/* SPDX-License-Identifier: GPL-2.0-only */ #include <bootblock_common.h> #include <device/pnp_type.h> #include <amdblocks/acpimmio.h> #include <stdint.h> #include <superio/ite/common/ite.h> #include <superio/ite/it8728f/it8728f.h> #include <superio/nuvoton/common/nuvoton.h> #include <superio/nuvoton/nct6779d/nct6779d.h> static void sbxxx_enable_48mhzout(void) { /* most likely programming to 48MHz out signal */ u32 reg32; reg32 = misc_read32(0x28); reg32 &= 0xffc7ffff; reg32 |= 0x00100000; misc_write32(0x28, reg32); misc_write32(0x40, misc_read32(0x40) & (~0x80u)); } static void superio_init_m(void) { const pnp_devfn_t uart = PNP_DEV(0x2e, IT8728F_SP1); const pnp_devfn_t gpio = PNP_DEV(0x2e, IT8728F_GPIO); ite_kill_watchdog(gpio); ite_enable_serial(uart, CONFIG_TTYS0_BASE); ite_enable_3vsbsw(gpio); } static void superio_init_m_pro(void) { const pnp_devfn_t uart = PNP_DEV(0x2e, NCT6779D_SP1); nuvoton_enable_serial(uart, CONFIG_TTYS0_BASE); } void bootblock_mainboard_early_init(void) { /* enable SIO clock */ sbxxx_enable_48mhzout(); if (CONFIG(BOARD_ASUS_F2A85_M_PRO)) superio_init_m_pro(); else superio_init_m(); }