[PATCH v3 46/46] bootmeth_extlinux: Refactor extlinux to split boot

[Simon Glass]

Add a new extlinux_setup() function which sets things up so that the
bootflow can either be booted, or just probed.

Provide a readall() method so that images can be read into memory,
without booting the OS. Adjust the boot() method so that it can boot,
after any changes have been made by the user.

Update the test to change the bootargs and check that they are booted
with the changes intact.

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

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

 boot/ext_pxe_common.c | 53 +++++++++++++++++++++++++++----------------
 test/boot/bootflow.c  | 24 ++++++++++++++++++++
 2 files changed, 58 insertions(+), 19 deletions(-)

Applied to sjg/master, thanks!