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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2016 Google, Inc
*/
#ifndef __ASM_LPC_COMMON_H
#define __ASM_LPC_COMMON_H
#define PCH_RCBA_BASE 0xf0
#define RC 0x3400 /* 32bit */
#define GCS 0x3410 /* 32bit */
#define PMBASE 0x40
#define ACPI_CNTL 0x44
#define LPC_IO_DEC 0x80 /* IO Decode Ranges Register */
#define COMB_DEC_RANGE (1 << 4) /* 0x2f8-0x2ff (COM2) */
#define COMA_DEC_RANGE (0 << 0) /* 0x3f8-0x3ff (COM1) */
#define LPC_EN 0x82 /* LPC IF Enables Register */
#define CNF2_LPC_EN (1 << 13) /* 0x4e/0x4f */
#define CNF1_LPC_EN (1 << 12) /* 0x2e/0x2f */
#define MC_LPC_EN (1 << 11) /* 0x62/0x66 */
#define KBC_LPC_EN (1 << 10) /* 0x60/0x64 */
#define GAMEH_LPC_EN (1 << 9) /* 0x208/0x20f */
#define GAMEL_LPC_EN (1 << 8) /* 0x200/0x207 */
#define FDD_LPC_EN (1 << 3) /* LPC_IO_DEC[12] */
#define LPT_LPC_EN (1 << 2) /* LPC_IO_DEC[9:8] */
#define COMB_LPC_EN (1 << 1) /* LPC_IO_DEC[6:4] */
#define COMA_LPC_EN (1 << 0) /* LPC_IO_DEC[3:2] */
#define LPC_GEN1_DEC 0x84 /* LPC IF Generic Decode Range 1 */
#define LPC_GEN2_DEC 0x88 /* LPC IF Generic Decode Range 2 */
#define LPC_GEN3_DEC 0x8c /* LPC IF Generic Decode Range 3 */
#define LPC_GEN4_DEC 0x90 /* LPC IF Generic Decode Range 4 */
#define LPC_GENX_DEC(x) (0x84 + 4 * (x))
#define GEN_DEC_RANGE_256B 0xfc0000 /* 256 Bytes */
#define GEN_DEC_RANGE_128B 0x7c0000 /* 128 Bytes */
#define GEN_DEC_RANGE_64B 0x3c0000 /* 64 Bytes */
#define GEN_DEC_RANGE_32B 0x1c0000 /* 32 Bytes */
#define GEN_DEC_RANGE_16B 0x0c0000 /* 16 Bytes */
#define GEN_DEC_RANGE_8B 0x040000 /* 8 Bytes */
#define GEN_DEC_RANGE_4B 0x000000 /* 4 Bytes */
#define GEN_DEC_RANGE_EN (1 << 0) /* Range Enable */
/**
* lpc_common_early_init() - Set up common LPC init
*
* This sets up the legacy decode areas, GEN_DEC, SPI prefetch and Port80. It
* also puts the RCB in the correct place so that RCB_REG() works.
*
* @dev: LPC device (a child of the PCH)
* @return 0 on success, -ve on error
*/
int lpc_common_early_init(struct udevice *dev);
int lpc_set_spi_protect(struct udevice *dev, int bios_ctrl, bool protect);
#endif
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