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Diffstat (limited to 'Documentation/arm/memory.txt')
| -rw-r--r-- | Documentation/arm/memory.txt | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/Documentation/arm/memory.txt b/Documentation/arm/memory.txt index 771d48d3b33..38dc06d0a79 100644 --- a/Documentation/arm/memory.txt +++ b/Documentation/arm/memory.txt @@ -41,25 +41,20 @@ fffe8000 fffeffff DTCM mapping area for platforms with fffe0000 fffe7fff ITCM mapping area for platforms with ITCM mounted inside the CPU. -fff00000 fffdffff Fixmap mapping region. Addresses provided +ffc00000 ffdfffff Fixmap mapping region. Addresses provided by fix_to_virt() will be located here. -ffc00000 ffefffff DMA memory mapping region. Memory returned - by the dma_alloc_xxx functions will be - dynamically mapped here. - -ff000000 ffbfffff Reserved for future expansion of DMA - mapping region. - -VMALLOC_END feffffff Free for platform use, recommended. - VMALLOC_END must be aligned to a 2MB - boundary. +fee00000 feffffff Mapping of PCI I/O space. This is a static + mapping within the vmalloc space. VMALLOC_START VMALLOC_END-1 vmalloc() / ioremap() space. Memory returned by vmalloc/ioremap will be dynamically placed in this region. - VMALLOC_START may be based upon the value - of the high_memory variable. + Machine specific static mappings are also + located here through iotable_init(). + VMALLOC_START is based upon the value + of the high_memory variable, and VMALLOC_END + is equal to 0xff000000. PAGE_OFFSET high_memory-1 Kernel direct-mapped RAM region. This maps the platforms RAM, and typically |