| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <arch/bert_storage.h> |
| #include <console/console.h> |
| #include <device/pci_ops.h> |
| #include <intelblocks/crashlog.h> |
| #include <intelblocks/pmc_ipc.h> |
| #include <soc/crashlog.h> |
| #include <soc/iomap.h> |
| #include <soc/pci_devs.h> |
| #include <string.h> |
| |
| /* global crashLog info */ |
| static bool m_pmc_crashLog_support; |
| static bool m_pmc_crashLog_present; |
| static bool m_cpu_crashLog_support; |
| static bool m_cpu_crashLog_present; |
| static u32 m_pmc_crashLog_size; |
| static u32 m_cpu_crashLog_size; |
| static u32 cpu_crash_version; |
| static pmc_ipc_discovery_buf_t discovery_buf; |
| static pmc_crashlog_desc_table_t descriptor_table; |
| static tel_crashlog_devsc_cap_t cpu_cl_devsc_cap; |
| static cpu_crashlog_discovery_table_t cpu_cl_disc_tab; |
| |
| u32 __weak cl_get_cpu_mb_int_addr(void) |
| { |
| return CRASHLOG_MAILBOX_INTF_ADDRESS; |
| } |
| |
| bool pmc_cl_discovery(void) |
| { |
| u32 tmp_bar_addr = 0, desc_table_addr = 0; |
| |
| const struct pmc_ipc_buffer req = { 0 }; |
| struct pmc_ipc_buffer res; |
| uint32_t cmd_reg; |
| int r; |
| |
| cmd_reg = pmc_make_ipc_cmd(PMC_IPC_CMD_CRASHLOG, |
| PMC_IPC_CMD_ID_CRASHLOG_DISCOVERY, |
| PMC_IPC_CMD_SIZE_SHIFT); |
| printk(BIOS_DEBUG, "cmd_reg from pmc_make_ipc_cmd %d\n", cmd_reg); |
| |
| r = pmc_send_ipc_cmd(cmd_reg, &req, &res); |
| |
| if (r < 0) { |
| printk(BIOS_ERR, "pmc_send_ipc_cmd failed in %s\n", __func__); |
| return false; |
| } |
| discovery_buf.val_64_bits = ((u64)res.buf[1] << 32) | res.buf[0]; |
| |
| |
| if (discovery_buf.bits.supported != 1) { |
| printk(BIOS_INFO, "PCH crashlog feature not supported.\n"); |
| m_pmc_crashLog_support = false; |
| return false; |
| } |
| m_pmc_crashLog_support = true; |
| |
| /* Program BAR 0 and enable command register memory space decoding */ |
| tmp_bar_addr = SPI_BASE_ADDRESS; |
| pci_write_config32(PCH_DEV_SRAM, PCI_BASE_ADDRESS_0, tmp_bar_addr); |
| pci_or_config16(PCH_DEV_SRAM, PCI_COMMAND, PCI_COMMAND_MEMORY); |
| |
| if (discovery_buf.bits.discov_mechanism == 1) { |
| /* discovery mode */ |
| if (discovery_buf.bits.base_offset & BIT(31)) { |
| printk(BIOS_DEBUG, "PCH discovery to be used is disabled.\n"); |
| m_pmc_crashLog_present = false; |
| m_pmc_crashLog_size = 0; |
| return false; |
| } |
| desc_table_addr = tmp_bar_addr + discovery_buf.bits.desc_tabl_offset; |
| m_pmc_crashLog_size = pmc_cl_gen_descriptor_table(desc_table_addr, |
| &descriptor_table); |
| printk(BIOS_DEBUG, "PMC CrashLog size in discovery mode: 0x%X\n", |
| m_pmc_crashLog_size); |
| } else { |
| /* legacy mode */ |
| if (discovery_buf.bits.dis) { |
| printk(BIOS_DEBUG, "PCH crashlog is disabled in legacy mode.\n"); |
| m_pmc_crashLog_present = false; |
| return false; |
| } |
| m_pmc_crashLog_size = (discovery_buf.bits.size != 0) ? |
| (discovery_buf.bits.size * sizeof(u32)) : 0xC00; |
| printk(BIOS_DEBUG, "PMC crashlog size in legacy mode = 0x%x\n", |
| m_pmc_crashLog_size); |
| } |
| m_pmc_crashLog_present = true; |
| |
| return true; |
| } |
| |
| u32 cl_get_cpu_bar_addr(void) |
| { |
| u32 base_addr = 0; |
| if (cpu_cl_devsc_cap.discovery_data.fields.t_bir_q == TEL_DVSEC_TBIR_BAR0) { |
| base_addr = pci_read_config32(SA_DEV_TMT, PCI_BASE_ADDRESS_0) & |
| ~PCI_BASE_ADDRESS_MEM_ATTR_MASK; |
| } else if (cpu_cl_devsc_cap.discovery_data.fields.t_bir_q == TEL_DVSEC_TBIR_BAR1) { |
| base_addr = pci_read_config32(SA_DEV_TMT, PCI_BASE_ADDRESS_1) & |
| ~PCI_BASE_ADDRESS_MEM_ATTR_MASK; |
| } else { |
| printk(BIOS_ERR, "Invalid TEL_CFG_BAR value %d, discovery failure expected.\n", |
| cpu_cl_devsc_cap.discovery_data.fields.t_bir_q); |
| } |
| |
| return base_addr; |
| } |
| |
| |
| u32 cl_get_cpu_tmp_bar(void) |
| { |
| return SPI_BASE_ADDRESS; |
| } |
| |
| bool cl_pmc_sram_has_mmio_access(void) |
| { |
| if (pci_read_config16(PCH_DEV_SRAM, PCI_VENDOR_ID) == 0xFFFF) { |
| printk(BIOS_ERR, "PMC SSRAM PCI device disabled. Can be enabled in device tree.\n"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static bool cpu_cl_get_capability(tel_crashlog_devsc_cap_t *cl_devsc_cap) |
| { |
| cl_devsc_cap->cap_data.data = pci_read_config32(SA_DEV_TMT, |
| TEL_DVSEC_OFFSET + TEL_DVSEC_PCIE_CAP_ID); |
| if (cl_devsc_cap->cap_data.fields.pcie_cap_id != TELEMETRY_EXTENDED_CAP_ID) { |
| printk(BIOS_DEBUG, "Read ID for Telemetry: 0x%x differs from expected: 0x%x\n", |
| cl_devsc_cap->cap_data.fields.pcie_cap_id, TELEMETRY_EXTENDED_CAP_ID); |
| return false; |
| } |
| |
| /* walk through the entries until crashLog entry */ |
| cl_devsc_cap->devsc_data.data_32[1] = pci_read_config32(SA_DEV_TMT, TEL_DVSEV_ID); |
| int new_offset = 0; |
| while (cl_devsc_cap->devsc_data.fields.devsc_id != CRASHLOG_DVSEC_ID) { |
| if (cl_devsc_cap->cap_data.fields.next_cap_offset == 0 |
| || cl_devsc_cap->cap_data.fields.next_cap_offset == 0xFFFF) { |
| printk(BIOS_DEBUG, "Read invalid pcie_cap_id value: 0x%x\n", |
| cl_devsc_cap->cap_data.fields.pcie_cap_id); |
| return false; |
| } |
| new_offset = cl_devsc_cap->cap_data.fields.next_cap_offset; |
| cl_devsc_cap->cap_data.data = pci_read_config32(SA_DEV_TMT, |
| new_offset + TEL_DVSEC_PCIE_CAP_ID); |
| cl_devsc_cap->devsc_data.data_32[1] = pci_read_config32(SA_DEV_TMT, |
| new_offset + TEL_DVSEV_ID); |
| } |
| cpu_crash_version = cl_devsc_cap->devsc_data.fields.devsc_ver; |
| |
| cl_devsc_cap->discovery_data.data = pci_read_config32(SA_DEV_TMT, new_offset |
| + TEL_DVSEV_DISCOVERY_TABLE_OFFSET); |
| |
| return true; |
| } |
| |
| |
| static bool cpu_cl_gen_discovery_table(void) |
| { |
| u32 bar_addr = 0, disc_tab_addr = 0; |
| bar_addr = cl_get_cpu_bar_addr(); |
| disc_tab_addr = bar_addr + |
| cpu_cl_devsc_cap.discovery_data.fields.discovery_table_offset; |
| memset(&cpu_cl_disc_tab, 0, sizeof(cpu_crashlog_discovery_table_t)); |
| |
| printk(BIOS_DEBUG, "cpu discovery table offset: 0x%x\n", |
| cpu_cl_devsc_cap.discovery_data.fields.discovery_table_offset); |
| |
| cpu_cl_disc_tab.header.data = ((u64)read32((u32 *)disc_tab_addr) + |
| ((u64)read32((u32 *)(disc_tab_addr + 4)) << 32)); |
| |
| cpu_cl_disc_tab.cmd_mailbox.data = read32((u32 *)(disc_tab_addr + 8)); |
| cpu_cl_disc_tab.mailbox_data = read32((u32 *)(disc_tab_addr + 12)); |
| |
| printk(BIOS_DEBUG, "cpu_crashlog_discovery_table buffer count: 0x%x\n", |
| cpu_cl_disc_tab.header.fields.count); |
| |
| int cur_offset = 0; |
| for (int i = 0; i < cpu_cl_disc_tab.header.fields.count; i++) { |
| cur_offset = 16 + 8*i; |
| cpu_cl_disc_tab.buffers[i].data = ((u64)read32((u32 *)(disc_tab_addr + |
| cur_offset)) + ((u64)read32((u32 *) |
| (disc_tab_addr + cur_offset + 4)) << 32)); |
| printk(BIOS_DEBUG, "cpu_crashlog_discovery_table buffer: 0x%x size: " |
| "0x%x offset: 0x%x\n", i, cpu_cl_disc_tab.buffers[i].fields.size, |
| cpu_cl_disc_tab.buffers[i].fields.offset); |
| m_cpu_crashLog_size += cpu_cl_disc_tab.buffers[i].fields.size * sizeof(u32); |
| } |
| |
| m_cpu_crashLog_present = m_cpu_crashLog_size > 0; |
| |
| return true; |
| } |
| |
| bool cpu_cl_discovery(void) |
| { |
| memset(&cpu_cl_devsc_cap, 0, sizeof(tel_crashlog_devsc_cap_t)); |
| |
| if (!cpu_cl_get_capability(&cpu_cl_devsc_cap)) { |
| printk(BIOS_ERR, "CPU crashlog capability not found.\n"); |
| m_cpu_crashLog_support = false; |
| return false; |
| } |
| |
| m_cpu_crashLog_support = true; |
| |
| const struct resource *res = find_resource(SA_DEV_TMT, PCI_BASE_ADDRESS_0); |
| printk(BIOS_DEBUG, "cpu crashlog bar addr: 0x%llX\n", res->base); |
| |
| if (!cpu_cl_gen_discovery_table()) { |
| printk(BIOS_ERR, "CPU crashlog discovery table not valid.\n"); |
| m_cpu_crashLog_present = false; |
| return false; |
| } |
| |
| return true; |
| } |
| |
| void reset_discovery_buffers(void) |
| { |
| memset(&discovery_buf, 0, sizeof(pmc_ipc_discovery_buf_t)); |
| memset(&descriptor_table, 0, sizeof(pmc_crashlog_desc_table_t)); |
| memset(&cpu_cl_devsc_cap, 0, sizeof(tel_crashlog_devsc_cap_t)); |
| } |
| |
| int cl_get_total_data_size(void) |
| { |
| return m_pmc_crashLog_size + m_cpu_crashLog_size; |
| } |
| |
| pmc_ipc_discovery_buf_t cl_get_pmc_discovery_buf(void) |
| { |
| return discovery_buf; |
| } |
| |
| pmc_crashlog_desc_table_t cl_get_pmc_descriptor_table(void) |
| { |
| return descriptor_table; |
| } |
| |
| int cl_get_pmc_record_size(void) |
| { |
| return m_pmc_crashLog_size; |
| } |
| |
| int cl_get_cpu_record_size(void) |
| { |
| return m_cpu_crashLog_size; |
| } |
| |
| bool cl_cpu_data_present(void) |
| { |
| return m_cpu_crashLog_present; |
| } |
| |
| bool cl_pmc_data_present(void) |
| { |
| return m_pmc_crashLog_present; |
| } |
| |
| bool cpu_crashlog_support(void) |
| { |
| return m_cpu_crashLog_support; |
| } |
| |
| bool pmc_crashlog_support(void) |
| { |
| return m_pmc_crashLog_support; |
| } |
| |
| void update_new_pmc_crashlog_size(u32 *pmc_crash_size) |
| { |
| m_pmc_crashLog_size = *pmc_crash_size; |
| } |
| |
| cpu_crashlog_discovery_table_t cl_get_cpu_discovery_table(void) |
| { |
| return cpu_cl_disc_tab; |
| } |
| |
| void update_new_cpu_crashlog_size(u32 *cpu_crash_size) |
| { |
| m_cpu_crashLog_size = *cpu_crash_size; |
| } |