arm: Add zImage support

Currently Xen on ARM is only supported zImage for guest kernel. Adding support
for ARM ELF in the toolstack looks a bit complicate for ARM (though there is
an x86 support).

diff --git a/sys/arm/arm/locore-v6.S b/sys/arm/arm/locore-v6.S
index 5a5222877da946b294f6d8b80c4a636bb56c4b0f..ea1ed9834b00d4f2f8854ac3e2721f807dc9c67c 100644 (file)
--- a/sys/arm/arm/locore-v6.S
+++ b/sys/arm/arm/locore-v6.S
@@ -101,8 +101,19 @@ __FBSDID("$FreeBSD$");
        .globl  btext
 btext:
 ASENTRY_NP(_start)
+       .rept 8
+       mov r0, r0
+       .endr
+
+       b start
+
+       .word 0x016f2818
+       .word 0                 /* absolute load/run zImage address or 0 for PIC */
+       .word (_edata - btext)
+
        STOP_UNWINDING          /* Can't unwind into the bootloader! */
 
+start:
        /* Make sure interrupts are disabled. */
        cpsid   ifa