powerpc, 8xx: move Serial driver to drivers/serial/

At the same time, move to Kconfig

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>

README

@@ -687,29 +687,10 @@ The following options need to be configured:
 		Define this variable to enable hw flow control in serial driver.
 		Current user of this option is drivers/serial/nsl16550.c driver
 
-- Console Interface:
-		Depending on board, define exactly one serial port
-		(CONFIG_8xx_CONS_SMC1 or CONFIG_8xx_CONS_SMC2),
-		or switch off the serial console by defining
-		CONFIG_8xx_CONS_NONE
-
-		Note: if CONFIG_8xx_CONS_NONE is defined, the serial
-		port routines must be defined elsewhere
-		(i.e. serial_init(), serial_getc(), ...)
-
 - Console Baudrate:
 		CONFIG_BAUDRATE - in bps
 		Select one of the baudrates listed in
 		CONFIG_SYS_BAUDRATE_TABLE, see below.
-		CONFIG_SYS_BRGCLK_PRESCALE, baudrate prescale
-
-- Console Rx buffer length
-		With CONFIG_SYS_SMC_RXBUFLEN it is possible to define
-		the maximum receive buffer length for the SMC.
-		This option is actual only for 8xx possible.
-		If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE
-		must be defined, to setup the maximum idle timeout for
-		the SMC.
 
 - Autoboot Command:
 		CONFIG_BOOTCOMMAND

arch/powerpc/cpu/mpc8xx/Makefile

@@ -13,5 +13,4 @@ obj-$(CONFIG_OF_LIBFDT) += fdt.o
 obj-$(CONFIG_CMD_IMMAP) += immap.o
 obj-y	+= interrupts.o
 obj-$(CONFIG_CMD_REGINFO) += reginfo.o
-obj-y	+= serial.o
 obj-y	+= speed.o

drivers/serial/Kconfig

@@ -491,4 +491,57 @@ config STI_ASC_SERIAL
 	  on STiH410 SoC. This is a basic implementation,  it supports
 	  following baudrate 9600, 19200, 38400, 57600 and 115200.
 
+config MPC8XX_CONS
+	bool "Console driver for MPC8XX"
+	depends on 8xx
+	default y
+
+choice
+	prompt "Console port"
+	default 8xx_CONS_SMC1
+	depends on MPC8XX_CONS
+	help
+	  Depending on board, select one serial port
+	  (CONFIG_8xx_CONS_SMC1 or CONFIG_8xx_CONS_SMC2)
+
+config 8xx_CONS_SMC1
+	bool "SMC1"
+
+config 8xx_CONS_SMC2
+	bool "SMC2"
+
+endchoice
+
+config SYS_SMC_RXBUFLEN
+	int "Console Rx buffer length"
+	depends on MPC8XX_CONS
+	default 1
+	help
+	  With CONFIG_SYS_SMC_RXBUFLEN it is possible to define
+	  the maximum receive buffer length for the SMC.
+	  This option is actual only for 8xx possible.
+	  If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE
+	  must be defined, to setup the maximum idle timeout for
+	  the SMC.
+
+config SYS_MAXIDLE
+	int "maximum idle timeout"
+	depends on MPC8XX_CONS
+	default 0
+
+config SYS_BRGCLK_PRESCALE
+	int "BRG Clock Prescale"
+	depends on MPC8XX_CONS
+	default 1
+
+config SYS_SDSR
+	hex "SDSR Value"
+	depends on MPC8XX_CONS
+	default 0x83
+
+config SYS_SDMR
+	hex "SDMR Value"
+	depends on MPC8XX_CONS
+	default 0
+
 endmenu

drivers/serial/Makefile

@@ -48,6 +48,7 @@ obj-$(CONFIG_STM32X7_SERIAL) += serial_stm32x7.o
 obj-$(CONFIG_BCM283X_MU_SERIAL) += serial_bcm283x_mu.o
 obj-$(CONFIG_MSM_SERIAL) += serial_msm.o
 obj-$(CONFIG_MVEBU_A3700_UART) += serial_mvebu_a3700.o
+obj-$(CONFIG_MPC8XX_CONS) += serial_mpc8xx.o
 
 ifndef CONFIG_SPL_BUILD
 obj-$(CONFIG_USB_TTY) += usbtty.o

drivers/serial/serial_mpc8xx.c

@@ -14,8 +14,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-#if !defined(CONFIG_8xx_CONS_NONE)	/* No Console at all */
-
 #if defined(CONFIG_8xx_CONS_SMC1)	/* Console on SMC1 */
 #define	SMC_INDEX	0
 #define PROFF_SMC	PROFF_SMC1
@@ -30,15 +28,6 @@ DECLARE_GLOBAL_DATA_PTR;
 
 #endif /* CONFIG_8xx_CONS_SMCx */
 
-#if !defined(CONFIG_SYS_SMC_RXBUFLEN)
-#define CONFIG_SYS_SMC_RXBUFLEN	1
-#define CONFIG_SYS_MAXIDLE	0
-#else
-#if !defined(CONFIG_SYS_MAXIDLE)
-#error "you must define CONFIG_SYS_MAXIDLE"
-#endif
-#endif
-
 struct serialbuffer {
 	cbd_t	rxbd;		/* Rx BD */
 	cbd_t	txbd;		/* Tx BD */
@@ -56,9 +45,7 @@ static void serial_setdivisor(cpm8xx_t __iomem *cp)
 		divisor = (50 * 1000 * 1000 + 8 * 9600) / 16 / 9600;
 	}
 
-#ifdef CONFIG_SYS_BRGCLK_PRESCALE
 	divisor /= CONFIG_SYS_BRGCLK_PRESCALE;
-#endif
 
 	if (divisor <= 0x1000)
 		out_be32(&cp->cp_brgc1, ((divisor - 1) << 1) | CPM_BRG_EN);
@@ -110,18 +97,10 @@ static int smc_init(void)
 	out_be32(&im->im_siu_conf.sc_sdcr, 1);
 
 	/* clear error conditions */
-#ifdef	CONFIG_SYS_SDSR
 	out_8(&im->im_sdma.sdma_sdsr, CONFIG_SYS_SDSR);
-#else
-	out_8(&im->im_sdma.sdma_sdsr, 0x83);
-#endif
 
 	/* clear SDMA interrupt mask */
-#ifdef	CONFIG_SYS_SDMR
 	out_8(&im->im_sdma.sdma_sdmr, CONFIG_SYS_SDMR);
-#else
-	out_8(&im->im_sdma.sdma_sdmr, 0x00);
-#endif
 
 	/* Use Port B for SMCx instead of other functions. */
 	setbits_be32(&cp->cp_pbpar, IOPINS);
@@ -275,5 +254,3 @@ void mpc8xx_serial_initialize(void)
 {
 	serial_register(&serial_smc_device);
 }
-
-#endif	/* CONFIG_8xx_CONS_NONE */

scripts/config_whitelist.txt

@@ -12,9 +12,6 @@ CONFIG_83XX_GENERIC_PCIE_REGISTER_HOSES
 CONFIG_83XX_PCICLK
 CONFIG_83XX_PCI_STREAMING
 CONFIG_88F5182
-CONFIG_8xx_CONS_NONE
-CONFIG_8xx_CONS_SMC1
-CONFIG_8xx_CONS_SMC2
 CONFIG_A003399_NOR_WORKAROUND
 CONFIG_A008044_WORKAROUND
 CONFIG_ACX517AKN
@@ -2506,7 +2503,6 @@ CONFIG_SYS_BR6_64M
 CONFIG_SYS_BR6_8M
 CONFIG_SYS_BR6_PRELIM
 CONFIG_SYS_BR7_PRELIM
-CONFIG_SYS_BRGCLK_PRESCALE
 CONFIG_SYS_BUSCLK
 CONFIG_SYS_CACHELINE_SHIFT
 CONFIG_SYS_CACHE_ACR0
@@ -4645,7 +4641,6 @@ CONFIG_SYS_SDIO_BASE0
 CONFIG_SYS_SDIO_BASE1
 CONFIG_SYS_SDIO_BASE2
 CONFIG_SYS_SDIO_BASE3
-CONFIG_SYS_SDMR
 CONFIG_SYS_SDRAM
 CONFIG_SYS_SDRAM1
 CONFIG_SYS_SDRAM_BASE
@@ -4691,7 +4686,6 @@ CONFIG_SYS_SDRC_MR_VAL5
 CONFIG_SYS_SDRC_TR_VAL
 CONFIG_SYS_SDRC_TR_VAL1
 CONFIG_SYS_SDRC_TR_VAL2
-CONFIG_SYS_SDSR
 CONFIG_SYS_SD_VOLTAGE
 CONFIG_SYS_SEC_MON_ADDR
 CONFIG_SYS_SEC_MON_OFFSET
@@ -4724,7 +4718,6 @@ CONFIG_SYS_SMC0_MODE0_VAL
 CONFIG_SYS_SMC0_PULSE0_VAL
 CONFIG_SYS_SMC0_SETUP0_VAL
 CONFIG_SYS_SMC_CSR0_VAL
-CONFIG_SYS_SMC_RXBUFLEN
 CONFIG_SYS_SMI_BASE
 CONFIG_SYS_SPANSION_BASE
 CONFIG_SYS_SPANSION_BOOT