From: Fabio Estevam Date: Tue, 6 Jan 2015 15:06:48 +0000 (-0200) Subject: mx25: Fix boot hang by avoiding vector relocation X-Git-Tag: KARO-TXA5-2015-06-26~55 X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-uboot.git;a=commitdiff_plain;h=906d6fe3033910a5eca72ef6fc9b47a957b113e5 mx25: Fix boot hang by avoiding vector relocation Since commit 3ff46cc42b9d73d0 ("arm: relocate the exception vectors") mx25pdk hangs like this: CPU: Freescale i.MX25 rev1.2 at 399 MHz Reset cause: WDOG Board: MX25PDK I2C: ready DRAM: 64 MiB (hangs) Add a specific relocate_vectors macro that skips the vector relocation, as the i.MX25 SoC does not provide RAM at the high vectors address (0xFFFF0000), and (0x00000000) maps to ROM. This allows mx25 to boot again. Acked-By: Bill Pringlemeir Signed-off-by: Fabio Estevam --- diff --git a/arch/arm/cpu/arm926ejs/mx25/Makefile b/arch/arm/cpu/arm926ejs/mx25/Makefile index 134c69d42d..ebc0407ef4 100644 --- a/arch/arm/cpu/arm926ejs/mx25/Makefile +++ b/arch/arm/cpu/arm926ejs/mx25/Makefile @@ -5,3 +5,7 @@ # SPDX-License-Identifier: GPL-2.0+ obj-y = generic.o timer.o reset.o + +ifndef CONFIG_SPL_BUILD +obj-y += relocate.o +endif diff --git a/arch/arm/cpu/arm926ejs/mx25/relocate.S b/arch/arm/cpu/arm926ejs/mx25/relocate.S new file mode 100644 index 0000000000..8ebb81fc40 --- /dev/null +++ b/arch/arm/cpu/arm926ejs/mx25/relocate.S @@ -0,0 +1,23 @@ +/* + * relocate - i.MX25-specific vector relocation + * + * Copyright (c) 2013 Albert ARIBAUD + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include + +/* + * The i.MX25 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)