| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <bootblock_common.h> |
| #include <device/mmio.h> |
| #include <device/pci_ops.h> |
| #include <soc/gpio.h> |
| #include <soc/lpc.h> |
| #include <soc/pci_devs.h> |
| |
| void bootblock_mainboard_early_init(void) |
| { |
| uint32_t reg; |
| uint32_t *pad_config_reg; |
| |
| /* Enable the UART hardware for COM1. */ |
| reg = 1; |
| pci_write_config32(PCI_DEV(0, LPC_DEV, 0), UART_CONT, reg); |
| |
| /* |
| * Set up the pads to select the UART function |
| * AD12 SW16(UART1_DATAIN/UART0_DATAIN) - Set Mode 2 for UART0_RXD |
| * AD10 SW20(UART1_DATAOUT/UART0_DATAOUT) - Set Mode 2 for UART0_TXD |
| */ |
| pad_config_reg = gpio_pad_config_reg(GP_SOUTHWEST, UART1_RXD_PAD); |
| write32(pad_config_reg, SET_PAD_MODE_SELECTION(PAD_CONFIG0_DEFAULT0, |
| M2)); |
| |
| pad_config_reg = gpio_pad_config_reg(GP_SOUTHWEST, UART1_TXD_PAD); |
| write32(pad_config_reg, SET_PAD_MODE_SELECTION(PAD_CONFIG0_DEFAULT0, |
| M2)); |
| } |