console: Move newline translation outside console_tx_byte

This gives us completely transparent low-level function to transmit
data.

Change-Id: I706791ff43d80a36a7252a4da0e6f3af92520db7
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5336
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>

src/arch/armv7/early_console.c

@@ -24,9 +24,6 @@
 /* FIXME: need to make console driver more generic */
 void console_tx_byte(unsigned char byte)
 {
-	if (byte == '\n')
-		console_tx_byte('\r');
-
 #if CONFIG_CONSOLE_SERIAL
 	uart_tx_byte(byte);
 #endif

src/arch/x86/lib/romstage_console.c

@@ -26,9 +26,6 @@
 
 void console_tx_byte(unsigned char byte)
 {
-	if (byte == '\n')
-		console_tx_byte('\r');
-
 #if CONFIG_CONSOLE_SERIAL
 	uart_tx_byte(byte);
 #endif

src/console/console.c

@@ -48,7 +48,7 @@ void console_tx_flush(void)
 	}
 }
 
-static void __console_tx_byte(unsigned char byte)
+void console_tx_byte(unsigned char byte)
 {
 	struct console_driver *driver;
 	for(driver = console_drivers; driver < econsole_drivers; driver++) {
@@ -56,13 +56,6 @@ static void __console_tx_byte(unsigned char byte)
 	}
 }
 
-void console_tx_byte(unsigned char byte)
-{
-	if (byte == '\n')
-		__console_tx_byte('\r');
-	__console_tx_byte(byte);
-}
-
 unsigned char console_rx_byte(void)
 {
 	struct console_driver *driver;

src/console/printk.c

@@ -13,6 +13,13 @@
 
 DECLARE_SPIN_LOCK(console_lock)
 
+void do_putchar(unsigned char byte)
+{
+	if (byte == '\n')
+		console_tx_byte('\r');
+	console_tx_byte(byte);
+}
+
 int do_printk(int msg_level, const char *fmt, ...)
 {
 	va_list args;
@@ -30,7 +37,7 @@ int do_printk(int msg_level, const char *fmt, ...)
 	spin_lock(&console_lock);
 
 	va_start(args, fmt);
-	i = vtxprintf(console_tx_byte, fmt, args);
+	i = vtxprintf(do_putchar, fmt, args);
 	va_end(args);
 
 	console_tx_flush();
@@ -44,7 +51,8 @@ int do_printk(int msg_level, const char *fmt, ...)
 #if CONFIG_CHROMEOS
 void do_vtxprintf(const char *fmt, va_list args)
 {
-	vtxprintf(console_tx_byte, fmt, args);
+	vtxprintf(do_putchar, fmt, args);
 	console_tx_flush();
 }
 #endif
+

src/cpu/x86/smm/smiutil.c

@@ -29,9 +29,6 @@ void console_tx_flush(void)
 
 void console_tx_byte(unsigned char byte)
 {
-	if (byte == '\n')
-		console_tx_byte('\r');
-
 #if CONFIG_CONSOLE_SERIAL
 	uart_tx_byte(byte);
 #endif

src/include/console/console.h

@@ -62,25 +62,26 @@ void post_log_clear(void);
 /* this function is weak and can be overridden by a mainboard function. */
 void mainboard_post(u8 value);
 void __attribute__ ((noreturn)) die(const char *msg);
-int do_printk(int msg_level, const char *fmt, ...) __attribute__((format(printf, 2, 3)));
 
 #if defined(__BOOT_BLOCK__) && !CONFIG_BOOTBLOCK_CONSOLE || \
     defined(__SMM__) && !CONFIG_DEBUG_SMI || \
     (defined(__PRE_RAM__) && !defined(__BOOT_BLOCK__)) && !CONFIG_EARLY_CONSOLE
 
-static inline void printk(int LEVEL, const char *fmt, ...);
+/* Do nothing. */
-static inline void printk(int LEVEL, const char *fmt, ...) {
+static inline void printk(int LEVEL, const char *fmt, ...) {}
-	/* Do nothing. */
+static inline void do_putchar(unsigned char byte) {}
-}
 
-#else /* defined(__PRE_RAM__) && !CONFIG_EARLY_CONSOLE */
+#else
+
+int do_printk(int msg_level, const char *fmt, ...) __attribute__((format(printf, 2, 3)));
+void do_putchar(unsigned char byte);
 
 #define printk(LEVEL, fmt, args...)				\
 	do {							\
 		do_printk(LEVEL, fmt, ##args);		\
 	} while(0)
 
-#endif /* defined(__PRE_RAM__) && !CONFIG_EARLY_CONSOLE */
+#endif
 
 #if CONFIG_CHROMEOS
 /* FIXME: Collision of varargs with AMD headers without guard. */

src/northbridge/intel/haswell/raminit.c

@@ -166,7 +166,7 @@ void sdram_initialize(struct pei_data *pei_data)
 	}
 
 	/* Pass console handler in pei_data */
-	pei_data->tx_byte = console_tx_byte;
+	pei_data->tx_byte = do_putchar;
 
 	/* Locate and call UEFI System Agent binary. */
 	entry = (unsigned long)cbfs_get_file_content(

src/northbridge/intel/sandybridge/raminit.c

@@ -248,7 +248,7 @@ void sdram_initialize(struct pei_data *pei_data)
 	}
 
 	/* Pass console handler in pei_data */
-	pei_data->tx_byte = console_tx_byte;
+	pei_data->tx_byte = do_putchar;
 
 	/* Locate and call UEFI System Agent binary. */
 	/* TODO make MRC blob (0xab?) defined in cbfs_core.h. */

src/soc/intel/baytrail/romstage/raminit.c

@@ -55,7 +55,7 @@ static void enable_smbus(void)
 
 static void ABI_X86 send_to_console(unsigned char b)
 {
-	console_tx_byte(b);
+	do_putchar(b);
 }
 
 static void print_dram_info(void)