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authorMichal Simek <michal.simek@xilinx.com>2015-12-14 16:55:10 +0100
committerMichal Simek <michal.simek@xilinx.com>2016-01-27 15:55:49 +0100
commit4166ba3b2351aa72c372f66a54e9fb92cffbd230 (patch)
treeb02e85c0f7634744bad03a9a30b0acf52c1a3b2a /drivers/serial/serial_xuartlite.c
parent93768393d71871e4638d613acfdad6ef3cf62561 (diff)
serial: uartlite: Add support for debug console
Add support for debug console. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Thomas Chou <thomas@wytron.com.tw>
Diffstat (limited to 'drivers/serial/serial_xuartlite.c')
-rw-r--r--drivers/serial/serial_xuartlite.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/serial/serial_xuartlite.c b/drivers/serial/serial_xuartlite.c
index 157e14dedc..a2e9303925 100644
--- a/drivers/serial/serial_xuartlite.c
+++ b/drivers/serial/serial_xuartlite.c
@@ -114,3 +114,29 @@ U_BOOT_DRIVER(serial_uartlite) = {
.ops = &uartlite_serial_ops,
.flags = DM_FLAG_PRE_RELOC,
};
+
+#ifdef CONFIG_DEBUG_UART_UARTLITE
+
+#include <debug_uart.h>
+
+static inline void _debug_uart_init(void)
+{
+ struct uartlite *regs = (struct uartlite *)CONFIG_DEBUG_UART_BASE;
+
+ out_be32(&regs->control, 0);
+ out_be32(&regs->control, ULITE_CONTROL_RST_RX | ULITE_CONTROL_RST_TX);
+ in_be32(&regs->control);
+}
+
+static inline void _debug_uart_putc(int ch)
+{
+ struct uartlite *regs = (struct uartlite *)CONFIG_DEBUG_UART_BASE;
+
+ while (in_be32(&regs->status) & SR_TX_FIFO_FULL)
+ ;
+
+ out_be32(&regs->tx_fifo, ch & 0xff);
+}
+
+DEBUG_UART_FUNCS
+#endif