| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <cbfs.h> |
| #include <console/console.h> |
| #include <fsp/util.h> |
| #include <soc/pci_devs.h> |
| #include <soc/pm.h> |
| #include <soc/romstage.h> |
| #include <soc/reg_access.h> |
| |
| static const struct reg_script clear_smi_and_wake_events_script[] = { |
| /* Clear any SMI or wake events */ |
| REG_GPE0_READ(R_QNC_GPE0BLK_GPE0S), |
| REG_GPE0_READ(R_QNC_GPE0BLK_SMIS), |
| REG_GPE0_OR(R_QNC_GPE0BLK_GPE0S, B_QNC_GPE0BLK_GPE0S_ALL), |
| REG_GPE0_OR(R_QNC_GPE0BLK_SMIS, B_QNC_GPE0BLK_SMIS_ALL), |
| REG_SCRIPT_END |
| }; |
| |
| void clear_smi_and_wake_events(void) |
| { |
| struct chipset_power_state *ps; |
| |
| /* Clear SMI and wake events */ |
| ps = get_power_state(); |
| if (ps->prev_sleep_state != 3) { |
| printk(BIOS_SPEW, "Clearing SMI interrupts and wake events\n"); |
| reg_script_run_on_dev(LPC_BDF, |
| clear_smi_and_wake_events_script); |
| } |
| } |
| |
| void disable_rom_shadow(void) |
| { |
| uint32_t data; |
| |
| /* Determine if the shadow ROM is enabled */ |
| data = port_reg_read(QUARK_NC_HOST_BRIDGE_SB_PORT_ID, |
| QNC_MSG_FSBIC_REG_HMISC); |
| if ((data & (ESEG_RD_DRAM | FSEG_RD_DRAM)) |
| != (ESEG_RD_DRAM | FSEG_RD_DRAM)) { |
| |
| /* Disable the ROM shadow 0x000e0000 - 0x000fffff */ |
| data |= ESEG_RD_DRAM | FSEG_RD_DRAM; |
| port_reg_write(QUARK_NC_HOST_BRIDGE_SB_PORT_ID, |
| QNC_MSG_FSBIC_REG_HMISC, data); |
| } |
| } |
| |
| void *locate_rmu_file(size_t *rmu_file_len) |
| { |
| struct cbfsf fh; |
| size_t fsize; |
| void *rmu_data; |
| uint32_t type; |
| |
| /* Locate the rmu.bin file in the read-only region of the flash */ |
| type = CBFS_TYPE_RAW; |
| if (cbfs_locate_file_in_region(&fh, "COREBOOT", "rmu.bin", &type)) |
| return NULL; |
| |
| /* Get the file size */ |
| fsize = region_device_sz(&fh.data); |
| if (rmu_file_len != NULL) |
| *rmu_file_len = fsize; |
| |
| /* Get the data address */ |
| rmu_data = rdev_mmap(&fh.data, 0, fsize); |
| |
| /* Since the SPI flash is directly mapped into memory, we do not need |
| * the mapping provided by the rdev service. Unmap the file to prevent |
| * a memory leak. Return/leak the SPI flash address for the rmu.bin |
| * file data which will be directly accessed by FSP MemoryInit. |
| */ |
| rdev_munmap(&fh.data, rmu_data); |
| return rmu_data; |
| } |