diff options
Diffstat (limited to 'src/lib/espi_debug.c')
| -rw-r--r-- | src/lib/espi_debug.c | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/src/lib/espi_debug.c b/src/lib/espi_debug.c new file mode 100644 index 0000000000..63e16f444b --- /dev/null +++ b/src/lib/espi_debug.c @@ -0,0 +1,94 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* This file is part of the coreboot project. */ + +#include <console/console.h> +#include <espi.h> +#include <stdint.h> + +void espi_show_slave_general_configuration(uint32_t config) +{ + uint32_t io_mode; + uint32_t op_freq; + + printk(BIOS_DEBUG, "eSPI Slave configuration:\n"); + + if (config & ESPI_SLAVE_CRC_ENABLE) + printk(BIOS_DEBUG, " CRC checking enabled\n"); + + if (config & ESPI_SLAVE_RESP_MOD_ENABLE) + printk(BIOS_DEBUG, " Response modifier enabled\n"); + + if (config & ESPI_SLAVE_ALERT_MODE_PIN) + printk(BIOS_DEBUG, " Dedicated Alert# used to signal alert event\n"); + else + printk(BIOS_DEBUG, " IO bit1 pin used to signal alert event\n"); + + io_mode = config & ESPI_SLAVE_IO_MODE_SEL_MASK; + if (io_mode == ESPI_SLAVE_IO_MODE_SEL_SINGLE) + printk(BIOS_DEBUG, " eSPI single IO mode selected\n"); + else if (io_mode == ESPI_SLAVE_IO_MODE_SEL_DUAL) + printk(BIOS_DEBUG, " eSPI dual IO mode selected\n"); + else if (io_mode == ESPI_SLAVE_IO_MODE_SEL_QUAD) + printk(BIOS_DEBUG, " eSPI quad IO mode selected\n"); + else + printk(BIOS_DEBUG, " Error: Invalid eSPI IO mode selected\n"); + + io_mode = config & ESPI_SLAVE_IO_MODE_SUPP_MASK; + if (io_mode == ESPI_SLAVE_IO_MODE_SUPP_SINGLE_QUAD) + printk(BIOS_DEBUG, " eSPI quad and single IO modes supported\n"); + else if (io_mode == ESPI_SLAVE_IO_MODE_SUPP_SINGLE_DUAL) + printk(BIOS_DEBUG, " eSPI dual and single IO mode supported\n"); + else if (io_mode == ESPI_SLAVE_IO_MODE_SUPP_SINGLE_DUAL_QUAD) + printk(BIOS_DEBUG, " eSPI quad, dual, and single IO modes supported\n"); + else + printk(BIOS_DEBUG, " Only eSPI single IO mode supported\n"); + + if (config & ESPI_SLAVE_OPEN_DRAIN_ALERT_SEL) + printk(BIOS_DEBUG, " Alert# pin is open-drain\n"); + else + printk(BIOS_DEBUG, " Alert# pin is driven\n"); + + op_freq = config & ESPI_SLAVE_OP_FREQ_SEL_MASK; + if (op_freq == ESPI_SLAVE_OP_FREQ_SEL_20_MHZ) + printk(BIOS_DEBUG, " eSPI 20MHz selected\n"); + else if (op_freq == ESPI_SLAVE_OP_FREQ_SEL_25_MHZ) + printk(BIOS_DEBUG, " eSPI 25MHz selected\n"); + else if (op_freq == ESPI_SLAVE_OP_FREQ_SEL_33_MHZ) + printk(BIOS_DEBUG, " eSPI 33MHz selected\n"); + else if (op_freq == ESPI_SLAVE_OP_FREQ_SEL_50_MHZ) + printk(BIOS_DEBUG, " eSPI 50MHz selected\n"); + else if (op_freq == ESPI_SLAVE_OP_FREQ_SEL_66_MHZ) + printk(BIOS_DEBUG, " eSPI 66MHz selected\n"); + else + printk(BIOS_DEBUG, " Error: Invalid eSPI frequency\n"); + + if (config & ESPI_SLAVE_OPEN_DRAIN_ALERT_SUPP) + printk(BIOS_DEBUG, " Open-drain Alert# pin supported\n"); + + op_freq = config & ESPI_SLAVE_OP_FREQ_SUPP_MASK; + if (op_freq == ESPI_SLAVE_OP_FREQ_SUPP_20_MHZ) + printk(BIOS_DEBUG, " eSPI 20MHz supported\n"); + else if (op_freq == ESPI_SLAVE_OP_FREQ_SUPP_25_MHZ) + printk(BIOS_DEBUG, " eSPI 25MHz supported\n"); + else if (op_freq == ESPI_SLAVE_OP_FREQ_SUPP_33_MHZ) + printk(BIOS_DEBUG, " eSPI 33MHz supported\n"); + else if (op_freq == ESPI_SLAVE_OP_FREQ_SUPP_50_MHZ) + printk(BIOS_DEBUG, " eSPI 50MHz supported\n"); + else if (op_freq == ESPI_SLAVE_OP_FREQ_SUPP_66_MHZ) + printk(BIOS_DEBUG, " eSPI 66MHz supported\n"); + else + printk(BIOS_DEBUG, " Error: Invalid eSPI frequency\n"); + + printk(BIOS_DEBUG, " Maximum Wait state: %d\n", + (config & ESPI_SLAVE_MAX_WAIT_MASK) >> ESPI_SLAVE_MAX_WAIT_SHIFT); + + if (config & ESPI_SLAVE_PERIPH_CH_SUPP) + printk(BIOS_DEBUG, " Peripheral Channel supported\n"); + if (config & ESPI_SLAVE_VW_CH_SUPP) + printk(BIOS_DEBUG, " Virtual Wire Channel supported\n"); + if (config & ESPI_SLAVE_OOB_CH_SUPP) + printk(BIOS_DEBUG, " OOB Channel supported\n"); + if (config & ESPI_SLAVE_FLASH_CH_SUPP) + printk(BIOS_DEBUG, " Flash Access Channel supported\n"); + printk(BIOS_DEBUG, "\n"); +} |