This converts the following to Kconfig:
   CONFIG_SYS_MONITOR_LEN

To do this, we set a default of 0 for everyone because there are a
number of cases where we define CONFIG_SYS_MONITOR_LEN but the only
impact is that we set TOTAL_MALLOC_LEN to be CONFIG_SYS_MALLOC_LEN +
CONFIG_ENV_SIZE, so we must continue to allow all boards to set this
value. Update the SPL code to use 200 KB as the default raw U-Boot size
directly, if we don't have a real CONFIG_SYS_MONITOR_LEN value.

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

At present we only support a single loader of each time. Extra ones are
ignored. This means that only one BOOT_DEVICE_BOARD can be used in the SPL
image.

This is inconvenient since we sometimes want to provide several
board-specific drivers, albeit at different priorties. Add support for
this.

This should have no functional change for existing boards.

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

Add an option to allow silent console to be controlled separately in SPL,
so that boot progress can be shown. Disable it by default for sandbox
since it is useful to see what is going on there.

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

The expression in boot_from_devices() is fairly long and appears to be an
artefact from before we could easily call printf(...) and have the call be
nop'd out. So update it to just check CONFIG_SILENT_CONSOLE.

Signed-off-by: Simon Glass <sjg@chromium.org>
Suggested-by: Tom Rini <trini@konsulko.com>

At present we use symbols for the u-boot-spl entry, but this is not always
what we want. For example, sandbox actually jumps to a u-boot-spl-elf
entry, since sandbox executables are ELF files.

We already handle this with U-Boot by using the '-any' suffix. Add it for
SPL as well.

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

The current name is inconsistent with SPL which uses CONFIG_SPL_TEXT_BASE
and this makes it imposible to use CONFIG_VAL().

Rename it to resolve this problem.

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

This is not needed and we should avoid typedefs. Use the struct instead
and rename it to indicate that it really is a legacy struct.

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

This is not needed and we should avoid typedefs. Use the struct instead.

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

This is required for architectures which do not support compressed kernel images (i.e. ARM64).  This is only used while not booting via FIT image.

Signed-off-by: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
Cc: Tom Rini <trini@konsulko.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

Binman lets us declare symbols in SPL/TPL that refer to other entries in
the same binman image as them. These symbols are filled in with the
correct values while binman assembles the images, but this is done
in-memory only. Symbols marked as optional can be filled with
BINMAN_SYM_MISSING as an error value if their referred entry is missing.

However, the unmodified SPL/TPL binaries are still available on disk,
and can be used by people. For these files, nothing ensures that the
symbols are set to this error value, and they will be considered valid
when they are not.

Empirically, all symbols show up as zero in a sandbox_vpl build when we
run e.g. tpl/u-boot-tpl directly. On the other hand, zero is a perfectly
fine value for a binman-written symbol, so we cannot say the symbols
have wrong values based on that.

Declare a magic symbol that binman always fills in with a fixed value.
Check this value as an indicator that symbols were filled in correctly.
Return the error value for all symbols when this magic symbol has the
wrong value.

For binman tests, we need to make room for the new symbol in the mocked
SPL/TPL data by extending them by four bytes. This messes up some test
image layouts. Fix the affected values, and check the magic symbol
wherever it makes sense.

Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>