Date: Sun, 31 Mar 2013 22:43:16 +0000 (UTC) From: Ian Lepore <ian@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r248962 - head/sys/boot/arm/uboot Message-ID: <201303312243.r2VMhGcV018951@svn.freebsd.org>
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Author: ian Date: Sun Mar 31 22:43:16 2013 New Revision: 248962 URL: http://svnweb.freebsd.org/changeset/base/248962 Log: When running on armv6, set alignment checking to modulo-4 mode rather than modulo-8, because clang emits ldrd and strd instructions for addresses that are only 4-byte aligned Modified: head/sys/boot/arm/uboot/start.S Modified: head/sys/boot/arm/uboot/start.S ============================================================================== --- head/sys/boot/arm/uboot/start.S Sun Mar 31 22:42:25 2013 (r248961) +++ head/sys/boot/arm/uboot/start.S Sun Mar 31 22:43:16 2013 (r248962) @@ -27,6 +27,7 @@ */ #include <machine/asm.h> +#include <machine/armreg.h> /* * Entry point to the loader that U-Boot passes control to. @@ -42,6 +43,13 @@ _start: ldr ip, =saved_regs str r8, [ip, #0] +#ifdef _ARM_ARCH_6 + mrc p15, 0, r2, c1, c0, 0 + orr r2, r2, #(CPU_CONTROL_UNAL_ENABLE) + orr r2, r2, #(CPU_CONTROL_AFLT_ENABLE) + mcr p15, 0, r2, c1, c0, 0 +#endif + /* Start loader */ b main
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