diff options
| author | Felix Held <felix-coreboot@felixheld.de> | 2023-05-12 15:55:06 +0200 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2023-05-13 18:34:44 +0000 |
| commit | f0a8b042c9f1eed9b149398d27e16ec590641881 (patch) | |
| tree | 16c8f74e50232aa17e4326b9ed2494c995802d18 /src/acpi | |
| parent | 3d19aa9ce88ce89ace33603e1c0efe2547803144 (diff) | |
acpi/Kconfig: move \_SB scope out of ACPI_CPU_STRING
In ACPI 1.0 the processor objects were inside the \_PR scope, but since
ACPI 2.0 the \_SB scope can be used for that. Outside of coreboot some
firmwares still used the \_PR scope for a while for legacy ACPI 1.0 OS
compatibility, but apart from that the \_PR scope is deprecated.
coreboot already uses the \_SB scope for the processor devices
everywhere, so move the \_SB scope out of the ACPI_CPU_STRING to the
format string inside the 3 snprintf statements that use the
ACPI_CPU_STRING.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Suggested-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Change-Id: I76f18594a3a623b437a163c270547d3e9618c31a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75167
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Tim Wawrzynczak <inforichland@gmail.com>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Diffstat (limited to 'src/acpi')
| -rw-r--r-- | src/acpi/Kconfig | 6 | ||||
| -rw-r--r-- | src/acpi/acpigen.c | 5 |
2 files changed, 5 insertions, 6 deletions
diff --git a/src/acpi/Kconfig b/src/acpi/Kconfig index 3b02070554..a45a68c458 100644 --- a/src/acpi/Kconfig +++ b/src/acpi/Kconfig @@ -8,13 +8,11 @@ config ACPI_AMD_HARDWARE_SLEEP_VALUES config ACPI_CPU_STRING string - default "\\_SB.CP%02X" + default "CP%02X" depends on HAVE_ACPI_TABLES help Specifies the ACPI name format string used by the acpigen - function to generate the processor scope. Default is \_SB.CPxx. - Note that you need to escape the '\' character in the string. - The resulting string will be truncated to at most 15 chars. + function to generate the processor scope. Default is CPxx. config ACPI_HAVE_PCAT_8259 def_bool y if !ACPI_NO_PCAT_8259 diff --git a/src/acpi/acpigen.c b/src/acpi/acpigen.c index 6bc587577f..9a9f5c52bd 100644 --- a/src/acpi/acpigen.c +++ b/src/acpi/acpigen.c @@ -391,7 +391,7 @@ void acpigen_set_package_element_namestr(const char *package, unsigned int eleme void acpigen_write_processor_namestring(unsigned int cpu_index) { char buffer[16]; - snprintf(buffer, sizeof(buffer), CONFIG_ACPI_CPU_STRING, cpu_index); + snprintf(buffer, sizeof(buffer), "\\_SB." CONFIG_ACPI_CPU_STRING, cpu_index); acpigen_emit_namestring(buffer); } @@ -1939,7 +1939,8 @@ void acpigen_write_CPPC_package(const struct cppc_config *config) void acpigen_write_CPPC_method(void) { char pscope[16]; - snprintf(pscope, sizeof(pscope), CONFIG_ACPI_CPU_STRING "." CPPC_PACKAGE_NAME, 0); + snprintf(pscope, sizeof(pscope), + "\\_SB." CONFIG_ACPI_CPU_STRING "." CPPC_PACKAGE_NAME, 0); acpigen_write_method("_CPC", 0); acpigen_emit_byte(RETURN_OP); |