diff options
| -rw-r--r-- | src/soc/intel/xeon_sp/cpx/include/soc/pci_devs.h | 1 | ||||
| -rw-r--r-- | src/soc/intel/xeon_sp/memmap.c | 47 | ||||
| -rw-r--r-- | src/soc/intel/xeon_sp/skx/include/soc/pci_devs.h | 1 |
3 files changed, 49 insertions, 0 deletions
diff --git a/src/soc/intel/xeon_sp/cpx/include/soc/pci_devs.h b/src/soc/intel/xeon_sp/cpx/include/soc/pci_devs.h index 33e257cb7c..98c47fc5f0 100644 --- a/src/soc/intel/xeon_sp/cpx/include/soc/pci_devs.h +++ b/src/soc/intel/xeon_sp/cpx/include/soc/pci_devs.h @@ -69,6 +69,7 @@ #define VTD_CAP_LOW 0x08 #define VTD_CAP_HIGH 0x0C #define VTD_EXT_CAP_HIGH 0x14 +#define VTD_LTDPR 0x290 /* CPU Devices */ #define CBDMA_DEV_NUM 0x04 diff --git a/src/soc/intel/xeon_sp/memmap.c b/src/soc/intel/xeon_sp/memmap.c index edc62cf881..cd817540b7 100644 --- a/src/soc/intel/xeon_sp/memmap.c +++ b/src/soc/intel/xeon_sp/memmap.c @@ -5,7 +5,10 @@ #include <console/console.h> #include <device/pci_ops.h> #include <cpu/x86/smm.h> +#include <soc/soc_util.h> #include <soc/pci_devs.h> +#include <soc/util.h> +#include <security/intel/txt/txt_platform.h> void smm_region(uintptr_t *start, size_t *size) { @@ -41,3 +44,47 @@ void fill_postcar_frame(struct postcar_frame *pcf) if (CONFIG(TSEG_STAGE_CACHE)) postcar_enable_tseg_cache(pcf); } + +#if !defined(__SIMPLE_DEVICE__) +union dpr_register txt_get_chipset_dpr(void) +{ + const IIO_UDS *hob = get_iio_uds(); + union dpr_register dpr; + struct device *dev = VTD_DEV(0); + + dpr.raw = 0; + + if (dev == NULL) { + printk(BIOS_ERR, "BUS 0: Unable to find VTD PCI dev"); + return dpr; + } + + dpr.raw = pci_read_config32(dev, VTD_LTDPR); + + /* Compare the LTDPR register on all iio stacks */ + for (int socket = 0; socket < hob->PlatformData.numofIIO; ++socket) { + for (int stack = 0; stack < MAX_IIO_STACK; ++stack) { + const STACK_RES *ri = + &hob->PlatformData.IIO_resource[socket].StackRes[stack]; + if (!is_iio_stack_res(ri)) + continue; + uint8_t bus = ri->BusBase; + dev = VTD_DEV(bus); + + if (dev == NULL) { + printk(BIOS_ERR, "BUS %x: Unable to find VTD PCI dev\n", bus); + dpr.raw = 0; + return dpr; + } + + union dpr_register test_dpr = { .raw = pci_read_config32(dev, VTD_LTDPR) }; + if (dpr.raw != test_dpr.raw) { + printk(BIOS_ERR, "LTDPR not the same on all IIO's"); + dpr.raw = 0; + return dpr; + } + } + } + return dpr; +} +#endif diff --git a/src/soc/intel/xeon_sp/skx/include/soc/pci_devs.h b/src/soc/intel/xeon_sp/skx/include/soc/pci_devs.h index 429278c36b..cd5d553755 100644 --- a/src/soc/intel/xeon_sp/skx/include/soc/pci_devs.h +++ b/src/soc/intel/xeon_sp/skx/include/soc/pci_devs.h @@ -93,6 +93,7 @@ #define VTD_CAP_LOW 0x08 #define VTD_CAP_HIGH 0x0C #define VTD_EXT_CAP_HIGH 0x14 +#define VTD_LTDPR 0x290 #define PCU_CR1_C2C3TT_REG 0xdc #define PCU_CR1_PCIE_ILTR_OVRD 0xfc |