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platform: generic: Add system suspend test

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When the system-suspend-test property is present in the domain config
node as shown below, implement system suspend with a simple 5 second
delay followed by a WFI. This allows testing system suspend when the
low-level firmware doesn't support it.

  / {
    chosen {
      opensbi-domains {
          compatible = "opensbi,domain,config";
          system-suspend-test;
      };

Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Andrew Jones 2023-02-27 11:31:06 +01:00 • committed by Anup Patel
parent 37558dccbe
commit 5ccebf0a7e
4 changed files with 55 additions and 1 deletions
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1
include/sbi/sbi_system.h
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@ -66,6 +66,7 @@ struct sbi_system_suspend_device {
const struct sbi_system_suspend_device *sbi_system_suspend_get_device(void);
void sbi_system_suspend_set_device(struct sbi_system_suspend_device *dev);
void sbi_system_suspend_test_enable(void);
bool sbi_system_suspend_supported(u32 sleep_type);
int sbi_system_suspend(u32 sleep_type, ulong resume_addr, ulong opaque);