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DM: Add funciton to update PM_WAK_STS
According to ACPI spec, when system back to working mode from S3, WAK_STS bit (15) should be set. Signed-off-by: Yin Fengwei <fengwei.yin@intel.com> Reviewed-by: Victor Sun <victor.sun@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
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@ -175,6 +175,15 @@ pm1_status_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes,
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return 0;
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}
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void
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pm_backto_wakeup(struct vmctx *ctx)
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{
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/* According to ACPI 5.0 Table 4-16: bit 15, WAK_STS should be
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* set when system trasition to the working state
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*/
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pm1_status |= PM1_WAK_STS;
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}
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static int
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pm1_enable_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes,
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uint32_t *eax, void *arg)
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@ -622,6 +622,7 @@ vm_suspend_resume(struct vmctx *ctx)
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vm_stop_watchdog(ctx);
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wait_for_resume(ctx);
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pm_backto_wakeup(ctx);
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vm_reset_watchdog(ctx);
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vm_reset(ctx);
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}
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@ -58,5 +58,6 @@ void dsdt_indent(int levels);
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void dsdt_unindent(int levels);
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void sci_init(struct vmctx *ctx);
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void pm_write_dsdt(struct vmctx *ctx, int ncpu);
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void pm_backto_wakeup(struct vmctx *ctx);
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#endif /* _ACPI_H_ */
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