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rt-thread-official/bsp/rm48x50/HALCoGen/source/sys_mpu.asm

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;-------------------------------------------------------------------------------
; sys_mpu.asm
;
; (c) Texas Instruments 2009-2013, All rights reserved.
;
.text
.arm
;-------------------------------------------------------------------------------
; Initalize Mpu
.def _mpuInit_
.asmfunc
_mpuInit_
stmfd sp!, {r0}
; Disable mpu
mrc p15, #0, r0, c1, c0, #0
bic r0, r0, #1
dsb
mcr p15, #0, r0, c1, c0, #0
isb
; Disable background region
mrc p15, #0, r0, c1, c0, #0
bic r0, r0, #0x20000
mcr p15, #0, r0, c1, c0, #0
; Setup region 1
mov r0, #0
mcr p15, #0, r0, c6, c2, #0
ldr r0, r1Base
mcr p15, #0, r0, c6, c1, #0
mov r0, #0x0008
orr r0, r0, #0x1000
mcr p15, #0, r0, c6, c1, #4
movw r0, #((1 << 15) + (1 << 14) + (1 << 13) + (1 << 12) + (1 << 11) + (1 << 10) + (1 << 9) + (1 << 8) + (0x1F << 1) + (1))
mcr p15, #0, r0, c6, c1, #2
; Setup region 2
mov r0, #1
mcr p15, #0, r0, c6, c2, #0
ldr r0, r2Base
mcr p15, #0, r0, c6, c1, #0
mov r0, #0x0008
orr r0, r0, #0x0600
mcr p15, #0, r0, c6, c1, #4
movw r0, #((0 << 15) + (0 << 14) + (0 << 13) + (0 << 12) + (0 << 11) + (0 << 10) + (0 << 9) + (0 << 8) + (0x15 << 1) + (1))
mcr p15, #0, r0, c6, c1, #2
; Setup region
mov r0, #2
mcr p15, #0, r0, c6, c2, #0
ldr r0, r3Base
mcr p15, #0, r0, c6, c1, #0
mov r0, #0x0008
orr r0, r0, #0x0300
mcr p15, #0, r0, c6, c1, #4
movw r0, #((0 << 15) + (0 << 14) + (0 << 13) + (0 << 12) + (0 << 11) + (0 << 10) + (0 << 9) + (0 << 8) + (0x11 << 1) + (1))
mcr p15, #0, r0, c6, c1, #2
; Setup region 4
mov r0, #3
mcr p15, #0, r0, c6, c2, #0
ldr r0, r4Base
mcr p15, #0, r0, c6, c1, #0
mov r0, #0x0008
orr r0, r0, #0x0300
mcr p15, #0, r0, c6, c1, #4
movw r0, #((0 << 15) + (0 << 14) + (0 << 13) + (0 << 12) + (0 << 11) + (0 << 10) + (0 << 9) + (0 << 8) + (0x11 << 1) + (1))
mcr p15, #0, r0, c6, c1, #2
; Setup region 5
mov r0, #4
mcr p15, #0, r0, c6, c2, #0
ldr r0, r5Base
mcr p15, #0, r0, c6, c1, #0
mov r0, #0x0000
orr r0, r0, #0x0300
mcr p15, #0, r0, c6, c1, #4
movw r0, #((1 << 15) + (1 << 14) + (0 << 13) + (0 << 12) + (0 << 11) + (0 << 10) + (0 << 9) + (0 << 8) + (0x19 << 1) + (1))
mcr p15, #0, r0, c6, c1, #2
; Setup region 6
mov r0, #5
mcr p15, #0, r0, c6, c2, #0
ldr r0, r6Base
mcr p15, #0, r0, c6, c1, #0
mov r0, #0x0000
orr r0, r0, #0x0300
mcr p15, #0, r0, c6, c1, #4
movw r0, #((0 << 15) + (0 << 14) + (0 << 13) + (0 << 12) + (0 << 11) + (0 << 10) + (0 << 9) + (0 << 8) + (0x1A << 1) + (1))
mcr p15, #0, r0, c6, c1, #2
; Setup region 7
mov r0, #6
mcr p15, #0, r0, c6, c2, #0
ldr r0, r7Base
mcr p15, #0, r0, c6, c1, #0
mov r0, #0x0008
orr r0, r0, #0x1200
mcr p15, #0, r0, c6, c1, #4
movw r0, #((0 << 15) + (0 << 14) + (0 << 13) + (0 << 12) + (0 << 11) + (0 << 10) + (0 << 9) + (0 << 8) + (0x16 << 1) + (1))
mcr p15, #0, r0, c6, c1, #2
; Setup region 8
mov r0, #7
mcr p15, #0, r0, c6, c2, #0
ldr r0, r8Base
mcr p15, #0, r0, c6, c1, #0
mov r0, #0x0010
orr r0, r0, #0x1300
mcr p15, #0, r0, c6, c1, #4
movw r0, #((0 << 15) + (0 << 14) + (0 << 13) + (0 << 12) + (0 << 11) + (0 << 10) + (0 << 9) + (0 << 8) + (0x17 << 1) + (1))
mcr p15, #0, r0, c6, c1, #2
; Setup region 9
mov r0, #8
mcr p15, #0, r0, c6, c2, #0
ldr r0, r9Base
mcr p15, #0, r0, c6, c1, #0
mov r0, #0x0010
orr r0, r0, #0x1300
mcr p15, #0, r0, c6, c1, #4
movw r0, #((0 << 15) + (0 << 14) + (0 << 13) + (0 << 12) + (0 << 11) + (0 << 10) + (0 << 9) + (0 << 8) + (0x08 << 1) + (1))
mcr p15, #0, r0, c6, c1, #2
; Setup region 10
mov r0, #9
mcr p15, #0, r0, c6, c2, #0
ldr r0, r10Base
mcr p15, #0, r0, c6, c1, #0
mov r0, #0x0010
orr r0, r0, #0x1300
mcr p15, #0, r0, c6, c1, #4
movw r0, #((0 << 15) + (0 << 14) + (0 << 13) + (0 << 12) + (0 << 11) + (0 << 10) + (0 << 9) + (0 << 8) + (0x17 << 1) + (1))
mcr p15, #0, r0, c6, c1, #2
; Setup region 11
mov r0, #10
mcr p15, #0, r0, c6, c2, #0
ldr r0, r11Base
mcr p15, #0, r0, c6, c1, #0
mov r0, #0x0008
orr r0, r0, #0x1100
mcr p15, #0, r0, c6, c1, #4
movw r0, #((1 << 15) + (1 << 14) + (1 << 13) + (0 << 12) + (0 << 11) + (0 << 10) + (0 << 9) + (0 << 8) + (0x0A << 1) + (0))
mcr p15, #0, r0, c6, c1, #2
; Setup region 12
mov r0, #11
mcr p15, #0, r0, c6, c2, #0
ldr r0, r12Base
mcr p15, #0, r0, c6, c1, #0
mov r0, #0x0008
orr r0, r0, #0x1300
mcr p15, #0, r0, c6, c1, #4
movw r0, #((1 << 15) + (1 << 14) + (0 << 13) + (0 << 12) + (0 << 11) + (0 << 10) + (0 << 9) + (0 << 8) + (0x15 << 1) + (0))
mcr p15, #0, r0, c6, c1, #2
; Enable mpu background region
mrc p15, #0, r0, c1, c0, #0
orr r0, r0, #0x20000
mcr p15, #0, r0, c1, c0, #0
; Enable mpu
mrc p15, #0, r0, c1, c0, #0
orr r0, r0, #1
dsb
mcr p15, #0, r0, c1, c0, #0
isb
ldmfd sp!, {r0}
bx lr
r1Base .word 0x00000000
r2Base .word 0x00000000
r3Base .word 0x08000000
r4Base .word 0x08400000
r5Base .word 0x60000000
r6Base .word 0x80000000
r7Base .word 0xF0000000
r8Base .word 0xFC000000
r9Base .word 0xFE000000
r10Base .word 0xFF000000
r11Base .word 0x08001000
r12Base .word 0x20000000
.endasmfunc
;-------------------------------------------------------------------------------
; Enable Mpu
.def _mpuEnable_
.asmfunc
_mpuEnable_
stmfd sp!, {r0}
mrc p15, #0, r0, c1, c0, #0
orr r0, r0, #1
dsb
mcr p15, #0, r0, c1, c0, #0
isb
ldmfd sp!, {r0}
bx lr
.endasmfunc
;-------------------------------------------------------------------------------
; Disable Mpu
.def _mpuDisable_
.asmfunc
_mpuDisable_
stmfd sp!, {r0}
mrc p15, #0, r0, c1, c0, #0
bic r0, r0, #1
dsb
mcr p15, #0, r0, c1, c0, #0
isb
ldmfd sp!, {r0}
bx lr
.endasmfunc
;-------------------------------------------------------------------------------
; Enable Mpu background region
.def _mpuEnableBackgroundRegion_
.asmfunc
_mpuEnableBackgroundRegion_
stmfd sp!, {r0}
mrc p15, #0, r0, c1, c0, #0
orr r0, r0, #0x20000
mcr p15, #0, r0, c1, c0, #0
ldmfd sp!, {r0}
bx lr
.endasmfunc
;-------------------------------------------------------------------------------
; Disable Mpu background region
.def _mpuDisableBackgroundRegion_
.asmfunc
_mpuDisableBackgroundRegion_
stmfd sp!, {r0}
mrc p15, #0, r0, c1, c0, #0
bic r0, r0, #0x20000
mcr p15, #0, r0, c1, c0, #0
ldmfd sp!, {r0}
bx lr
.endasmfunc
;-------------------------------------------------------------------------------
; Returns number of implemented Mpu regions
.def _mpuGetNumberOfRegions_
.asmfunc
_mpuGetNumberOfRegions_
mrc p15, #0, r0, c0, c0, #4
uxtb r0, r0, ROR #8
bx lr
.endasmfunc
;-------------------------------------------------------------------------------
; Returns the type of the implemented mpu regions
.def _mpuAreRegionsSeparate_
.asmfunc
_mpuAreRegionsSeparate_
mrc p15, #0, r0, c0, c0, #4
uxtb r0, r0
bx lr
.endasmfunc
;-------------------------------------------------------------------------------
; Set mpu region number
.def _mpuSetRegion_
.asmfunc
_mpuSetRegion_
mcr p15, #0, r0, c6, c2, #0
bx lr
.endasmfunc
;-------------------------------------------------------------------------------
; Get mpu region number
.def _mpuGetRegion_
.asmfunc
_mpuGetRegion_
mrc p15, #0, r0, c6, c2, #0
bx lr
.endasmfunc
;-------------------------------------------------------------------------------
; Set base address
.def _mpuSetRegionBaseAddress_
.asmfunc
_mpuSetRegionBaseAddress_
mcr p15, #0, r0, c6, c1, #0
bx lr
.endasmfunc
;-------------------------------------------------------------------------------
; Get base address
.def _mpuGetRegionBaseAddress_
.asmfunc
_mpuGetRegionBaseAddress_
mrc p15, #0, r0, c6, c1, #0
bx lr
.endasmfunc
;-------------------------------------------------------------------------------
; Set type and permission
.def _mpuSetRegionTypeAndPermission_
.asmfunc
_mpuSetRegionTypeAndPermission_
orr r0, r0, r1
mcr p15, #0, r0, c6, c1, #4
bx lr
.endasmfunc
;-------------------------------------------------------------------------------
; Get type
.def _mpuGetRegionType_
.asmfunc
_mpuGetRegionType_
mrc p15, #0, r0, c6, c1, #4
bic r0, r0, #0xFF00
bx lr
.endasmfunc
;-------------------------------------------------------------------------------
; Get permission
.def _mpuGetRegionPermission_
.asmfunc
_mpuGetRegionPermission_
mrc p15, #0, r0, c6, c1, #4
bic r0, r0, #0xFF
bx lr
.endasmfunc
;-------------------------------------------------------------------------------
; Set region size register value
.def _mpuSetRegionSizeRegister_
.asmfunc
_mpuSetRegionSizeRegister_
mcr p15, #0, r0, c6, c1, #2
bx lr
.endasmfunc
;-------------------------------------------------------------------------------
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