TxCHAR_AVAIL);
+
+   /* Send Character */
+   REG8(UART0_THR) = c;
+
+   return 1;
+}