49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <asm/types.h>
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#include <asm/suspend.h>
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#include <asm-generic/errno.h>
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#include <common.h>
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#include <asm/arch/bl31_apis.h>
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/*
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* This is allocated by cpu_suspend_init(), and used to store a pointer to
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* the 'struct sleep_stack_data' the contains a particular CPUs state.
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*/
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unsigned long sleep_save_stash;
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/*
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* cpu_suspend
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*
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* arg: argument to pass to the finisher function
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* fn: finisher function pointer
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*
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*/
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int cpu_suspend(unsigned long arg)
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{
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int ret = 0;
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struct sleep_stack_data state;
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printf("enter %s %d\n", __func__, __LINE__);
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if (__cpu_suspend_enter(&state)) {
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printf("enter %s %d\n", __func__, __LINE__);
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/* Call the suspend finisher */
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aml_reboot(0xc400000e, (uint64_t)cpu_resume, 0, 0);
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/*
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* Never gets here, unless the suspend finisher fails.
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* Successful cpu_suspend() should return from cpu_resume(),
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* returning through this code path is considered an error
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* If the return value is set to 0 force ret = -EOPNOTSUPP
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* to make sure a proper error condition is propagated
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*/
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if (!ret)
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ret = -EOPNOTSUPP;
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}
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return ret;
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}
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