diff options
Diffstat (limited to 'src/soc/intel/common/block/systemagent/systemagent.c')
| -rw-r--r-- | src/soc/intel/common/block/systemagent/systemagent.c | 33 |
1 files changed, 21 insertions, 12 deletions
diff --git a/src/soc/intel/common/block/systemagent/systemagent.c b/src/soc/intel/common/block/systemagent/systemagent.c index 07bcb0cc73..51fb0e53da 100644 --- a/src/soc/intel/common/block/systemagent/systemagent.c +++ b/src/soc/intel/common/block/systemagent/systemagent.c @@ -1,5 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0-only */ +#include <acpi/acpigen.h> #include <cbmem.h> #include <console/console.h> #include <cpu/cpu.h> @@ -119,7 +120,7 @@ static const struct sa_mem_map_descriptor sa_memory_map[MAX_MAP_ENTRIES] = { }; /* Read DRAM memory map register value through PCI configuration space */ -static void sa_read_map_entry(struct device *dev, +static void sa_read_map_entry(const struct device *dev, const struct sa_mem_map_descriptor *entry, uint64_t *result) { uint64_t value = 0; @@ -136,17 +137,6 @@ static void sa_read_map_entry(struct device *dev, *result = value; } -/* Fill MMIO resource above 4GB into GNVS */ -void sa_fill_gnvs(struct global_nvs *gnvs) -{ - struct device *sa_dev = pcidev_path_on_root(SA_DEVFN_ROOT); - - sa_read_map_entry(sa_dev, &sa_memory_map[SA_TOUUD_REG], &gnvs->a4gb); - gnvs->a4gs = POWER_OF_2(cpu_phys_address_size()) - gnvs->a4gb; - printk(BIOS_DEBUG, "PCI space above 4GB MMIO is at 0x%llx, len = 0x%llx\n", - gnvs->a4gb, gnvs->a4gs); -} - static void sa_get_mem_map(struct device *dev, uint64_t *values) { int i; @@ -315,6 +305,25 @@ void sa_lock_pam(void) pci_or_config8(dev, PAM0, PAM_LOCK); } +void ssdt_set_above_4g_pci(const struct device *dev) +{ + if (dev->path.type != DEVICE_PATH_DOMAIN) + return; + + uint64_t touud; + sa_read_map_entry(pcidev_path_on_root(SA_DEVFN_ROOT), &sa_memory_map[SA_TOUUD_REG], + &touud); + const uint64_t len = POWER_OF_2(cpu_phys_address_size()) - touud; + + const char *scope = acpi_device_path(dev); + acpigen_write_scope(scope); + acpigen_write_name_qword("A4GB", touud); + acpigen_write_name_qword("A4GS", len); + acpigen_pop_len(); + + printk(BIOS_DEBUG, "PCI space above 4GB MMIO is at 0x%llx, len = 0x%llx\n", touud, len); +} + static struct device_operations systemagent_ops = { .read_resources = systemagent_read_resources, .set_resources = pci_dev_set_resources, |