The M.2 slots of the related IOT2050 variant need to be configured
according to the plugged cards. This tries to detect the card using the
M.2 configuration pins of the B-key slot. If that fails, a U-Boot
environment variable can be set to configure manually. This variable is
write-permitted also in secure boot mode as it is not able to undermine
the integrity of the booted system.
The configuration is then applied to mux the serdes and to fix up the
device tree passed to or loaded by the bootloader. The fix-ups are
coming from device tree overlays that are embedded into the firmware
image and there also integrity protected. The OS remains free to load
a device tree to which they do not apply: U-Boot will not fail to boot
in that case.
Based on original patch by Chao Zeng.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Will be needed when CONFIG_ENV_WRITEABLE_LIST is enabled. The listed
variables shall remain writable, for informational purposes - they have
to be considered untrusted because the persistent U-Boot env is not
protected.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Anything that is not boot-env related is better kept there by now.
At this chance, also drop a stale comment from iot2050.h
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
This converts 8 usages of this option to the non-SPL form, since there is
no SPL_CMD_USB defined in Kconfig
Signed-off-by: Simon Glass <sjg@chromium.org>
This converts the following to Kconfig:
CONFIG_SYS_BOOTM_LEN
As part of this, rework error handling in boot/bootm.c so that we pass
the buffer size to handle_decomp_error as CONFIG_SYS_BOOTM_LEN will not
be available to host tools but we do know the size that we passed to
malloc().
Cc: Soeren Moch <smoch@web.de>
Signed-off-by: Tom Rini <trini@konsulko.com>
With the exception of how PowerPC handles SPL and TPL (which has its own
issues), we cannot safely hide options under CONFIG_SPL_BUILD. Largely
remove the places that have this test today.
Signed-off-by: Tom Rini <trini@konsulko.com>
- Make all users of CUSTOM_SYS_INIT_SP_ADDR reference SYS_INIT_SP_ADDR
- Introduce HAS_CUSTOM_SYS_INIT_SP_ADDR to allow for setting the stack
pointer directly, otherwise we use the common calculation.
- On some platforms that were using the standard calculation but did not
set CONFIG_SYS_INIT_RAM_SIZE / CONFIG_SYS_INIT_RAM_ADDR, set them.
- On a small number of platforms that were not subtracting
GENERATED_GBL_DATA_SIZE do so now via the standard calculation.
- CONFIG_SYS_INIT_SP_OFFSET is now widely unused, so remove it from most
board config header files.
Signed-off-by: Tom Rini <trini@konsulko.com>
This converts the following to Kconfig:
CONFIG_SPL_PAD_TO
CONFIG_SPL_MAX_SIZE
CONFIG_TPL_PAD_TO
CONFIG_TPL_MAX_SIZE
Note that we need to make TPL_MAX_SIZE be hex, and so move and convert the
existing places.
Signed-off-by: Tom Rini <trini@konsulko.com>
Account for the changes done between merge proposal and the final merge.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This adds support for the IOT2050 Basic and Advanced devices. The Basic
used the dual-core AM6528 GP processor, the Advanced one the AM6548 HS
quad-core version.
Both variants are booted via a Siemens-provided FSBL that runs on the R5
cores. Consequently, U-Boot support is targeting the A53 cores. U-Boot
SPL, ATF and TEE have to reside in SPI flash.
Full integration into a bootable image can be found on
https://github.com/siemens/meta-iot2050
Based on original board support by Le Jin, Gao Nian and Chao Zeng.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
