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 | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/tools/binman/etype/u_boot_spl_bss_pad.py b/tools/binman/etype/u_boot_spl_bss_pad.py index 65f631d3c5e..00b7ac50040 100644 --- a/tools/binman/etype/u_boot_spl_bss_pad.py +++ b/tools/binman/etype/u_boot_spl_bss_pad.py @@ -14,6 +14,22 @@ from blob import Entry_blob import tools class Entry_u_boot_spl_bss_pad(Entry_blob): + """U-Boot SPL binary padded with a BSS region + + 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. + + 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. + """ def __init__(self, section, etype, node): Entry_blob.__init__(self, section, etype, node) |