rockchip: rk3326: add AArch32 execution state support

Support boot ARMv8 based RK3326 on AARCH32 state

Change-Id: Ifb788ba71057f4f72dba9e1071c3609308644a9b
Signed-off-by: Joseph Chen <chenjh@rock-chips.com>

arch/arm/mach-rockchip/Kconfig

@@ -2,13 +2,13 @@ if ARCH_ROCKCHIP
 
 config ROCKCHIP_PX30
 	bool "Support Rockchip PX30"
-	select ARM64
+	select ARM64 if !ARM64_BOOT_AARCH32
 	select GICV2
 	select ARM_SMCCC
 	select SUPPORT_SPL
 	select SUPPORT_TPL
-	select SPL
-	select TPL
+	select SPL if !ARM64_BOOT_AARCH32
+	select TPL if !ARM64_BOOT_AARCH32
 	select TPL_TINY_FRAMEWORK if TPL
 
 	imply SPL_SERIAL_SUPPORT

arch/arm/mach-rockchip/px30/px30.c

@@ -11,7 +11,6 @@
 #include <asm/arch/grf_px30.h>
 #include <asm/arch/hardware.h>
 #include <asm/arch/uart.h>
-#include <asm/armv8/mmu.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/cru_px30.h>
 #include <dt-bindings/clock/px30-cru.h>
@@ -26,6 +25,9 @@
 
 #define QOS_PRIORITY_LEVEL(h, l)	((((h) & 3) << 8) | ((l) & 3))
 
+#ifdef CONFIG_ARM64
+#include <asm/armv8/mmu.h>
+
 static struct mm_region px30_mem_map[] = {
 	{
 		.virt = 0x0UL,
@@ -47,6 +49,7 @@ static struct mm_region px30_mem_map[] = {
 };
 
 struct mm_region *mem_map = px30_mem_map;
+#endif
 
 int arch_cpu_init(void)
 {

include/configs/px30_common.h

@@ -52,6 +52,7 @@
 #define CONFIG_USB_FUNCTION_MASS_STORAGE
 #define CONFIG_ROCKUSB_G_DNL_PID        0x330d
 
+#ifdef CONFIG_ARM64
 #define ENV_MEM_LAYOUT_SETTINGS \
 	"scriptaddr=0x00500000\0" \
 	"pxefile_addr_r=0x00600000\0" \
@@ -59,6 +60,14 @@
 	"kernel_addr_r=0x00280000\0" \
 	"kernel_addr_c=0x03e80000\0" \
 	"ramdisk_addr_r=0x0a200000\0"
+#else
+#define ENV_MEM_LAYOUT_SETTINGS \
+	"scriptaddr=0x00000000\0" \
+	"pxefile_addr_r=0x00100000\0" \
+	"fdt_addr_r=0x08300000\0" \
+	"kernel_addr_r=0x02008000\0" \
+	"ramdisk_addr_r=0x0a200000\0"
+#endif
 
 #include <config_distro_bootcmd.h>
 #define CONFIG_EXTRA_ENV_SETTINGS \