/* SPDX-License-Identifier: GPL-2.0-only */ #include #include #include #include #include #include #include #include #include #include #define ASPEED_SIO_PORT 0x2E #define PCR_DMI_LPCIOD 0x2770 #define PCR_DMI_LPCIOE 0x2774 void bootblock_mainboard_early_init(void) { uint16_t lpciod = LPC_IOD_COMA_RANGE; uint16_t lpcioe = (LPC_IOE_SUPERIO_2E_2F | LPC_IOE_COMA_EN); /* Open IO windows: 0x3f8 for com1 */ pcr_or32(PID_DMI, PCR_DMI_LPCIOD, lpciod); /* LPC I/O enable: com1 */ pcr_or32(PID_DMI, PCR_DMI_LPCIOE, lpcioe); /* Enable com1 (0x3f8) and superio (0x2e) */ pci_write_config16(PCH_DEV_LPC, LPC_IO_DECODE, lpciod); pci_write_config16(PCH_DEV_LPC, LPC_IO_ENABLES, lpcioe); const pnp_devfn_t serial_dev = PNP_DEV(ASPEED_SIO_PORT, AST2400_SUART1); aspeed_enable_serial(serial_dev, CONFIG_TTYS0_BASE); }