From 76a1e584e10d14f1981f65376636ecff80bdc19b Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Thu, 10 Jul 2014 22:23:29 -0600 Subject: [PATCH] arm: Support pre-relocation malloc() Add support for re-relocation malloc() in arm's start-up code. Signed-off-by: Simon Glass --- README | 3 +++ arch/arm/lib/crt0.S | 5 ++++- 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/README b/README index f704eb3780..31e08fc748 100644 --- a/README +++ b/README @@ -3752,6 +3752,9 @@ Configuration Settings: Pre-relocation malloc() is only supported on sandbox at present but is fairly easy to enable for other archs. + Pre-relocation malloc() is only supported on ARM at present + but is fairly easy to enable for other archs. + - CONFIG_SYS_BOOTM_LEN: Normally compressed uImages are limited to an uncompressed size of 8 MBytes. If this is not enough, diff --git a/arch/arm/lib/crt0.S b/arch/arm/lib/crt0.S index 43aa2123be..29cdad0f70 100644 --- a/arch/arm/lib/crt0.S +++ b/arch/arm/lib/crt0.S @@ -78,7 +78,10 @@ clr_gd: strlo r0, [r1] /* clear 32-bit GD word */ addlo r1, r1, #4 /* move to next */ blo clr_gd - +#if defined(CONFIG_SYS_MALLOC_F_LEN) && !defined(CONFIG_SPL_BUILD) + sub sp, sp, #CONFIG_SYS_MALLOC_F_LEN + str sp, [r9, #GD_MALLOC_BASE] +#endif /* mov r0, #0 not needed due to above code */ bl board_init_f