[U-Boot] [PATCH 5/5] serial: zynq: Add OF initialization support
Michal Simek
michal.simek at xilinx.com
Thu Feb 13 11:30:08 CET 2014
Add console selection from DTB which is enough to have
OF driven solution.
Signed-off-by: Michal Simek <michal.simek at xilinx.com>
---
drivers/serial/serial_zynq.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/drivers/serial/serial_zynq.c b/drivers/serial/serial_zynq.c
index ff28f3c..c57137f 100644
--- a/drivers/serial/serial_zynq.c
+++ b/drivers/serial/serial_zynq.c
@@ -6,11 +6,14 @@
*/
#include <common.h>
+#include <fdtdec.h>
#include <watchdog.h>
#include <asm/io.h>
#include <linux/compiler.h>
#include <serial.h>
+DECLARE_GLOBAL_DATA_PTR;
+
#define ZYNQ_UART_SR_TXFULL 0x00000010 /* TX FIFO full */
#define ZYNQ_UART_SR_RXEMPTY 0x00000002 /* RX FIFO empty */
@@ -184,6 +187,30 @@ DECLARE_PSSERIAL_FUNCTIONS(1);
struct serial_device uart_zynq_serial1_device =
INIT_PSSERIAL_STRUCTURE(1, "ttyPS1");
+#ifdef CONFIG_OF_CONTROL
+__weak struct serial_device *default_serial_console(void)
+{
+ const void *blob = gd->fdt_blob;
+ int node;
+ unsigned int base_addr;
+
+ node = fdt_path_offset(blob, "serial0");
+ if (node < 0)
+ return NULL;
+
+ base_addr = fdtdec_get_addr(blob, node, "reg");
+ if (base_addr == FDT_ADDR_T_NONE)
+ return NULL;
+
+ if (base_addr == ZYNQ_SERIAL_BASEADDR0)
+ return &uart_zynq_serial0_device;
+
+ if (base_addr == ZYNQ_SERIAL_BASEADDR1)
+ return &uart_zynq_serial1_device;
+
+ return NULL;
+}
+#else
__weak struct serial_device *default_serial_console(void)
{
if (uart_zynq_ports[0])
@@ -193,6 +220,7 @@ __weak struct serial_device *default_serial_console(void)
return NULL;
}
+#endif
void zynq_serial_initalize(void)
{
--
1.8.2.3
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