diff options
Diffstat (limited to 'src/soc/intel/meteorlake/chip.c')
| -rw-r--r-- | src/soc/intel/meteorlake/chip.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/soc/intel/meteorlake/chip.c b/src/soc/intel/meteorlake/chip.c index 60f85ba983..1f7eab81ea 100644 --- a/src/soc/intel/meteorlake/chip.c +++ b/src/soc/intel/meteorlake/chip.c @@ -7,6 +7,7 @@ #include <gpio.h> #include <intelblocks/acpi.h> #include <intelblocks/cfg.h> +#include <intelblocks/cse.h> #include <intelblocks/irq.h> #include <intelblocks/itss.h> #include <intelblocks/p2sb.h> @@ -151,6 +152,22 @@ void soc_init_pre_device(void *chip_info) /* Swap enabled PCI ports in device tree if needed. */ pcie_rp_update_devicetree(get_pcie_rp_table()); + + /* + * Earlier when coreboot used to send EOP at late as possible caused + * issue of delayed response from CSE since CSE was busy loading payload. + * To resolve the issue, EOP should be sent earlier than current sequence + * in the boot sequence at BS_DEV_INIT. + * + * Intel CSE team recommends to send EOP close to FW init (between FSP-S + * exit and current boot sequence) to reduce message response time from + * CSE hence moving sending EOP to earlier stage. + */ + if (CONFIG(SOC_INTEL_CSE_SEND_EOP_EARLY) || + CONFIG(SOC_INTEL_CSE_SEND_EOP_ASYNC)) { + printk(BIOS_INFO, "Sending EOP early from SoC\n"); + cse_send_end_of_post(); + } } static void cpu_fill_ssdt(const struct device *dev) |