blackfin: Move blackfin serial driver out of blackfin arch folder.

- Move blackfin serial driver to the generic driver folder.
- Move blackfin serial headers to blackfin arch head folder.
- Update the include path to blackfin serial header in start up code.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>

arch/blackfin/cpu/Makefile

@@ -23,7 +23,6 @@ COBJS-y  += interrupts.o
 COBJS-$(CONFIG_JTAG_CONSOLE) += jtag-console.o
 COBJS-y  += os_log.o
 COBJS-y  += reset.o
-COBJS-y  += serial.o
 COBJS-y  += traps.o
 
 SRCS     := $(SEXTRA:.o=.S) $(SOBJS:.o=.S) $(COBJS-y:.o=.c)

arch/blackfin/cpu/cpu.c

@@ -16,9 +16,9 @@
 #include <asm/mach-common/bits/core.h>
 #include <asm/mach-common/bits/ebiu.h>
 #include <asm/mach-common/bits/trace.h>
+#include <asm/serial.h>
 
 #include "cpu.h"
-#include "serial.h"
 #include "initcode.h"
 
 ulong bfin_poweron_retx;

arch/blackfin/cpu/initcode.c

@@ -16,10 +16,9 @@
 #include <asm/mach-common/bits/watchdog.h>
 #include <asm/mach-common/bits/bootrom.h>
 #include <asm/mach-common/bits/core.h>
+#include <asm/serial.h>
 
-#define BUG() while (1) { asm volatile("emuexcpt;"); }
-
-#include "serial.h"
+#define BUG() while (1) asm volatile("emuexcpt;");
 
 #ifndef __ADSPBF60x__
 #include <asm/mach-common/bits/ebiu.h>

arch/blackfin/cpu/start.S

@@ -35,8 +35,7 @@
 #include <asm/mach-common/bits/watchdog.h>
 #include <asm/mach-common/bits/core.h>
 #include <asm/mach-common/bits/pll.h>
-
-#include "serial.h"
+#include <asm/serial.h>
 
 /* It may seem odd that we make calls to functions even though we haven't
  * relocated ourselves yet out of {flash,ram,wherever}.  This is OK because

drivers/serial/Makefile

@@ -52,6 +52,7 @@ COBJS-$(CONFIG_XILINX_UARTLITE) += serial_xuartlite.o
 COBJS-$(CONFIG_SANDBOX_SERIAL) += sandbox.o
 COBJS-$(CONFIG_SCIF_CONSOLE) += serial_sh.o
 COBJS-$(CONFIG_ZYNQ_SERIAL) += serial_zynq.o
+COBJS-$(CONFIG_BFIN_SERIAL) += serial_bfin.o
 
 ifndef CONFIG_SPL_BUILD
 COBJS-$(CONFIG_USB_TTY) += usbtty.o

arch/blackfin/cpu/serial.c → drivers/serial/serial_bfin.c

@@ -43,13 +43,12 @@
 #include <serial.h>
 #include <linux/compiler.h>
 #include <asm/blackfin.h>
+#include <asm/serial.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
 #ifdef CONFIG_UART_CONSOLE
 
-#include "serial.h"
-
 #ifdef CONFIG_DEBUG_SERIAL
 static uart_lsr_t cached_lsr[256];
 static uart_lsr_t cached_rbr[256];

include/configs/bfin_adi_common.h

@@ -111,6 +111,9 @@
 #ifndef CONFIG_BAUDRATE
 # define CONFIG_BAUDRATE	57600
 #endif
+#ifdef CONFIG_UART_CONSOLE
+# define CONFIG_BFIN_SERIAL
+#endif
 
 /*
  * Debug Settings