diff options
| author | John Zhao <john.zhao@intel.com> | 2020-07-17 11:36:00 -0700 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-07-26 21:43:36 +0000 |
| commit | 7417bb0e5a8bddbf9a56b990119fa3af56e663ac (patch) | |
| tree | 476bd12831a6794a98f8e5727aae0eedca8928c6 /src/soc | |
| parent | ec321094f68d3fbfd13b2514aaa6405b1bcd4886 (diff) | |
soc/intel/tigerlake: Disable VT-d and no DMAR table for pre-QS platform
Enabling VT-d on pre-QS silicon may have issues like rendering the
Thunderbolt driver useless. This change will ensure that VT-d is
disabled for pre-QS silicon and enabled for QS.
BUG=b:152242800,161215918,158519322
TEST=Validated VT-d is disabled for pre-QS (cpu:0x806c0) and enabled for
QS (cpu:0x806c1). Kernel walks through ACPI tables. If VT-d is disabled
and no DMAR table exists, IOMMU will not be enabled.
Signed-off-by: John Zhao <john.zhao@intel.com>
Change-Id: I98a9f6df185002a4e68eaa910f867acd0b96ec2b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43657
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/tigerlake/romstage/fsp_params.c | 40 |
1 files changed, 27 insertions, 13 deletions
diff --git a/src/soc/intel/tigerlake/romstage/fsp_params.c b/src/soc/intel/tigerlake/romstage/fsp_params.c index 662ca06928..4a45fd43ec 100644 --- a/src/soc/intel/tigerlake/romstage/fsp_params.c +++ b/src/soc/intel/tigerlake/romstage/fsp_params.c @@ -5,6 +5,7 @@ #include <cpu/x86/msr.h> #include <fsp/util.h> #include <intelblocks/cpulib.h> +#include <intelblocks/mp_init.h> #include <soc/gpio_soc_defs.h> #include <soc/iomap.h> #include <soc/msr.h> @@ -17,7 +18,7 @@ static void soc_memory_init_params(FSP_M_CONFIG *m_cfg, const struct soc_intel_tigerlake_config *config) { unsigned int i; - uint32_t mask = 0; + uint32_t cpu_id, mask = 0; const struct device *dev; dev = pcidev_path_on_root(SA_DEVFN_IGD); @@ -182,18 +183,31 @@ static void soc_memory_init_params(FSP_M_CONFIG *m_cfg, sizeof(m_cfg->PchHdaAudioLinkSndwEnable)); /* Vt-D config */ - m_cfg->VtdDisable = 0; - m_cfg->VtdIgdEnable = 0x1; - m_cfg->VtdBaseAddress[0] = GFXVT_BASE_ADDRESS; - m_cfg->VtdIpuEnable = 0x1; - m_cfg->VtdBaseAddress[1] = IPUVT_BASE_ADDRESS; - m_cfg->VtdIopEnable = 0x1; - m_cfg->VtdBaseAddress[2] = VTVC0_BASE_ADDRESS; - m_cfg->VtdItbtEnable = 0x1; - m_cfg->VtdBaseAddress[3] = TBT0_BASE_ADDRESS; - m_cfg->VtdBaseAddress[4] = TBT1_BASE_ADDRESS; - m_cfg->VtdBaseAddress[5] = TBT2_BASE_ADDRESS; - m_cfg->VtdBaseAddress[6] = TBT3_BASE_ADDRESS; + cpu_id = cpu_get_cpuid(); + if (cpu_id == CPUID_TIGERLAKE_A0) { + /* Disable VT-d support for pre-QS platform */ + m_cfg->VtdDisable = 1; + } else { + /* Enable VT-d support for QS platform */ + m_cfg->VtdDisable = 0; + m_cfg->VtdIgdEnable = 0x1; + m_cfg->VtdBaseAddress[0] = GFXVT_BASE_ADDRESS; + m_cfg->VtdIpuEnable = 0x1; + m_cfg->VtdBaseAddress[1] = IPUVT_BASE_ADDRESS; + m_cfg->VtdIopEnable = 0x1; + m_cfg->VtdBaseAddress[2] = VTVC0_BASE_ADDRESS; + + if (m_cfg->TcssDma0En || m_cfg->TcssDma1En) + m_cfg->VtdItbtEnable = 0x1; + if (m_cfg->TcssItbtPcie0En) + m_cfg->VtdBaseAddress[3] = TBT0_BASE_ADDRESS; + if (m_cfg->TcssItbtPcie1En) + m_cfg->VtdBaseAddress[4] = TBT1_BASE_ADDRESS; + if (m_cfg->TcssItbtPcie2En) + m_cfg->VtdBaseAddress[5] = TBT2_BASE_ADDRESS; + if (m_cfg->TcssItbtPcie3En) + m_cfg->VtdBaseAddress[6] = TBT3_BASE_ADDRESS; + } /* Change VmxEnable UPD value according to ENABLE_VMX Kconfig */ m_cfg->VmxEnable = CONFIG(ENABLE_VMX); |