From 5dbcaa2128c50b4625f17ab2d9a5a8e5182441ba Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Fri, 10 Oct 2014 07:49:16 -0600 Subject: [PATCH] dm: x86: Support pre-reloc malloc() Add support for this by reserving a block of memory below global_data. Signed-off-by: Simon Glass --- arch/x86/cpu/start.S | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/x86/cpu/start.S b/arch/x86/cpu/start.S index 71cab22e2a..338bab19e4 100644 --- a/arch/x86/cpu/start.S +++ b/arch/x86/cpu/start.S @@ -97,6 +97,13 @@ car_init_ret: /* Reserve space for global descriptor table */ subl $X86_GDT_SIZE, %esp +#if defined(CONFIG_SYS_MALLOC_F_LEN) + subl $CONFIG_SYS_MALLOC_F_LEN, %esp + movl %eax, %edx + addl $GD_MALLOC_BASE, %edx + movl %esp, (%edx) +#endif + /* Align temporary global descriptor table to 16-byte boundary */ andl $0xfffffff0, %esp -- 2.39.5