spl: test: Add a test for spl_load_simple_fit()
As an example of an SPL test, add a new test for loading a FIT within
SPL. This runs on sandbox_spl. For this to work, the text base is adjusted
so that there is plenty of space available.
While we are here, document struct spl_load_info properly, since this is
currently ambiguous.
This test only verifies the logic path. It does not actually check that
the image is loaded correctly. It is not possible for sandbox's SPL to
actually run u-boot.img since it currently includes u-boot.bin rather than
u-boot. Further work could expand the test in that direction.
The need for this was noted at:
http://patchwork.ozlabs.org/project/uboot/patch/20201216000944.2832585-3-mr.nuke.me@gmail.com/
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/doc/arch/sandbox.rst b/doc/arch/sandbox.rst
index 60ee1e0..1ccb534 100644
--- a/doc/arch/sandbox.rst
+++ b/doc/arch/sandbox.rst
@@ -537,5 +537,7 @@
e000 CONFIG_BLOBLIST_ADDR Blob list
10000 CONFIG_MALLOC_F_ADDR Early memory allocation
f0000 CONFIG_PRE_CON_BUF_ADDR Pre-console buffer
- 100000 CONFIG_TRACE_EARLY_ADDR Early trace buffer (if enabled)
+ 100000 CONFIG_TRACE_EARLY_ADDR Early trace buffer (if enabled). Also used
+ as the SPL load buffer in spl_test_load().
+ 200000 CONFIG_SYS_TEXT_BASE Load buffer for U-Boot (sandbox_spl only)
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