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| author | Max Filippov <jcmvbkbc@gmail.com> | 2016-04-13 04:20:02 +0200 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2016-07-24 05:33:58 +0200 |
| commit | a9f2fc628e3a26a829fd79aff74eb49839d1e74b (patch) | |
| tree | 7dad4e57c917757d39bb3470720392ac2b92b335 /arch/xtensa/kernel/entry.S | |
| parent | xtensa: add alternative kernel memory layouts (diff) | |
| download | linux-a9f2fc628e3a26a829fd79aff74eb49839d1e74b.tar.xz linux-a9f2fc628e3a26a829fd79aff74eb49839d1e74b.zip | |
xtensa: cleanup MMU setup and kernel layout macros
Make kernel load address explicit, independent of the selected MMU
configuration and configurable from Kconfig. Do not restrict it to the
first 512MB of the physical address space.
Cleanup kernel memory layout macros:
- rename VECBASE_RESET_VADDR to VECBASE_VADDR, XC_VADDR to VECTOR_VADDR;
- drop VIRTUAL_MEMORY_ADDRESS and LOAD_MEMORY_ADDRESS;
- introduce PHYS_OFFSET and use it in __va and __pa definitions;
- synchronize MMU/noMMU vectors, drop unused NMI vector;
- replace hardcoded vectors offset of 0x3000 with Kconfig symbol.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch/xtensa/kernel/entry.S')
| -rw-r--r-- | arch/xtensa/kernel/entry.S | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S index fe8f7e7efb9d..fa04d9d368a7 100644 --- a/arch/xtensa/kernel/entry.S +++ b/arch/xtensa/kernel/entry.S @@ -1632,10 +1632,11 @@ ENTRY(fast_second_level_miss) * The messy computation for 'pteval' above really simplifies * into the following: * - * pteval = ((pmdval - PAGE_OFFSET) & PAGE_MASK) | PAGE_DIRECTORY + * pteval = ((pmdval - PAGE_OFFSET + PHYS_OFFSET) & PAGE_MASK) + * | PAGE_DIRECTORY */ - movi a1, (-PAGE_OFFSET) & 0xffffffff + movi a1, (PHYS_OFFSET - PAGE_OFFSET) & 0xffffffff add a0, a0, a1 # pmdval - PAGE_OFFSET extui a1, a0, 0, PAGE_SHIFT # ... & PAGE_MASK xor a0, a0, a1 |