[PATCH v3 41/46] bootstd: Update extlinux and pxe to allow boot interruption

[Simon Glass]

It is useful to be able to inspect things before the OS is actually
booted, perhaps to check that all is well or to adjust the kernel
command-line. Implement the 'read_all()' method to allow this.

Provide a simple test to check that the images are found.

For now it is not possible to actually continue the uninterrupted boot,
without re-reading all the images.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

Changes in v3:
- Pass through the bootfile since extlinux and PXE are different

 boot/bootmeth_extlinux.c | 11 ++++++++++
 boot/bootmeth_pxe.c      | 11 ++++++++++
 boot/ext_pxe_common.c    | 29 ++++++++++++++++++++++++---
 include/extlinux.h       | 15 ++++++++++++++
 test/boot/bootflow.c     | 43 ++++++++++++++++++++++++++++++++++++++++
 5 files changed, 106 insertions(+), 3 deletions(-)

Applied to sjg/master, thanks!