fiamux.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <console/console.h>
#include <soc/fiamux.h>
 
#define FSP_FIAMUX_HOB_GUID                                            \
        {                                                              \
                0x26ad492e, 0xf951, 0x4e43,                            \
                {                                                      \
                        0xbc, 0x72, 0x22, 0x76, 0x58, 0xb1, 0xf6, 0x23 \
                }                                                      \
        }
 
int get_fiamux_hsio_info(uint16_t num_of_lanes, size_t num_of_entry,
                                BL_HSIO_INFORMATION **config)
{
        uint8_t entry;
 
        if ((num_of_lanes == 0) || (num_of_entry == 0) || (*config == NULL))
                return 1;
 
        for (entry = 0; entry < num_of_entry; entry++) {
                if ((*config)[entry].NumLanesSupported == num_of_lanes) {
                        *config = &(*config)[entry];
                        return 0;
                }
        }
 
        return 1;
}
 
/*
* Display the FIA MUX HOB.
*
*   @param   Pointer of FIA MUX HOB data
*
*   @return  None
*
*/
void print_fiamux_config_hob(BL_FIA_MUX_CONFIG_HOB *fiamux_hob_data)
{
        /* Display the FIA MUX Configuration */
        printk(BIOS_DEBUG, "FIA MUX Configuration in FSP HOB is:\n");
 
        printk(BIOS_DEBUG, "    FiaMuxConfig.SkuNumLanesAllowed = 0x%x\n",
               (uint32_t)(fiamux_hob_data->FiaMuxConfig.SkuNumLanesAllowed));
 
        printk(BIOS_DEBUG, "    FiaMuxConfig.FiaMuxConfig = 0x%llx\n",
               (uint64_t)(fiamux_hob_data->FiaMuxConfig.FiaMuxConfig
                                  .MuxConfiguration.MeFiaMuxLaneConfig));
 
        printk(BIOS_DEBUG,
               "    FiaMuxConfig.FiaMuxConfig.SataLaneConfiguration = 0x%llx\n",
               (uint64_t)(fiamux_hob_data->FiaMuxConfig.FiaMuxConfig
                                  .SataLaneConfiguration.MeFiaSataLaneConfig));
 
        printk(BIOS_DEBUG, "    FiaMuxConfig.FiaMuxConfig."
                           "PcieRootPortsConfiguration = 0x%llx\n",
               (uint64_t)(fiamux_hob_data->FiaMuxConfig.FiaMuxConfig
                                  .PcieRootPortsConfiguration
                                  .MeFiaPcieRootPortsConfig));
 
        printk(BIOS_DEBUG, "    FiaMuxConfig.FiaMuxConfigRequest = 0x%llx\n",
               (uint64_t)(fiamux_hob_data->FiaMuxConfig.FiaMuxConfigRequest
                                  .MuxConfiguration.MeFiaMuxLaneConfig));
 
        printk(BIOS_DEBUG, "    FiaMuxConfig.FiaMuxConfigRequest."
                           "SataLaneConfiguration = 0x%llx\n",
               (uint64_t)(fiamux_hob_data->FiaMuxConfig.FiaMuxConfigRequest
                                  .SataLaneConfiguration.MeFiaSataLaneConfig));
 
        printk(BIOS_DEBUG, "    FiaMuxConfig.FiaMuxConfigRequest."
                           "PcieRootPortsConfiguration = 0x%llx\n",
               (uint64_t)(fiamux_hob_data->FiaMuxConfig.FiaMuxConfigRequest
                                  .PcieRootPortsConfiguration
                                  .MeFiaPcieRootPortsConfig));
        printk(BIOS_DEBUG,
               "    FiaMuxConfigStatus.FiaMuxConfigGetStatus = 0x%x\n",
               (uint32_t)(fiamux_hob_data->FiaMuxConfigStatus
                                  .FiaMuxConfigGetStatus));
 
        printk(BIOS_DEBUG,
               "    FiaMuxConfigStatus.FiaMuxConfigSetStatus = 0x%x\n",
               (uint32_t)(fiamux_hob_data->FiaMuxConfigStatus
                                  .FiaMuxConfigSetStatus));
 
        printk(BIOS_DEBUG,
               "    FiaMuxConfigStatus.FiaMuxConfigSetRequired = 0x%x\n",
               (uint8_t)(fiamux_hob_data->FiaMuxConfigStatus
                                 .FiaMuxConfigSetRequired));
}
 
/*
* Get the pointer of FIA MUX HOB data
*
*   @param   Pointer of FIA MUX HOB data
*
*   @return:
*     Non-zero - FIA MUX configuration correct.
*     Zero - Either FIA MUX configuration incorrect or
*     it can not be verified.
*/
BL_FIA_MUX_CONFIG_HOB *get_fiamux_hob_data(void)
{
        u32 const *fiamux_hob = NULL;
        BL_FIA_MUX_CONFIG_HOB *fiamux_hob_data = NULL;
        const EFI_GUID fiamux_guid = FSP_FIAMUX_HOB_GUID;
        size_t size;
 
        /* Parse FIA MUX configuration HOB */
        fiamux_hob = fsp_find_extension_hob_by_guid(
                (uint8_t const *)&fiamux_guid, &size);
 
        if (fiamux_hob == NULL) {
                /* FIA MUX configuration HOB not exist */
                die("FIA MUX Configuration Data Hob does not present!\n");
        } else {
                /* Get FIA MUX configuration HOB */
                fiamux_hob_data = (BL_FIA_MUX_CONFIG_HOB *)(fiamux_hob);
 
                /* Display FIA MUX configuration HOB */
                print_fiamux_config_hob(fiamux_hob_data);
        }
 
        return fiamux_hob_data;
}
 
__weak size_t mainboard_get_hsio_config(BL_HSIO_INFORMATION **p_hsio_config)
{
        *p_hsio_config = NULL;
        return 0;
}