1*8c30b571SSimon Glass /* 2*8c30b571SSimon Glass * Copyright (c) 2016 Google, Inc 3*8c30b571SSimon Glass * 4*8c30b571SSimon Glass * SPDX-License-Identifier: GPL-2.0 5*8c30b571SSimon Glass */ 6*8c30b571SSimon Glass 7*8c30b571SSimon Glass #ifndef __ASM_LPC_COMMON_H 8*8c30b571SSimon Glass #define __ASM_LPC_COMMON_H 9*8c30b571SSimon Glass 10*8c30b571SSimon Glass #define PCH_RCBA_BASE 0xf0 11*8c30b571SSimon Glass 12*8c30b571SSimon Glass #define RC 0x3400 /* 32bit */ 13*8c30b571SSimon Glass #define GCS 0x3410 /* 32bit */ 14*8c30b571SSimon Glass 15*8c30b571SSimon Glass #define PMBASE 0x40 16*8c30b571SSimon Glass #define ACPI_CNTL 0x44 17*8c30b571SSimon Glass 18*8c30b571SSimon Glass #define LPC_IO_DEC 0x80 /* IO Decode Ranges Register */ 19*8c30b571SSimon Glass #define COMB_DEC_RANGE (1 << 4) /* 0x2f8-0x2ff (COM2) */ 20*8c30b571SSimon Glass #define COMA_DEC_RANGE (0 << 0) /* 0x3f8-0x3ff (COM1) */ 21*8c30b571SSimon Glass #define LPC_EN 0x82 /* LPC IF Enables Register */ 22*8c30b571SSimon Glass #define CNF2_LPC_EN (1 << 13) /* 0x4e/0x4f */ 23*8c30b571SSimon Glass #define CNF1_LPC_EN (1 << 12) /* 0x2e/0x2f */ 24*8c30b571SSimon Glass #define MC_LPC_EN (1 << 11) /* 0x62/0x66 */ 25*8c30b571SSimon Glass #define KBC_LPC_EN (1 << 10) /* 0x60/0x64 */ 26*8c30b571SSimon Glass #define GAMEH_LPC_EN (1 << 9) /* 0x208/0x20f */ 27*8c30b571SSimon Glass #define GAMEL_LPC_EN (1 << 8) /* 0x200/0x207 */ 28*8c30b571SSimon Glass #define FDD_LPC_EN (1 << 3) /* LPC_IO_DEC[12] */ 29*8c30b571SSimon Glass #define LPT_LPC_EN (1 << 2) /* LPC_IO_DEC[9:8] */ 30*8c30b571SSimon Glass #define COMB_LPC_EN (1 << 1) /* LPC_IO_DEC[6:4] */ 31*8c30b571SSimon Glass #define COMA_LPC_EN (1 << 0) /* LPC_IO_DEC[3:2] */ 32*8c30b571SSimon Glass #define LPC_GEN1_DEC 0x84 /* LPC IF Generic Decode Range 1 */ 33*8c30b571SSimon Glass #define LPC_GEN2_DEC 0x88 /* LPC IF Generic Decode Range 2 */ 34*8c30b571SSimon Glass #define LPC_GEN3_DEC 0x8c /* LPC IF Generic Decode Range 3 */ 35*8c30b571SSimon Glass #define LPC_GEN4_DEC 0x90 /* LPC IF Generic Decode Range 4 */ 36*8c30b571SSimon Glass #define LPC_GENX_DEC(x) (0x84 + 4 * (x)) 37*8c30b571SSimon Glass #define GEN_DEC_RANGE_256B 0xfc0000 /* 256 Bytes */ 38*8c30b571SSimon Glass #define GEN_DEC_RANGE_128B 0x7c0000 /* 128 Bytes */ 39*8c30b571SSimon Glass #define GEN_DEC_RANGE_64B 0x3c0000 /* 64 Bytes */ 40*8c30b571SSimon Glass #define GEN_DEC_RANGE_32B 0x1c0000 /* 32 Bytes */ 41*8c30b571SSimon Glass #define GEN_DEC_RANGE_16B 0x0c0000 /* 16 Bytes */ 42*8c30b571SSimon Glass #define GEN_DEC_RANGE_8B 0x040000 /* 8 Bytes */ 43*8c30b571SSimon Glass #define GEN_DEC_RANGE_4B 0x000000 /* 4 Bytes */ 44*8c30b571SSimon Glass #define GEN_DEC_RANGE_EN (1 << 0) /* Range Enable */ 45*8c30b571SSimon Glass 46*8c30b571SSimon Glass /** 47*8c30b571SSimon Glass * lpc_common_early_init() - Set up common LPC init 48*8c30b571SSimon Glass * 49*8c30b571SSimon Glass * This sets up the legacy decode areas, GEN_DEC, SPI prefetch and Port80. It 50*8c30b571SSimon Glass * also puts the RCB in the correct place so that RCB_REG() works. 51*8c30b571SSimon Glass * 52*8c30b571SSimon Glass * @dev: LPC device (a child of the PCH) 53*8c30b571SSimon Glass * @return 0 on success, -ve on error 54*8c30b571SSimon Glass */ 55*8c30b571SSimon Glass int lpc_common_early_init(struct udevice *dev); 56*8c30b571SSimon Glass 57*8c30b571SSimon Glass int lpc_set_spi_protect(struct udevice *dev, int bios_ctrl, bool protect); 58*8c30b571SSimon Glass 59*8c30b571SSimon Glass #endif 60