Support rk3568.(TODO: fix userland)

Ubiquitous/XiZi_AIoT/hardkernel/arch/arm/armv8-a/cortex-a72/core.h

@@ -79,15 +79,6 @@ __attribute__((always_inline)) static inline uint64_t EL0_mode() // Set ARM mode
 {
     uint64_t val = 0;
 
-    __asm__ __volatile__(
-        "mrs %0, spsr_el1"
-        : "=r"(val)
-        :
-        :);
-    val &= ~DIS_INT;
-    val &= ~SPSR_MODE_MASK;
-    val |= ARM_MODE_EL0_t;
-
     return val;
 }
 

Ubiquitous/XiZi_AIoT/hardkernel/arch/arm/armv8-a/cortex-a72/preboot_for_ok1028a-c/boot.S

@@ -40,10 +40,10 @@ _boot_start:
     mov     x5,     x2
     mul     x3,     x2, x1
     sub     x0,     x0, x3
+    mov     sp,     x0
 
     mov     x2,         #ARM_MODE_EL1_h | DIS_INT  
     msr     spsr_el1,   x2
-    mov     sp,         x0
 
     // bl el2_setup
 
@@ -106,6 +106,7 @@ el2_setup:
 
     mrs     x0, sctlr_el1
     orr     x0, x0, #(1 << 0)
+    bic     x0, x0, #(1 << 1)
     orr     x0, x0, #(1 << 2)
     msr     sctlr_el1, x0
 

Ubiquitous/XiZi_AIoT/hardkernel/arch/arm/armv8-a/cortex-a72/preboot_for_ok1028a-c/config.mk

@@ -1,6 +1,6 @@
 export CROSS_COMPILE ?= aarch64-none-elf-
 export DEVICE = -mtune=cortex-a55 -ffreestanding -fno-common -fno-stack-protector -fno-pie -no-pie
-export CFLAGS := $(DEVICE) -Wall -Werror -O0 -g -fno-omit-frame-pointer -fPIC 
+export CFLAGS := $(DEVICE) -Wall -Werror -O0 -g -fno-omit-frame-pointer -fPIC
 # export AFLAGS := -c $(DEVICE) -x assembler-with-cpp -D__ASSEMBLY__ -gdwarf-2
 export LFLAGS := $(DEVICE) -Wl,-T -Wl,$(KERNEL_ROOT)/hardkernel/arch/arm/armv8-a/cortex-a72/preboot_for_ok1028a-c/nxp_ls1028.lds -Wl,--start-group,-lgcc,-lc,--end-group
 export CXXFLAGS := 

Ubiquitous/XiZi_AIoT/hardkernel/arch/arm/armv8-a/cortex-a72/preboot_for_ok1028a-c/nxp_ls1028.lds

@@ -114,14 +114,14 @@ SECTIONS
   } > vir_ddr3
 
   . = ALIGN(0x1000);
-  PROVIDE(kernel_data_begin = .);
-
   _image_size = . - 0x0000006010000000;
+
   .bss : {
+    PROVIDE(kernel_data_begin = .);
     PROVIDE(__bss_start__ = .);
 		*(.bss .bss.* COMMON)
+    . = ALIGN(0x1000);
 		PROVIDE(__bss_end__ = .);
+	  PROVIDE(kernel_data_end = .);
   } > vir_ddr3
-  . = ALIGN(0x1000);
-	PROVIDE(kernel_data_end = .);
 }