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