diff options
| author | Arthur Heymans <arthur@aheymans.xyz> | 2018-11-28 12:20:43 +0100 |
|---|---|---|
| committer | Duncan Laurie <dlaurie@chromium.org> | 2018-11-30 21:52:40 +0000 |
| commit | 1a9efe3b28b42de4ff8191098cec524de563f02d (patch) | |
| tree | 5fec99e7327d5621b97e717a0b6a45cfd349380b /src/soc/intel | |
| parent | a783305072a34fc4402f87b1d00c7a68a4ba38f8 (diff) | |
| download | coreboot-1a9efe3b28b42de4ff8191098cec524de563f02d.tar.xz | |
soc/intel/braswell: Rework acpi/cpu.asl
Use acpigen_write_processor_cnot to implement notifications to the CPU.
Change-Id: I93c11e89da34c5432c6ce0415998b47bad339763
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/29889
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/intel')
| -rw-r--r-- | src/soc/intel/braswell/acpi.c | 7 | ||||
| -rw-r--r-- | src/soc/intel/braswell/acpi/cpu.asl | 53 |
2 files changed, 15 insertions, 45 deletions
diff --git a/src/soc/intel/braswell/acpi.c b/src/soc/intel/braswell/acpi.c index e7910724c4..5c66ea127a 100644 --- a/src/soc/intel/braswell/acpi.c +++ b/src/soc/intel/braswell/acpi.c @@ -448,6 +448,13 @@ void generate_cpu_entries(struct device *device) acpigen_pop_len(); } + + /* PPKG is usually used for thermal management + of the first and only package. */ + acpigen_write_processor_package("PPKG", 0, pattrs->num_cpus); + + /* Add a method to notify processor nodes */ + acpigen_write_processor_cnot(pattrs->num_cpus); } unsigned long acpi_madt_irq_overrides(unsigned long current) diff --git a/src/soc/intel/braswell/acpi/cpu.asl b/src/soc/intel/braswell/acpi/cpu.asl index 8bfd63274b..5c153f4a59 100644 --- a/src/soc/intel/braswell/acpi/cpu.asl +++ b/src/soc/intel/braswell/acpi/cpu.asl @@ -14,60 +14,23 @@ * GNU General Public License for more details. */ -/* These devices are created at runtime */ -External (\_PR.CP00, DeviceObj) -External (\_PR.CP01, DeviceObj) -External (\_PR.CP02, DeviceObj) -External (\_PR.CP03, DeviceObj) +/* These come from the dynamically created CPU SSDT */ +External (\_PR.CNOT, MethodObj) - -/* Notify OS to re-read CPU tables, assuming ^2 CPU count */ +/* Notify OS to re-read CPU tables */ Method (PNOT) { - If (LGreaterEqual (\PCNT, 2)) { - Notify (\_PR.CP00, 0x81) /* _CST */ - Notify (\_PR.CP01, 0x81) /* _CST */ - } - If (LGreaterEqual (\PCNT, 4)) { - Notify (\_PR.CP02, 0x81) /* _CST */ - Notify (\_PR.CP03, 0x81) /* _CST */ - } + \_PR.CNOT (0x81) } -/* Notify OS to re-read CPU _PPC limit, assuming ^2 CPU count */ +/* Notify OS to re-read CPU _PPC limit */ Method (PPCN) { - If (LGreaterEqual (\PCNT, 2)) { - Notify (\_PR.CP00, 0x80) /* _PPC */ - Notify (\_PR.CP01, 0x80) /* _PPC */ - } - If (LGreaterEqual (\PCNT, 4)) { - Notify (\_PR.CP02, 0x80) /* _PPC */ - Notify (\_PR.CP03, 0x80) /* _PPC */ - } + \_PR.CNOT (0x80) } -/* Notify OS to re-read Throttle Limit tables, assuming ^2 CPU count */ +/* Notify OS to re-read Throttle Limit tables */ Method (TNOT) { - If (LGreaterEqual (\PCNT, 2)) { - Notify (\_PR.CP00, 0x82) /* _TPC */ - Notify (\_PR.CP01, 0x82) /* _TPC */ - } - If (LGreaterEqual (\PCNT, 4)) { - Notify (\_PR.CP02, 0x82) /* _TPC */ - Notify (\_PR.CP03, 0x82) /* _TPC */ - } -} - -/* Return a package containing enabled processor entries */ -Method (PPKG) -{ - If (LGreaterEqual (\PCNT, 4)) { - Return (Package() {\_PR.CP00, \_PR.CP01, \_PR.CP02, \_PR.CP03}) - } ElseIf (LGreaterEqual (\PCNT, 2)) { - Return (Package() {\_PR.CP00, \_PR.CP01}) - } Else { - Return (Package() {\_PR.CP00}) - } + \_PR.CNOT (0x82) } |