diff options
| author | Simon Glass <sjg@chromium.org> | 2018-11-15 18:43:50 -0700 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2018-11-26 08:25:32 -0500 |
| commit | 9f407d4ef092c2ce7ab0f4f366aee252611dab3c (patch) | |
| tree | 56908d01e8b0b24d77d1b77789f34f5b80b353f5 /common/Kconfig | |
| parent | 4d8d3056f885b518c0d1d0b5a793d9bf4b579496 (diff) | |
| download | u-boot-9f407d4ef092c2ce7ab0f4f366aee252611dab3c.tar.gz | |
Add core support for a bloblist to convey data from SPL
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>
Diffstat (limited to 'common/Kconfig')
| -rw-r--r-- | common/Kconfig | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/common/Kconfig b/common/Kconfig index 68e4ddfb4a..57bd16d962 100644 --- a/common/Kconfig +++ b/common/Kconfig @@ -750,4 +750,52 @@ config UPDATE_TFTP_MSEC_MAX endmenu +menu "Blob list" + +config BLOBLIST + bool "Support for a bloblist" + help + This enables support for a bloblist in U-Boot, which can be passed + from TPL to SPL to U-Boot proper (and potentially to Linux). The + blob list supports multiple binary blobs of data, each with a tag, + so that different U-Boot components can store data which can survive + through to the next stage of the boot. + +config SPL_BLOBLIST + bool "Support for a bloblist in SPL" + depends on BLOBLIST + default y if SPL + help + This enables a bloblist in SPL. If this is the first part of U-Boot + to run, then the bloblist is set up in SPL and passed to U-Boot + proper. If TPL also has a bloblist, then SPL uses the one from there. + +config TPL_BLOBLIST + bool "Support for a bloblist in TPL" + depends on BLOBLIST + default y if TPL + help + This enables a bloblist in TPL. The bloblist is set up in TPL and + passed to SPL and U-Boot proper. + +config BLOBLIST_SIZE + hex "Size of bloblist" + depends on BLOBLIST + default 0x400 + help + Sets the size of the bloblist in bytes. This must include all + overhead (alignment, bloblist header, record header). The bloblist + is set up in the first part of U-Boot to run (TPL, SPL or U-Boot + proper), and this sane bloblist is used for subsequent stages. + +config BLOBLIST_ADDR + hex "Address of bloblist" + depends on BLOBLIST + default 0xe000 if SANDBOX + help + Sets the address of the bloblist, set up by the first part of U-Boot + which runs. Subsequent U-Boot stages typically use the same address. + +endmenu + source "common/spl/Kconfig" |