123 lines
1.9 KiB
ArmAsm
123 lines
1.9 KiB
ArmAsm
/*
|
|
* Copyright (c) 2018 Synopsys.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
#include <zephyr/toolchain.h>
|
|
#include <zephyr/linker/sections.h>
|
|
#include <zephyr/arch/cpu.h>
|
|
|
|
.macro clear_scratch_regs
|
|
mov r1, 0
|
|
mov r2, 0
|
|
mov r3, 0
|
|
mov r4, 0
|
|
mov r5, 0
|
|
mov r6, 0
|
|
mov r7, 0
|
|
mov r8, 0
|
|
mov r9, 0
|
|
mov r10, 0
|
|
mov r11, 0
|
|
mov r12, 0
|
|
.endm
|
|
|
|
.macro clear_callee_regs
|
|
mov r25, 0
|
|
mov r24, 0
|
|
mov r23, 0
|
|
mov r22, 0
|
|
mov r21, 0
|
|
mov r20, 0
|
|
mov r19, 0
|
|
mov r18, 0
|
|
mov r17, 0
|
|
mov r16, 0
|
|
|
|
mov r15, 0
|
|
mov r14, 0
|
|
mov r13, 0
|
|
.endm
|
|
|
|
GTEXT(arc_go_to_normal)
|
|
GTEXT(_arc_do_secure_call)
|
|
GDATA(arc_s_call_table)
|
|
|
|
|
|
SECTION_FUNC(TEXT, _arc_do_secure_call)
|
|
/* r0-r5: arg1-arg6, r6 is call id */
|
|
/* the call id should be checked */
|
|
/* disable normal interrupt happened when processor in secure mode ? */
|
|
/* seti (0x30 | (ARC_N_IRQ_START_LEVEL-1)) */
|
|
breq r6, ARC_S_CALL_CLRI, _s_clri
|
|
breq r6, ARC_S_CALL_SETI, _s_seti
|
|
push_s blink
|
|
mov blink, arc_s_call_table
|
|
ld.as r6, [blink, r6]
|
|
|
|
jl [r6]
|
|
|
|
/*
|
|
* no need to clear callee regs, as they will be saved and restored
|
|
* automatically
|
|
*/
|
|
clear_scratch_regs
|
|
|
|
mov r29, 0
|
|
mov r30, 0
|
|
|
|
|
|
_arc_do_secure_call_exit:
|
|
pop_s blink
|
|
|
|
j [blink]
|
|
/* enable normal interrupt */
|
|
/*
|
|
* j.d [blink]
|
|
* seti (0x30 | (CONFIG_NUM_IRQ_PRIO_LEVELS - 1))
|
|
*/
|
|
|
|
_s_clri:
|
|
lr r0, [_ARC_V2_STATUS32]
|
|
and r0, r0, 0x1e
|
|
asr r0, r0
|
|
or r0, r0, 0x30
|
|
mov r6, (0x30 | (ARC_N_IRQ_START_LEVEL-1))
|
|
|
|
j.d [blink]
|
|
seti r6
|
|
|
|
_s_seti:
|
|
btst r0, 4
|
|
jnz __seti_0
|
|
mov r0, (CONFIG_NUM_IRQ_PRIO_LEVELS - 1)
|
|
lr r6, [_ARC_V2_STATUS32]
|
|
and r6, r6, 0x1e
|
|
asr r6, r6
|
|
cmp r0, r6
|
|
mov.hs r0, r6
|
|
__seti_0:
|
|
and r0, r0, 0xf
|
|
brhs r0, ARC_N_IRQ_START_LEVEL, __seti_1
|
|
mov r0, ARC_N_IRQ_START_LEVEL
|
|
__seti_1:
|
|
or r0, r0, 0x30
|
|
|
|
j.d [blink]
|
|
seti r0
|
|
|
|
|
|
SECTION_FUNC(TEXT, arc_go_to_normal)
|
|
clear_callee_regs
|
|
clear_scratch_regs
|
|
|
|
mov fp, 0
|
|
mov r29, 0
|
|
mov r30, 0
|
|
mov blink, 0
|
|
|
|
jl [r0]
|
|
/* should not come here */
|
|
kflag 1
|
|
|