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scram: run _PTS(5) and disable GPEs before entering S5. x200s shuts down properly now

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ftrvxmtrx 2016-10-15 23:10:53 +02:00
parent 7392dce0a7
commit 375ad2d3ab
1 changed files with 20 additions and 0 deletions
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20
sys/src/cmd/scram.c
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@ -6,6 +6,7 @@
int fd, iofd;
struct Ureg u;
ulong PM1a_CNT_BLK, PM1b_CNT_BLK, SLP_TYPa, SLP_TYPb;
ulong GPE0_BLK, GPE1_BLK, GPE0_BLK_LEN, GPE1_BLK_LEN;
enum {
SLP_EN = 0x2000,
SLP_TM = 0x1c00,
@ -78,6 +79,10 @@ loadacpi(void)
else if(memcmp("FACP", t->sig, 4) == 0){
PM1a_CNT_BLK = get32(((uchar*)t) + 64);
PM1b_CNT_BLK = get32(((uchar*)t) + 68);
GPE0_BLK = get32(((uchar*)t) + 80);
GPE1_BLK = get32(((uchar*)t) + 84);
GPE0_BLK_LEN = *(((uchar*)t) + 92);
GPE1_BLK_LEN = *(((uchar*)t) + 93);
}
}
if(amleval(amlwalk(amlroot, "_S5"), "", &r) < 0)
@ -121,6 +126,8 @@ wirecpu0(void)
void
main()
{
int n;
wirecpu0();
if((fd = open("/dev/apm", ORDWR)) < 0)
@ -146,6 +153,19 @@ tryacpi:
if(loadacpi() < 0)
goto fail;
/* prepare for sleep */
amleval(amlwalk(amlroot, "_PTS"), "i", 5, nil);
/* disable GPEs */
for(n = 0; GPE0_BLK > 0 && n < GPE0_BLK_LEN/2; n += 2){
outw(GPE0_BLK + GPE0_BLK_LEN/2 + n, 0); /* EN */
outw(GPE0_BLK + n, 0xff); /* STS */
}
for(n = 0; GPE1_BLK > 0 && n < GPE1_BLK_LEN/2; n += 2){
outw(GPE1_BLK + GPE1_BLK_LEN/2 + n, 0); /* EN */
outw(GPE1_BLK + n, 0xff); /* STS */
}
outw(PM1a_CNT_BLK, ((SLP_TYPa << 10) & SLP_TM) | SLP_EN);
outw(PM1b_CNT_BLK, ((SLP_TYPb << 10) & SLP_TM) | SLP_EN);
sleep(100);