amd: Don't call halt() when in SMM
This copies what Intel does. BUG=b:80295434 TEST=grunt: Made sure that the S5 SMI interrupt gets fired. Change-Id: I7874824cad01054c6bdeff12d248e671f27be030 Signed-off-by: Raul E Rangel <rrangel@chromium.org> Reviewed-on: https://review.coreboot.org/26545 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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@ -20,5 +20,12 @@
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void poweroff(void)
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{
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outl((SLP_TYP_S5 << SLP_TYP_SHIFT) | SLP_EN, pm_acpi_pm_cnt_blk());
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halt();
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/*
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* Setting SLP_TYP_S5 in PM1 triggers SLP_SMI, which is handled by SMM
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* to transition to S5 state. If halt is called in SMM, then it prevents
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* the SMI handler from being triggered and system never enters S5.
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*/
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if (!ENV_SMM)
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halt();
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}
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