diff options
Diffstat (limited to 'common/peci.c')
| -rw-r--r-- | common/peci.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/common/peci.c b/common/peci.c deleted file mode 100644 index e0f03c95dd..0000000000 --- a/common/peci.c +++ /dev/null @@ -1,165 +0,0 @@ -/* Copyright 2019 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -/* PECI interface for Chrome EC */ - -#include "chipset.h" -#include "console.h" -#include "peci.h" -#include "util.h" - -static int peci_get_cpu_temp(int *cpu_temp) -{ - int rv; - uint8_t r_buf[PECI_GET_TEMP_READ_LENGTH] = {0}; - struct peci_data peci = { - .cmd_code = PECI_CMD_GET_TEMP, - .addr = PECI_TARGET_ADDRESS, - .w_len = PECI_GET_TEMP_WRITE_LENGTH, - .r_len = PECI_GET_TEMP_READ_LENGTH, - .w_buf = NULL, - .r_buf = r_buf, - .timeout_us = PECI_GET_TEMP_TIMEOUT_US, - }; - - rv = peci_transaction(&peci); - if (rv) - return rv; - - /* Get relative raw data of temperature. */ - *cpu_temp = (r_buf[1] << 8) | r_buf[0]; - - /* Convert relative raw data to degrees C. */ - *cpu_temp = ((*cpu_temp ^ 0xFFFF) + 1) >> 6; - - /* - * When the AP transitions into S0, it is possible, depending on the - * timing of the PECI sample, to read an invalid temperature. This is - * very rare, but when it does happen the temperature returned is - * greater than or equal to CONFIG_PECI_TJMAX. - */ - if (*cpu_temp >= CONFIG_PECI_TJMAX) - return EC_ERROR_UNKNOWN; - - /* temperature in K */ - *cpu_temp = CONFIG_PECI_TJMAX - *cpu_temp + 273; - - return EC_SUCCESS; -} - -int peci_temp_sensor_get_val(int idx, int *temp_ptr) -{ - int i, rv; - - if (!chipset_in_state(CHIPSET_STATE_ON | CHIPSET_STATE_STANDBY)) - return EC_ERROR_NOT_POWERED; - - /* - * Retry reading PECI CPU temperature if the first sample is - * invalid or failed to obtain. - */ - for (i = 0; i < 2; i++) { - rv = peci_get_cpu_temp(temp_ptr); - if (!rv) - break; - } - - return rv; -} - -/*****************************************************************************/ -/* Console commands */ -#ifdef CONFIG_CMD_PECI -static int peci_cmd(int argc, char **argv) -{ - uint8_t r_buf[PECI_READ_DATA_FIFO_SIZE] = {0}; - uint8_t w_buf[PECI_WRITE_DATA_FIFO_SIZE] = {0}; - struct peci_data peci = { - .w_buf = w_buf, - .r_buf = r_buf, - }; - - int param; - char *e; - - if ((argc < 6) || (argc > 8)) - return EC_ERROR_PARAM_COUNT; - - peci.addr = strtoi(argv[1], &e, 0); - if (*e) - return EC_ERROR_PARAM1; - - peci.w_len = strtoi(argv[2], &e, 0); - if (*e) - return EC_ERROR_PARAM2; - - peci.r_len = strtoi(argv[3], &e, 0); - if (*e) - return EC_ERROR_PARAM3; - - peci.cmd_code = strtoi(argv[4], &e, 0); - if (*e) - return EC_ERROR_PARAM4; - - peci.timeout_us = strtoi(argv[5], &e, 0); - if (*e) - return EC_ERROR_PARAM5; - - if (argc > 6) { - param = strtoi(argv[6], &e, 0); - if (*e) - return EC_ERROR_PARAM6; - - /* MSB of parameter */ - w_buf[3] = (uint8_t)(param >> 24); - /* LSB of parameter */ - w_buf[2] = (uint8_t)(param >> 16); - /* Index */ - w_buf[1] = (uint8_t)(param >> 8); - /* Host ID[7:1] & Retry[0] */ - w_buf[0] = (uint8_t)(param >> 0); - - if (argc > 7) { - param = strtoi(argv[7], &e, 0); - if (*e) - return EC_ERROR_PARAM7; - - /* Data (1, 2 or 4 bytes) */ - w_buf[7] = (uint8_t)(param >> 24); - w_buf[6] = (uint8_t)(param >> 16); - w_buf[5] = (uint8_t)(param >> 8); - w_buf[4] = (uint8_t)(param >> 0); - } - } else { - peci.w_len = 0x00; - } - - if (peci_transaction(&peci)) { - ccprintf("PECI transaction error\n"); - return EC_ERROR_UNKNOWN; - } - ccprintf("PECI read data: %ph\n", HEX_BUF(r_buf, peci.r_len)); - return EC_SUCCESS; -} -DECLARE_CONSOLE_COMMAND(peci, peci_cmd, - "addr wlen rlen cmd timeout(us)", - "PECI command"); - -static int command_peci_temp(int argc, char **argv) -{ - int t; - - if (peci_get_cpu_temp(&t) != EC_SUCCESS) { - ccprintf("PECI get cpu temp error\n"); - return EC_ERROR_UNKNOWN; - } - - ccprintf("CPU temp: %d K, %d C\n", t, K_TO_C(t)); - return EC_SUCCESS; -} -DECLARE_CONSOLE_COMMAND(pecitemp, command_peci_temp, - NULL, - "Print CPU temperature"); -#endif /* CONFIG_CMD_PECI */ |