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#include <linux/linkage.h>
#define SPC_PHYS_BASE 0x7FFF0000
#define A15_CONF 0x400
ENTRY(tc2_cpu_resume)
mrc p15, 0, r0, c0, c0, 5
ands r0, r0, #0xff00
ldr r1, =SPC_PHYS_BASE
mov r2, #A15_CONF
add r1, r1, r2
ldr r1, [r1]
and r1, r1, #0x7
cmp r1, r0, lsr #8
adr r0, value
addne r0, r0, #16
ldmia r0, {r1, r2, r3, r4} @ CCI address, SCC snoop control & val
mvn r3, r3 @ undo actions done at shutdown
ldr r0, [r2]
and r5, r0, r3
str r5, [r2]
mov r0, #3 @ enable CCI for the cluster
str r0, [r1]
adr r1, cci_ctrl
ldr r1, [r1]
loop:
ldr r0, [r1]
ands r0, r0, #1
bne loop
mov r0, #0 @ disable power down enable
str r0, [r4]
b cpu_resume
ENDPROC(tc2_cpu_resume)
ENTRY(disable_snoops)
mrc p15, 0, r0, c0, c0, 5
ands r0, r0, #0xff00
ldr r1, scc_ptr
ldr r1, [r1]
mov r2, #A15_CONF
add r1, r1, r2
ldr r1, [r1]
and r1, r1, #0x7
cmp r1, r0, lsr #8
adr r0, vvalue
addne r0, r0, #8
ldmia r0, {r2, r3} @ CCI address, SCC snoop control & val
ldr r1, scc_ptr
ldr r1, [r1]
add r2, r1, r2
ldr r0, [r2]
orr r0, r0, r3
dsb
isb
str r0, [r2]
wfi
ENDPROC(disable_snoops)
cci_ctrl:
.long 0x2c09000c
value:
.long 0x2c094000
.long 0x7fff0404
.long 0x180
.long 0x7fff0b30
.long 0x2c095000
.long 0x7fff0504
.long 0x2000
.long 0x7fff0b34
vvalue:
.long 0x404
.long 0x180
.long 0x504
.long 0x2000
scc_ptr:
.long vscc
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