/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (C) 2017 Intel Corporation. * Take from coreboot project file of the same name */ #ifndef _ASM_ARCH_LPC_H #define _ASM_ARCH_LPC_H #include <linux/bitops.h> #define LPC_SERIRQ_CTL 0x64 #define LPC_SCNT_EN BIT(7) #define LPC_SCNT_MODE BIT(6) #define LPC_IO_DECODE 0x80 #define LPC_IOD_COMA_RANGE (0 << 0) /* 0x3F8 - 0x3FF COMA*/ #define LPC_IOD_COMB_RANGE (1 << 4) /* 0x2F8 - 0x2FF COMB*/ /* * Use IO_<peripheral>_<IO port> style macros defined in lpc_lib.h * to enable decoding of I/O locations for a peripheral */ #define LPC_IO_ENABLES 0x82 #define LPC_GENERIC_IO_RANGE(n) ((((n) & 0x3) * 4) + 0x84) #define LPC_LGIR_AMASK_MASK (0xfc << 16) #define LPC_LGIR_ADDR_MASK 0xfffc #define LPC_LGIR_EN BIT(0) #define LPC_LGIR_MAX_WINDOW_SIZE 256 #define LPC_GENERIC_MEM_RANGE 0x98 #define LPC_LGMR_ADDR_MASK 0xffff0000 #define LPC_LGMR_EN BIT(0) #define LPC_LGMR_WINDOW_SIZE (64 * KiB) #define LPC_BIOS_CNTL 0xdc #define LPC_BC_BILD BIT(7) #define LPC_BC_LE BIT(1) #define LPC_BC_EISS BIT(5) #define LPC_PCCTL 0xE0 /* PCI Clock Control */ #define LPC_PCCTL_CLKRUN_EN BIT(0) /* * IO decode enable macros are in the format IO_<peripheral>_<IO port>. * For example, to open ports 0x60, 0x64 for the keyboard controller, * use IOE_KBC_60_64 macro. For IOE_ macros that do not specify a port range, * the port range is selectable via the IO decodes register. */ #define LPC_IOE_EC_4E_4F BIT(13) #define LPC_IOE_SUPERIO_2E_2F BIT(12) #define LPC_IOE_EC_62_66 BIT(11) #define LPC_IOE_KBC_60_64 BIT(10) #define LPC_IOE_HGE_208 BIT(9) #define LPC_IOE_LGE_200 BIT(8) #define LPC_IOE_FDD_EN BIT(3) #define LPC_IOE_LPT_EN BIT(2) #define LPC_IOE_COMB_EN BIT(1) #define LPC_IOE_COMA_EN BIT(0) #define LPC_NUM_GENERIC_IO_RANGES 4 #define LPC_IO_ENABLES 0x82 /** * lpc_enable_fixed_io_ranges() - enable the fixed I/O ranges * * @io_enables: Mask of things to enable (LPC_IOE_.) */ void lpc_enable_fixed_io_ranges(uint io_enables); /** * lpc_open_pmio_window() - Open an IO port range * * @base: Base I/O address (e.g. 0x800) * @size: Size of window (e.g. 0x100) * Return: 0 if OK, -ENOSPC if there are no more windows available, -EALREADY * if already set up */ int lpc_open_pmio_window(uint base, uint size); /** * lpc_io_setup_comm_a_b() - Set up basic serial UARTs * * Set up the LPC to handle I/O to the COMA/COMB serial UART addresses * 2f8-2ff and 3f8-3ff. */ void lpc_io_setup_comm_a_b(void); #endif