diff options
| author | Marshall Dawson <marshall.dawson@scarletltd.com> | 2018-08-03 17:05:22 -0600 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2018-08-08 17:51:27 +0000 |
| commit | 2e49cf129ac0f3326989cd1202904a3f02d1d467 (patch) | |
| tree | c7c3afb88c91194fe63d564cf68056923de70375 /src/soc/amd/stoneyridge/include | |
| parent | bd4a3f8cd9ec4c59ad1d33102958e525a9c8c6ef (diff) | |
amd/stoneyridge: Add warm reset detection
Extend the existing reset handling features in Stoney Ridge to plan for,
and recognize, warm resets. The ColdRstDet bit is always zero on a cold
reset, and is intended as a mechanism for the BIOS to determine the type
of a reset that occurred.
Set ColdRstDet=1 after all cores have been initialized, so that any
subsequent reset may be identified as warm/cold. A later patch will check
the value during mp_init.
Change-Id: I90255918de03018c9f090bff1e56a8bda5e7365e
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/27924
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/soc/amd/stoneyridge/include')
| -rw-r--r-- | src/soc/amd/stoneyridge/include/soc/northbridge.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/soc/amd/stoneyridge/include/soc/northbridge.h b/src/soc/amd/stoneyridge/include/soc/northbridge.h index 666be10e1e..56ae36345d 100644 --- a/src/soc/amd/stoneyridge/include/soc/northbridge.h +++ b/src/soc/amd/stoneyridge/include/soc/northbridge.h @@ -30,6 +30,7 @@ # define CPU_CNT_MASK 0x1f /* CpuCnt + 1 = no. CPUs */ #define HT_INIT_CONTROL 0x6c # define HTIC_BIOSR_DETECT ((1 << 5) | (1 << 9) | (1 << 10)) +# define HTIC_COLD_RST_DET BIT(4) /* NB IOAPIC registers */ #define NB_IOAPIC_INDEX 0xf8 @@ -116,5 +117,7 @@ uint32_t nb_ioapic_read(unsigned int index); void nb_ioapic_write(unsigned int index, uint32_t value); void *get_ap_entry_ptr(void); void set_ap_entry_ptr(void *entry); +void set_warm_reset_flag(void); +int is_warm_reset(void); #endif /* __PI_STONEYRIDGE_NORTHBRIDGE_H__ */ |