Furquan Shaikh | 5cc41f2 | 2020-05-11 12:11:27 -0700 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Furquan Shaikh | 5cc41f2 | 2020-05-11 12:11:27 -0700 | [diff] [blame] | 2 | |
| 3 | #include <console/console.h> |
| 4 | #include <espi.h> |
| 5 | #include <stdint.h> |
| 6 | |
| 7 | void espi_show_slave_general_configuration(uint32_t config) |
| 8 | { |
| 9 | uint32_t io_mode; |
| 10 | uint32_t op_freq; |
| 11 | |
| 12 | printk(BIOS_DEBUG, "eSPI Slave configuration:\n"); |
| 13 | |
| 14 | if (config & ESPI_SLAVE_CRC_ENABLE) |
| 15 | printk(BIOS_DEBUG, " CRC checking enabled\n"); |
| 16 | |
| 17 | if (config & ESPI_SLAVE_RESP_MOD_ENABLE) |
| 18 | printk(BIOS_DEBUG, " Response modifier enabled\n"); |
| 19 | |
| 20 | if (config & ESPI_SLAVE_ALERT_MODE_PIN) |
| 21 | printk(BIOS_DEBUG, " Dedicated Alert# used to signal alert event\n"); |
| 22 | else |
| 23 | printk(BIOS_DEBUG, " IO bit1 pin used to signal alert event\n"); |
| 24 | |
| 25 | io_mode = config & ESPI_SLAVE_IO_MODE_SEL_MASK; |
Furquan Shaikh | 69d5bbf | 2020-05-12 15:46:16 -0700 | [diff] [blame] | 26 | switch (io_mode) { |
| 27 | case ESPI_SLAVE_IO_MODE_SEL_SINGLE: |
Furquan Shaikh | 5cc41f2 | 2020-05-11 12:11:27 -0700 | [diff] [blame] | 28 | printk(BIOS_DEBUG, " eSPI single IO mode selected\n"); |
Furquan Shaikh | 69d5bbf | 2020-05-12 15:46:16 -0700 | [diff] [blame] | 29 | break; |
| 30 | case ESPI_SLAVE_IO_MODE_SEL_DUAL: |
Furquan Shaikh | 5cc41f2 | 2020-05-11 12:11:27 -0700 | [diff] [blame] | 31 | printk(BIOS_DEBUG, " eSPI dual IO mode selected\n"); |
Furquan Shaikh | 69d5bbf | 2020-05-12 15:46:16 -0700 | [diff] [blame] | 32 | break; |
| 33 | case ESPI_SLAVE_IO_MODE_SEL_QUAD: |
Furquan Shaikh | 5cc41f2 | 2020-05-11 12:11:27 -0700 | [diff] [blame] | 34 | printk(BIOS_DEBUG, " eSPI quad IO mode selected\n"); |
Furquan Shaikh | 69d5bbf | 2020-05-12 15:46:16 -0700 | [diff] [blame] | 35 | break; |
| 36 | default: |
Furquan Shaikh | 5cc41f2 | 2020-05-11 12:11:27 -0700 | [diff] [blame] | 37 | printk(BIOS_DEBUG, " Error: Invalid eSPI IO mode selected\n"); |
Furquan Shaikh | 69d5bbf | 2020-05-12 15:46:16 -0700 | [diff] [blame] | 38 | } |
Furquan Shaikh | 5cc41f2 | 2020-05-11 12:11:27 -0700 | [diff] [blame] | 39 | |
| 40 | io_mode = config & ESPI_SLAVE_IO_MODE_SUPP_MASK; |
Furquan Shaikh | 69d5bbf | 2020-05-12 15:46:16 -0700 | [diff] [blame] | 41 | switch (io_mode) { |
| 42 | case ESPI_SLAVE_IO_MODE_SUPP_SINGLE_QUAD: |
Furquan Shaikh | 5cc41f2 | 2020-05-11 12:11:27 -0700 | [diff] [blame] | 43 | printk(BIOS_DEBUG, " eSPI quad and single IO modes supported\n"); |
Furquan Shaikh | 69d5bbf | 2020-05-12 15:46:16 -0700 | [diff] [blame] | 44 | break; |
| 45 | case ESPI_SLAVE_IO_MODE_SUPP_SINGLE_DUAL: |
| 46 | printk(BIOS_DEBUG, " eSPI dual and single IO modes supported\n"); |
| 47 | break; |
| 48 | case ESPI_SLAVE_IO_MODE_SUPP_SINGLE_DUAL_QUAD: |
| 49 | printk(BIOS_DEBUG, " eSPI quad, dual and single IO modes supported\n"); |
| 50 | break; |
| 51 | default: |
Furquan Shaikh | 5cc41f2 | 2020-05-11 12:11:27 -0700 | [diff] [blame] | 52 | printk(BIOS_DEBUG, " Only eSPI single IO mode supported\n"); |
Furquan Shaikh | 69d5bbf | 2020-05-12 15:46:16 -0700 | [diff] [blame] | 53 | } |
Furquan Shaikh | 5cc41f2 | 2020-05-11 12:11:27 -0700 | [diff] [blame] | 54 | |
| 55 | if (config & ESPI_SLAVE_OPEN_DRAIN_ALERT_SEL) |
| 56 | printk(BIOS_DEBUG, " Alert# pin is open-drain\n"); |
| 57 | else |
| 58 | printk(BIOS_DEBUG, " Alert# pin is driven\n"); |
| 59 | |
| 60 | op_freq = config & ESPI_SLAVE_OP_FREQ_SEL_MASK; |
Furquan Shaikh | 69d5bbf | 2020-05-12 15:46:16 -0700 | [diff] [blame] | 61 | switch (op_freq) { |
| 62 | case ESPI_SLAVE_OP_FREQ_SEL_20_MHZ: |
Furquan Shaikh | 5cc41f2 | 2020-05-11 12:11:27 -0700 | [diff] [blame] | 63 | printk(BIOS_DEBUG, " eSPI 20MHz selected\n"); |
Furquan Shaikh | 69d5bbf | 2020-05-12 15:46:16 -0700 | [diff] [blame] | 64 | break; |
| 65 | case ESPI_SLAVE_OP_FREQ_SEL_25_MHZ: |
Furquan Shaikh | 5cc41f2 | 2020-05-11 12:11:27 -0700 | [diff] [blame] | 66 | printk(BIOS_DEBUG, " eSPI 25MHz selected\n"); |
Furquan Shaikh | 69d5bbf | 2020-05-12 15:46:16 -0700 | [diff] [blame] | 67 | break; |
| 68 | case ESPI_SLAVE_OP_FREQ_SEL_33_MHZ: |
Furquan Shaikh | 5cc41f2 | 2020-05-11 12:11:27 -0700 | [diff] [blame] | 69 | printk(BIOS_DEBUG, " eSPI 33MHz selected\n"); |
Furquan Shaikh | 69d5bbf | 2020-05-12 15:46:16 -0700 | [diff] [blame] | 70 | break; |
| 71 | case ESPI_SLAVE_OP_FREQ_SEL_50_MHZ: |
Furquan Shaikh | 5cc41f2 | 2020-05-11 12:11:27 -0700 | [diff] [blame] | 72 | printk(BIOS_DEBUG, " eSPI 50MHz selected\n"); |
Furquan Shaikh | 69d5bbf | 2020-05-12 15:46:16 -0700 | [diff] [blame] | 73 | break; |
| 74 | case ESPI_SLAVE_OP_FREQ_SEL_66_MHZ: |
Furquan Shaikh | 5cc41f2 | 2020-05-11 12:11:27 -0700 | [diff] [blame] | 75 | printk(BIOS_DEBUG, " eSPI 66MHz selected\n"); |
Furquan Shaikh | 69d5bbf | 2020-05-12 15:46:16 -0700 | [diff] [blame] | 76 | break; |
| 77 | default: |
Furquan Shaikh | 5cc41f2 | 2020-05-11 12:11:27 -0700 | [diff] [blame] | 78 | printk(BIOS_DEBUG, " Error: Invalid eSPI frequency\n"); |
Furquan Shaikh | 69d5bbf | 2020-05-12 15:46:16 -0700 | [diff] [blame] | 79 | } |
Furquan Shaikh | 5cc41f2 | 2020-05-11 12:11:27 -0700 | [diff] [blame] | 80 | |
| 81 | if (config & ESPI_SLAVE_OPEN_DRAIN_ALERT_SUPP) |
| 82 | printk(BIOS_DEBUG, " Open-drain Alert# pin supported\n"); |
| 83 | |
| 84 | op_freq = config & ESPI_SLAVE_OP_FREQ_SUPP_MASK; |
Furquan Shaikh | 69d5bbf | 2020-05-12 15:46:16 -0700 | [diff] [blame] | 85 | switch (op_freq) { |
| 86 | case ESPI_SLAVE_OP_FREQ_SUPP_20_MHZ: |
| 87 | printk(BIOS_DEBUG, " eSPI up to 20MHz supported\n"); |
| 88 | break; |
| 89 | case ESPI_SLAVE_OP_FREQ_SUPP_25_MHZ: |
| 90 | printk(BIOS_DEBUG, " eSPI up to 25MHz supported\n"); |
| 91 | break; |
| 92 | case ESPI_SLAVE_OP_FREQ_SUPP_33_MHZ: |
| 93 | printk(BIOS_DEBUG, " eSPI up to 33MHz supported\n"); |
| 94 | break; |
| 95 | case ESPI_SLAVE_OP_FREQ_SUPP_50_MHZ: |
| 96 | printk(BIOS_DEBUG, " eSPI up to 50MHz supported\n"); |
| 97 | break; |
| 98 | case ESPI_SLAVE_OP_FREQ_SUPP_66_MHZ: |
| 99 | printk(BIOS_DEBUG, " eSPI up to 66MHz supported\n"); |
| 100 | break; |
| 101 | default: |
Furquan Shaikh | 5cc41f2 | 2020-05-11 12:11:27 -0700 | [diff] [blame] | 102 | printk(BIOS_DEBUG, " Error: Invalid eSPI frequency\n"); |
Furquan Shaikh | 69d5bbf | 2020-05-12 15:46:16 -0700 | [diff] [blame] | 103 | } |
Furquan Shaikh | 5cc41f2 | 2020-05-11 12:11:27 -0700 | [diff] [blame] | 104 | |
| 105 | printk(BIOS_DEBUG, " Maximum Wait state: %d\n", |
| 106 | (config & ESPI_SLAVE_MAX_WAIT_MASK) >> ESPI_SLAVE_MAX_WAIT_SHIFT); |
| 107 | |
| 108 | if (config & ESPI_SLAVE_PERIPH_CH_SUPP) |
| 109 | printk(BIOS_DEBUG, " Peripheral Channel supported\n"); |
| 110 | if (config & ESPI_SLAVE_VW_CH_SUPP) |
| 111 | printk(BIOS_DEBUG, " Virtual Wire Channel supported\n"); |
| 112 | if (config & ESPI_SLAVE_OOB_CH_SUPP) |
| 113 | printk(BIOS_DEBUG, " OOB Channel supported\n"); |
| 114 | if (config & ESPI_SLAVE_FLASH_CH_SUPP) |
| 115 | printk(BIOS_DEBUG, " Flash Access Channel supported\n"); |
| 116 | printk(BIOS_DEBUG, "\n"); |
| 117 | } |