Change in coreboot[master]: [WIP] arch/x86/acpigen: Add function to write a CPU package

[Nico Huber (Code Review)]

Nico Huber has uploaded this change for review. ( https://review.coreboot.org/21324

Change subject: [WIP] arch/x86/acpigen: Add function to write a CPU package
......................................................................

[WIP] arch/x86/acpigen: Add function to write a CPU package

Emits a list of CPU cores, e.g.

Name (PPKG, Package (2) { _PR.CP00, _PR.CP01 })

Change-Id: I10e9ebad84343d1fb282b3fbb28f5f014f664f14
Signed-off-by: Nico Huber 
---
M src/arch/x86/acpigen.c
M src/arch/x86/include/arch/acpigen.h
2 files changed, 19 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/24/21324/1

diff --git a/src/arch/x86/acpigen.c b/src/arch/x86/acpigen.c
index 758386d..d97723c 100644
--- a/src/arch/x86/acpigen.c
+++ b/src/arch/x86/acpigen.c
@@ -353,6 +353,23 @@
    acpigen_emit_byte(pblock_len);
 }

+void acpigen_write_processor_package(const char *const name,
+				     const size_t first_core,
+				     const size_t core_count)
+{
+	size_t i;
+	char pscope[16];
+
+	acpigen_write_name(name);
+	acpigen_write_package(core_count);
+	for (i = first_core; i < core_count; ++i) {
+		snprintf(pscope, sizeof(pscope),
+			 CONFIG_ACPI_CPU_STRING, (unsigned int)i);
+		acpigen_emit_namestring(pscope);
+	}
+	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 37d0d55..68d7957 100644
--- a/src/arch/x86/include/arch/acpigen.h
+++ b/src/arch/x86/include/arch/acpigen.h
@@ -219,6 +219,8 @@
 void acpigen_write_CSD_package(u32 domain, u32 numprocs, CSD_coord coordtype,
    			u32 index);
 void acpigen_write_processor(u8 cpuindex, u32 pblock_addr, u8 pblock_len);
+void acpigen_write_processor_package(const char *name,
+				     size_t first_core, size_t core_count);
 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);