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Diffstat (limited to 'README')
| -rw-r--r-- | README | 21 |
1 files changed, 0 insertions, 21 deletions
@@ -1876,27 +1876,6 @@ Configuration Settings: the RAM base is not zero, or RAM is divided into banks, this variable needs to be recalcuated to get the address. -- CONFIG_SYS_MEM_TOP_HIDE: - If CONFIG_SYS_MEM_TOP_HIDE is defined in the board config header, - this specified memory area will get subtracted from the top - (end) of RAM and won't get "touched" at all by U-Boot. By - fixing up gd->ram_size the Linux kernel should gets passed - the now "corrected" memory size and won't touch it either. - This should work for arch/ppc and arch/powerpc. Only Linux - board ports in arch/powerpc with bootwrapper support that - recalculate the memory size from the SDRAM controller setup - will have to get fixed in Linux additionally. - - This option can be used as a workaround for the 440EPx/GRx - CHIP 11 errata where the last 256 bytes in SDRAM shouldn't - be touched. - - WARNING: Please make sure that this value is a multiple of - the Linux page size (normally 4k). If this is not the case, - then the end address of the Linux memory will be located at a - non page size aligned address and this could cause major - problems. - - CONFIG_SYS_LOADS_BAUD_CHANGE: Enable temporary baudrate change while serial download |