diff options
| author | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2015-02-24 07:59:38 +0100 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2015-02-24 07:59:38 +0100 |
| commit | e1cc4d31f889428a4ca73120951389c756404184 (patch) | |
| tree | 4a2028c750e19f5d36d0aa7545bda7cbacea9dd4 /arch/arm/lib | |
| parent | 23d184d2fbc805bdd9fb41f2370cdce04a7894af (diff) | |
| parent | 38dac81b3d0e777f301ca98100bfbcab01d616c2 (diff) | |
| download | u-boot-imx-e1cc4d31f889428a4ca73120951389c756404184.zip u-boot-imx-e1cc4d31f889428a4ca73120951389c756404184.tar.gz u-boot-imx-e1cc4d31f889428a4ca73120951389c756404184.tar.bz2 | |
Merge remote-tracking branch 'u-boot/master' into 'u-boot-arm/master'
Diffstat (limited to 'arch/arm/lib')
| -rw-r--r-- | arch/arm/lib/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/lib/stack.c | 42 |
2 files changed, 43 insertions, 0 deletions
diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile index d74e4b8..da8ed72 100644 --- a/arch/arm/lib/Makefile +++ b/arch/arm/lib/Makefile @@ -35,6 +35,7 @@ endif obj-$(CONFIG_SEMIHOSTING) += semihosting.o obj-y += sections.o +obj-y += stack.o ifdef CONFIG_ARM64 obj-y += gic_64.o obj-y += interrupts_64.o diff --git a/arch/arm/lib/stack.c b/arch/arm/lib/stack.c new file mode 100644 index 0000000..cf10a53 --- /dev/null +++ b/arch/arm/lib/stack.c @@ -0,0 +1,42 @@ +/* + * Copyright (c) 2015 Andreas Bießmann <andreas.devel@googlemail.com> + * + * Copyright (c) 2011 The Chromium OS Authors. + * (C) Copyright 2002-2006 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Marius Groeger <mgroeger@sysgo.de> + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include <common.h> + +DECLARE_GLOBAL_DATA_PTR; + +int arch_reserve_stacks(void) +{ +#ifdef CONFIG_SPL_BUILD + gd->start_addr_sp -= 128; /* leave 32 words for abort-stack */ + gd->irq_sp = gd->start_addr_sp; +#else + /* setup stack pointer for exceptions */ + gd->irq_sp = gd->start_addr_sp; + +# if !defined(CONFIG_ARM64) +# ifdef CONFIG_USE_IRQ + gd->start_addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ); + debug("Reserving %zu Bytes for IRQ stack at: %08lx\n", + CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ, gd->start_addr_sp); + + /* 8-byte alignment for ARM ABI compliance */ + gd->start_addr_sp &= ~0x07; +# endif + /* leave 3 words for abort-stack, plus 1 for alignment */ + gd->start_addr_sp -= 16; +# endif +#endif + + return 0; +} |