split kernel into 2 stages; second stage gets copied to 0x0 and runs from there

1 files changed, 0 insertions, 27 deletions

diff --git a/boot.S b/boot.S
deleted file mode 100644
index 593ed11..0000000
--- a/boot.S
+++ /dev/null
@@ -1,27 +0,0 @@
-// armv7 mode
- 
-// Entry point for the kernel.
-// r15 -> should begin execution at 0x8000.
-// r0 -> 0x00000000
-// r1 -> 0x00000C42
-// r2 -> 0x00000100 - start of ATAGS
-// preserve these registers as argument for kernel_main
-	
-.global _boot // make entry point label global
-_boot:
-        // Only let the first core execute
-        mrc p15, 0, r3, c0, c0, 5
-        and r3, r3, #3
-        cmp r3, #0
-        beq proceed
-	// this is a kind of blef - races can theoretically still occur
-	// when the main core overwrites this part of memory
-	wfe
-
-proceed:
-        // Initialize the stack (_stack_top is defined in linker.ld)
-        ldr sp, =_stack_top
- 
-        // Call kernel_main
-        ldr r3, =kernel_main
-        bx r3