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Diffstat (limited to 'src/soc/amd/common/block')
| -rw-r--r-- | src/soc/amd/common/block/acpi/halt.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/soc/amd/common/block/acpi/halt.c b/src/soc/amd/common/block/acpi/halt.c index 6038a8c736..8fba38dc03 100644 --- a/src/soc/amd/common/block/acpi/halt.c +++ b/src/soc/amd/common/block/acpi/halt.c @@ -20,5 +20,12 @@ void poweroff(void) { outl((SLP_TYP_S5 << SLP_TYP_SHIFT) | SLP_EN, pm_acpi_pm_cnt_blk()); - halt(); + + /* + * Setting SLP_TYP_S5 in PM1 triggers SLP_SMI, which is handled by SMM + * to transition to S5 state. If halt is called in SMM, then it prevents + * the SMI handler from being triggered and system never enters S5. + */ + if (!ENV_SMM) + halt(); } |