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acpi: Change Processor ACPI Name (Intel only)

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The ACPI Spec 2.0 states, that Processor declarations should be made
within the ACPI namespace \_SB and not \_PR anymore. \_PR is deprecated
and is removed here for Intel CPUs only.

Tested on:
* X11SSH (Kabylake)
* CFL Platform
* Asus P8Z77-V LX2 and Windows 10

FWTS does not return FAIL anymore on ACPI tests

Tested-by: Angel Pons <th3fanbus@gmail.com>
Change-Id: Ib101ed718f90f9056d2ecbc31b13b749ed1fc438
Signed-off-by: Christian Walter <christian.walter@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37814
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This commit is contained in:
Christian Walter
2019-12-18 15:07:59 +01:00
committed by Nico Huber
parent 09eb8d0c9b
commit be3979c873
30 changed files with 140 additions and 137 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/arch/x86/acpigen.c
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@@ -340,7 +340,7 @@ void acpigen_write_scope(const char *name)
void acpigen_write_processor(u8 cpuindex, u32 pblock_addr, u8 pblock_len)
{
/*
Processor (\_PR.CPcpuindex, cpuindex, pblock_addr, pblock_len)
Processor (\_SB.CPcpuindex, cpuindex, pblock_addr, pblock_len)
{
*/
char pscope[16];
@@ -376,7 +376,7 @@ void acpigen_write_processor_cnot(const unsigned int number_of_cores)
{
int core_id;
acpigen_write_method("\\_PR.CNOT", 1);
acpigen_write_method("\\_SB.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,