update, may not work now

1 files changed, 34 insertions, 0 deletions

diff --git a/kernel.c b/kernel.c
index 096cd9a..e783465 100644
--- a/kernel.c
+++ b/kernel.c
@@ -2,7 +2,10 @@
 #include "demo_functionality.h"
 #include "paging.h"
 #include "interrupts.h"
+#include "strings.h"
+#include "psr.h"
 
+extern void enable_irq ( void );
 void kernel_main(uint32_t r0, uint32_t r1, uint32_t atags)
 {
   // Declare as unused
@@ -54,6 +57,37 @@ void kernel_main(uint32_t r0, uint32_t r1, uint32_t atags)
     uart_putc(*(int*)(0x40000034) );
     *(int *)(0x40000034) = 1;
 
+    uint32_to_bits(*(int*)(0xE000ED24),buf);
+    uart_puts(buf);
+    uart_puts("\r\n");
+    uint32_to_bits(*(int*)(0xE002ED24),buf);
+    uart_puts(buf);
+    uart_puts("\r\n");
+
+    int regVal;
+    asm("mrs %0, cpsr":"=r"(regVal):);
+    uint32_to_bits(regVal,buf);
+    uart_puts(buf);
+    uart_puts("\r\n");
+
+//    ; Read ICC_IGRPEN1 into Rt
+//    MCR p15,0,<Rt>,c12,c12,7 ; Write Rt to ICC_IGRPEN1
+
+    uint32_t ICC_IGRPEN1;
+    asm(" MRC p15,0, %0 ,c12,c12,7" : "=r"(ICC_IGRPEN1) :: "memory"); //READ FROM ICC_IGRPEN1
+
+    uint32_to_bits(ICC_IGRPEN1,buf);
+    uart_puts(buf);
+    uart_puts("\r\n");
+
+
+    //    uint32_to_bits(*(int*)(0x40000024),buf);
+//    uart_puts(buf);
+//    uart_puts("\r\n");
+
+//    *(int *)(0x7E00B210) = 1;
+//    *(int *)(0x7E00B214) = 1;
+//    *(int *)(0x7E00B218) = 1;
 
     // prints some info and sets up a section for PL0 code, loads a blob
   // there and jumps to it... never, ever, ever returns