Fuchsia Firmware SDK

We attempt to bring the Fuchsa Firmware SDK in with as few modifications as possible, but at the moment there are a few small changes that are necessary.

Standard library includes are a bit tricky, for example stdint.h. We can‘t include stdint.h directly because it uses the toolchain’s built-in mplementation which conflicts with u-boot's custom common.h definitions.

However, we also can't create a fake stdint.h that just redirects to common.h because the scp_task sub-build does use the built-in stdint.h, so replacing it breaks that build.

The current approach is just to modify the SDK files directly as needed to point to u-boot's custom headers instead of the standard library ones.

libabr

• sysdeps.h:
  • Undefine LIBABR_USE_STDLIB_DEPS
  • Adjust include files
• util.h:
  • Add <common.h> include
• util.c:
  • Add <util.h> include
• data.h:
  • change static const char* kAbrMagic = "\0AB0"; to #define kAbrMagic "\0AB0"

libavb

• avb_atx_validate.h
  • Set AVB_ATX_PIK_VERSION_LOCATION to 29
  • Set AVB_ATX_PSK_VERSION_LOCATION to 28
• avb_cmdline.c
  • Initialize verity_mode and dm_verity_mode to NULL
• avb_sha.h
  • replace software SHA256 with accelerated HW implementation
• avb_slot_verify.h
  • Set AVB_MAX_NUMBER_OF_ROLLBACK_INDEX_LOCATIONS to 28
• avb_slot_verify.c
  • Initialize ret in avb_slot_verify()
• avb_sysdeps.h
  • Replace standard library includes

libzbi

• zbi.c:
  • Replace <string.h> include

sysroot

• zircon/boot/bootfs.h:
  • Replace <stdint.h> include
• zircon/boot/image.h:
  • Replace <stdint.h> include
• zircon/boot/dirver-config.h:
  • Replace <stdint.h> include
  • Replace <zircon/types.h> include with zx_duration_t typedef