diff options
Diffstat (limited to 'tools/binman/etype/u_boot_spl_bss_pad.py')
| -rw-r--r-- | tools/binman/etype/u_boot_spl_bss_pad.py | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/tools/binman/etype/u_boot_spl_bss_pad.py b/tools/binman/etype/u_boot_spl_bss_pad.py index df15cd24ce..18c5596bd3 100644 --- a/tools/binman/etype/u_boot_spl_bss_pad.py +++ b/tools/binman/etype/u_boot_spl_bss_pad.py @@ -18,13 +18,16 @@ class Entry_u_boot_spl_bss_pad(Entry_blob): Properties / Entry arguments: None - This is similar to u_boot_spl except that padding is added after the SPL - binary to cover the BSS (Block Started by Symbol) region. This region holds - the various used by SPL. It is set to 0 by SPL when it starts up. If you - want to append data to the SPL image (such as a device tree file), you must - pad out the BSS region to avoid the data overlapping with U-Boot variables. - This entry is useful in that case. It automatically pads out the entry size - to cover both the code, data and BSS. + This holds the padding added after the SPL binary to cover the BSS (Block + Started by Symbol) region. This region holds the various variables used by + SPL. It is set to 0 by SPL when it starts up. If you want to append data to + the SPL image (such as a device tree file), you must pad out the BSS region + to avoid the data overlapping with U-Boot variables. This entry is useful in + that case. It automatically pads out the entry size to cover both the code, + data and BSS. + + The contents of this entry will a certain number of zero bytes, determined + by __bss_size The ELF file 'spl/u-boot-spl' must also be available for this to work, since binman uses that to look up the BSS address. |