[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH] xen/arm: build as zImage
The zImage format is extremely simple: it only consists of a magic number and 2 addresses in a specific position (see http://www.simtec.co.uk/products/SWLINUX/files/booting_article.html#d0e309). Some bootloaders expect a zImage; considering that it doesn't cost us much to build Xen compatible with the format, make it so. Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> diff --git a/xen/arch/arm/head.S b/xen/arch/arm/head.S index 25c4cfe..de9cdb2 100644 --- a/xen/arch/arm/head.S +++ b/xen/arch/arm/head.S @@ -22,6 +22,9 @@ #include <asm/processor-ca15.h> #include <asm/asm_defns.h> +#define ZIMAGE_MAGIC_NUMBER 0x016f2818 +#define XEN_PHYS_ADDRESS 0x80000000 + #define PT_PT 0xe7f /* nG=1, AF=1, SH=10, AP=01, NS=1, ATTR=111, T=1, P=1 */ #define PT_MEM 0xe7d /* nG=1, AF=1, SH=10, AP=01, NS=1, ATTR=111, T=0, P=1 */ #define PT_DEV 0xe71 /* nG=1, AF=1, SH=10, AP=01, NS=1, ATTR=100, T=0, P=1 */ @@ -52,6 +55,18 @@ * or the initial pagetable code below will need adjustment. */ .global start start: + + .rept 7 + mov r0, r0 + .endr + mov r0, r0 + b 1f + + .word ZIMAGE_MAGIC_NUMBER @ Magic numbers to help the loader + .word (_start + XEN_PHYS_ADDRESS) @ absolute load/run zImage address + .word (_end + XEN_PHYS_ADDRESS) @ zImage end address + +1: cpsid aif /* Disable all interrupts */ /* Save the bootloader arguments in less-clobberable registers */ _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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