diff options
Diffstat (limited to 'src/soc/amd/common')
| -rw-r--r-- | src/soc/amd/common/block/data_fabric/Kconfig | 8 | ||||
| -rw-r--r-- | src/soc/amd/common/block/data_fabric/Makefile.mk | 1 | ||||
| -rw-r--r-- | src/soc/amd/common/block/data_fabric/np_region.c | 119 | ||||
| -rw-r--r-- | src/soc/amd/common/block/include/amdblocks/data_fabric.h | 1 |
4 files changed, 0 insertions, 129 deletions
diff --git a/src/soc/amd/common/block/data_fabric/Kconfig b/src/soc/amd/common/block/data_fabric/Kconfig index da35daecd8..add2374b18 100644 --- a/src/soc/amd/common/block/data_fabric/Kconfig +++ b/src/soc/amd/common/block/data_fabric/Kconfig @@ -4,14 +4,6 @@ config SOC_AMD_COMMON_BLOCK_DATA_FABRIC Select this option to add data fabric configuration related functionality to the build. -config SOC_AMD_COMMON_BLOCK_DATA_FABRIC_NP_REGION - bool - depends on SOC_AMD_COMMON_BLOCK_DATA_FABRIC - help - Select this option to include the code to make sure that there's a - non-posted MMIO region configured in the data fabric registers that - covers the FCH MMIO from the HPET up to right below the LAPIC. - config SOC_AMD_COMMON_BLOCK_DATA_FABRIC_DOMAIN bool depends on SOC_AMD_COMMON_BLOCK_DATA_FABRIC diff --git a/src/soc/amd/common/block/data_fabric/Makefile.mk b/src/soc/amd/common/block/data_fabric/Makefile.mk index b0684f4e75..55a4d3f311 100644 --- a/src/soc/amd/common/block/data_fabric/Makefile.mk +++ b/src/soc/amd/common/block/data_fabric/Makefile.mk @@ -2,7 +2,6 @@ ramstage-$(CONFIG_SOC_AMD_COMMON_BLOCK_DATA_FABRIC) += data_fabric_helper.c ramstage-$(CONFIG_SOC_AMD_COMMON_BLOCK_DATA_FABRIC_DOMAIN) += domain.c -ramstage-$(CONFIG_SOC_AMD_COMMON_BLOCK_DATA_FABRIC_NP_REGION) += np_region.c ifeq ($(CONFIG_SOC_AMD_COMMON_BLOCK_DATA_FABRIC_MULTI_PCI_SEGMENT),y) ramstage-$(CONFIG_SOC_AMD_COMMON_BLOCK_DATA_FABRIC_DOMAIN) += pci_segment_multi.c diff --git a/src/soc/amd/common/block/data_fabric/np_region.c b/src/soc/amd/common/block/data_fabric/np_region.c deleted file mode 100644 index dd82e5ebcc..0000000000 --- a/src/soc/amd/common/block/data_fabric/np_region.c +++ /dev/null @@ -1,119 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ - -#include <amdblocks/data_fabric.h> -#include <arch/hpet.h> -#include <console/console.h> -#include <cpu/x86/lapic_def.h> -#include <soc/data_fabric.h> -#include <types.h> - -static void data_fabric_disable_mmio_reg(unsigned int reg) -{ - union df_mmio_control ctrl = { .dst_fabric_id = IOMS0_FABRIC_ID }; - data_fabric_broadcast_write32(DF_MMIO_CONTROL(reg), ctrl.raw); - data_fabric_broadcast_write32(DF_MMIO_BASE(reg), 0); - data_fabric_broadcast_write32(DF_MMIO_LIMIT(reg), 0); -} - -static bool is_mmio_reg_disabled(unsigned int reg) -{ - union df_mmio_control ctrl; - ctrl.raw = data_fabric_broadcast_read32(DF_MMIO_CONTROL(reg)); - return !(ctrl.we || ctrl.re); -} - -static int data_fabric_find_unused_mmio_reg(void) -{ - for (unsigned int i = 0; i < DF_MMIO_REG_SET_COUNT; i++) { - if (is_mmio_reg_disabled(i)) - return i; - } - return -1; -} - -void data_fabric_set_mmio_np(void) -{ - /* - * Mark region from HPET-LAPIC or 0xfed00000-0xfee00000-1 as NP. - * - * AGESA has already programmed the NB MMIO routing, however nothing - * is yet marked as non-posted. - * - * If there exists an overlapping routing base/limit pair, trim its - * base or limit to avoid the new NP region. If any pair exists - * completely within HPET-LAPIC range, remove it. If any pair surrounds - * HPET-LAPIC, it must be split into two regions. - * - * TODO(b/156296146): Remove the settings from AGESA and allow coreboot - * to own everything. If not practical, consider erasing all settings - * and have coreboot reprogram them. At that time, make the source - * below more flexible. - * * Note that the code relies on the granularity of the HPET and - * LAPIC addresses being sufficiently large that the shifted limits - * +/-1 are always equivalent to the non-shifted values +/-1. - */ - - unsigned int i; - int reg; - uint32_t base, limit; - union df_mmio_control ctrl; - const uint32_t np_bot = HPET_BASE_ADDRESS >> DF_MMIO_SHIFT; - const uint32_t np_top = (LAPIC_DEFAULT_BASE - 1) >> DF_MMIO_SHIFT; - - data_fabric_print_mmio_conf(); - - for (i = 0; i < DF_MMIO_REG_SET_COUNT; i++) { - /* Adjust all registers that overlap */ - ctrl.raw = data_fabric_broadcast_read32(DF_MMIO_CONTROL(i)); - if (!(ctrl.we || ctrl.re)) - continue; /* not enabled */ - - base = data_fabric_broadcast_read32(DF_MMIO_BASE(i)); - limit = data_fabric_broadcast_read32(DF_MMIO_LIMIT(i)); - - if (base > np_top || limit < np_bot) - continue; /* no overlap at all */ - - if (base >= np_bot && limit <= np_top) { - data_fabric_disable_mmio_reg(i); /* 100% within, so remove */ - continue; - } - - if (base < np_bot && limit > np_top) { - /* Split the configured region */ - data_fabric_broadcast_write32(DF_MMIO_LIMIT(i), np_bot - 1); - reg = data_fabric_find_unused_mmio_reg(); - if (reg < 0) { - /* Although a pair could be freed later, this condition is - * very unusual and deserves analysis. Flag an error and - * leave the topmost part unconfigured. */ - printk(BIOS_ERR, "Not enough NB MMIO routing registers\n"); - continue; - } - data_fabric_broadcast_write32(DF_MMIO_BASE(reg), np_top + 1); - data_fabric_broadcast_write32(DF_MMIO_LIMIT(reg), limit); - data_fabric_broadcast_write32(DF_MMIO_CONTROL(reg), ctrl.raw); - continue; - } - - /* If still here, adjust only the base or limit */ - if (base <= np_bot) - data_fabric_broadcast_write32(DF_MMIO_LIMIT(i), np_bot - 1); - else - data_fabric_broadcast_write32(DF_MMIO_BASE(i), np_top + 1); - } - - reg = data_fabric_find_unused_mmio_reg(); - if (reg < 0) { - printk(BIOS_ERR, "cannot configure region as NP\n"); - return; - } - - union df_mmio_control np_ctrl = { .dst_fabric_id = IOMS0_FABRIC_ID, - .np = 1, .we = 1, .re = 1 }; - data_fabric_broadcast_write32(DF_MMIO_BASE(reg), np_bot); - data_fabric_broadcast_write32(DF_MMIO_LIMIT(reg), np_top); - data_fabric_broadcast_write32(DF_MMIO_CONTROL(reg), np_ctrl.raw); - - data_fabric_print_mmio_conf(); -} diff --git a/src/soc/amd/common/block/include/amdblocks/data_fabric.h b/src/soc/amd/common/block/include/amdblocks/data_fabric.h index 9dbf5dac35..f0073dfb4e 100644 --- a/src/soc/amd/common/block/include/amdblocks/data_fabric.h +++ b/src/soc/amd/common/block/include/amdblocks/data_fabric.h @@ -44,7 +44,6 @@ void data_fabric_broadcast_write32(uint16_t fn_reg, uint32_t data) } void data_fabric_print_mmio_conf(void); -void data_fabric_set_mmio_np(void); enum cb_err data_fabric_get_pci_bus_numbers(struct device *domain, uint8_t *segment_group, uint8_t *first_bus, uint8_t *last_bus); |