Add support for this by reserving a block of memory below global_data.

Signed-off-by: Simon Glass <s...@chromium.org>
---

 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 71cab22..338bab1 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
 
-- 
2.1.0.rc2.206.gedb03e5

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