autoboot: add CONFIG_AUTOBOOT to allow to not compile autoboot.c

Since commit bb597c0e ("common: bootdelay: move CONFIG_BOOTDELAY
into a Kconfig option"), CONFIG_BOOTDELAY is defined for all boards.

Prior to that commit, it was allowed to unset CONFIG_BOOTDELAY to
not compile common/autoboot.c, as described in common/Makefile:

  # This option is not just y/n - it can have a numeric value
  ifdef CONFIG_BOOTDELAY
  obj-y += autoboot.o
  endif

It was a bit odd to enable/disable code with an integer type option,
but it was how this option worked before that commit, and several
boards actually unset it to opt out of the autoboot feature.

This commit adds a new bool option, CONFIG_AUTOBOOT, and makes
CONFIG_BOOTDELAY depend on it.

I chose "default y" for this option because most boards use the
autoboot.  I added "# CONFIG_AUTOBOOT is not set" for the boards that
had not set CONFIG_BOOTDELAY prior to the bad commit.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

cmd/Kconfig

@@ -38,6 +38,12 @@ config SYS_PROMPT
 
 menu "Autoboot options"
 
+config AUTOBOOT
+	bool "Autoboot"
+	default y
+	help
+	  This enables the autoboot.  See doc/README.autoboot for detail.
+
 config AUTOBOOT_KEYED
 	bool "Stop autobooting via specific input key / string"
 	default n

common/Kconfig

@@ -100,6 +100,7 @@ endmenu
 config BOOTDELAY
 	int "delay in seconds before automatically booting"
 	default 2
+	depends on AUTOBOOT
 	help
 	  Delay before automatically running bootcmd;
 	  set to -1 to disable autoboot.

common/Makefile

@@ -15,10 +15,7 @@ ifdef CONFIG_SYS_HUSH_PARSER
 obj-y += cli_hush.o
 endif
 
-# This option is not just y/n - it can have a numeric value
-ifdef CONFIG_BOOTDELAY
-obj-y += autoboot.o
-endif
+obj-$(CONFIG_AUTOBOOT) += autoboot.o
 
 # This option is not just y/n - it can have a numeric value
 ifdef CONFIG_BOOT_RETRY_TIME

configs/10m50_defconfig

@@ -6,6 +6,7 @@ CONFIG_DEFAULT_DEVICE_TREE="10m50_devboard"
 CONFIG_FIT=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_HUSH_PARSER=y
+# CONFIG_AUTOBOOT is not set
 CONFIG_CMD_CPU=y
 # CONFIG_CMD_BOOTD is not set
 # CONFIG_CMD_IMLS is not set

configs/3c120_defconfig

@@ -6,6 +6,7 @@ CONFIG_DEFAULT_DEVICE_TREE="3c120_devboard"
 CONFIG_FIT=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_HUSH_PARSER=y
+# CONFIG_AUTOBOOT is not set
 CONFIG_CMD_CPU=y
 # CONFIG_CMD_BOOTD is not set
 # CONFIG_CMD_IMLS is not set

configs/M5249EVB_defconfig

 CONFIG_M68K=y
 CONFIG_TARGET_M5249EVB=y
 CONFIG_SYS_TEXT_BASE=0xffe00000
+# CONFIG_AUTOBOOT is not set
 CONFIG_LOOPW=y
 # CONFIG_CMD_SETEXPR is not set
 # CONFIG_CMD_NET is not set

configs/am335x_sl50_defconfig

@@ -6,6 +6,7 @@ CONFIG_SPL_STACK_R=y
 CONFIG_FIT=y
 CONFIG_SYS_EXTRA_OPTIONS="EMMC_BOOT"
 CONFIG_HUSH_PARSER=y
+# CONFIG_AUTOBOOT is not set
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMLS is not set
 CONFIG_CMD_ASKENV=y

configs/bcm11130_defconfig

@@ -2,6 +2,7 @@ CONFIG_ARM=y
 CONFIG_TARGET_BCM28155_AP=y
 CONFIG_SYS_EXTRA_OPTIONS="SYS_MMC_ENV_DEV=0"
 CONFIG_HUSH_PARSER=y
+# CONFIG_AUTOBOOT is not set
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMLS is not set
 CONFIG_CMD_ASKENV=y

configs/bcm11130_nand_defconfig

@@ -2,6 +2,7 @@ CONFIG_ARM=y
 CONFIG_TARGET_BCM28155_AP=y
 CONFIG_SYS_EXTRA_OPTIONS="NAND"
 CONFIG_HUSH_PARSER=y
+# CONFIG_AUTOBOOT is not set
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMLS is not set
 CONFIG_CMD_ASKENV=y

configs/bcm28155_ap_defconfig

@@ -2,6 +2,7 @@ CONFIG_ARM=y
 CONFIG_ENABLE_ARM_SOC_BOOT0_HOOK=y
 CONFIG_TARGET_BCM28155_AP=y
 CONFIG_HUSH_PARSER=y
+# CONFIG_AUTOBOOT is not set
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMLS is not set
 CONFIG_CMD_ASKENV=y

configs/bcm28155_w1d_defconfig

@@ -3,6 +3,7 @@ CONFIG_ENABLE_ARM_SOC_BOOT0_HOOK=y
 CONFIG_TARGET_BCM28155_AP=y
 CONFIG_SYS_EXTRA_OPTIONS="BCM_SF2_ETH,BCM_SF2_ETH_GMAC"
 CONFIG_HUSH_PARSER=y
+# CONFIG_AUTOBOOT is not set
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMLS is not set
 CONFIG_CMD_ASKENV=y

configs/bcm911360_entphn-ns_defconfig

@@ -2,6 +2,7 @@ CONFIG_ARM=y
 CONFIG_TARGET_BCMCYGNUS=y
 CONFIG_SYS_EXTRA_OPTIONS="SYS_SDRAM_SIZE=0x20000000,ARMV7_NONSEC"
 CONFIG_HUSH_PARSER=y
+# CONFIG_AUTOBOOT is not set
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMLS is not set
 CONFIG_CMD_ASKENV=y

configs/bcm911360_entphn_defconfig

@@ -2,6 +2,7 @@ CONFIG_ARM=y
 CONFIG_TARGET_BCMCYGNUS=y
 CONFIG_SYS_EXTRA_OPTIONS="SYS_SDRAM_SIZE=0x20000000"
 CONFIG_HUSH_PARSER=y
+# CONFIG_AUTOBOOT is not set
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMLS is not set
 CONFIG_CMD_ASKENV=y

configs/bcm911360k_defconfig

@@ -2,6 +2,7 @@ CONFIG_ARM=y
 CONFIG_TARGET_BCMCYGNUS=y
 CONFIG_SYS_EXTRA_OPTIONS="SYS_SDRAM_SIZE=0x40000000"
 CONFIG_HUSH_PARSER=y
+# CONFIG_AUTOBOOT is not set
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMLS is not set
 CONFIG_CMD_ASKENV=y

configs/bcm958300k-ns_defconfig

@@ -2,6 +2,7 @@ CONFIG_ARM=y
 CONFIG_TARGET_BCMCYGNUS=y
 CONFIG_SYS_EXTRA_OPTIONS="SYS_SDRAM_SIZE=0x40000000,ARMV7_NONSEC"
 CONFIG_HUSH_PARSER=y
+# CONFIG_AUTOBOOT is not set
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMLS is not set
 CONFIG_CMD_ASKENV=y

configs/bcm958300k_defconfig

@@ -2,6 +2,7 @@ CONFIG_ARM=y
 CONFIG_TARGET_BCMCYGNUS=y
 CONFIG_SYS_EXTRA_OPTIONS="SYS_SDRAM_SIZE=0x40000000"
 CONFIG_HUSH_PARSER=y
+# CONFIG_AUTOBOOT is not set
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMLS is not set
 CONFIG_CMD_ASKENV=y

configs/bcm958305k_defconfig

@@ -2,6 +2,7 @@ CONFIG_ARM=y
 CONFIG_TARGET_BCMCYGNUS=y
 CONFIG_SYS_EXTRA_OPTIONS="SYS_SDRAM_SIZE=0x40000000"
 CONFIG_HUSH_PARSER=y
+# CONFIG_AUTOBOOT is not set
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMLS is not set
 CONFIG_CMD_ASKENV=y

configs/bcm958622hr_defconfig

@@ -2,6 +2,7 @@ CONFIG_ARM=y
 CONFIG_TARGET_BCMNSP=y
 CONFIG_SYS_EXTRA_OPTIONS="SYS_SDRAM_SIZE=0x01000000"
 CONFIG_HUSH_PARSER=y
+# CONFIG_AUTOBOOT is not set
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMLS is not set
 CONFIG_CMD_ASKENV=y

configs/bf506f-ezkit_defconfig

 CONFIG_BLACKFIN=y
 CONFIG_TARGET_BF506F_EZKIT=y
+# CONFIG_AUTOBOOT is not set
 # CONFIG_CMD_BDI is not set
 # CONFIG_CMD_CONSOLE is not set
 # CONFIG_CMD_BOOTD is not set

configs/dnp5370_defconfig

 CONFIG_BLACKFIN=y
 CONFIG_TARGET_DNP5370=y
+# CONFIG_AUTOBOOT is not set
 CONFIG_CMD_GPIO=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_MII=y