platform: Add support for i.MX8X

DSP integrations for i.MX8 and i.MX8X are very similar
from the DSP point of view.

The only notable difference at this point is the IRQSTEER
address.

i.MX8 means for now i.MX8QM.
i.MX8X means for now i.MX8QXP.

There might be other variants in the future.

https://www.nxp.com/products/processors-and-microcontrollers/arm-processors/i.mx-applications-processors/i.mx-8-processors:IMX8-SERIES

Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>

src/arch/xtensa/CMakeLists.txt

@@ -25,6 +25,8 @@ elseif(CONFIG_TIGERLAKE)
 	endif()
 elseif(CONFIG_IMX8)
 	set(platform_folder imx8)
+elseif(CONFIG_IMX8X)
+	set(platform_folder imx8)
 endif()
 
 set(fw_name ${CONFIG_FIRMWARE_SHORT_NAME})

src/arch/xtensa/configs/imx8x_defconfig

@@ -0,0 +1 @@
+CONFIG_IMX8X=y

src/platform/CMakeLists.txt

@@ -14,7 +14,7 @@ elseif(CONFIG_ICELAKE)
 	add_subdirectory(icelake)
 elseif(CONFIG_TIGERLAKE)
 	add_subdirectory(tigerlake)
-elseif(CONFIG_IMX8)
+elseif(CONFIG_IMX8 OR CONFIG_IMX8X)
 	add_subdirectory(imx8)
 endif()
 

src/platform/Kconfig

@@ -171,6 +171,19 @@ config IMX8
 	help
 	  Select if your target platform is imx8-compatible
 
+config IMX8X
+	bool "Build for NXP i.MX8X"
+	select HAVE_RESET_VECTOR_ROM
+	select INTERRUPT_LEVEL_1
+	select INTERRUPT_LEVEL_2
+	select INTERRUPT_LEVEL_3
+	select HOST_PTABLE
+	select DUMMY_DMA
+	select WAITI_DELAY
+	select IMX
+	help
+	  Select if your target platform is imx8x-compatible
+
 endchoice
 
 config INTEL
@@ -247,6 +260,7 @@ config FIRMWARE_SHORT_NAME
 	default "icl" if ICELAKE
 	default "tgl" if TIGERLAKE
 	default "imx8" if IMX8
+	default "imx8x" if IMX8X
 	default ""
 	help
 	  3-characters long firmware identifer