add bsp/raspi4 gicv2

Author: bigmagic123

bsp/raspberry-pi/raspi4/driver/board.c

@@ -75,10 +75,6 @@ void rt_hw_board_init(void)
     rt_hw_interrupt_init(); // in libcpu/interrupt.c. Set some data structures, no operation on device
     rt_hw_vector_init();    // in libcpu/interrupt.c. == rt_cpu_vector_set_base((rt_ubase_t)&system_vectors);
 
-    /* initialize timer for os tick */
-    rt_hw_timer_init();
-    rt_thread_idle_sethook(idle_wfi);
-
     /* initialize uart */
     rt_hw_uart_init();      // driver/drv_uart.c
 #ifdef RT_USING_CONSOLE
@@ -91,6 +87,9 @@ void rt_hw_board_init(void)
     rt_kprintf("heap: 0x%08x - 0x%08x\n", RT_HW_HEAP_BEGIN, RT_HW_HEAP_END);
     rt_system_heap_init(RT_HW_HEAP_BEGIN, RT_HW_HEAP_END);
 #endif
+        /* initialize timer for os tick */
+    rt_hw_timer_init();
+    rt_thread_idle_sethook(idle_wfi);
 
 #ifdef RT_USING_COMPONENTS_INIT
     rt_components_board_init();

bsp/raspberry-pi/raspi4/driver/iomap.h

@@ -1,6 +1,7 @@
 #ifndef __RASPI4_H__
 #define __RASPI4_H__
 
+#define ARM_GIC_NR_IRQS     512
 #define INTC_BASE   0xff800000
 #define GIC_V2_DISTRIBUTOR_BASE     (INTC_BASE + 0x00041000)
 #define GIC_V2_CPU_INTERFACE_BASE   (INTC_BASE + 0x00042000)

bsp/raspberry-pi/raspi4/rtconfig.py

@@ -32,7 +32,7 @@
     OBJDUMP = PREFIX + 'objdump'
     OBJCPY  = PREFIX + 'objcopy'
 
-    DEVICE = ' -march=armv8-a -mtune=cortex-a57'
+    DEVICE = ' -march=armv8-a -mtune=cortex-a72'
     CFLAGS = DEVICE + ' -Wall'
     AFLAGS = ' -c' + ' -x assembler-with-cpp -D__ASSEMBLY__'
     LFLAGS  = DEVICE + ' -nostartfiles -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,system_vectors -T link.lds'