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| author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2013-03-23 14:46:02 +0000 |
|---|---|---|
| committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2013-03-23 14:46:02 +0000 |
| commit | a8cb02138ce460fbd66d242d34dda71082062538 (patch) | |
| tree | 85f69dab32369af97249168fb8eb32b976ceeb40 /nuttx/configs/sam3u-ek/scripts | |
| parent | f4a74d79f3111b79f408eb4070e125cad78e9082 (diff) | |
| download | px4-nuttx-a8cb02138ce460fbd66d242d34dda71082062538.tar.gz px4-nuttx-a8cb02138ce460fbd66d242d34dda71082062538.tar.bz2 px4-nuttx-a8cb02138ce460fbd66d242d34dda71082062538.zip | |
Rework of kernel build signal dispatch to user-space handlers
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5778 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/configs/sam3u-ek/scripts')
| -rw-r--r-- | nuttx/configs/sam3u-ek/scripts/memory.ld | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/nuttx/configs/sam3u-ek/scripts/memory.ld b/nuttx/configs/sam3u-ek/scripts/memory.ld index 13405f408..43fca9478 100644 --- a/nuttx/configs/sam3u-ek/scripts/memory.ld +++ b/nuttx/configs/sam3u-ek/scripts/memory.ld @@ -51,11 +51,15 @@ * requirement also increases. * * This alignment requirement means that the largest user space FLASH region - * you can have will be 2128KB at it would have to be positioned at - * 0x000a0000. If you change this address, don't forget to chagne the + * you can have will be 128KB at it would have to be positioned at + * 0x000a0000. If you change this address, don't forget to change the * CONFIG_NUTTX_USERSPACE configuration setting to match and to modify * the check in kernel/userspace.c. * + * For the same reasons, the maximum size of the SRAM mapping is limited to + * 4KB. Both of these alignment limitations could be reduced by using + * multiple regions to map the FLASH/SDRAM range. + * * A detailed memory map for the 16Kb SRAM region is as follows: * * 0x20000 0000: Kernel .data region. Typical size: 0.1KB @@ -77,12 +81,14 @@ MEMORY /* 256Kb FLASH */ kflash (rx) : ORIGIN = 0x00080000, LENGTH = 64K - uflash (rx) : ORIGIN = 0x00090000, LENGTH = 192K + uflash (rx) : ORIGIN = 0x00090000, LENGTH = 64K + xflash (rx) : ORIGIN = 0x000a0000, LENGTH = 128K /* 32Kb SRAM */ ksram1 (rwx) : ORIGIN = 0x20000000, LENGTH = 4K - usram1 (rwx) : ORIGIN = 0x20001000, LENGTH = 28K + usram1 (rwx) : ORIGIN = 0x20001000, LENGTH = 4K + xsram1 (rwx) : ORIGIN = 0x20001000, LENGTH = 24K /* 16Kb SRAM */ |