5bda44d7f9
As these functions are used on pre-ARMv6 CPUs as well we don't want to make assembler assume that architecture is higher than default one.
72 lines
1.6 KiB
ArmAsm
72 lines
1.6 KiB
ArmAsm
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2013 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/symbol.h>
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.file "cache_armv6.S"
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.text
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.syntax unified
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.arm
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# define DMB mcr p15, 0, r0, c7, c10, 5
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# define DSB mcr p15, 0, r0, c7, c10, 4
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# define ISB mcr p15, 0, r0, c7, c5, 4
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#define ARMV6 1
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clean_invalidate_dcache:
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mcr p15, 0, r0, c7, c14, 0 @ Clean/Invalidate D-cache
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bx lr
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#include "cache.S"
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FUNCTION(grub_arm_main_id)
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mrc p15, 0, r0, c0, c0, 0
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bx lr
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FUNCTION(grub_arm_cache_type)
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mrc p15, 0, r0, c0, c0, 1
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bx lr
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FUNCTION(grub_arm_clear_mmu_v6)
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mov r0, #0
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mcr p15, 0, r0, c2, c0, 2
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bx lr
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FUNCTION(grub_arm_enable_mmu)
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mcr p15, 0, r0, c2, c0, 0
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mvn r0, #0
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mcr p15, 0, r0, c3, c0, 0
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mrc p15, 0, r0, c1, c0, 0
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bic r0, r0, #(1 << 23)
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mcr p15, 0, r0, c1, c0, 0
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mrc p15, 0, r0, c1, c0, 0
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orr r0, r0, #(1 << 0)
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mcr p15, 0, r0, c1, c0, 0
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mrc p15, 0, r0, c1, c0, 0
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orr r0, r0, #(1 << 2)
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mcr p15, 0, r0, c1, c0, 0
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mrc p15, 0, r0, c1, c0, 0
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orr r0, r0, #(1 << 12)
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mcr p15, 0, r0, c1, c0, 0
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bx lr
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