mirror of
https://github.com/AsahiLinux/u-boot
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82a5648f56
Before jumping to OS waking up vector, we need turn on ACPI mode for S3, just like what we do for a normal boot. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Stefan Roese <sr@denx.de>
34 lines
738 B
C
34 lines
738 B
C
/*
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* Copyright (C) 2017, Bin Meng <bmeng.cn@gmail.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <asm/acpi_s3.h>
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#include <asm/acpi_table.h>
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#include <asm/post.h>
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static void asmlinkage (*acpi_do_wakeup)(void *vector) = (void *)WAKEUP_BASE;
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static void acpi_jump_to_wakeup(void *vector)
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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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printf("Jumping to OS waking vector %p\n", vector);
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acpi_do_wakeup(vector);
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}
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void acpi_resume(struct acpi_fadt *fadt)
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{
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void *wake_vec;
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/* Turn on ACPI mode for S3 */
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enter_acpi_mode(fadt->pm1a_cnt_blk);
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wake_vec = acpi_find_wakeup_vector(fadt);
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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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