Some comments for struct bloblist_hdr are a bit ambiguous. Update them to
clarify the meaning more precisely. Also document bloblist_get_stats()
properly.

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

Sometimes a blob needs to expand, e.g. because it needs to hold more log
data. Add support for this. Note that the bloblist must have sufficient
spare space for this to work.

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

Simon Glass authored 4 years ago and Tom Rini committed 4 years ago

Typically in TPL/SPL the bloblist is quite small. But U-Boot proper may
want to add a lot more to it, such as ACPI tables.

Add a way to expand the bloblist by relocating it in U-Boot proper, along
with the other relocation activities.

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

Simon Glass authored 4 years ago and Bin Meng committed 4 years ago

At present all tables are placed starting at address f0000 in memory, and
can be up to 64KB in size. If the tables are very large, this may not
provide enough space.

Also if the tables point to other tables (such as console log or a ramoops
area) then we must allocate other memory anyway.

The bloblist is a nice place to put these tables since it is contiguous,
which makes it easy to reserve this memory for linux using the 820 tables.

Add an option to put some of the tables in the bloblist. For SMBIOS and
ACPI, create suitable pointers from the f0000 region to the new location
of the tables.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
[bmeng: squashed in http://patchwork.ozlabs.org/project/uboot/patch/


 20201105062407.1.I8091ad931cbbb5e3b6f6ababdf3f8d5db0d17bb9@changeid/]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

Adjust a few comments to make the meaning clearer.

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

Some blobs need a larger alignment than the default. For example, ACPI
tables often start at a 4KB boundary. Add support for this.

Update the size of the test blob to allow these larger records.

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

It is helpful to be able to see basic statistics about the bloblist and
also to list its contents. Add a 'bloblist' command to handle this.

Put the display functions in the bloblist modules rather than in the
command code itself. That allows showing a list from SPL, where commands
are not available.

Also make bloblist_first/next_blob() static as they are not used outside
this file.

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

Simon Glass authored 4 years ago and Bin Meng committed 4 years ago

This provides information about a v1 TPM in the system. Generate this
table if the TPM is present.

Add a required new bloblist type and correct the header order of one
header file.

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

Simon Glass authored 4 years ago and Bin Meng committed 4 years ago

This provides information about a v2 TPM in the system. Generate this
table if the TPM is present.

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

Simon Glass authored 4 years ago and Bin Meng committed 4 years ago

This table is needed by the Linux graphics driver to handle graphics
correctly. Write it to ACPI.

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

Simon Glass authored 4 years ago and Bin Meng committed 4 years ago

This device has a large set of ACPI tables. Bring these in from coreboot
so that full functionality is available (apart from SMI).

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

Add a messing error code to bloblist_new() and tidy up the line length in
bloblist_addrec().

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

A common check is to see if a blob is present, create it if not and make
sure that the size is large enough. Add a function to handle this.

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

Simon Glass authored 6 years ago and Tom Rini committed 6 years ago

At present there is no standard way in U-Boot to pass information from SPL
to U-Boot proper. But sometimes SPL wants to convey information to U-Boot
that U-Boot cannot easily figure out. For example, if SPL sets up SDRAM
then it might want to pass the size of SDRAM, or the location of each
bank, to U-Boot proper.

Add a new 'bloblist' feature which provides this. A bloblist is set up in
the first phase of U-Boot that runs (i.e. TPL or SPL). The location of
this info may be in SRAM or CAR (x86 cache-as-RAM) or somewhere else.

Information placed in this region is preserved (with a checksum) through
TPL and SPL and ends up in U-Boot. At this point it is copied into SDRAM
so it can be used after relocation.

Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Andreas Dannenberg <dannenberg@ti.com>