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authorArthur Heymans <arthur@aheymans.xyz>2018-11-28 13:18:57 +0100
committerPatrick Georgi <pgeorgi@google.com>2018-11-29 12:19:31 +0000
commit8f05527485776aab00115cfcb627c5eeb6debcde (patch)
tree0412937a9227802f36c2c5cee17a0a736a0705a0 /src/arch
parent6df3b64c77a868ab8526b980561ed2be3fe392b6 (diff)
downloadcoreboot-8f05527485776aab00115cfcb627c5eeb6debcde.tar.xz
arch/x86/acpigen.c: Add a method to notify all CPU cores
Change-Id: If8b07fdcec51c344a82309d4af3b6127ad758baf Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/29895 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
Diffstat (limited to 'src/arch')
-rw-r--r--src/arch/x86/acpigen.c17
-rw-r--r--src/arch/x86/include/arch/acpigen.h1
2 files changed, 18 insertions, 0 deletions
diff --git a/src/arch/x86/acpigen.c b/src/arch/x86/acpigen.c
index 426a5426b7..290893d719 100644
--- a/src/arch/x86/acpigen.c
+++ b/src/arch/x86/acpigen.c
@@ -369,6 +369,23 @@ void acpigen_write_processor_package(const char *const name,
acpigen_pop_len();
}
+/* Method to notify all CPU cores */
+void acpigen_write_processor_cnot(const unsigned int number_of_cores)
+{
+ int core_id;
+
+ acpigen_write_method("\\_PR.CNOT", 1);
+ for (core_id = 0; core_id < number_of_cores; core_id++) {
+ char buffer[DEVICE_PATH_MAX];
+ snprintf(buffer, sizeof(buffer), CONFIG_ACPI_CPU_STRING,
+ core_id);
+ acpigen_emit_byte(NOTIFY_OP);
+ acpigen_emit_namestring(buffer);
+ acpigen_emit_byte(ARG0_OP);
+ }
+ acpigen_pop_len();
+}
+
/*
* Generate ACPI AML code for OperationRegion
* Arg0: Pointer to struct opregion opreg = OPREGION(rname, space, offset, len)
diff --git a/src/arch/x86/include/arch/acpigen.h b/src/arch/x86/include/arch/acpigen.h
index a27bd6f277..d9379eb25a 100644
--- a/src/arch/x86/include/arch/acpigen.h
+++ b/src/arch/x86/include/arch/acpigen.h
@@ -277,6 +277,7 @@ void acpigen_write_processor(u8 cpuindex, u32 pblock_addr, u8 pblock_len);
void acpigen_write_processor_package(const char *name,
unsigned int first_core,
unsigned int core_count);
+void acpigen_write_processor_cnot(const unsigned int number_of_cores);
void acpigen_write_TSS_package(int entries, acpi_tstate_t *tstate_list);
void acpigen_write_TSD_package(u32 domain, u32 numprocs, PSD_coord coordtype);
void acpigen_write_mem32fixed(int readwrite, u32 base, u32 size);