espi: Add support for debug helper to print slave capabilities
This change adds a Kconfig option to enable eSPI debugging that pulls in a helper function to print slave capabilities. BUG=b:153675913 Signed-off-by: Furquan Shaikh <furquan@google.com> Change-Id: I8ff250fe85dfa9370bf93ce3c7e2de5c069bf9e9 Reviewed-on: https://review.coreboot.org/c/coreboot/+/41254 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Raul Rangel <rrangel@chromium.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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Furquan Shaikh
parent
470f627c2b
commit
5cc41f2a6b
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@ -229,6 +229,12 @@
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#define ESPI_VW_SIGNAL_HIGH(x) (ESPI_VW_VALID(x) | ESPI_VW_VALUE(1, x))
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#define ESPI_VW_SIGNAL_LOW(x) (ESPI_VW_VALID(x) | ESPI_VW_VALUE(0, x))
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#if CONFIG(ESPI_DEBUG)
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void espi_show_slave_general_configuration(uint32_t config);
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#else
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static void espi_show_slave_general_configuration(uint32_t config) {}
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#endif
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static inline bool espi_slave_supports_quad_io(uint32_t gen_caps)
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{
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uint32_t mode = gen_caps & ESPI_SLAVE_IO_MODE_SUPP_MASK;
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@ -75,3 +75,9 @@ config NO_FMAP_CACHE
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If your platform really doesn't want to use an FMAP cache (e.g. due to
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space constraints), you can select this to disable warnings and save
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a bit more code.
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config ESPI_DEBUG
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bool
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help
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This option enables eSPI library helper functions for displaying debug
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information.
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@ -162,6 +162,11 @@ romstage-y += hexdump.c
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verstage-y += hexdump.c
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smm-y += hexdump.c
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bootblock-$(CONFIG_ESPI_DEBUG) += espi_debug.c
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verstage-$(CONFIG_ESPI_DEBUG) += espi_debug.c
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romstage-$(CONFIG_ESPI_DEBUG) += espi_debug.c
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ramstage-$(CONFIG_ESPI_DEBUG) += espi_debug.c
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bootblock-$(CONFIG_REG_SCRIPT) += reg_script.c
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verstage-$(CONFIG_REG_SCRIPT) += reg_script.c
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romstage-$(CONFIG_REG_SCRIPT) += reg_script.c
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@ -0,0 +1,94 @@
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/* SPDX-License-Identifier: GPL-2.0-only */
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/* This file is part of the coreboot project. */
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#include <console/console.h>
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#include <espi.h>
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#include <stdint.h>
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void espi_show_slave_general_configuration(uint32_t config)
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{
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uint32_t io_mode;
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uint32_t op_freq;
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printk(BIOS_DEBUG, "eSPI Slave configuration:\n");
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if (config & ESPI_SLAVE_CRC_ENABLE)
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printk(BIOS_DEBUG, " CRC checking enabled\n");
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if (config & ESPI_SLAVE_RESP_MOD_ENABLE)
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printk(BIOS_DEBUG, " Response modifier enabled\n");
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if (config & ESPI_SLAVE_ALERT_MODE_PIN)
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printk(BIOS_DEBUG, " Dedicated Alert# used to signal alert event\n");
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else
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printk(BIOS_DEBUG, " IO bit1 pin used to signal alert event\n");
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io_mode = config & ESPI_SLAVE_IO_MODE_SEL_MASK;
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if (io_mode == ESPI_SLAVE_IO_MODE_SEL_SINGLE)
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printk(BIOS_DEBUG, " eSPI single IO mode selected\n");
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else if (io_mode == ESPI_SLAVE_IO_MODE_SEL_DUAL)
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printk(BIOS_DEBUG, " eSPI dual IO mode selected\n");
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else if (io_mode == ESPI_SLAVE_IO_MODE_SEL_QUAD)
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printk(BIOS_DEBUG, " eSPI quad IO mode selected\n");
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else
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printk(BIOS_DEBUG, " Error: Invalid eSPI IO mode selected\n");
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io_mode = config & ESPI_SLAVE_IO_MODE_SUPP_MASK;
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if (io_mode == ESPI_SLAVE_IO_MODE_SUPP_SINGLE_QUAD)
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printk(BIOS_DEBUG, " eSPI quad and single IO modes supported\n");
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else if (io_mode == ESPI_SLAVE_IO_MODE_SUPP_SINGLE_DUAL)
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printk(BIOS_DEBUG, " eSPI dual and single IO mode supported\n");
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else if (io_mode == ESPI_SLAVE_IO_MODE_SUPP_SINGLE_DUAL_QUAD)
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printk(BIOS_DEBUG, " eSPI quad, dual, and single IO modes supported\n");
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else
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printk(BIOS_DEBUG, " Only eSPI single IO mode supported\n");
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if (config & ESPI_SLAVE_OPEN_DRAIN_ALERT_SEL)
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printk(BIOS_DEBUG, " Alert# pin is open-drain\n");
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else
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printk(BIOS_DEBUG, " Alert# pin is driven\n");
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op_freq = config & ESPI_SLAVE_OP_FREQ_SEL_MASK;
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if (op_freq == ESPI_SLAVE_OP_FREQ_SEL_20_MHZ)
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printk(BIOS_DEBUG, " eSPI 20MHz selected\n");
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else if (op_freq == ESPI_SLAVE_OP_FREQ_SEL_25_MHZ)
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printk(BIOS_DEBUG, " eSPI 25MHz selected\n");
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else if (op_freq == ESPI_SLAVE_OP_FREQ_SEL_33_MHZ)
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printk(BIOS_DEBUG, " eSPI 33MHz selected\n");
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else if (op_freq == ESPI_SLAVE_OP_FREQ_SEL_50_MHZ)
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printk(BIOS_DEBUG, " eSPI 50MHz selected\n");
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else if (op_freq == ESPI_SLAVE_OP_FREQ_SEL_66_MHZ)
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printk(BIOS_DEBUG, " eSPI 66MHz selected\n");
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else
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printk(BIOS_DEBUG, " Error: Invalid eSPI frequency\n");
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if (config & ESPI_SLAVE_OPEN_DRAIN_ALERT_SUPP)
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printk(BIOS_DEBUG, " Open-drain Alert# pin supported\n");
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op_freq = config & ESPI_SLAVE_OP_FREQ_SUPP_MASK;
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if (op_freq == ESPI_SLAVE_OP_FREQ_SUPP_20_MHZ)
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printk(BIOS_DEBUG, " eSPI 20MHz supported\n");
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else if (op_freq == ESPI_SLAVE_OP_FREQ_SUPP_25_MHZ)
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printk(BIOS_DEBUG, " eSPI 25MHz supported\n");
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else if (op_freq == ESPI_SLAVE_OP_FREQ_SUPP_33_MHZ)
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printk(BIOS_DEBUG, " eSPI 33MHz supported\n");
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else if (op_freq == ESPI_SLAVE_OP_FREQ_SUPP_50_MHZ)
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printk(BIOS_DEBUG, " eSPI 50MHz supported\n");
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else if (op_freq == ESPI_SLAVE_OP_FREQ_SUPP_66_MHZ)
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printk(BIOS_DEBUG, " eSPI 66MHz supported\n");
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else
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printk(BIOS_DEBUG, " Error: Invalid eSPI frequency\n");
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printk(BIOS_DEBUG, " Maximum Wait state: %d\n",
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(config & ESPI_SLAVE_MAX_WAIT_MASK) >> ESPI_SLAVE_MAX_WAIT_SHIFT);
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if (config & ESPI_SLAVE_PERIPH_CH_SUPP)
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printk(BIOS_DEBUG, " Peripheral Channel supported\n");
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if (config & ESPI_SLAVE_VW_CH_SUPP)
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printk(BIOS_DEBUG, " Virtual Wire Channel supported\n");
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if (config & ESPI_SLAVE_OOB_CH_SUPP)
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printk(BIOS_DEBUG, " OOB Channel supported\n");
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if (config & ESPI_SLAVE_FLASH_CH_SUPP)
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printk(BIOS_DEBUG, " Flash Access Channel supported\n");
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printk(BIOS_DEBUG, "\n");
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}
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