romstage.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <console/console.h>
#include <southbridge/intel/common/gpio.h>
#include <northbridge/intel/gm45/gm45.h>
#include <drivers/lenovo/hybrid_graphics/hybrid_graphics.h>
 
static void hybrid_graphics_init(sysinfo_t *sysinfo)
{
        bool peg, igd;
 
        early_hybrid_graphics(&igd, &peg);
 
        sysinfo->enable_igd = igd;
        sysinfo->enable_peg = peg;
}
 
void get_mb_spd_addrmap(u8 spd_addrmap[4])
{
        spd_addrmap[0] = 0x50;
        spd_addrmap[2] = 0x51;
}
 
void mb_pre_raminit_setup(sysinfo_t *sysinfo)
{
        if (CONFIG(BOARD_LENOVO_R500)) {
                int use_integrated = get_gpio(21);
                printk(BIOS_DEBUG, "R500 variant found with an %s GPU\n",
                       use_integrated ? "integrated" : "discrete");
                if (use_integrated) {
                        sysinfo->enable_igd = 1;
                        sysinfo->enable_peg = 0;
                } else {
                        sysinfo->enable_igd = 0;
                        sysinfo->enable_peg = 1;
                }
        } else {
                hybrid_graphics_init(sysinfo);
        }
 
}
 
void mb_post_raminit_setup(void)
{
        /* FIXME: make a proper SMBUS mux support. */
        /* Set the SMBUS mux to the eeprom */
        set_gpio(42, GPIO_LEVEL_LOW);
}