pei_data.h

Go to the documentation of this file.

/* SPDX-License-Identifier: BSD-3-Clause */
 
#ifndef PEI_DATA_H
#define PEI_DATA_H
 
#include <stdint.h>
 
typedef void (*tx_byte_func)(unsigned char byte);
#define PEI_VERSION 15
 
#define SPD_LEN 256
 
#define PEI_USB_OC_PIN_SKIP 8
 
enum pei_usb2_port_location {
        PEI_USB_PORT_BACK_PANEL = 0,
        PEI_USB_PORT_FRONT_PANEL,
        PEI_USB_PORT_DOCK,
        PEI_USB_PORT_MINI_PCIE,
        PEI_USB_PORT_FLEX,
        PEI_USB_PORT_INTERNAL,
        PEI_USB_PORT_SKIP
};
 
/* Usb Port Length:
 * [16:4] = length in inches in octal format
 * [3:0]  = decimal point
 */
struct pei_usb2_port_setting {
        uint16_t length;
        uint8_t enable;
        uint8_t over_current_pin;
        uint8_t location;
} __packed;
 
struct pei_usb3_port_setting {
        uint8_t enable;
        uint8_t over_current_pin;
} __packed;
 
struct pei_data
{
        uint32_t pei_version;
        uint32_t mchbar;
        uint32_t dmibar;
        uint32_t epbar;
        uint32_t pciexbar;
        uint16_t smbusbar;
        /* Unused by HSW MRC, but changes to the memory layout of this struct break the ABI */
        uint32_t _unused_wdbbar;
        uint32_t _unused_wdbsize;
        uint32_t hpet_address;
        uint32_t rcba;
        uint32_t pmbase;
        uint32_t gpiobase;
        uint32_t temp_mmio_base;
        /* System type: 0 => Mobile, 1 => Desktop/Server, 5 => ULT, Others => Reserved */
        uint32_t system_type;
        uint32_t tseg_size;
        uint8_t spd_addresses[4];
        int boot_mode;
        int ec_present;
        int gbe_enable;
        // 0 = leave channel enabled
        // 1 = disable dimm 0 on channel
        // 2 = disable dimm 1 on channel
        // 3 = disable dimm 0+1 on channel
        int dimm_channel0_disabled;
        int dimm_channel1_disabled;
        /* Enable 2x Refresh Mode */
        int ddr_refresh_2x;
        int dq_pins_interleaved;
        /* Data read from flash and passed into MRC */
        unsigned char *mrc_input;
        unsigned int mrc_input_len;
        /* Data from MRC that should be saved to flash */
        unsigned char *mrc_output;
        unsigned int mrc_output_len;
        /* Max frequency to run DDR3 at. Can be one of four values: 800, 1067, 1333, 1600 */
        uint32_t max_ddr3_freq;
        /* Route all USB ports to XHCI controller in resume path */
        int usb_xhci_on_resume;
        struct pei_usb2_port_setting usb2_ports[16];
        struct pei_usb3_port_setting usb3_ports[16];
        uint8_t spd_data[4][SPD_LEN];
        tx_byte_func tx_byte;
} __packed;
 
#endif