1*83d290c5STom Rini // SPDX-License-Identifier: GPL-2.0+ 2a2e3b05eSBin Meng /* 3a2e3b05eSBin Meng * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com> 4a2e3b05eSBin Meng */ 5a2e3b05eSBin Meng 6a2e3b05eSBin Meng #include <common.h> 7a2e3b05eSBin Meng #include <dm.h> 8a2e3b05eSBin Meng #include <errno.h> 9a2e3b05eSBin Meng #include <pci.h> 10a2e3b05eSBin Meng #include <smsc_sio1007.h> 11a2e3b05eSBin Meng #include <asm/ibmpc.h> 128c30b571SSimon Glass #include <asm/lpc_common.h> 13a2e3b05eSBin Meng #include <asm/pci.h> 14a2e3b05eSBin Meng #include <asm/arch/pch.h> 15a2e3b05eSBin Meng 16a2e3b05eSBin Meng #define SIO1007_RUNTIME_IOPORT 0x180 17a2e3b05eSBin Meng 18a2e3b05eSBin Meng int board_early_init_f(void) 19a2e3b05eSBin Meng { 20a2e3b05eSBin Meng struct udevice *pch; 21a2e3b05eSBin Meng int ret; 22a2e3b05eSBin Meng 23a2e3b05eSBin Meng ret = uclass_first_device(UCLASS_PCH, &pch); 24a2e3b05eSBin Meng if (ret) 25a2e3b05eSBin Meng return ret; 26a2e3b05eSBin Meng if (!pch) 27a2e3b05eSBin Meng return -ENODEV; 28a2e3b05eSBin Meng 29a2e3b05eSBin Meng /* Initialize LPC interface to turn on superio chipset decode range */ 30a2e3b05eSBin Meng dm_pci_write_config16(pch, LPC_IO_DEC, COMA_DEC_RANGE | COMB_DEC_RANGE); 31a2e3b05eSBin Meng dm_pci_write_config16(pch, LPC_EN, KBC_LPC_EN | COMA_LPC_EN); 32a2e3b05eSBin Meng dm_pci_write_config32(pch, LPC_GEN1_DEC, GEN_DEC_RANGE_256B | 33a2e3b05eSBin Meng (SIO1007_IOPORT3 & 0xff00) | GEN_DEC_RANGE_EN); 34a2e3b05eSBin Meng dm_pci_write_config32(pch, LPC_GEN2_DEC, GEN_DEC_RANGE_16B | 35a2e3b05eSBin Meng SIO1007_RUNTIME_IOPORT | GEN_DEC_RANGE_EN); 36a2e3b05eSBin Meng 37a2e3b05eSBin Meng /* Enable legacy serial port at 0x3f8 */ 38a2e3b05eSBin Meng sio1007_enable_serial(SIO1007_IOPORT3, 0, UART0_BASE, UART0_IRQ); 39a2e3b05eSBin Meng 40a2e3b05eSBin Meng /* Enable SIO1007 runtime I/O port at 0x180 */ 41a2e3b05eSBin Meng sio1007_enable_runtime(SIO1007_IOPORT3, SIO1007_RUNTIME_IOPORT); 42a2e3b05eSBin Meng 43a2e3b05eSBin Meng /* 44a2e3b05eSBin Meng * On Cougar Canyon 2 board, the RS232 transiver connected to serial 45a2e3b05eSBin Meng * port 0 (0x3f8) is controlled by a GPIO pin (GPIO10) on the SIO1007. 46a2e3b05eSBin Meng * Set the pin value to 1 to enable the RS232 transiver. 47a2e3b05eSBin Meng */ 48a2e3b05eSBin Meng sio1007_gpio_config(SIO1007_IOPORT3, 0, GPIO_DIR_OUTPUT, 49a2e3b05eSBin Meng GPIO_POL_NO_INVERT, GPIO_TYPE_PUSH_PULL); 50a2e3b05eSBin Meng sio1007_gpio_set_value(SIO1007_RUNTIME_IOPORT, 0, 1); 51a2e3b05eSBin Meng 52a2e3b05eSBin Meng return 0; 53a2e3b05eSBin Meng } 54