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bloblist: kconfig for mandatory incoming standard passage

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In previous commit, incoming standard passage is used by default
when initializing the bloblist, so explicitly BLOBLIST_PASSAGE is
no more needed.
Rename it as BLOBLIST_PASSAGE_MANDATORY to determine the behaviors
when an incoming transfer list does not exist or is invalid.
When it is selected, incoming standard passage is mandatory and
U-Boot will report an error when a valid incoming transfer list is
missing.

Signed-off-by: Raymond Mao <raymond.mao@linaro.org>
This commit is contained in:
Raymond Mao 2025-02-12 08:55:20 -08:00
parent 7bb12a9bb9
commit d6e9f13a41
5 changed files with 21 additions and 11 deletions
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14
common/Kconfig
View file

@ -1066,11 +1066,15 @@ config BLOBLIST_ALLOC
specify a fixed address on systems where this is unknown or can
change at runtime.
config BLOBLIST_PASSAGE
bool "Use bloblist in-place"
config BLOBLIST_PASSAGE_MANDATORY
bool "Use bloblist in-place mandatorily"
help
Use a bloblist in the incoming standard passage. The size is detected
automatically so CONFIG_BLOBLIST_SIZE can be 0.
By default U-Boot will use a bloblist in the incoming standard passage.
This option controls whether U-Boot tries to load a static bloblist or
allocate one if a valid incoming bloblist does not exist.
Select this option to mark incoming standard passage as mandatory and
U-Boot will report an error when a valid incoming bloblist does not
exist.
endchoice
@ -1086,7 +1090,7 @@ config BLOBLIST_ADDR
config BLOBLIST_SIZE
hex "Size of bloblist"
default 0x0 if BLOBLIST_PASSAGE
default 0x0 if BLOBLIST_PASSAGE_MANDATORY
default 0x400
help
Sets the size of the bloblist in bytes. This must include all

7
common/bloblist.c
View file

@ -526,6 +526,13 @@ int bloblist_init(void)
*/
bool from_addr = fixed && !xpl_is_first_phase();
/*
* If Firmware Handoff is mandatory but no transfer list is
* observed, report it as an error.
*/
if (IS_ENABLED(CONFIG_BLOBLIST_PASSAGE_MANDATORY))
return -ENOENT;
ret = -ENOENT;
if (xpl_prev_phase() == PHASE_TPL &&

2
configs/vexpress_fvp_bloblist_defconfig
View file

@ -1,5 +1,5 @@
#include <configs/vexpress_fvp_defconfig>
CONFIG_BLOBLIST=y
CONFIG_BLOBLIST_PASSAGE=y
CONFIG_BLOBLIST_PASSAGE_MANDATORY=y
CONFIG_BLOBLIST_SIZE_RELOC=0x10000

4
doc/board/armltd/vexpress64.rst
View file

@ -53,8 +53,8 @@ predefined bloblist at a specified address, dynamically allocating memory for a
bloblist, or utilizing a standard passage-provided bloblist with automatic size
detection.
By default, ``vexpress_fvp_bloblist_defconfig`` uses the standard passage method
(CONFIG_BLOBLIST_PASSAGE) because TF-A provides a Transfer List in non-secure
By default, ``vexpress_fvp_bloblist_defconfig`` uses the standard passage method mandatorily
(CONFIG_BLOBLIST_PASSAGE_MANDATORY) because TF-A provides a Transfer List in non-secure
memory that U-Boot can utilise. This Bloblist, which is referred to as a Transfer List in
TF-A, contains all necessary data for the handoff process, including DT and ACPI
tables.

5
include/bloblist.h
View file

@ -467,9 +467,8 @@ int bloblist_reloc(void *to, uint to_size);
* If CONFIG_BLOBLIST_ALLOC is selected, it allocates memory for a bloblist of
* size CONFIG_BLOBLIST_SIZE.
*
* If CONFIG_BLOBLIST_PASSAGE is selected, it uses the bloblist in the incoming
* standard passage. The size is detected automatically so CONFIG_BLOBLIST_SIZE
* can be 0.
* If CONFIG_BLOBLIST_PASSAGE_MANDATORY is selected, bloblist in the incoming
* standard passage is mandatorily required.
*
* Sets GD_FLG_BLOBLIST_READY in global_data flags on success
*