console: Revise serial console configuration names.

The console drivers (especially serial drivers) in Kconfig were named in
different styles. This change will rename configuration names to a better naming
style.

 - EARLY_CONSOLE:
        Enable output in pre-ram stage. (Renamed from EARLY_SERIAL_CONSOLE
        because it also supports non-serial)

 - CONSOLE_SERIAL:
        Enable serial output console, from one of the serial drivers. (Renamed
        from SERIAL_CONSOLE because other non-serial drivers are named as
        CONSOLE_XXX like CONSOLE_CBMEM)

 - CONSOLE_SERIAL_UART:
	Device-specific UART driver. (Renamed from
	CONSOLE_SERIAL_NONSTANDARD_MEM because it may be not memory-mapped)

 - HAVE_UART_SPECIAL:
        A dependency for CONSOLE_SERIAL_UART.

Verified to boot on x86/qemu and armv7/snow, and still seeing console
messages in romstage for both platforms.

Change-Id: I4bea3c8fea05bbb7d78df6bc22f82414ac66f973
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: http://review.coreboot.org/2299
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>

src/Kconfig

@@ -277,6 +277,10 @@ config HAVE_UART_MEMORY_MAPPED
 	bool
 	default n
 
+config HAVE_UART_SPECIAL
+	bool
+	default n
+
 config HAVE_ACPI_RESUME
 	bool
 	default n

src/arch/armv7/lib/romstage_console.c

@@ -20,7 +20,7 @@
 #include <console/console.h>
 #include <console/vtxprintf.h>
 // TODO Unify with x86 (CONFIG_CONSOLE_SERIAL8250)
-#if CONFIG_SERIAL_CONSOLE
+#if CONFIG_CONSOLE_SERIAL
 #include <uart.h>
 #endif
 #if CONFIG_USBDEBUG
@@ -33,7 +33,7 @@ void console_tx_byte(unsigned char byte)
 	if (byte == '\n')
 		console_tx_byte('\r');
 
-#if CONFIG_SERIAL_CONSOLE
+#if CONFIG_CONSOLE_SERIAL_UART
 	uart_tx_byte(byte);
 #endif
 #if CONFIG_USBDEBUG
@@ -46,7 +46,7 @@ void console_tx_byte(unsigned char byte)
 
 static void _console_tx_flush(void)
 {
-#if CONFIG_SERIAL_CONSOLE
+#if CONFIG_CONSOLE_SERIAL_UART
 	uart_tx_flush();
 #endif
 #if CONFIG_USBDEBUG

src/console/Kconfig

@@ -1,20 +1,21 @@
 menu "Console"
-config SERIAL_CONSOLE
+
+config EARLY_CONSOLE
+	bool "Enable early (pre-RAM) console output."
+	default n
+	help
+	  Use console during early (pre-RAM) boot stages
+
+config CONSOLE_SERIAL
 	bool "Serial port console output"
 	default y
 	help
-	  Send coreboot debug output to a serial port
-
-config EARLY_SERIAL_CONSOLE
-	bool
-	depends on SERIAL_CONSOLE
-	default n
-	help
-	  Use serial console during early (pre-RAM) boot stages
+	  Send coreboot debug output to a serial port (should be one or more of
+	  CONSOLE_SERIAL8250, CONSOLE_SERIAL8250MEM, CONSOLE_SERIAL_UART)
 
 config CONSOLE_SERIAL8250
 	bool "Serial port console output (I/O mapped, 8250-compatible)"
-	depends on SERIAL_CONSOLE
+	depends on CONSOLE_SERIAL
 	depends on HAVE_UART_IO_MAPPED
 	default y
 	help
@@ -22,21 +23,21 @@ config CONSOLE_SERIAL8250
 
 config CONSOLE_SERIAL8250MEM
 	bool "Serial port console output (memory mapped, 8250-compatible)"
-	depends on SERIAL_CONSOLE
+	depends on CONSOLE_SERIAL
 	depends on HAVE_UART_MEMORY_MAPPED
 	help
 	  Send coreboot debug output to a memory mapped serial port console.
 
-config CONSOLE_SERIAL_NONSTANDARD_MEM
-	bool "Serial port console output (memory-mapped, device-specific)"
-	depends on SERIAL_CONSOLE
-	depends on HAVE_UART_MEMORY_MAPPED
+config CONSOLE_SERIAL_UART
+	bool "Serial port console output (device-specific UART)"
+	depends on CONSOLE_SERIAL
+	depends on HAVE_UART_SPECIAL
+	default y
 	help
-	  Send coreboot debug output to a memory mapped serial port console
-	  on a device-specific UART.
+	  Send coreboot debug output to a device-specific serial port console.
 
 choice
-	prompt "Serial port"
+	prompt "Serial port for 8250"
 	default CONSOLE_SERIAL_COM1
 	depends on CONSOLE_SERIAL8250
 
@@ -72,7 +73,7 @@ config TTYS0_BASE
 choice
 	prompt "Baud rate"
 	default CONSOLE_SERIAL_115200
-	depends on SERIAL_CONSOLE
+	depends on CONSOLE_SERIAL
 
 config CONSOLE_SERIAL_115200
 	bool "115200"

src/console/Makefile.inc

@@ -10,13 +10,13 @@ smm-y += vtxprintf.c
 smm-$(CONFIG_SMM_TSEG) += die.c
 
 romstage-y += vtxprintf.c
-romstage-$(CONFIG_EARLY_SERIAL_CONSOLE) += console.c
+romstage-$(CONFIG_EARLY_CONSOLE) += console.c
 romstage-y += post.c
 romstage-y += die.c
 
 # TODO Add vtxprintf.c only when early console is required.
 bootblock-y += vtxprintf.c
-bootblock-$(CONFIG_EARLY_SERIAL_CONSOLE) += console.c
+bootblock-$(CONFIG_EARLY_CONSOLE) += console.c
 bootblock-y += die.c
 
 ramstage-$(CONFIG_CONSOLE_SERIAL8250) += uart8250_console.c

src/console/console.c

@@ -107,7 +107,7 @@ void console_init(void)
 	enable_usbdebug(CONFIG_USBDEBUG_DEFAULT_PORT);
 	early_usbdebug_init();
 #endif
-#if CONFIG_CONSOLE_SERIAL8250 || CONFIG_CONSOLE_SERIAL8250MEM
+#if CONFIG_CONSOLE_SERIAL
 	uart_init();
 #endif
 #if CONFIG_DRIVERS_OXFORD_OXPCIE && CONFIG_CONSOLE_SERIAL8250MEM

src/cpu/Kconfig

@@ -16,7 +16,7 @@ source src/cpu/x86/Kconfig
 
 config CACHE_AS_RAM
 	bool
-	select EARLY_SERIAL_CONSOLE
+	select EARLY_CONSOLE
 	default !ROMCC
 
 config DCACHE_RAM_BASE

src/cpu/samsung/Kconfig

@@ -5,7 +5,10 @@ config CPU_SAMSUNG_EXYNOS
 config CPU_SAMSUNG_EXYNOS5
 	depends on ARCH_ARMV7
 	select CPU_SAMSUNG_EXYNOS
-	select EARLY_SERIAL_CONSOLE
+	select HAVE_UART_SPECIAL
+	# TODO remove EARLY_CONSOLE when we can run ramstage without early UART
+	# init.
+	select EARLY_CONSOLE
 	bool
 	default n
 

src/include/console/console.h

@@ -24,8 +24,8 @@
 #include <console/loglevel.h>
 #include <console/post_codes.h>
 
-#if CONFIG_CONSOLE_SERIAL8250 || CONFIG_CONSOLE_SERIAL8250MEM
-#include <uart8250.h>
+#if CONFIG_CONSOLE_SERIAL
+#include <uart.h>
 #endif
 #if CONFIG_USBDEBUG
 #include <usbdebug.h>

src/mainboard/google/snow/Kconfig

@@ -24,7 +24,6 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select ARCH_ARMV7
 	select CPU_SAMSUNG_EXYNOS5
 	select HAVE_UART_MEMORY_MAPPED
-	select CONSOLE_SERIAL_NONSTANDARD_MEM	# enable serial debugging
 #	select EC_GOOGLE_CHROMEEC
 	select BOARD_ROMSIZE_KB_4096
 	select DRIVER_MAXIM_MAX77686
@@ -71,7 +70,7 @@ config NR_DRAM_BANKS
 choice
 	prompt "Serial Console UART"
 	default CONSOLE_SERIAL_UART3
-	depends on CONSOLE_SERIAL_NONSTANDARD_MEM
+	depends on CONSOLE_SERIAL_UART
 
 config CONSOLE_SERIAL_UART0
 	bool "UART0"
@@ -97,7 +96,7 @@ endchoice
 
 config CONSOLE_SERIAL_UART_ADDRESS
 	hex
-	depends on CONSOLE_SERIAL_NONSTANDARD_MEM
+	depends on CONSOLE_SERIAL_UART
 	default 0x12c00000 if CONSOLE_SERIAL_UART0
 	default 0x12c10000 if CONSOLE_SERIAL_UART1
 	default 0x12c20000 if CONSOLE_SERIAL_UART2

src/mainboard/google/snow/bootblock.c

@@ -17,7 +17,7 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#if CONFIG_EARLY_SERIAL_CONSOLE
+#if CONFIG_EARLY_CONSOLE
 #include <types.h>
 #include <arch/io.h>
 #include <cbfs.h>
@@ -40,7 +40,7 @@ void bootblock_mainboard_init(void)
 	arm_ratios = get_arm_clk_ratios();
 	system_clock_init(mem, arm_ratios);
 
-#if CONFIG_EARLY_SERIAL_CONSOLE
+#if CONFIG_EARLY_CONSOLE
 	exynos_pinmux_config(PERIPH_ID_UART3, PINMUX_FLAG_NONE);
 	uart_init();
 	printk(BIOS_INFO, "\n\n\n%s: UART initialized\n", __func__);