c105d9ab3f
The dot is not needed, as it is no sentence and followed by a line break. Change-Id: I3905853eb7039f9c6d2486a77da47a4460276624 Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/30806 Reviewed-by: Patrick Georgi <pgeorgi@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
111 lines
2.6 KiB
C
111 lines
2.6 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <console/console.h>
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#include <string.h>
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#include <arch/acpi.h>
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#include <arch/cpu.h>
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#include <cbmem.h>
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#include <commonlib/helpers.h>
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#include <fallback.h>
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#include <timestamp.h>
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#include <program_loading.h>
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#include <romstage_handoff.h>
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#include <symbols.h>
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#include <cpu/x86/smm.h>
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#if ENV_RAMSTAGE || ENV_POSTCAR
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/* This is filled with acpi_is_wakeup() call early in ramstage. */
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static int acpi_slp_type = -1;
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static void acpi_handoff_wakeup(void)
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{
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if (acpi_slp_type < 0) {
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if (romstage_handoff_is_resume()) {
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printk(BIOS_DEBUG, "S3 Resume\n");
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acpi_slp_type = ACPI_S3;
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} else {
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printk(BIOS_DEBUG, "Normal boot\n");
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acpi_slp_type = ACPI_S0;
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}
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}
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}
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int acpi_is_wakeup(void)
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{
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acpi_handoff_wakeup();
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/* Both resume from S2 and resume from S3 restart at CPU reset */
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return (acpi_slp_type == ACPI_S3 || acpi_slp_type == ACPI_S2);
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}
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int acpi_is_wakeup_s3(void)
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{
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acpi_handoff_wakeup();
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return (acpi_slp_type == ACPI_S3);
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}
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int acpi_is_wakeup_s4(void)
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{
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acpi_handoff_wakeup();
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return (acpi_slp_type == ACPI_S4);
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}
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#endif /* ENV_RAMSTAGE */
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#define WAKEUP_BASE 0x600
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asmlinkage void (*acpi_do_wakeup)(uintptr_t vector) = (void *)WAKEUP_BASE;
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extern unsigned char __wakeup;
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extern unsigned int __wakeup_size;
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static void acpi_jump_to_wakeup(void *vector)
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{
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if (!acpi_s3_resume_allowed()) {
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printk(BIOS_WARNING, "ACPI: S3 resume not allowed.\n");
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return;
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}
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/* Copy wakeup trampoline in place. */
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memcpy((void *)WAKEUP_BASE, &__wakeup, __wakeup_size);
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set_boot_successful();
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timestamp_add_now(TS_ACPI_WAKE_JUMP);
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acpi_do_wakeup((uintptr_t)vector);
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}
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void __weak mainboard_suspend_resume(void)
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{
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}
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void acpi_resume(void *wake_vec)
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{
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if (CONFIG(HAVE_SMI_HANDLER)) {
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void *gnvs_address = cbmem_find(CBMEM_ID_ACPI_GNVS);
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/* Restore GNVS pointer in SMM if found */
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if (gnvs_address) {
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printk(BIOS_DEBUG, "Restore GNVS pointer to %p\n",
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gnvs_address);
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smm_setup_structures(gnvs_address, NULL, NULL);
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}
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}
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/* Call mainboard resume handler first, if defined. */
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mainboard_suspend_resume();
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post_code(POST_OS_RESUME);
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acpi_jump_to_wakeup(wake_vec);
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}
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