From: Fabio Estevam Date: Mon, 23 Feb 2015 12:09:08 +0000 (-0300) Subject: mx31: Fix boot hang by avoiding vector relocation X-Git-Tag: v2015.04-rc4~118^2~9 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=fe021777c7fd0171c00a73d2114c2e795519ad4e;p=oweals%2Fu-boot.git mx31: Fix boot hang by avoiding vector relocation Since commit 3ff46cc42b9d73d0 ("arm: relocate the exception vectors") mx31 does not boot anymore. Add a specific relocate_vectors macro that skips the vector relocation, as the i.MX31 SoC does not provide RAM at the high vectors address (0xFFFF0000), and (0x00000000) maps to ROM. This allows mx31 to boot again. Cc: Anatolij Gustschin Cc: Magnus Lilja Signed-off-by: Fabio Estevam --- diff --git a/arch/arm/cpu/arm1136/mx31/Makefile b/arch/arm/cpu/arm1136/mx31/Makefile index 9670ed9382..dcbd57065b 100644 --- a/arch/arm/cpu/arm1136/mx31/Makefile +++ b/arch/arm/cpu/arm1136/mx31/Makefile @@ -8,3 +8,7 @@ obj-y += generic.o obj-y += timer.o obj-y += devices.o + +ifndef CONFIG_SPL_BUILD +obj-y += relocate.o +endif diff --git a/arch/arm/cpu/arm1136/mx31/relocate.S b/arch/arm/cpu/arm1136/mx31/relocate.S new file mode 100644 index 0000000000..1c556df71b --- /dev/null +++ b/arch/arm/cpu/arm1136/mx31/relocate.S @@ -0,0 +1,23 @@ +/* + * relocate - i.MX31-specific vector relocation + * + * Copyright (c) 2013 Albert ARIBAUD + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include + +/* + * The i.MX31 SoC is very specific with respect to exceptions: it + * does not provide RAM at the high vectors address (0xFFFF0000), + * thus only the low address (0x00000000) is useable; but that is + * in ROM, so let's avoid relocating the vectors. + */ + .section .text.relocate_vectors,"ax",%progbits + +ENTRY(relocate_vectors) + + bx lr + +ENDPROC(relocate_vectors)