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xtensa: move MPU constants from .data to .ref.rodata

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MPU attribute mapping table is R/O, move it from .data to __REFCONST
(as the rest of the _startup code where initialize_cacheattr is used is
in the __REF section). This allows executing initialize_cacheattr before
the data section of the XIP kernel is relocated to its place.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov 2019-09-29 19:55:09 -07:00
parent 6591685d50
commit 6af4ab570d
1 changed files with 2 additions and 1 deletions
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3
arch/xtensa/include/asm/initialize_mmu.h
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@ -23,6 +23,7 @@
#ifndef _XTENSA_INITIALIZE_MMU_H
#define _XTENSA_INITIALIZE_MMU_H
#include <linux/init.h>
#include <asm/pgtable.h>
#include <asm/vectors.h>
@ -183,7 +184,7 @@
#endif
#if XCHAL_HAVE_MPU
.data
__REFCONST
.align 4
.Lattribute_table:
.long 0x000000, 0x1fff00, 0x1ddf00, 0x1eef00