diff options
Diffstat (limited to 'arch/x86/cpu/cpu.c')
| -rw-r--r-- | arch/x86/cpu/cpu.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/arch/x86/cpu/cpu.c b/arch/x86/cpu/cpu.c index d08b7d9b1e0..290ee084e5e 100644 --- a/arch/x86/cpu/cpu.c +++ b/arch/x86/cpu/cpu.c @@ -179,17 +179,32 @@ __weak void board_final_cleanup(void) int last_stage_init(void) { + struct acpi_fadt __maybe_unused *fadt; + board_final_cleanup(); -#if CONFIG_HAVE_ACPI_RESUME - struct acpi_fadt *fadt = acpi_find_fadt(); +#ifdef CONFIG_HAVE_ACPI_RESUME + fadt = acpi_find_fadt(); - if (fadt != NULL && gd->arch.prev_sleep_state == ACPI_S3) + if (fadt && gd->arch.prev_sleep_state == ACPI_S3) acpi_resume(fadt); #endif write_tables(); +#ifdef CONFIG_GENERATE_ACPI_TABLE + fadt = acpi_find_fadt(); + + /* Don't touch ACPI hardware on HW reduced platforms */ + if (fadt && !(fadt->flags & ACPI_FADT_HW_REDUCED_ACPI)) { + /* + * Other than waiting for OSPM to request us to switch to ACPI + * mode, do it by ourselves, since SMI will not be triggered. + */ + enter_acpi_mode(fadt->pm1a_cnt_blk); + } +#endif + return 0; } #endif |