diff options
Diffstat (limited to 'src/soc/intel/tigerlake/pmc.c')
| -rw-r--r-- | src/soc/intel/tigerlake/pmc.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/soc/intel/tigerlake/pmc.c b/src/soc/intel/tigerlake/pmc.c index 62e37114f3..c24898faf3 100644 --- a/src/soc/intel/tigerlake/pmc.c +++ b/src/soc/intel/tigerlake/pmc.c @@ -6,6 +6,7 @@ * Chapter number: 4 */ +#include <acpi/acpigen.h> #include <bootstate.h> #include <console/console.h> #include <device/mmio.h> @@ -17,6 +18,8 @@ #include <soc/pm.h> #include <soc/soc_chip.h> +#define PMC_HID "INTC1026" + enum pch_pmc_xtal pmc_get_xtal_freq(void) { uint8_t *const pmcbase = pmc_mmio_regs(); @@ -96,9 +99,36 @@ static void soc_pmc_read_resources(struct device *dev) res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; } +static void soc_pmc_fill_ssdt(const struct device *dev) +{ + acpigen_write_scope(acpi_device_scope(dev)); + acpigen_write_device(acpi_device_name(dev)); + + acpigen_write_name_string("_HID", PMC_HID); + acpigen_write_name_string("_DDN", "Intel(R) Tiger Lake IPC Controller"); + + /* + * Part of the PCH's reserved 32 MB MMIO range (0xFC800000 - 0xFE7FFFFF). + * The PMC gets 0xFE000000 - 0xFE00FFFF. + */ + acpigen_write_name("_CRS"); + acpigen_write_resourcetemplate_header(); + acpigen_write_mem32fixed(1, PCH_PWRM_BASE_ADDRESS, PCH_PWRM_BASE_SIZE); + acpigen_write_resourcetemplate_footer(); + + acpigen_pop_len(); /* PMC Device */ + acpigen_pop_len(); /* Scope */ + + printk(BIOS_INFO, "%s: %s at %s\n", acpi_device_path(dev), dev->chip_ops->name, + dev_path(dev)); +} + struct device_operations pmc_ops = { .read_resources = soc_pmc_read_resources, .set_resources = noop_set_resources, .enable = pmc_init, +#if CONFIG(HAVE_ACPI_TABLES) + .acpi_fill_ssdt = soc_pmc_fill_ssdt, +#endif .scan_bus = scan_static_bus, }; |