diff options
Diffstat (limited to 'tools/binman/etype/x86_start16.py')
-rw-r--r-- | tools/binman/etype/x86_start16.py | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/tools/binman/etype/x86_start16.py b/tools/binman/etype/x86_start16.py index 23d27f07040..7d32ecd321b 100644 --- a/tools/binman/etype/x86_start16.py +++ b/tools/binman/etype/x86_start16.py @@ -9,6 +9,20 @@ from entry import Entry from blob import Entry_blob class Entry_x86_start16(Entry_blob): + """x86 16-bit start-up code for U-Boot + + Properties / Entry arguments: + - filename: Filename of u-boot-x86-16bit.bin (default + 'u-boot-x86-16bit.bin') + + x86 CPUs start up in 16-bit mode, even if they are 32-bit CPUs. This code + must be placed at a particular address. This entry holds that code. It is + typically placed at offset CONFIG_SYS_X86_START16. The code is responsible + for changing to 32-bit mode and jumping to U-Boot's entry point, which + requires 32-bit mode (for 32-bit U-Boot). + + For 64-bit U-Boot, the 'x86_start16_spl' entry type is used instead. + """ def __init__(self, section, etype, node): Entry_blob.__init__(self, section, etype, node) |