This patch makes sure the C runtime environment is properly
initialised before executing any C code.
- Zero-initialise NOBITS sections (e.g. the bss section).
- Relocate BL1 data from ROM to RAM.
Change-Id: I0da81b417b2f0d1f7ef667cc5131b1e47e22571f
- Check at link-time that bootloader images will fit in memory
at run time and that they won't overlap each other.
- Remove text and rodata orphan sections.
- Define new linker symbols to remove the need for platform setup
code to know the order of sections.
- Reduce the size of the raw binary images by cutting some sections
out of the disk image and allocating them at load time, whenever
possible.
- Rework alignment constraints on sections.
- Remove unused linker symbols.
- Homogenize linker symbols names across all BLs.
- Add some comments in the linker scripts.
Change-Id: I47a328af0ccc7c8ab47fcc0dc6e7dd26160610b9
On FVP platforms, for now it is assumed that the normal-world
bootloader is already sitting in its final memory location.
Therefore, BL2 doesn't need to load it and so it doesn't need
to know the extents of the non-trusted DRAM.
Change-Id: I33177ab43ca242edc8958f2fa8d994e7cf3e0843
Also, don't invalidate the TLBs in disable_mmu() function, it's better
to do it in enable_mmu() function just before actually enabling the
MMU.
Change-Id: Ib32d6660019b0b2c17254156aad4be67ab4970e1
Global and static variables are expected to be initialised to zero
by default. This is specified by the C99 standard. This patch
removes some unnecessary initialisations of such variables.
It fixes a compilation warning at the same time:
plat/fvp/bl31_plat_setup.c:82:3: warning: missing braces around
initializer [-Wmissing-braces]
section("tzfw_coherent_mem"))) = {0};
^
plat/fvp/bl31_plat_setup.c:82:3: warning: (near initialization for
‘ns_entry_info[0]’) [-Wmissing-braces]
Note that GCC should not have emitted this warning message in the
first place. The C Standard permits braces to be elided around
subaggregate initializers. See this GCC bug report:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53119
Change-Id: I13cb0c344feb9803bca8819f976377741fa6bc35
blx_plat_arch_setup() should only perform platform-specific
architectural setup, e.g. enabling the MMU. This patch moves
generic architectural setup code out of blx_plat_arch_setup().
Change-Id: I4ccf56b8c4a2fa84909817779a2d97a14aaafab6
Sandrine Bailleux
Harry Liebel
Achin Gupta