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x86: apl: Generate CPU tables

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Add ACPI generation to the APL CPU driver.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2020-09-22 12:45:21 -06:00 committed by Bin Meng
parent abb4e42b75
commit 60c0231078
3 changed files with 80 additions and 1 deletions
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77
arch/x86/cpu/apollolake/cpu.c
View file

@ -6,14 +6,90 @@
#include <common.h>
#include <cpu.h>
#include <dm.h>
#include <log.h>
#include <acpi/acpigen.h>
#include <acpi/acpi_table.h>
#include <asm/cpu_common.h>
#include <asm/cpu_x86.h>
#include <asm/intel_acpi.h>
#include <asm/msr.h>
#include <dm/acpi.h>
#define CSTATE_RES(address_space, width, offset, address) \
{ \
.space_id = address_space, \
.bit_width = width, \
.bit_offset = offset, \
.addrl = address, \
}
static struct acpi_cstate cstate_map[] = {
{
/* C1 */
.ctype = 1, /* ACPI C1 */
.latency = 1,
.power = 1000,
.resource = {
.space_id = ACPI_ADDRESS_SPACE_FIXED,
},
}, {
.ctype = 2, /* ACPI C2 */
.latency = 50,
.power = 10,
.resource = {
.space_id = ACPI_ADDRESS_SPACE_IO,
.bit_width = 8,
.addrl = 0x415,
},
}, {
.ctype = 3, /* ACPI C3 */
.latency = 150,
.power = 10,
.resource = {
.space_id = ACPI_ADDRESS_SPACE_IO,
.bit_width = 8,
.addrl = 0x419,
},
},
};
static int apl_get_info(const struct udevice *dev, struct cpu_info *info)
{
return cpu_intel_get_info(info, INTEL_BCLK_MHZ);
}
static int acpi_cpu_fill_ssdt(const struct udevice *dev, struct acpi_ctx *ctx)
{
uint core_id = dev->req_seq;
int cores_per_package;
int ret;
cores_per_package = cpu_get_cores_per_package();
ret = acpi_generate_cpu_header(ctx, core_id, cstate_map,
ARRAY_SIZE(cstate_map));
/* Generate P-state tables */
generate_p_state_entries(ctx, core_id, cores_per_package);
/* Generate T-state tables */
generate_t_state_entries(ctx, core_id, cores_per_package, NULL, 0);
acpigen_pop_len(ctx);
if (device_is_last_sibling(dev)) {
ret = acpi_generate_cpu_package_final(ctx, cores_per_package);
if (ret)
return ret;
}
return 0;
}
struct acpi_ops apl_cpu_acpi_ops = {
.fill_ssdt = acpi_cpu_fill_ssdt,
};
static const struct cpu_ops cpu_x86_apl_ops = {
.get_desc = cpu_x86_get_desc,
.get_info = apl_get_info,
@ -32,5 +108,6 @@ U_BOOT_DRIVER(cpu_x86_apl_drv) = {
.of_match = cpu_x86_apl_ids,
.bind = cpu_x86_bind,
.ops = &cpu_x86_apl_ops,
ACPI_OPS_PTR(&apl_cpu_acpi_ops)
.flags = DM_FLAG_PRE_RELOC,
};

3
arch/x86/lib/Makefile
View file

@ -38,7 +38,8 @@ obj-y += sfi.o
obj-y += acpi.o
obj-$(CONFIG_HAVE_ACPI_RESUME) += acpi_s3.o
ifndef CONFIG_QEMU
obj-$(CONFIG_GENERATE_ACPI_TABLE) += acpi_table.o acpigen.o
obj-y += acpigen.o
obj-$(CONFIG_GENERATE_ACPI_TABLE) += acpi_table.o
endif
obj-y += tables.o
ifndef CONFIG_SPL_BUILD

1
configs/chromebook_coral_defconfig
View file

@ -72,6 +72,7 @@ CONFIG_ENV_OVERWRITE=y
CONFIG_REGMAP=y
CONFIG_SYSCON=y
CONFIG_SPL_OF_TRANSLATE=y
CONFIG_INTEL_ACPIGEN=y
CONFIG_CPU=y
CONFIG_DM_I2C=y
CONFIG_SYS_I2C_DW=y