From fbd72824263dfb48bfee999f8b92ba9cc8abac1b Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Fri, 10 Oct 2014 07:49:15 -0600 Subject: dm: x86: Zero global data before board_init_f() To permit information to be passed from the early U-Boot code to board_init_f() we cannot zero the global_data in board_init_f(). Instead zero it in the start-up code. Signed-off-by: Simon Glass --- arch/x86/cpu/start.S | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'arch/x86') diff --git a/arch/x86/cpu/start.S b/arch/x86/cpu/start.S index 329bb3a..71cab22 100644 --- a/arch/x86/cpu/start.S +++ b/arch/x86/cpu/start.S @@ -85,6 +85,12 @@ car_init_ret: /* Align global data to 16-byte boundary */ andl $0xfffffff0, %esp + /* Zero the global data since it won't happen later */ + xorl %eax, %eax + movl $GENERATED_GBL_DATA_SIZE, %ecx + movl %esp, %edi + rep stosb + /* Setup first parameter to setup_gdt */ movl %esp, %eax -- cgit v1.1