diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/porting.txt | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/Documentation/porting.txt b/Documentation/porting.txt index 7cc3bc298a..5b5407031e 100644 --- a/Documentation/porting.txt +++ b/Documentation/porting.txt @@ -92,15 +92,10 @@ console_initcall(scb9328_console_init); this is SoC dependend. See Documentation/timekeeping.txt for further information. -- Adjust start.S. These files share a lot of common code, so they should be - reworked in general. On Arm you have to fix CFG_MALLOC_LEN. Most start.S - under cpu/arm* do a "sub r0, r0, #CFG_MALLOC_LEN". If you increase - the malloc space the value CFG_MALLOC_LEN does not fit into the instruction. - See cpu/arm920t/start.S how it is done. - On PowerpC there is at least the Problem that the relocation offset is - defined at compile time. It is easily possible to determine the address - U-Boot is currently starting from at runtime and thus allowing it U-Boot - to be started at any address. Look at the relocation code and replace +- Adjust start.S. On PowerpC there is at least the Problem that the relocation + offset is defined at compile time. It is easily possible to determine the + address U-Boot is currently starting from at runtime and thus allowing it + U-Boot to be started at any address. Look at the relocation code and replace TEXT_BASE with the following calculation of the runtime address: bl calc_source /* Calculate Source Address */ |