flash/nor/eneispif: support ENE KB1200 ispi flash

Change-Id: I03bccceb1956ee121e6a3728b7d647ef1262fa23
Signed-off-by: Steven Chang <steven@ene.com.tw>
Reviewed-on: https://review.openocd.org/c/openocd/+/8136
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>

doc/openocd.texi

@@ -6776,6 +6776,24 @@ Note that in order for this command to take effect, the target needs to be reset
 supported.}
 @end deffn
 
+@deffn {Flash Driver} {eneispif}
+All versions of the KB1200 microcontrollers from ENE include internal
+flash. The eneispif flash driver supports the KB1200 family of devices. The driver
+automatically recognizes the specific version's flash parameters and
+autoconfigures itself. The flash bank starts at address 0x60000000. An optional additional
+parameter sets the address of eneispif controller, with the default address is 0x50101000.
+
+@example
+
+flash bank $_FLASHNAME eneispif 0x60000000 0 0 0 $_TARGETNAME \
+           0x50101000
+
+# Address defaults to 0x50101000
+flash bank $_FLASHNAME eneispif 0x60000000 0 0 0 $_TARGETNAME
+
+@end example
+@end deffn
+
 @deffn {Flash Driver} {esirisc}
 Members of the eSi-RISC family may optionally include internal flash programmed
 via the eSi-TSMC Flash interface. Additional parameters are required to

src/flash/nor/Makefile.am

@@ -28,6 +28,7 @@ NOR_DRIVERS = \
 	%D%/dsp5680xx_flash.c \
 	%D%/efm32.c \
 	%D%/em357.c \
+	%D%/eneispif.c \
 	%D%/esirisc_flash.c \
 	%D%/faux.c \
 	%D%/fespi.c \

src/flash/nor/driver.h

@@ -256,6 +256,7 @@ extern const struct flash_driver cfi_flash;
 extern const struct flash_driver dsp5680xx_flash;
 extern const struct flash_driver efm32_flash;
 extern const struct flash_driver em357_flash;
+extern const struct flash_driver eneispif_flash;
 extern const struct flash_driver esirisc_flash;
 extern const struct flash_driver faux_flash;
 extern const struct flash_driver fespi_flash;

src/flash/nor/drivers.c

@@ -33,6 +33,7 @@ static const struct flash_driver * const flash_drivers[] = {
 	&dsp5680xx_flash,
 	&efm32_flash,
 	&em357_flash,
+	&eneispif_flash,
 	&esirisc_flash,
 	&faux_flash,
 	&fm3_flash,