[U-Boot] [PATCH v2 02/10] spl: misc: Allow misc drivers in SPL and TPL

[Simon Glass]

In some cases it is necessary to read the keyboard in early phases of
U-Boot. The cros_ec keyboard is kept in the misc directory. Update the
config to allow this.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

Changes in v2:
- Leave the misc uclass alone since it stops sandbox_spl working

 drivers/misc/Kconfig  | 72 +++++++++++++++++++++++++++++++++++++++++++
 drivers/misc/Makefile |  8 +++--
 2 files changed, 77 insertions(+), 3 deletions(-)

diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 48febc47d26..802046cf966 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -13,6 +13,24 @@ config MISC
 	  set of generic read, write and ioctl methods may be used to
 	  access the device.
 
+config SPL_MISC
+	bool "Enable Driver Model for Misc drivers in SPL"
+	depends on SPL_DM
+	help
+	  Enable driver model for miscellaneous devices. This class is
+	  used only for those do not fit other more general classes. A
+	  set of generic read, write and ioctl methods may be used to
+	  access the device.
+
+config TPL_MISC
+	bool "Enable Driver Model for Misc drivers in TPL"
+	depends on TPL_DM
+	help
+	  Enable driver model for miscellaneous devices. This class is
+	  used only for those do not fit other more general classes. A
+	  set of generic read, write and ioctl methods may be used to
+	  access the device.
+
 config ALTERA_SYSID
 	bool "Altera Sysid support"
 	depends on MISC
@@ -68,6 +86,24 @@ config CROS_EC
 	  control access to the battery and main PMIC depending on the
 	  device. You can use the 'crosec' command to access it.
 
+config SPL_CROS_EC
+	bool "Enable Chrome OS EC in SPL"
+	help
+	  Enable access to the Chrome OS EC in SPL. This is a separate
+	  microcontroller typically available on a SPI bus on Chromebooks. It
+	  provides access to the keyboard, some internal storage and may
+	  control access to the battery and main PMIC depending on the
+	  device. You can use the 'crosec' command to access it.
+
+config TPL_CROS_EC
+	bool "Enable Chrome OS EC in TPL"
+	help
+	  Enable access to the Chrome OS EC in TPL. This is a separate
+	  microcontroller typically available on a SPI bus on Chromebooks. It
+	  provides access to the keyboard, some internal storage and may
+	  control access to the battery and main PMIC depending on the
+	  device. You can use the 'crosec' command to access it.
+
 config CROS_EC_I2C
 	bool "Enable Chrome OS EC I2C driver"
 	depends on CROS_EC
@@ -86,6 +122,24 @@ config CROS_EC_LPC
 	  through a legacy port interface, so on x86 machines the main
 	  function of the EC is power and thermal management.
 
+config SPL_CROS_EC_LPC
+	bool "Enable Chrome OS EC LPC driver in SPL"
+	depends on CROS_EC
+	help
+	  Enable I2C access to the Chrome OS EC. This is used on x86
+	  Chromebooks such as link and falco. The keyboard is provided
+	  through a legacy port interface, so on x86 machines the main
+	  function of the EC is power and thermal management.
+
+config TPL_CROS_EC_LPC
+	bool "Enable Chrome OS EC LPC driver in TPL"
+	depends on CROS_EC
+	help
+	  Enable I2C access to the Chrome OS EC. This is used on x86
+	  Chromebooks such as link and falco. The keyboard is provided
+	  through a legacy port interface, so on x86 machines the main
+	  function of the EC is power and thermal management.
+
 config CROS_EC_SANDBOX
 	bool "Enable Chrome OS EC sandbox driver"
 	depends on CROS_EC && SANDBOX
@@ -95,6 +149,24 @@ config CROS_EC_SANDBOX
 	  EC flash read/write/erase support and a few other things. It is
 	  enough to perform a Chrome OS verified boot on sandbox.
 
+config SPL_CROS_EC_SANDBOX
+	bool "Enable Chrome OS EC sandbox driver in SPL"
+	depends on SPL_CROS_EC && SANDBOX
+	help
+	  Enable a sandbox emulation of the Chrome OS EC in SPL. This supports
+	  keyboard (use the -l flag to enable the LCD), verified boot context,
+	  EC flash read/write/erase support and a few other things. It is
+	  enough to perform a Chrome OS verified boot on sandbox.
+
+config TPL_CROS_EC_SANDBOX
+	bool "Enable Chrome OS EC sandbox driver in TPL"
+	depends on TPL_CROS_EC && SANDBOX
+	help
+	  Enable a sandbox emulation of the Chrome OS EC in TPL. This supports
+	  keyboard (use the -l flag to enable the LCD), verified boot context,
+	  EC flash read/write/erase support and a few other things. It is
+	  enough to perform a Chrome OS verified boot on sandbox.
+
 config CROS_EC_SPI
 	bool "Enable Chrome OS EC SPI driver"
 	depends on CROS_EC
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 302d4415927..6efb8134b14 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -4,11 +4,13 @@
 # Wolfgang Denk, DENX Software Engineering, wd at denx.de.
 
 obj-$(CONFIG_MISC) += misc-uclass.o
+
+obj-$(CONFIG_$(SPL_TPL_)CROS_EC) += cros_ec.o
+obj-$(CONFIG_$(SPL_TPL_)CROS_EC_SANDBOX) += cros_ec_sandbox.o
+obj-$(CONFIG_$(SPL_TPL_)CROS_EC_LPC) += cros_ec_lpc.o
+
 ifndef CONFIG_SPL_BUILD
-obj-$(CONFIG_CROS_EC) += cros_ec.o
-obj-$(CONFIG_CROS_EC_LPC) += cros_ec_lpc.o
 obj-$(CONFIG_CROS_EC_I2C) += cros_ec_i2c.o
-obj-$(CONFIG_CROS_EC_SANDBOX) += cros_ec_sandbox.o
 obj-$(CONFIG_CROS_EC_SPI) += cros_ec_spi.o
 endif
 
-- 
2.19.1.1215.g8438c0b245-goog