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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-10-02 19:20:43 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-10-02 19:20:43 -0400 |
| commit | a037a79dceaf717409fbf42f4ad209b9c15f435c (patch) | |
| tree | c30b5b033c74ab9470e875554bded16464bbdf9b /Documentation | |
| parent | 90d5ffc729e92bffc0f84e2447e2e6dc280240a5 (diff) | |
| parent | d25ef8b86e6a58f5476bf6e4a8da730b335f68fa (diff) | |
Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm: (25 commits)
ARM: 5728/1: Proper prefetch abort handling on ARMv6 and ARMv7
ARM: 5727/1: Pass IFSR register to do_PrefetchAbort()
ARM: 5740/1: fix valid_phys_addr_range() range check
ARM: 5739/1: ARM: allow empty ATAG_CORE
ARM: 5735/1: sa1111: CodingStyle cleanups
ARM: 5738/1: Correct TCM documentation
ARM: 5734/1: arm: fix compilation of entry-common.S for older CPUs
ARM: 5733/1: fix bcmring compile error
ARM: 5732/1: remove redundant include file
ARM: 5731/2: Fix U300 generic GPIO, remove ifdefs from MMCI v3
ARM: Ensure do_cache_op takes mmap_sem
ARM: Fix __cpuexit section mismatch warnings
ARM: Don't allow highmem on SMP platforms without h/w TLB ops broadcast
ARM: includecheck fix: mach-davinci, board-dm365-evm.c
ARM: Remove unused CONFIG SA1100_H3XXX
ARM: Fix warning: unused variable 'highmem'
ARM: Fix warning: #warning syscall migrate_pages not implemented
ARM: Fix SA11x0 clocksource warning
ARM: Fix SA1100 Neponset serial section mismatch
ARM: Fix SA1100 Assabet/Neponset PCMCIA section mismatch warnings
...
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/arm/tcm.txt | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/Documentation/arm/tcm.txt b/Documentation/arm/tcm.txt index 074f4be6667f..77fd9376e6d7 100644 --- a/Documentation/arm/tcm.txt +++ b/Documentation/arm/tcm.txt | |||
| @@ -29,11 +29,13 @@ TCM location and size. Notice that this is not a MMU table: you | |||
| 29 | actually move the physical location of the TCM around. At the | 29 | actually move the physical location of the TCM around. At the |
| 30 | place you put it, it will mask any underlying RAM from the | 30 | place you put it, it will mask any underlying RAM from the |
| 31 | CPU so it is usually wise not to overlap any physical RAM with | 31 | CPU so it is usually wise not to overlap any physical RAM with |
| 32 | the TCM. The TCM memory exists totally outside the MMU and will | 32 | the TCM. |
| 33 | override any MMU mappings. | ||
| 34 | 33 | ||
| 35 | Code executing inside the ITCM does not "see" any MMU mappings | 34 | The TCM memory can then be remapped to another address again using |
| 36 | and e.g. register accesses must be made to physical addresses. | 35 | the MMU, but notice that the TCM if often used in situations where |
| 36 | the MMU is turned off. To avoid confusion the current Linux | ||
| 37 | implementation will map the TCM 1 to 1 from physical to virtual | ||
| 38 | memory in the location specified by the machine. | ||
| 37 | 39 | ||
| 38 | TCM is used for a few things: | 40 | TCM is used for a few things: |
| 39 | 41 | ||