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Diffstat (limited to 'README')
| -rw-r--r-- | README | 19 |
1 files changed, 0 insertions, 19 deletions
@@ -1473,25 +1473,6 @@ Configuration Settings: boards which do not use the full malloc in SPL (which is enabled with CONFIG_SYS_SPL_MALLOC). -- CONFIG_SYS_NONCACHED_MEMORY: - Size of non-cached memory area. This area of memory will be - typically located right below the malloc() area and mapped - uncached in the MMU. This is useful for drivers that would - otherwise require a lot of explicit cache maintenance. For - some drivers it's also impossible to properly maintain the - cache. For example if the regions that need to be flushed - are not a multiple of the cache-line size, *and* padding - cannot be allocated between the regions to align them (i.e. - if the HW requires a contiguous array of regions, and the - size of each region is not cache-aligned), then a flush of - one region may result in overwriting data that hardware has - written to another region in the same cache-line. This can - happen for example in network drivers where descriptors for - buffers are typically smaller than the CPU cache-line (e.g. - 16 bytes vs. 32 or 64 bytes). - - Non-cached memory is only supported on 32-bit ARM at present. - - CONFIG_SYS_BOOTMAPSZ: Maximum size of memory mapped by the startup code of the Linux kernel; all data that must be processed by |