board_f.c: Ensure 16 alignment of start_addr_sp and reserved memory
Add a function reserve_stack_aligned() to reserved memory with 16 bits alignment after the stack pointer (gd->start_addr_sp) and use this new function in board_f.c to reserve all the memory area (malloc, board, gd, fdt, bootstage, stacks). This 16 byte alignment is needed for cast on struct pointer for the reserved memory, for example: + x86_64 ABI: https://reviews.llvm.org/D30049: 16 bytes + ARMv8 Instruction Set Overview: quad word, 16 bytes An other alignment value could be needed for other architecture. Signed-off-by: NPatrick Delaunay <patrick.delaunay@st.com> Acked-by: NStephen Warren <swarren@nvidia.com>
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