ec.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <acpi/acpi.h>
#include <console/console.h>
#include <ec/google/chromeec/ec.h>
#include <amdblocks/lpc.h>
#include <soc/southbridge.h>
#include <variant/ec.h>
 
static void ramstage_ec_init(void)
{
        const struct google_chromeec_event_info info = {
                .log_events = MAINBOARD_EC_LOG_EVENTS,
                .sci_events = MAINBOARD_EC_SCI_EVENTS,
                .s3_wake_events = MAINBOARD_EC_S3_WAKE_EVENTS,
                .s5_wake_events = MAINBOARD_EC_S5_WAKE_EVENTS,
        };
 
        printk(BIOS_DEBUG, "mainboard: EC init\n");
 
        google_chromeec_events_init(&info, acpi_is_wakeup_s3());
}
 
static void early_ec_init(void)
{
        uint16_t ec_ioport_base;
        size_t ec_ioport_size;
        int status;
 
        /*
         * Set up LPC decoding for the ChromeEC I/O port ranges:
         * - Ports 62/66, 60/64, and 200->208
         *  -- set by hudson_lpc_decode() in pre
         * - ChromeEC specific communication I/O ports.
         */
        google_chromeec_ioport_range(&ec_ioport_base, &ec_ioport_size);
        printk(BIOS_DEBUG,
                "LPC Setup google_chromeec_ioport_range: %04x, %08zx\n",
                ec_ioport_base, ec_ioport_size);
        status = lpc_set_wideio_range(ec_ioport_base, ec_ioport_size);
        if (status == WIDEIO_RANGE_ERROR)
                printk(BIOS_ERR, "Failed to assign a range\n");
        else
                printk(BIOS_DEBUG, "Range assigned to wide IO %d\n", status);
}
 
void mainboard_ec_init(void)
{
        if (ENV_RAMSTAGE)
                ramstage_ec_init();
        else
                early_ec_init();
}