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|
;
; Copyright (c) 2012, ARM Limited. All rights reserved.
;
; Redistribution and use in source and binary forms, with
; or without modification, are permitted provided that the
; following conditions are met:
;
; Redistributions of source code must retain the above
; copyright notice, this list of conditions and the
; following disclaimer.
;
; Redistributions in binary form must reproduce the
; above copyright notice, this list of conditions and
; the following disclaimer in the documentation
; and/or other materials provided with the distribution.
;
; Neither the name of ARM nor the names of its
; contributors may be used to endorse or promote products
; derived from this software without specific prior written
; permission.
;
EXPORT isb
EXPORT dsb
EXPORT dmb
EXPORT wfi
EXPORT endless_wfi
EXPORT wfe
EXPORT sev
EXPORT copy_words
EXPORT appf_memcpy
EXPORT appf_memset
EXPORT get_cpu_type
EXPORT va_to_pa
EXPORT read_cbar
EXPORT read_sctlr
EXPORT read_actlr
EXPORT read_prrr
EXPORT read_nmrr
EXPORT read_l2ctlr
EXPORT read_dacr
EXPORT read_ttbr0
EXPORT read_cpacr
EXPORT read_scr
EXPORT read_cpsr
EXPORT read_midr
EXPORT read_mpidr
EXPORT read_cntpct
EXPORT read_cntfrq
EXPORT read_vmpidr
EXPORT read_vmidr
EXPORT read_vttbr
EXPORT read_httbr
EXPORT read_id_pfr0
EXPORT read_id_pfr1
EXPORT read_id_dfr0
EXPORT read_id_afr0
EXPORT read_id_mmfr0
EXPORT read_id_mmfr1
EXPORT read_id_mmfr2
EXPORT read_id_mmfr3
EXPORT read_id_isar0
EXPORT read_id_isar1
EXPORT read_id_isar2
EXPORT read_id_isar3
EXPORT read_id_isar4
EXPORT read_id_isar5
EXPORT read_cpuid
EXPORT read_aidr
EXPORT read_ctr
EXPORT read_tcmtr
EXPORT read_tlbtr
EXPORT read_clusterid
EXPORT read_l2ctlr
EXPORT read_hsctlr
EXPORT read_hdfar
EXPORT read_hpfar
EXPORT read_vtcr
EXPORT read_hcr
EXPORT read_hdcr
EXPORT read_hcptr
EXPORT read_hstr
EXPORT read_cnthctl
EXPORT read_cntkctl
EXPORT read_cntp_ctl
EXPORT read_cntp_tval
EXPORT read_cnthp_ctl
EXPORT read_cnthp_tval
EXPORT read_cnthp_cval
EXPORT read_ttbcr
EXPORT read_nsacr
EXPORT read_clidr
EXPORT read_csselr
EXPORT read_ccsidr
EXPORT read_nmrr
EXPORT read_prrr
EXPORT read_mvbar
EXPORT read_vbar
EXPORT read_hsr
EXPORT read_dfar
EXPORT read_ifar
EXPORT read_dfsr
EXPORT read_ifsr
EXPORT read_adfsr
EXPORT read_aifsr
EXPORT read_l2ectlr
EXPORT read_pmuserenr
EXPORT read_pmintenset
EXPORT read_pmintenclr
EXPORT read_pmovsset
EXPORT read_pmccntr
EXPORT read_pmxevtyper
EXPORT read_pmxevcntr
EXPORT read_pmcr
EXPORT read_pmcntenset
EXPORT read_pmcntenclr
EXPORT read_pmovsr
EXPORT read_pmswinc
EXPORT read_pmselr
EXPORT read_pmceid0
EXPORT read_pmceid1
EXPORT write_l2ectlr
EXPORT write_pmuserenr
EXPORT write_pmintenset
EXPORT write_pmintenclr
EXPORT write_pmovsset
EXPORT write_pmccntr
EXPORT write_pmxevtyper
EXPORT write_pmxevcntr
EXPORT write_pmcr
EXPORT write_pmcntenset
EXPORT write_pmcntenclr
EXPORT write_pmovsr
EXPORT write_pmswinc
EXPORT write_pmselr
EXPORT write_pmceid0
EXPORT write_pmceid1
EXPORT write_dacr
EXPORT write_prrr
EXPORT write_nmrr
EXPORT write_ttbr0
EXPORT write_cpacr
EXPORT write_nsacr
EXPORT write_scr
EXPORT write_mvbar
EXPORT write_vbar
EXPORT write_hvbar
EXPORT write_vmpidr
EXPORT write_vmidr
EXPORT write_csselr
EXPORT write_hcr
EXPORT write_hdcr
EXPORT write_hcptr
EXPORT write_hstr
EXPORT write_sctlr
EXPORT write_actlr
EXPORT write_ttbcr
EXPORT write_cntfrq
EXPORT write_cnthctl
EXPORT write_cntkctl
EXPORT write_cntp_ctl
EXPORT write_cntp_tval
EXPORT write_cnthp_ctl
EXPORT write_cnthp_tval
EXPORT write_cnthp_cval
EXPORT write_hsctlr
EXPORT write_httbr
EXPORT write_vttbr
EXPORT write_htcr
EXPORT write_vtcr
EXPORT write_hmair0
EXPORT write_hmair1
EXPORT write_dfar
EXPORT write_ifar
EXPORT write_dfsr
EXPORT write_ifsr
EXPORT write_adfsr
EXPORT write_aifsr
MIDR_CPU_MASK EQU 0xff00fff0
AREA ACSR, CODE, ALIGN=5
dmb FUNCTION
dmb
bx lr
ENDFUNC
wfi FUNCTION
wfi
bx lr
ENDFUNC
; WFI forever, and attempt to prevent speculative accesses starting
; FIQ and IRQ are assumed to be disabled
endless_wfi FUNCTION
b wfistart
ALIGN 32
wfistart
b bloop
loop
dsb
wfi
bloop
b loop
ENDFUNC
wfe FUNCTION
wfe
bx lr
ENDFUNC
sev FUNCTION
sev
bx lr
ENDFUNC
; This function takes three arguments
; r0: Destination start address (must be word aligned)
; r1: Source start address (must be word aligned)
; r2: Number of words to copy
; Return value is updated destination pointer (first unwritten word)
copy_words FUNCTION
cmp r2, #0
beq %f1
0 ldr r3, [r1], #4
str r3, [r0], #4
subs r2, r2, #1
bne %b0
1 bx lr
ENDFUNC
appf_memcpy FUNCTION
cmp r2, #0
bxeq lr
0 ldrb r3, [r1], #1
strb r3, [r0], #1
subs r2, #1
bne %b0
bx lr
ENDFUNC
appf_memset FUNCTION
cmp r2, #0
bxeq lr
0 strb r1, [r0], #1
subs r2, #1
bne %b0
bx lr
ENDFUNC
read_cntfrq FUNCTION
mrc p15, 0, r0, c14, c0, 0
bx lr
ENDFUNC
write_cntfrq FUNCTION
mcr p15, 0, r0, c14, c0, 0
bx lr
ENDFUNC
read_cntpct FUNCTION
mrrc p15, 0, r0, r1, c14
bx lr
ENDFUNC
isb FUNCTION
isb
bx lr
ENDFUNC
read_vmpidr FUNCTION
mrc p15, 4, r0, c0, c0, 5
bx lr
ENDFUNC
read_vmidr FUNCTION
mrc p15, 4, r0, c0, c0, 0
bx lr
ENDFUNC
read_id_pfr0 FUNCTION
mrc p15, 0, r0, c0, c1, 0
bx lr
ENDFUNC
read_id_pfr1 FUNCTION
mrc p15, 0, r0, c0, c1, 1
bx lr
ENDFUNC
read_id_dfr0 FUNCTION
mrc p15, 0, r0, c0, c1, 2
bx lr
ENDFUNC
read_id_afr0 FUNCTION
mrc p15, 0, r0, c0, c1, 3
bx lr
ENDFUNC
read_id_mmfr0 FUNCTION
mrc p15, 0, r0, c0, c1, 4
bx lr
ENDFUNC
read_id_mmfr1 FUNCTION
mrc p15, 0, r0, c0, c1, 5
bx lr
ENDFUNC
read_id_mmfr2 FUNCTION
mrc p15, 0, r0, c0, c1, 6
bx lr
ENDFUNC
read_id_mmfr3 FUNCTION
mrc p15, 0, r0, c0, c1, 7
bx lr
ENDFUNC
read_id_isar0 FUNCTION
mrc p15, 0, r0, c0, c2, 0
bx lr
ENDFUNC
read_id_isar1 FUNCTION
mrc p15, 0, r0, c0, c2, 1
bx lr
ENDFUNC
read_id_isar2 FUNCTION
mrc p15, 0, r0, c0, c2, 2
bx lr
ENDFUNC
read_id_isar3 FUNCTION
mrc p15, 0, r0, c0, c2, 3
bx lr
ENDFUNC
read_id_isar4 FUNCTION
mrc p15, 0, r0, c0, c2, 4
bx lr
ENDFUNC
read_id_isar5 FUNCTION
mrc p15, 0, r0, c0, c2, 5
bx lr
ENDFUNC
read_ctr FUNCTION
mrc p15, 0, r0, c0, c0, 1
bx lr
ENDFUNC
read_tcmtr FUNCTION
mrc p15, 0, r0, c0, c0, 2
bx lr
ENDFUNC
read_tlbtr FUNCTION
mrc p15, 0, r0, c0, c0, 3
bx lr
ENDFUNC
read_aidr FUNCTION
mrc p15, 1, r0, c0, c0, 7
bx lr
ENDFUNC
read_dacr FUNCTION
mrc p15, 0, r0, c3, c0, 0
bx lr
ENDFUNC
read_ttbr0 FUNCTION
mrc p15, 0, r0, c2, c0, 0
bx lr
ENDFUNC
write_dacr FUNCTION
mcr p15, 0, r0, c3, c0, 0
isb
bx lr
ENDFUNC
read_cpacr FUNCTION
mrc p15, 0, r0, c1, c0, 2
bx lr
ENDFUNC
write_cpacr FUNCTION
mcr p15, 0, r0, c1, c0, 2
bx lr
ENDFUNC
read_midr FUNCTION
mrc p15, 0, r0, c0, c0, 0;
bx lr
ENDFUNC
read_mpidr FUNCTION
mrc p15, 0, r0, c0, c0, 5
bx lr
ENDFUNC
read_scr FUNCTION
mrc p15, 0, r0, c1, c1, 0
bx lr
ENDFUNC
write_scr FUNCTION
mcr p15, 0, r0, c1, c1, 0
dsb
isb
bx lr
ENDFUNC
write_nsacr FUNCTION
mcr p15, 0, r0, c1, c1, 2
dsb
isb
bx lr
ENDFUNC
read_cpsr FUNCTION
mrs r0, CPSR
bx lr
ENDFUNC
write_mvbar FUNCTION
mcr p15, 0, r0, c12, c0, 1
bx lr
ENDFUNC
write_vbar FUNCTION
mcr p15, 0, r0, c12, c0, 0
bx lr
ENDFUNC
write_hvbar FUNCTION
mcr p15, 4, r0, c12, c0, 0
bx lr
ENDFUNC
read_mvbar FUNCTION
mrc p15, 0, r0, c12, c0, 1
bx lr
ENDFUNC
read_vbar FUNCTION
mrc p15, 0, r0, c12, c0, 0
bx lr
ENDFUNC
read_cpuid FUNCTION
mrc p15, 0, r0, c0, c0, 5
ands r0, r0, #0xf
bx lr
ENDFUNC
read_clusterid FUNCTION
mrc p15, 0, r0, c0, c0, 5
lsr r0, r0, #0x8
ands r0, r0, #0xf
bx lr
ENDFUNC
write_ttbr0 FUNCTION
mcr p15, 0, r0, c2, c0, 0
mcr p15, 0, r0, c7, c5, 6
mcr p15, 0, r0, c8, c7, 0
dsb
isb
bx lr
ENDFUNC
read_ttbcr FUNCTION
mrc p15, 0, r0, c2, c0, 2
bx lr
ENDFUNC
write_ttbcr FUNCTION
mcr p15, 0, r0, c2, c0, 2
bx lr
ENDFUNC
write_vmpidr FUNCTION
mcr p15, 4, r0, c0, c0, 5
isb
bx lr
ENDFUNC
write_vmidr FUNCTION
mcr p15, 4, r0, c0, c0, 0
isb
bx lr
ENDFUNC
read_vtcr FUNCTION
mrc p15, 4, r0, c2, c1, 2
bx lr
ENDFUNC
read_hcr FUNCTION
mrc p15, 4, r0, c1, c1, 0
bx lr
ENDFUNC
read_hdcr FUNCTION
mrc p15, 4, r0, c1, c1, 1
bx lr
ENDFUNC
read_hcptr FUNCTION
mrc p15, 4, r0, c1, c1, 2
bx lr
ENDFUNC
read_hstr FUNCTION
mrc p15, 4, r0, c1, c1, 3
bx lr
ENDFUNC
read_httbr FUNCTION
mrrc p15, 4, r0, r1, c2
bx lr
ENDFUNC
read_vttbr FUNCTION
mrrc p15, 6, r0, r1, c2
bx lr
ENDFUNC
write_hcr FUNCTION
mcr p15, 4, r0, c1, c1, 0
dsb
isb
bx lr
ENDFUNC
write_hdcr FUNCTION
mcr p15, 4, r0, c1, c1, 1
bx lr
ENDFUNC
write_hcptr FUNCTION
mcr p15, 4, r0, c1, c1, 2
bx lr
ENDFUNC
write_hstr FUNCTION
mcr p15, 4, r0, c1, c1, 3
bx lr
ENDFUNC
write_httbr FUNCTION
mcrr p15, 4, r0, r1, c2
mcr p15, 0, r0, c7, c5, 6
mcr p15, 0, r0, c8, c7, 0
dsb
isb
bx lr
ENDFUNC
write_vttbr FUNCTION
mcrr p15, 6, r0, r1, c2
mcr p15, 0, r0, c7, c5, 6
mcr p15, 0, r0, c8, c7, 0
dsb
isb
bx lr
ENDFUNC
write_htcr FUNCTION
mcr p15, 4, r0, c2, c0, 2
bx lr
ENDFUNC
write_vtcr FUNCTION
mcr p15, 4, r0, c2, c1, 2
bx lr
ENDFUNC
write_hmair0 FUNCTION
mcr p15, 4, r0, c10, c2, 0
bx lr
ENDFUNC
write_hmair1 FUNCTION
mcr p15, 4, r0, c10, c2, 1
bx lr
ENDFUNC
read_nsacr FUNCTION
mrc p15, 0, r0, c1, c1, 2
bx lr
ENDFUNC
read_l2ctlr FUNCTION
mrc p15, 1, r0, c9, c0, 2
bx lr
ENDFUNC
read_l2ectlr FUNCTION
mrc p15, 1, r0, c9, c0, 3
bx lr
ENDFUNC
read_pmuserenr FUNCTION
mrc p15, 0, r0, c9, c14, 0
bx lr
ENDFUNC
read_pmintenset FUNCTION
mrc p15, 0, r0, c9, c14, 1
bx lr
ENDFUNC
read_pmintenclr FUNCTION
mrc p15, 0, r0, c9, c14, 2
bx lr
ENDFUNC
read_pmovsset FUNCTION
mrc p15, 0, r0, c9, c14, 3
bx lr
ENDFUNC
read_pmccntr FUNCTION
mrc p15, 0, r0, c9, c13, 0
bx lr
ENDFUNC
read_pmxevtyper FUNCTION
mrc p15, 0, r0, c9, c13, 1
bx lr
ENDFUNC
read_pmxevcntr FUNCTION
mrc p15, 0, r0, c9, c13, 2
bx lr
ENDFUNC
read_pmcr FUNCTION
mrc p15, 0, r0, c9, c12, 0
bx lr
ENDFUNC
read_pmcntenset FUNCTION
mrc p15, 0, r0, c9, c12, 1
bx lr
ENDFUNC
read_pmcntenclr FUNCTION
mrc p15, 0, r0, c9, c12, 2
bx lr
ENDFUNC
read_pmovsr FUNCTION
mrc p15, 0, r0, c9, c12, 3
bx lr
ENDFUNC
read_pmswinc FUNCTION
mrc p15, 0, r0, c9, c12, 4
bx lr
ENDFUNC
read_pmselr FUNCTION
mrc p15, 0, r0, c9, c12, 5
bx lr
ENDFUNC
read_pmceid0 FUNCTION
mrc p15, 0, r0, c9, c12, 6
bx lr
ENDFUNC
read_pmceid1 FUNCTION
mrc p15, 0, r0, c9, c12, 7
bx lr
ENDFUNC
write_l2ectlr FUNCTION
mcr p15, 1, r0, c9, c0, 3
bx lr
ENDFUNC
write_pmuserenr FUNCTION
mcr p15, 0, r0, c9, c14, 0
bx lr
ENDFUNC
write_pmintenset FUNCTION
mcr p15, 0, r0, c9, c14, 1
bx lr
ENDFUNC
write_pmintenclr FUNCTION
mcr p15, 0, r0, c9, c14, 2
bx lr
ENDFUNC
write_pmovsset FUNCTION
mcr p15, 0, r0, c9, c14, 3
bx lr
ENDFUNC
write_pmccntr FUNCTION
mcr p15, 0, r0, c9, c13, 0
bx lr
ENDFUNC
write_pmxevtyper FUNCTION
mcr p15, 0, r0, c9, c13, 1
bx lr
ENDFUNC
write_pmxevcntr FUNCTION
mcr p15, 0, r0, c9, c13, 2
bx lr
ENDFUNC
write_pmcr FUNCTION
mcr p15, 0, r0, c9, c12, 0
bx lr
ENDFUNC
write_pmcntenset FUNCTION
mcr p15, 0, r0, c9, c12, 1
bx lr
ENDFUNC
write_pmcntenclr FUNCTION
mcr p15, 0, r0, c9, c12, 2
bx lr
ENDFUNC
write_pmovsr FUNCTION
mcr p15, 0, r0, c9, c12, 3
bx lr
ENDFUNC
write_pmswinc FUNCTION
mcr p15, 0, r0, c9, c12, 4
bx lr
ENDFUNC
write_pmselr FUNCTION
mcr p15, 0, r0, c9, c12, 5
bx lr
ENDFUNC
write_pmceid0 FUNCTION
mcr p15, 0, r0, c9, c12, 6
bx lr
ENDFUNC
write_pmceid1 FUNCTION
mcr p15, 0, r0, c9, c12, 7
bx lr
ENDFUNC
read_sctlr FUNCTION
mrc p15, 0, r0, c1, c0, 0
bx lr
ENDFUNC
write_sctlr FUNCTION
mcr p15, 0, r0, c1, c0, 0
dsb
isb
bx lr
ENDFUNC
read_hsctlr FUNCTION
mrc p15, 4, r0, c1, c0, 0
bx lr
ENDFUNC
read_hdfar FUNCTION
mrc p15, 4, r0, c6, c0, 0
bx lr
ENDFUNC
read_hpfar FUNCTION
mrc p15, 4, r0, c6, c0, 4
bx lr
ENDFUNC
read_hsr FUNCTION
mrc p15, 4, r0, c5, c2, 0
bx lr
ENDFUNC
write_hsctlr FUNCTION
mcr p15, 4, r0, c1, c0, 0
dsb
isb
bx lr
ENDFUNC
read_cnthctl FUNCTION
mrc p15, 4, r0, c14, c1, 0
bx lr
ENDFUNC
read_cntkctl FUNCTION
mrc p15, 0, r0, c14, c1, 0
bx lr
ENDFUNC
read_cnthp_cval FUNCTION
mrrc p15, 6, r0, r1, c14
bx lr
ENDFUNC
read_cnthp_tval FUNCTION
mrc p15, 4, r0, c14, c2, 0
bx lr
ENDFUNC
read_cntp_tval FUNCTION
mrc p15, 0, r0, c14, c2, 0
bx lr
ENDFUNC
read_cntp_ctl FUNCTION
mrc p15, 0, r0, c14, c2, 1
bx lr
ENDFUNC
read_cnthp_ctl FUNCTION
mrc p15, 4, r0, c14, c2, 1
bx lr
ENDFUNC
write_cnthctl FUNCTION
mcr p15, 4, r0, c14, c1, 0
bx lr
ENDFUNC
write_cntkctl FUNCTION
mcr p15, 0, r0, c14, c1, 0
bx lr
ENDFUNC
write_cntp_tval FUNCTION
mcr p15, 0, r0, c14, c2, 0
isb
bx lr
ENDFUNC
write_cntp_ctl FUNCTION
mcr p15, 0, r0, c14, c2, 1
dsb
isb
bx lr
ENDFUNC
write_cnthp_cval FUNCTION
mcrr p15, 6, r0, r1, c14
dsb
isb
bx lr
ENDFUNC
write_cnthp_tval FUNCTION
mcr p15, 4, r0, c14, c2, 0
dsb
isb
bx lr
ENDFUNC
write_cnthp_ctl FUNCTION
mcr p15, 4, r0, c14, c2, 1
dsb
isb
bx lr
ENDFUNC
read_clidr FUNCTION
mrc p15, 1, r0, c0, c0, 1 ; read clidr
bx lr
ENDFUNC
read_ccsidr FUNCTION
mrc p15, 1, r0, c0, c0, 0 ; read ccsidr
bx lr
ENDFUNC
read_csselr FUNCTION
mrc p15, 2, r0, c0, c0, 0 ; read csselr
bx lr
ENDFUNC
write_csselr FUNCTION
mcr p15, 2, r0, c0, c0, 0 ; read csselr
dsb
isb
bx lr
ENDFUNC
read_actlr FUNCTION
mrc p15, 0, r0, c1, c0, 1
bx lr
ENDFUNC
write_actlr FUNCTION
mcr p15, 0, r0, c1, c0, 1
dsb
isb
bx lr
ENDFUNC
read_prrr FUNCTION
mrc p15, 0, r0, c10, c2, 0
bx lr
ENDFUNC
read_nmrr FUNCTION
mrc p15, 0, r0, c10, c2, 1
bx lr
ENDFUNC
write_prrr FUNCTION
mcr p15, 0, r0, c10, c2, 0
dsb
isb
bx lr
ENDFUNC
write_nmrr FUNCTION
mcr p15, 0, r0, c10, c2, 1
dsb
isb
bx lr
ENDFUNC
read_dfar FUNCTION
mrc p15, 0, r0, c6, c0, 0
bx lr
ENDFUNC
read_ifar FUNCTION
mrc p15, 0, r0, c6, c0, 2
bx lr
ENDFUNC
read_dfsr FUNCTION
mrc p15, 0, r0, c5, c0, 0
bx lr
ENDFUNC
read_ifsr FUNCTION
mrc p15, 0, r0, c5, c0, 1
bx lr
ENDFUNC
read_adfsr FUNCTION
mrc p15, 0, r0, c5, c1, 0
bx lr
ENDFUNC
read_aifsr FUNCTION
mrc p15, 0, r0, c5, c1, 1
bx lr
ENDFUNC
write_dfar FUNCTION
mcr p15, 0, r0, c6, c0, 0
dsb
isb
bx lr
ENDFUNC
write_ifar FUNCTION
mcr p15, 0, r0, c6, c0, 2
dsb
isb
bx lr
ENDFUNC
write_dfsr FUNCTION
mcr p15, 0, r0, c5, c0, 0
dsb
isb
bx lr
ENDFUNC
write_ifsr FUNCTION
mcr p15, 0, r0, c5, c0, 1
dsb
isb
bx lr
ENDFUNC
write_adfsr FUNCTION
mcr p15, 0, r0, c5, c1, 0
dsb
isb
bx lr
ENDFUNC
write_aifsr FUNCTION
mcr p15, 0, r0, c5, c1, 1
dsb
isb
bx lr
ENDFUNC
read_cbar FUNCTION
mrc p15, 4, r0, c15, c0, 0 ; Read Configuration Base Address Register
bx lr
ENDFUNC
get_cpu_type FUNCTION
mrc p15, 0, r0, c0, c0, 0; read MIDR
ldr r1, =MIDR_CPU_MASK
ands r0, r1
bx lr
ENDFUNC
dsb FUNCTION
dsb
bx lr
ENDFUNC
va_to_pa FUNCTION ; Note: assumes conversion will be successful!
mov r1, r0
mcr p15, 0, r0, c7, c8, 1 ; Priv Write Current World VA-PA
mrc p15, 0, r0, c7, c4, 0 ; Get PA
bfc r0, #0, #12 ; We want top bits of translated addr
bfc r1, #12, #20 ; plus bottom bits of input addr
orr r0, r0, r1
bx lr
ENDFUNC
END
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