From b13201fd362ff1dca9719d2f6ff1c8527b3074f6 Mon Sep 17 00:00:00 2001 From: patacongo Date: Wed, 11 Apr 2012 14:47:25 +0000 Subject: Fix CDC/ACM alternate interface number (from Antti) git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4589 42af7a65-404d-4744-a932-0658087f49c3 --- nuttx/mm/Kconfig | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'nuttx/mm/Kconfig') diff --git a/nuttx/mm/Kconfig b/nuttx/mm/Kconfig index ae2bf3130..000217dc5 100644 --- a/nuttx/mm/Kconfig +++ b/nuttx/mm/Kconfig @@ -2,3 +2,25 @@ # For a description of the syntax of this configuration file, # see misc/tools/kconfig-language.txt. # + +config MM_REGIONS + int "Number of memory regions" + default 1 + ---help--- + If the architecture includes multiple, non-contiguous regions of + memory to allocate from, this specifies the number of memory regions + that the memory manager must handle and enables the API + mm_addregion(start, end); + +config MM_SMALL + bool "Small memory model" + default n + ---help--- + Each memory allocation has a small allocation overhead. The size + of that overhead is normally determined by the "width" of the + address support by the MCU. MCUs that support 16-bit addressability + have smaller overhead than devices that support 32-bit addressability. + However, there are many MCUs that support 32-bit addressability *but* + have internal SRAM of size less than or equal to 64Kb. In this case, + CONFIG_MM_SMALL can be defined so that those MCUs will also benefit + from the smaller, 16-bit-based allocation overhead. -- cgit v1.2.3