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xtensa: cleanup MMU setup and kernel layout macros

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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>
This commit is contained in:
Max Filippov
2016-04-13 05:20:02 +03:00
parent d39af90265
commit a9f2fc628e
12 changed files with 96 additions and 103 deletions
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4
arch/xtensa/kernel/vmlinux.lds.S
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@@ -30,10 +30,6 @@ jiffies = jiffies_64 + 4;
jiffies = jiffies_64;
#endif
#ifndef KERNELOFFSET
#define KERNELOFFSET 0xd0003000
#endif
/* Note: In the following macros, it would be nice to specify only the
vector name and section kind and construct "sym" and "section" using
CPP concatenation, but that does not work reliably. Concatenating a