From d8bd820935bb9b8bf2717a259eeab4376e9ccc9a Mon Sep 17 00:00:00 2001 From: Tom Warren Date: Fri, 17 Feb 2012 06:01:21 +0000 Subject: [PATCH] arm: Tegra2: Fix ELDK42 gcc failure with inline asm stack pointer load The 4.2.2 gcc in the ELDK42 release doesn't like the direct SP load using a constant in tegra2_start. Change it to use a load thru another reg using mov sp, %0 : : "r"(CONST). Tested on my Seaboard T20-A03, U-Boot loads and runs OK. Also compiled all tegra2 builds with both gcc 4.2.2 and 4.4.1 OK. Signed-off-by: Tom Warren Acked-by: Simon Glass Tested-by: Simon Glass --- arch/arm/cpu/armv7/tegra2/ap20.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/arm/cpu/armv7/tegra2/ap20.c b/arch/arm/cpu/armv7/tegra2/ap20.c index 4c44bb3637..f0450f4c01 100644 --- a/arch/arm/cpu/armv7/tegra2/ap20.c +++ b/arch/arm/cpu/armv7/tegra2/ap20.c @@ -298,11 +298,11 @@ void tegra2_start(void) writel(0xC0, &pmt->pmt_cfg_ctl); /* - * If we are ARM7 - give it a different stack. We are about to - * start up the A9 which will want to use this one. - */ - asm volatile("ldr sp, =%c0\n" - : : "i"(AVP_EARLY_BOOT_STACK_LIMIT)); + * If we are ARM7 - give it a different stack. We are about to + * start up the A9 which will want to use this one. + */ + asm volatile("mov sp, %0\n" + : : "r"(AVP_EARLY_BOOT_STACK_LIMIT)); start_cpu((u32)_start); halt_avp();