coreboot July 2018

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Re: [coreboot] Error with tiano payload
by Peter Stuge 10 Jul '18

10 Jul '18

Jorge Fernandez Monteagudo wrote: > !!!! X64 Exception Type - 00(#DE - Divide Error) CPU Apic ID - 00000010 !!!! So there is probably a division by zero.. > RIP - 000000008F5D4FCB > !!!! Find PE image /mnt/develop/bettong/coreboot/master/coreboot_tpm2/payloads/external/tianocore/tianocore/Build/CorebootPayloadPkgX64/RELEASE_COREBOOT/X64/CorebootPayloadPkg/FbGop/FbGop/DEBUG/FbGop.dll > (ImageBase=000000008F5D4000, EntryPoint=000000008F5D5F7D) !!!! ..at byte 0xfcb=4043 in FbGop.dll. > When configured with 800x600 32k-color (1:5:5:5) or 800x600 64k-color (5:6:5) > boots ok. Look for assumptions (all assumptions are bad) about frame buffer size or structure in the code. I guess some code tries to compute number of bytes per pixel but doesn't always get correct results. //Peter

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New Defects reported by Coverity Scan for coreboot
by scan-admin＠coverity.com 10 Jul '18

10 Jul '18

Hi, Please find the latest report on new defect(s) introduced to coreboot found with Coverity Scan. 27 new defect(s) introduced to coreboot found with Coverity Scan. New defect(s) Reported-by: Coverity Scan Showing 20 of 27 defect(s) ** CID 1393979: (RESOURCE_LEAK) /src/lib/device_tree.c: 948 in dt_set_bin_prop_by_path() /src/lib/device_tree.c: 959 in dt_set_bin_prop_by_path() /src/lib/device_tree.c: 964 in dt_set_bin_prop_by_path() ________________________________________________________________________________________________________ *** CID 1393979: (RESOURCE_LEAK) /src/lib/device_tree.c: 948 in dt_set_bin_prop_by_path() 942 return 1; 943 } 944 945 prop_name = strrchr(path_copy, '/'); 946 if (!prop_name) { 947 printk(BIOS_ERR, "Path %s does not include '/'\n", path); >>> CID 1393979: (RESOURCE_LEAK) >>> Variable "path_copy" going out of scope leaks the storage it points to. 948 return 1; 949 } 950 951 *prop_name++ = '\0'; /* Separate path from the property name. */ 952 953 dt_node = dt_find_node_by_path(tree->root, path_copy, NULL, /src/lib/device_tree.c: 959 in dt_set_bin_prop_by_path() 953 dt_node = dt_find_node_by_path(tree->root, path_copy, NULL, 954 NULL, create); 955 956 if (!dt_node) { 957 printk(BIOS_ERR, "Failed to %s %s in the device tree\n", 958 create ? "create" : "find", path_copy); >>> CID 1393979: (RESOURCE_LEAK) >>> Variable "path_copy" going out of scope leaks the storage it points to. 959 return 1; 960 } 961 962 dt_add_bin_prop(dt_node, prop_name, data, data_size); 963 964 return 0; /src/lib/device_tree.c: 964 in dt_set_bin_prop_by_path() 958 create ? "create" : "find", path_copy); 959 return 1; 960 } 961 962 dt_add_bin_prop(dt_node, prop_name, data, data_size); 963 >>> CID 1393979: (RESOURCE_LEAK) >>> Variable "path_copy" going out of scope leaks the storage it points to. 964 return 0; 965 } 966 967 /* 968 * Prepare the /reserved-memory/ node. 969 * ** CID 1393978: Null pointer dereferences (FORWARD_NULL) /src/vendorcode/cavium/bdk/libbdk-hal/device/bdk-device.c: 523 in bdk_device_add() ________________________________________________________________________________________________________ *** CID 1393978: Null pointer dereferences (FORWARD_NULL) /src/vendorcode/cavium/bdk/libbdk-hal/device/bdk-device.c: 523 in bdk_device_add() 517 { 518 if (device_list_count == device_list_max) 519 { 520 int grow = device_list_max + DEVICE_GROW; 521 bdk_device_t *tmp = malloc(grow * sizeof(bdk_device_t)); 522 if (!tmp) >>> CID 1393978: Null pointer dereferences (FORWARD_NULL) >>> Passing null pointer "tmp" to "memcpy", which dereferences it. [Note: The source code implementation of the function has been overridden by a builtin model.] 523 memcpy(tmp, device_list, device_list_max * sizeof(bdk_device_t)); 524 free(device_list); 525 if (tmp == NULL) 526 { 527 bdk_error("bdk-device: Failed to allocate space for device\n"); 528 return -1; ** CID 1393977: Integer handling issues (OVERFLOW_BEFORE_WIDEN) /src/soc/cavium/cn81xx/clock.c: 78 in thunderx_get_core_clock() ________________________________________________________________________________________________________ *** CID 1393977: Integer handling issues (OVERFLOW_BEFORE_WIDEN) /src/soc/cavium/cn81xx/clock.c: 78 in thunderx_get_core_clock() 72 u64 thunderx_get_core_clock(void) 73 { 74 union cavm_rst_boot rst_boot; 75 76 rst_boot.u = read64((void *)RST_PF_BAR0); 77 >>> CID 1393977: Integer handling issues (OVERFLOW_BEFORE_WIDEN) >>> Potentially overflowing expression "rst_boot.s.c_mul * 50000000" with type "int" (32 bits, signed) is evaluated using 32-bit arithmetic, and then used in a context that expects an expression of type "u64" (64 bits, unsigned). 78 return rst_boot.s.c_mul * PLL_REF_CLK; ** CID 1393976: Control flow issues (DEADCODE) /src/vendorcode/cavium/bdk/libdram/libdram.c: 185 in bdk_libdram_tune_node() ________________________________________________________________________________________________________ *** CID 1393976: Control flow issues (DEADCODE) /src/vendorcode/cavium/bdk/libdram/libdram.c: 185 in bdk_libdram_tune_node() 179 // disabled by default for now, does not seem to be needed? 180 // Automatically tune the data byte DLL write offsets 181 // allow override of default setting 182 str = getenv("ddr_tune_write_offsets"); 183 str = NULL; 184 if (str) >>> CID 1393976: Control flow issues (DEADCODE) >>> Execution cannot reach the expression "do_dllwo" inside this statement: "do_dllwo = !!strtoul(str, N...". 185 do_dllwo = !!strtoul(str, NULL, 0); 186 if (do_dllwo) { 187 BDK_TRACE(DRAM, "N%d: Starting DLL Write Offset Tuning for LMCs\n", node); 188 errs = perform_dll_offset_tuning(node, /* write */1, /* tune */1); 189 BDK_TRACE(DRAM, "N%d: Finished DLL Write Offset Tuning for LMCs, %d errors)\n", 190 node, errs); ** CID 1393975: Memory - corruptions (OVERRUN) ________________________________________________________________________________________________________ *** CID 1393975: Memory - corruptions (OVERRUN) /src/vendorcode/cavium/bdk/libdram/lib_octeon_shared.c: 595 in test_dram_byte_hw() 589 dbtrain_ctl.s.prank, dbtrain_ctl.s.lrank, 590 dbtrain_ctl.s.bg, dbtrain_ctl.s.ba, row, col); 591 /* 592 4) Kick off the sequence (SEQ_CTL[SEQ_SEL] = 14, SEQ_CTL[INIT_START] = 1). 593 5) Poll on SEQ_CTL[SEQ_COMPLETE] for completion. 594 */ >>> CID 1393975: Memory - corruptions (OVERRUN) >>> Overrunning callee's array of size 12 by passing argument "14" in call to "perform_octeon3_ddr3_sequence". 595 perform_octeon3_ddr3_sequence(node, prank, ddr_interface_num, 14); 596 597 /* 598 6) Read MPR_DATA0 and MPR_DATA1 for results: 599 a. MPR_DATA0[MPR_DATA<63:0>] comparison results for DQ63:DQ0. 600 (1 means MATCH, 0 means FAIL). ** CID 1393974: (OVERFLOW_BEFORE_WIDEN) /src/soc/cavium/cn81xx/gpio.c: 106 in gpio_set() /src/soc/cavium/cn81xx/gpio.c: 108 in gpio_set() ________________________________________________________________________________________________________ *** CID 1393974: (OVERFLOW_BEFORE_WIDEN) /src/soc/cavium/cn81xx/gpio.c: 106 in gpio_set() 100 if (gpio >= gpio_pin_count()) 101 return; 102 103 printk(BIOS_SPEW, "GPIO(%u): level: %u\n", gpio, !!value); 104 105 if (value) >>> CID 1393974: (OVERFLOW_BEFORE_WIDEN) >>> Potentially overflowing expression "1 << gpio" with type "int" (32 bits, signed) is evaluated using 32-bit arithmetic, and then used in a context that expects an expression of type "uint64_t" (64 bits, unsigned). 106 write64(&regs->tx_set, 1 << gpio); 107 else 108 write64(&regs->tx_clr, 1 << gpio); 109 } 110 111 /* Set GPIO direction to OUTPUT with level */ /src/soc/cavium/cn81xx/gpio.c: 108 in gpio_set() 102 103 printk(BIOS_SPEW, "GPIO(%u): level: %u\n", gpio, !!value); 104 105 if (value) 106 write64(&regs->tx_set, 1 << gpio); 107 else >>> CID 1393974: (OVERFLOW_BEFORE_WIDEN) >>> Potentially overflowing expression "1 << gpio" with type "int" (32 bits, signed) is evaluated using 32-bit arithmetic, and then used in a context that expects an expression of type "uint64_t" (64 bits, unsigned). 108 write64(&regs->tx_clr, 1 << gpio); 109 } 110 111 /* Set GPIO direction to OUTPUT with level */ 112 void gpio_output(gpio_t gpio, int value) 113 { ** CID 1393973: (DEADCODE) /src/vendorcode/cavium/bdk/libdram/dram-spd.c: 100 in read_entire_spd() /src/vendorcode/cavium/bdk/libdram/dram-spd.c: 111 in read_entire_spd() /src/vendorcode/cavium/bdk/libdram/dram-spd.c: 119 in read_entire_spd() ________________________________________________________________________________________________________ *** CID 1393973: (DEADCODE) /src/vendorcode/cavium/bdk/libdram/dram-spd.c: 100 in read_entire_spd() 94 uint32_t *ptr = (uint32_t *)spd_buf; 95 96 for (int bank = 0; bank < (spd_size >> 8); bank++) 97 { 98 /* this should only happen for DDR4, which has a second bank of 256 bytes */ 99 if (bank) >>> CID 1393973: (DEADCODE) >>> Execution cannot reach this statement: "bdk_twsix_write_ia(node, bu...". 100 bdk_twsix_write_ia(node, bus, 0x36 | bank, 0, 2, 1, 0); 101 int bank_size = 256; 102 for (int i = 0; i < bank_size; i += 4) 103 { 104 int64_t data = bdk_twsix_read_ia(node, bus, address, i, 4, 1); 105 if (data < 0) /src/vendorcode/cavium/bdk/libdram/dram-spd.c: 111 in read_entire_spd() 105 if (data < 0) 106 { 107 free(spd_buf); 108 bdk_error("Failed to read SPD data at 0x%x\n", i + (bank << 8)); 109 /* Restore the bank to zero */ 110 if (bank) >>> CID 1393973: (DEADCODE) >>> Execution cannot reach this statement: "bdk_twsix_write_ia(node, bu...". 111 bdk_twsix_write_ia(node, bus, 0x36 | 0, 0, 2, 1, 0); 112 return -1; 113 } 114 else 115 *ptr++ = bdk_be32_to_cpu(data); 116 } /src/vendorcode/cavium/bdk/libdram/dram-spd.c: 119 in read_entire_spd() 113 } 114 else 115 *ptr++ = bdk_be32_to_cpu(data); 116 } 117 /* Restore the bank to zero */ 118 if (bank) >>> CID 1393973: (DEADCODE) >>> Execution cannot reach this statement: "bdk_twsix_write_ia(node, bu...". 119 bdk_twsix_write_ia(node, bus, 0x36 | 0, 0, 2, 1, 0); 120 } 121 122 /* Store the SPD in the device tree */ 123 /* FIXME(dhendrix): No need for this? cfg gets updated, so the caller 124 * (libdram_config()) has what it needs. */ ** CID 1393972: Insecure data handling (TAINTED_SCALAR) /src/vendorcode/cavium/bdk/libdram/dram-tune-ddr3.c: 1011 in perform_dll_offset_tuning() ________________________________________________________________________________________________________ *** CID 1393972: Insecure data handling (TAINTED_SCALAR) /src/vendorcode/cavium/bdk/libdram/dram-tune-ddr3.c: 1011 in perform_dll_offset_tuning() 1005 /* Disable l2 sets for DRAM testing */ 1006 limit_l2_ways(node, 0, ways_print); 1007 #endif 1008 1009 // testing is done on all LMCs simultaneously 1010 // FIXME: for now, loop here to show what happens multiple times >>> CID 1393972: Insecure data handling (TAINTED_SCALAR) >>> Using tainted variable "loops" as a loop boundary. 1011 for (loop = 0; loop < loops; loop++) { 1012 /* Perform DLL offset tuning */ 1013 errs = auto_set_dll_offset(node, dll_offset_mode, num_lmcs, ddr_interface_64b, do_tune); 1014 } 1015 1016 #if USE_L2_WAYS_LIMIT ** CID 1393971: Insecure data handling (TAINTED_SCALAR) /src/vendorcode/cavium/bdk/libdram/lib_octeon_shared.c: 1146 in initialize_ddr_clock() ________________________________________________________________________________________________________ *** CID 1393971: Insecure data handling (TAINTED_SCALAR) /src/vendorcode/cavium/bdk/libdram/lib_octeon_shared.c: 1146 in initialize_ddr_clock() 1140 best_en_idx = strtoul(s, NULL, 0); 1141 override_pll_settings = 1; 1142 } 1143 1144 if (override_pll_settings) { 1145 best_pll_MHz = ddr_ref_hertz * (best_clkf+1) / (best_clkr+1) / 1000000; >>> CID 1393971: Insecure data handling (TAINTED_SCALAR) >>> Using tainted variable "best_en_idx" as an index into an array "_en". 1146 best_calculated_ddr_hertz = ddr_ref_hertz * (best_clkf + 1) / ((best_clkr + 1) * (_en[best_en_idx])); 1147 best_error = ddr_hertz - best_calculated_ddr_hertz; 1148 } 1149 1150 ddr_print("clkr: %2llu, en[%d]: %2d, clkf: %4llu, pll_MHz: %4llu, ddr_hertz: %8llu, error: %8lld <==\n", 1151 best_clkr, best_en_idx, _en[best_en_idx], best_clkf, best_pll_MHz, ** CID 1393970: Integer handling issues (DIVIDE_BY_ZERO) /src/vendorcode/cavium/bdk/libbdk-hal/bdk-usb.c: 372 in bdk_usb_initialize() ________________________________________________________________________________________________________ *** CID 1393970: Integer handling issues (DIVIDE_BY_ZERO) /src/vendorcode/cavium/bdk/libbdk-hal/bdk-usb.c: 372 in bdk_usb_initialize() 366 { 367 static bool printit[2] = {true,true}; 368 if (printit[usb_port]) { 369 uint64_t fr_div; 370 if (divider < 5) fr_div = divider * 2; 371 else fr_div = 8 * (divider - 3); >>> CID 1393970: Integer handling issues (DIVIDE_BY_ZERO) >>> In expression "sclk_rate / fr_div", division by expression "fr_div" which may be zero has undefined behavior. 372 uint64_t freq = (typeof(freq)) (sclk_rate / fr_div); 373 const char *token; 374 if (freq < 62500000ULL) token = "???Low"; 375 else if (freq < 90000000ULL) token = "USB2"; 376 else if (freq < 125000000ULL) token = "USB2 Full"; 377 else if (freq < 150000000ULL) token = "USB3"; ** CID 1393969: Possible Control flow issues (DEADCODE) /src/vendorcode/cavium/bdk/libbdk-hal/bdk-qlm.c: 421 in bdk_qlm_eye_display() ________________________________________________________________________________________________________ *** CID 1393969: Possible Control flow issues (DEADCODE) /src/vendorcode/cavium/bdk/libbdk-hal/bdk-qlm.c: 421 in bdk_qlm_eye_display() 415 result = 0; 416 } 417 else 418 result = -1; 419 420 if (need_free) >>> CID 1393969: Possible Control flow issues (DEADCODE) >>> Execution cannot reach this statement: "free((void *)eye);". 421 free((void*)eye); 422 return result; ** CID 1393968: Integer handling issues (OVERFLOW_BEFORE_WIDEN) /src/soc/cavium/cn81xx/clock.c: 66 in thunderx_get_io_clock() ________________________________________________________________________________________________________ *** CID 1393968: Integer handling issues (OVERFLOW_BEFORE_WIDEN) /src/soc/cavium/cn81xx/clock.c: 66 in thunderx_get_io_clock() 60 u64 thunderx_get_io_clock(void) 61 { 62 union cavm_rst_boot rst_boot; 63 64 rst_boot.u = read64((void *)RST_PF_BAR0); 65 >>> CID 1393968: Integer handling issues (OVERFLOW_BEFORE_WIDEN) >>> Potentially overflowing expression "rst_boot.s.pnr_mul * 50000000" with type "int" (32 bits, signed) is evaluated using 32-bit arithmetic, and then used in a context that expects an expression of type "u64" (64 bits, unsigned). 66 return rst_boot.s.pnr_mul * PLL_REF_CLK; 67 } 68 69 /** 70 * Returns the core clock speed in Hz 71 */ ** CID 1393967: Code maintainability issues (UNUSED_VALUE) /src/vendorcode/cavium/bdk/libdram/dram-tune-ddr3.c: 658 in auto_set_dll_offset() ________________________________________________________________________________________________________ *** CID 1393967: Code maintainability issues (UNUSED_VALUE) /src/vendorcode/cavium/bdk/libdram/dram-tune-ddr3.c: 658 in auto_set_dll_offset() 652 } /* for (lmc = 0; lmc < num_lmcs; lmc++) */ 653 654 bdk_watchdog_poke(); 655 656 // run the test(s) 657 // only 1 call should be enough, let the bursts, etc, control the load... >>> CID 1393967: Code maintainability issues (UNUSED_VALUE) >>> Assigning value from "run_dram_tuning_threads(node, num_lmcs, bytemask)" to "tot_errors" here, but that stored value is overwritten before it can be used. 658 tot_errors = run_dram_tuning_threads(node, num_lmcs, bytemask); 659 660 for (lmc = 0; lmc < num_lmcs; lmc++) { 661 // record stop cycle CSRs here for utilization measure 662 stop_dram_dclk[lmc] = BDK_CSR_READ(node, BDK_LMCX_DCLK_CNT(lmc)); 663 stop_dram_ops[lmc] = BDK_CSR_READ(node, BDK_LMCX_OPS_CNT(lmc)); ** CID 1393966: Control flow issues (DEADCODE) /src/soc/cavium/cn81xx/uart.c: 104 in uart_platform_refclk() ________________________________________________________________________________________________________ *** CID 1393966: Control flow issues (DEADCODE) /src/soc/cavium/cn81xx/uart.c: 104 in uart_platform_refclk() 98 unsigned int uart_platform_refclk(void) 99 { 100 struct cn81xx_uart *uart = 101 (struct cn81xx_uart *)CONFIG_CONSOLE_SERIAL_UART_ADDRESS; 102 103 if (!uart) >>> CID 1393966: Control flow issues (DEADCODE) >>> Execution cannot reach this statement: "return 0U;". 104 return 0; 105 106 return uart_hclk(uart); 107 } 108 109 uintptr_t uart_platform_base(int idx) ** CID 1393965: Control flow issues (DEADCODE) /src/vendorcode/cavium/bdk/libdram/lib_octeon_shared.c: 1880 in dbi_switchover_interface() ________________________________________________________________________________________________________ *** CID 1393965: Control flow issues (DEADCODE) /src/vendorcode/cavium/bdk/libdram/lib_octeon_shared.c: 1880 in dbi_switchover_interface() 1874 for (byte = 0; byte < (8+ecc_ena); byte++) { 1875 unlocked += (dbi_settings[byte] & 1) ^ 1; 1876 } 1877 1878 // FIXME: print out the DBI settings array after each rank? 1879 if (rank_max > 1) // only when doing more than 1 rank >>> CID 1393965: Control flow issues (DEADCODE) >>> Execution cannot reach this statement: "display_DAC_DBI_settings(no...". 1880 display_DAC_DBI_settings(node, lmc, /* DBI */0, ecc_ena, dbi_settings, " RANK"); 1881 1882 if (unlocked > 0) { 1883 ddr_print("N%d.LMC%d: DBI switchover: LOCK: %d still unlocked.\n", 1884 node, lmc, unlocked); 1885 ** CID 1393964: (TAINTED_SCALAR) ________________________________________________________________________________________________________ *** CID 1393964: (TAINTED_SCALAR) /src/vendorcode/cavium/bdk/libdram/lib_octeon_shared.c: 682 in perform_ddr_init_sequence() 676 677 bdk_wait_usec(1000); /* Wait a while. */ 678 679 if ((s = lookup_env_parameter("ddr_sequence1")) != NULL) { 680 int sequence1; 681 sequence1 = strtoul(s, NULL, 0); >>> CID 1393964: (TAINTED_SCALAR) >>> Passing tainted variable "sequence1" to a tainted sink. 682 perform_octeon3_ddr3_sequence(node, (1 << rankx), 683 ddr_interface_num, sequence1); 684 } 685 686 if ((s = lookup_env_parameter("ddr_sequence2")) != NULL) { 687 int sequence2; /src/vendorcode/cavium/bdk/libdram/lib_octeon_shared.c: 689 in perform_ddr_init_sequence() 683 ddr_interface_num, sequence1); 684 } 685 686 if ((s = lookup_env_parameter("ddr_sequence2")) != NULL) { 687 int sequence2; 688 sequence2 = strtoul(s, NULL, 0); >>> CID 1393964: (TAINTED_SCALAR) >>> Passing tainted variable "sequence2" to a tainted sink. 689 perform_octeon3_ddr3_sequence(node, (1 << rankx), 690 ddr_interface_num, sequence2); 691 } 692 } 693 } 694 } ** CID 1393963: Uninitialized variables (UNINIT) /src/vendorcode/cavium/bdk/libdram/dram-spd.c: 570 in dram_get_default_spd_speed() ________________________________________________________________________________________________________ *** CID 1393963: Uninitialized variables (UNINIT) /src/vendorcode/cavium/bdk/libdram/dram-spd.c: 570 in dram_get_default_spd_speed() 564 dimms_per_lmc++; 565 } 566 } 567 } 568 569 // all DIMMs must be same speed >>> CID 1393963: Uninitialized variables (UNINIT) >>> Using uninitialized value "dimm_speed[0]". 570 speed = dimm_speed[0]; 571 for (dimm = 1; dimm < dimm_count; dimm++) { 572 if (dimm_speed[dimm] != speed) { 573 ret_speed = -1; 574 goto finish_up; 575 } ** CID 1393962: Null pointer dereferences (FORWARD_NULL) ________________________________________________________________________________________________________ *** CID 1393962: Null pointer dereferences (FORWARD_NULL) /src/vendorcode/cavium/bdk/libbdk-dram/bdk-dram-test-addrbus.c: 64 in __bdk_dram_test_mem_address_bus() 58 { 59 int failures = 0; 60 61 /* Clear our work area. Checking for aliases later could get false 62 positives if it matched stale data */ 63 void *ptr = (area) ? bdk_phys_to_ptr(area) : NULL; >>> CID 1393962: Null pointer dereferences (FORWARD_NULL) >>> Passing null pointer "ptr" to "bdk_zero_memory", which dereferences it. 64 bdk_zero_memory(ptr, max_address - area); 65 __bdk_dram_flush_to_mem_range(area, max_address); 66 67 /* Each time we write, we'll write this pattern xored the address it is 68 written too */ 69 uint64_t pattern = 0x0fedcba987654321; ** CID 1393961: (INTEGER_OVERFLOW) /src/vendorcode/cavium/bdk/libdram/lib_octeon_shared.c: 175 in init_octeon_dram_interface() ________________________________________________________________________________________________________ *** CID 1393961: (INTEGER_OVERFLOW) /src/vendorcode/cavium/bdk/libdram/lib_octeon_shared.c: 175 in init_octeon_dram_interface() 169 bdk_reset_chip(node); 170 } 171 } 172 173 printf("N%d.LMC%d Configuration Completed: %d MB\n", 174 node, ddr_interface_num, mem_size_mbytes); >>> CID 1393961: (INTEGER_OVERFLOW) >>> Overflowed or truncated value (or a value computed from an overflowed or truncated value) "mem_size_mbytes" used as return value. 175 return mem_size_mbytes; 176 } 177 178 #define DO_LIKE_RANDOM_XOR 1 179 180 #if !DO_LIKE_RANDOM_XOR /src/vendorcode/cavium/bdk/libdram/lib_octeon_shared.c: 145 in init_octeon_dram_interface() 139 140 restart_lmc_init: 141 142 /* Poke the watchdog timer so it doesn't expire during DRAM init */ 143 bdk_watchdog_poke(); 144 >>> CID 1393961: (INTEGER_OVERFLOW) >>> Overflowed or truncated value (or a value computed from an overflowed or truncated value) "ddr_hertz" used as critical argument to function. 145 mem_size_mbytes = init_octeon3_ddr3_interface(node, 146 ddr_configuration, 147 ddr_hertz, 148 cpu_hertz, 149 ddr_ref_hertz, 150 board_type, ** CID 1393960: Insecure data handling (TAINTED_SCALAR) /src/vendorcode/cavium/bdk/libdram/dram-tune-ddr3.c: 1490 in perform_HW_dll_offset_tuning() ________________________________________________________________________________________________________ *** CID 1393960: Insecure data handling (TAINTED_SCALAR) /src/vendorcode/cavium/bdk/libdram/dram-tune-ddr3.c: 1490 in perform_HW_dll_offset_tuning() 1484 lmc_config.s.ecc_ena = 1; 1485 DRAM_CSR_WRITE(node, BDK_LMCX_CONFIG(lmc), lmc_config.u); 1486 lmc_config.u = BDK_CSR_READ(node, BDK_LMCX_CONFIG(lmc)); 1487 1488 // testing is done on a single LMC at a time 1489 // FIXME: for now, loop here to show what happens multiple times >>> CID 1393960: Insecure data handling (TAINTED_SCALAR) >>> Using tainted variable "loops" as a loop boundary. 1490 for (loop = 0; loop < loops; loop++) { 1491 /* Perform DLL offset tuning */ 1492 //auto_set_dll_offset(node, 1 /* 1=write */, lmc, bytelane); 1493 hw_assist_test_dll_offset(node, 2 /* 2=read */, lmc, bytelane); 1494 } 1495 ________________________________________________________________________________________________________ To view the defects in Coverity Scan visit, https://u2389337.ct.sendgrid.net/wf/click?upn=08onrYu34A-2BWcWUl-2F-2BfV0V0…

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Error with tiano payload
by Jorge Fernandez Monteagudo 10 Jul '18

10 Jul '18

Hi, I get the next traces when I try to boot a coreboot rom with tiano payload. I've configured framebuffer graphics resolution (800x600 16.8M-color (8:8:8)) Jumping to boot code at 00800800(8fe0e000) CPU0: stack: 8ff1f000 - 8ff20000, lowest used address 8ff1f5d0, stack used: 2608 bytes !!!! X64 Exception Type - 00(#DE - Divide Error) CPU Apic ID - 00000010 !!!! RIP - 000000008F5D4FCB, CS - 0000000000000038, RFLAGS - 0000000000010256 RAX - 0000000000000000, RCX - 000000008F598818, RDX - 0000000000000000 RBX - 000000008F59A418, RSP - 000000008FDAC560, RBP - 000000008FDAC6C8 RSI - 0000000000000000, RDI - 0000000000000024 R8 - 0000000000000000, R9 - 000000008F59A45F, R10 - 00000000000000AC R11 - 000000008F598270, R12 - 000000008F59A2B0, R13 - 000000008F820C90 R14 - 0000000000000000, R15 - 0000000000000001 DS - 0000000000000030, ES - 0000000000000030, FS - 0000000000000030 GS - 0000000000000030, SS - 0000000000000030 CR0 - 0000000080000011, CR2 - 0000000000000000, CR3 - 000000008FB8C000 CR4 - 0000000000000628, CR8 - 0000000000000000 DR0 - 0000000000000000, DR1 - 0000000000000000, DR2 - 0000000000000000 DR3 - 0000000000000000, DR6 - 00000000FFFF0FF0, DR7 - 0000000000000400 GDTR - 000000008FB79718 0000000000000047, LDTR - 0000000000000000 IDTR - 000000008F90D018 0000000000000FFF, TR - 0000000000000000 FXSAVE_STATE - 000000008FDAC1C0 !!!! Find PE image /mnt/develop/bettong/coreboot/master/coreboot_tpm2/payloads/external/tianocore/tianocore/Build/CorebootPayloadPkgX64/RELEASE_COREBOOT/X64/CorebootPayloadPkg/FbGop/FbGop/DEBUG/FbGop.dll (ImageBase=000000008F5D4000, EntryPoint=000000008F5D5F7D) !!!! When configured with 800x600 32k-color (1:5:5:5) or 800x600 64k-color (5:6:5) I get Jumping to boot code at 00800800(8fe0e000) CPU0: stack: 8ff1f000 - 8ff20000, lowest used address 8ff1f5d0, stack used: 2608 bytes and boots ok. The graphic console is corrupted until the Xorg is running but the board boots... Any hint is welcome! Regards Jorge

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Seabios support in Coreboot
by Dhanasekar Jaganathan 09 Jul '18

09 Jul '18

Hi All, After including Seabios as a primary bootloader in coreboot, what are the other option, I suppose to set / enable in core boot menuconfig. Because, Seabios is not installing OS from USB and I am unable to enter into seabios Boot menu (after pressing ESC). Please help me on this. Thanks, Dhanasekar

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Re: [coreboot] Broadwell-DE hang in coreboot: mp_init.c
by Jay Talbott 04 Jul '18

04 Jul '18

I've seen this as well on a 12-core Broadwell-DE. I got a few breadcrumbs from a colleague at Intel suggesting that it was some sort of race condition with the ME that I now am questioning and thinking really just steered us off course of finding the actual root cause of the problem since the changes we tried to make along that train of thinking didn't help at all. So after stumbling onto this discussion from February, I'm interested in any new ideas... So, other than the change below, which impacts all platforms, not just Broadwell-DE, has anybody come up with a better fix to this problem, or an understanding of why it only impacts Broadwell-DE, and yet isn't a problem on the Intel Camelback Mountain reference board? Since it's not reproducible on the Intel reference board, we can't get much support out of Intel on this one... Thanks, - Jay Jay Talbott Principal Consulting Engineer SysPro Consulting, LLC 3057 E. Muirfield St. Gilbert, AZ 85298 (480) 704-8045 (480) 445-9895 (FAX) JayTalbott(a)sysproconsulting.com http://www.sysproconsulting.com > -----Original Message----- > From: coreboot [mailto:coreboot-bounces@coreboot.org] On Behalf Of Zeh, > Werner > Sent: Monday, February 26, 2018 11:12 PM > To: coreboot(a)coreboot.org > Cc: mark pleso > Subject: Re: [coreboot] Broadwell-DE hang in coreboot: mp_init.c > > Hi Mark. > > I saw a very similar issue (similar because I have not analyzed it in detail due > to missing time) with a 6 core Broadwell-DE. It hangs as well in SMM > relocation. > Same mainboard and coreboot binary with a 4 core Broadwell-DE does not > have this effect. > > Werner > > >Von: coreboot [mailto:coreboot-bounces@coreboot.org] Im Auftrag von > mark pleso via coreboot > >Gesendet: Montag, 26. Februar 2018 23:40 > >An: coreboot(a)coreboot.org > >Betreff: [coreboot] Broadwell-DE hang in coreboot: mp_init.c > > > >Has anyone else seen a hang during coreboot booting on a Broadwell- > DE? The issue appears to be in mp_init.c, in the function > smm_do_relocation(). This is coreboot 4.7, but I think the issue exists in 4.6 > >as well. > > > >Enabling the printk will stop the hang. Or, just adding a wbinvd() instruction > will stop the hang, and things proceed normally. Code is below. > > > >Any help would be appreciated. > > > >btw - This not a commercial motherboard. > > > >coreboot/src/cpu/x86/mp_init.c > >static void asmlinkage smm_do_relocation(void *arg) > >{ > > const struct smm_module_params *p; > > const struct smm_runtime *runtime; > > int cpu; > > uintptr_t curr_smbase; > > uintptr_t perm_smbase; > > > > p = arg; > > runtime = p->runtime; > > cpu = p->cpu; > > curr_smbase = runtime->smbase; > > > > if (cpu >= CONFIG_MAX_CPUS) { > > printk(BIOS_CRIT, > > "Invalid CPU number assigned in SMM stub: %d\n", cpu); > > return; > > } > > > > /* > > * The permanent handler runs with all cpus concurrently. Precalculate > > * the location of the new SMBASE. If using SMM modules then this > > * calculation needs to match that of the module loader. > > */ > > perm_smbase = mp_state.perm_smbase; > > perm_smbase -= cpu * runtime->save_state_size; > > > > printk(BIOS_DEBUG, "New SMBASE 0x%08lx\n", perm_smbase); > > > > /* write cache to DRAM before calling relocation handler */ /* will stop > hang */ > > wbinvd(); /* <<=== OR NEW INSTRUCTION w/o printk STOPS HANG */ > > > > /* Setup code checks this callback for validity. */ > > mp_state.ops.relocation_handler(cpu, curr_smbase, perm_smbase); > >} > > -- > coreboot mailing list: coreboot(a)coreboot.org > https://mail.coreboot.org/mailman/listinfo/coreboot

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coreboot support on Qotom Q355G4 Intel Broadwell-U
by Lil Evil 03 Jul '18

03 Jul '18

1 0

Fw:Re: I want to submit some code, but there are someproblems.
by 王翔 03 Jul '18

03 Jul '18

>On Tue, Jul 03, 2018 at 04:23:07PM +0800, 王翔 wrote: >> I want submit some code to support temporarily block multiple-threads. > >But this code can't pass check by `checkpatch`. >What is the error that checkpatch prints out? >If you can't see it, try running > util/lint/checkpatch.pl -f src/path/to/your/file.h >directly. >Hope that helps, >Jonathan Neuschäfer Error print like this: ``` WARNING: Macros with flow control statements should be avoided #43: FILE: src/arch/riscv/include/smp.h:43: +#define SMP_PAUSE(active) do \ +{ \ + __label__ l_entry, l_exit; \ + static int _flag_; \ + if (active == read_csr(mhartid)) \ + goto l_entry; \ + do {barrier(); } while (!_flag_); \ + goto l_exit; \ +l_entry: WARNING: please, no spaces at the start of a line #45: FILE: src/arch/riscv/include/smp.h:45: + __label__ l_entry, l_exit; \$ WARNING: please, no spaces at the start of a line #46: FILE: src/arch/riscv/include/smp.h:46: + static int _flag_; \$ WARNING: please, no spaces at the start of a line #47: FILE: src/arch/riscv/include/smp.h:47: + if (active == read_csr(mhartid)) \$ ERROR: code indent should use tabs where possible #48: FILE: src/arch/riscv/include/smp.h:48: + goto l_entry; \$ WARNING: please, no spaces at the start of a line #48: FILE: src/arch/riscv/include/smp.h:48: + goto l_entry; \$ WARNING: please, no spaces at the start of a line #49: FILE: src/arch/riscv/include/smp.h:49: + do {barrier(); } while (!_flag_); \$ WARNING: please, no spaces at the start of a line #50: FILE: src/arch/riscv/include/smp.h:50: + goto l_exit; \$ ERROR: Macros with multiple statements should be enclosed in a do - while loop #54: FILE: src/arch/riscv/include/smp.h:54: +#define SMP_RESUME() \ + _flag_ = 1; \ +l_exit: \ + barrier(); \ +} while (0) WARNING: please, no spaces at the start of a line #55: FILE: src/arch/riscv/include/smp.h:55: + _flag_ = 1; \$ WARNING: please, no spaces at the start of a line #57: FILE: src/arch/riscv/include/smp.h:57: + barrier(); \$ total: 2 errors, 9 warnings, 65 lines checked ```

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Re: [coreboot] gRT->SetVariable ACCESS DENIED error
by Trammell Hudson 03 Jul '18

03 Jul '18

On July 3, 2018 5:23 AM, Toan Le manh <lemanhtoantb(a)gmail.com> wrote: > I'm facing the Status EFI_ACCESS_DENIED when using gRT->SetVariable() method. > > There is no description of this returned status forSetVariable() in UEFI spec. It looks like the SmmVariableHandler can return EFI_ACCESS_DENIED, even though it is not declared in the documentation comment. There are some pre-condition reasons (empty variable name, too long of a buffer, etc) as well as things like attempting to access a boot time variable after end of DXE: https://github.com/tianocore/edk2/blob/master/MdeModulePkg/Universal/Variab… -- Trammell

1 0

gRT->SetVariable ACCESS DENIED error
by Toan Le manh 03 Jul '18

03 Jul '18

Dear all, I'm facing the Status EFI_ACCESS_DENIED when using gRT->SetVariable() method. There is no description of this returned status for SetVariable() in UEFI spec. Have you ever faced this type of error? Could you please give me any idea on how this happen? Sorry for any inconvenience. Thanks & Best Regards, Toan

1 0

I want to submit some code, but there are some problems.
by 王翔 03 Jul '18

03 Jul '18

I want submit some code to support temporarily block multiple-threads. But this code can't pass check by `checkpatch`. This code look like this: ``` #define barrier() {asm volatile ("fence" ::: "memory"); } /* * If your code needs to temporarily block multiple-threads, do this: * SMP_PAUSE(active) // `active` is hartid of working thread * ... single-threaded work ... * SMP_RESUME() * ... multi-threaded work ... */ #define SMP_PAUSE(active) do \ { \ __label__ l_entry, l_exit; \ static int _flag_; \ if (active == read_csr(mhartid)) \ goto l_entry; \ do {barrier(); } while (!_flag_); \ goto l_exit; \ l_entry: #define SMP_RESUME() \ _flag_ = 1; \ l_exit: \ barrier(); \ } while (0) ``` Xiang Wang

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