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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (c) 2011 The Chromium OS Authors.
*
* This file is derived from the flashrom project.
*/
#ifndef _ICH_H_
#define _ICH_H_
#include <linux/bitops.h>
struct ich7_spi_regs {
uint16_t spis;
uint16_t spic;
uint32_t spia;
uint64_t spid[8];
uint64_t _pad;
uint32_t bbar;
uint16_t preop;
uint16_t optype;
uint8_t opmenu[8];
} __packed;
struct ich9_spi_regs {
uint32_t bfpr; /* 0x00 */
uint16_t hsfs;
uint16_t hsfc;
uint32_t faddr;
uint32_t _reserved0;
uint32_t fdata[16]; /* 0x10 */
uint32_t frap; /* 0x50 */
uint32_t freg[5];
uint32_t _reserved1[3];
uint32_t pr[5]; /* 0x74 */
uint32_t _reserved2[2];
uint8_t ssfs; /* 0x90 */
uint8_t ssfc[3];
uint16_t preop; /* 0x94 */
uint16_t optype;
uint8_t opmenu[8]; /* 0x98 */
uint32_t bbar;
uint8_t _reserved3[12];
uint32_t fdoc; /* 0xb0 */
uint32_t fdod;
uint8_t _reserved4[8];
uint32_t afc; /* 0xc0 */
uint32_t lvscc;
uint32_t uvscc;
uint8_t _reserved5[4];
uint32_t fpb; /* 0xd0 */
uint8_t _reserved6[28];
uint32_t srdl; /* 0xf0 */
uint32_t srdc;
uint32_t scs;
uint32_t bcr;
} __packed;
enum {
SPIS_SCIP = 0x0001,
SPIS_GRANT = 0x0002,
SPIS_CDS = 0x0004,
SPIS_FCERR = 0x0008,
SSFS_AEL = 0x0010,
SPIS_LOCK = 0x8000,
SPIS_RESERVED_MASK = 0x7ff0,
SSFS_RESERVED_MASK = 0x7fe2
};
enum {
SPIC_SCGO = 0x000002,
SPIC_ACS = 0x000004,
SPIC_SPOP = 0x000008,
SPIC_DBC = 0x003f00,
SPIC_DS = 0x004000,
SPIC_SME = 0x008000,
SSFC_SCF_MASK = 0x070000,
SSFC_RESERVED = 0xf80000,
/* Mask for speed byte, biuts 23:16 of SSFC */
SSFC_SCF_33MHZ = 0x01,
};
enum {
HSFS_FDONE = 0x0001,
HSFS_FCERR = 0x0002,
HSFS_AEL = 0x0004,
HSFS_BERASE_MASK = 0x0018,
HSFS_BERASE_SHIFT = 3,
HSFS_SCIP = 0x0020,
HSFS_FDOPSS = 0x2000,
HSFS_FDV = 0x4000,
HSFS_FLOCKDN = 0x8000
};
enum {
HSFC_FGO = 0x0001,
HSFC_FCYCLE_MASK = 0x0006,
HSFC_FCYCLE_SHIFT = 1,
HSFC_FDBC_MASK = 0x3f00,
HSFC_FDBC_SHIFT = 8,
HSFC_FSMIE = 0x8000
};
struct spi_trans {
uint8_t cmd;
const uint8_t *out;
uint32_t bytesout;
uint8_t *in;
uint32_t bytesin;
uint8_t type;
uint8_t opcode;
uint32_t offset;
};
#define SPI_OPCODE_WRSR 0x01
#define SPI_OPCODE_PAGE_PROGRAM 0x02
#define SPI_OPCODE_READ 0x03
#define SPI_OPCODE_WRDIS 0x04
#define SPI_OPCODE_RDSR 0x05
#define SPI_OPCODE_WREN 0x06
#define SPI_OPCODE_FAST_READ 0x0b
#define SPI_OPCODE_ERASE_SECT 0x20
#define SPI_OPCODE_READ_ID 0x9f
#define SPI_OPCODE_ERASE_BLOCK 0xd8
#define SPI_OPCODE_TYPE_READ_NO_ADDRESS 0
#define SPI_OPCODE_TYPE_WRITE_NO_ADDRESS 1
#define SPI_OPCODE_TYPE_READ_WITH_ADDRESS 2
#define SPI_OPCODE_TYPE_WRITE_WITH_ADDRESS 3
#define SPI_OPMENU_0 SPI_OPCODE_WRSR
#define SPI_OPTYPE_0 SPI_OPCODE_TYPE_WRITE_NO_ADDRESS
#define SPI_OPMENU_1 SPI_OPCODE_PAGE_PROGRAM
#define SPI_OPTYPE_1 SPI_OPCODE_TYPE_WRITE_WITH_ADDRESS
#define SPI_OPMENU_2 SPI_OPCODE_READ
#define SPI_OPTYPE_2 SPI_OPCODE_TYPE_READ_WITH_ADDRESS
#define SPI_OPMENU_3 SPI_OPCODE_RDSR
#define SPI_OPTYPE_3 SPI_OPCODE_TYPE_READ_NO_ADDRESS
#define SPI_OPMENU_4 SPI_OPCODE_ERASE_SECT
#define SPI_OPTYPE_4 SPI_OPCODE_TYPE_WRITE_WITH_ADDRESS
#define SPI_OPMENU_5 SPI_OPCODE_READ_ID
#define SPI_OPTYPE_5 SPI_OPCODE_TYPE_READ_NO_ADDRESS
#define SPI_OPMENU_6 SPI_OPCODE_ERASE_BLOCK
#define SPI_OPTYPE_6 SPI_OPCODE_TYPE_WRITE_WITH_ADDRESS
#define SPI_OPMENU_7 SPI_OPCODE_FAST_READ
#define SPI_OPTYPE_7 SPI_OPCODE_TYPE_READ_WITH_ADDRESS
#define SPI_OPPREFIX ((SPI_OPCODE_WREN << 8) | SPI_OPCODE_WREN)
#define SPI_OPTYPE ((SPI_OPTYPE_7 << 14) | (SPI_OPTYPE_6 << 12) | \
(SPI_OPTYPE_5 << 10) | (SPI_OPTYPE_4 << 8) | \
(SPI_OPTYPE_3 << 6) | (SPI_OPTYPE_2 << 4) | \
(SPI_OPTYPE_1 << 2) | (SPI_OPTYPE_0 << 0))
#define SPI_OPMENU_UPPER ((SPI_OPMENU_7 << 24) | (SPI_OPMENU_6 << 16) | \
(SPI_OPMENU_5 << 8) | (SPI_OPMENU_4 << 0))
#define SPI_OPMENU_LOWER ((SPI_OPMENU_3 << 24) | (SPI_OPMENU_2 << 16) | \
(SPI_OPMENU_1 << 8) | (SPI_OPMENU_0 << 0))
#define ICH_BOUNDARY 0x1000
#define HSFSTS_FDBC_SHIFT 24
#define HSFSTS_FDBC_MASK (0x3f << HSFSTS_FDBC_SHIFT)
#define HSFSTS_WET BIT(21)
#define HSFSTS_FCYCLE_SHIFT 17
#define HSFSTS_FCYCLE_MASK (0xf << HSFSTS_FCYCLE_SHIFT)
/* Supported flash cycle types */
enum hsfsts_cycle_t {
HSFSTS_CYCLE_READ = 0,
HSFSTS_CYCLE_WRITE = 2,
HSFSTS_CYCLE_4K_ERASE,
HSFSTS_CYCLE_64K_ERASE,
HSFSTS_CYCLE_RDSFDP,
HSFSTS_CYCLE_RDID,
HSFSTS_CYCLE_WR_STATUS,
HSFSTS_CYCLE_RD_STATUS,
};
#define HSFSTS_FGO BIT(16)
#define HSFSTS_FLOCKDN BIT(15)
#define HSFSTS_FDV BIT(14)
#define HSFSTS_FDOPSS BIT(13)
#define HSFSTS_WRSDIS BIT(11)
#define HSFSTS_SAF_CE BIT(8)
#define HSFSTS_SAF_ACTIVE BIT(7)
#define HSFSTS_SAF_LE BIT(6)
#define HSFSTS_SCIP BIT(5)
#define HSFSTS_SAF_DLE BIT(4)
#define HSFSTS_SAF_ERROR BIT(3)
#define HSFSTS_AEL BIT(2)
#define HSFSTS_FCERR BIT(1)
#define HSFSTS_FDONE BIT(0)
#define HSFSTS_W1C_BITS 0xff
/* Maximum bytes of data that can fit in FDATAn (0x10) registers */
#define SPIBAR_FDATA_FIFO_SIZE 0x40
#define SPIBAR_HWSEQ_XFER_TIMEOUT_MS 5000
enum ich_version {
ICHV_7,
ICHV_9,
ICHV_APL,
};
struct ich_spi_priv {
int opmenu;
int menubytes;
void *base; /* Base of register set */
int preop;
int optype;
int addr;
int data;
unsigned databytes;
int status;
int control;
int bbar;
int bcr;
uint32_t *pr; /* only for ich9 */
int speed; /* pointer to speed control */
ulong max_speed; /* Maximum bus speed in MHz */
ulong cur_speed; /* Current bus speed */
struct spi_trans trans; /* current transaction in progress */
struct udevice *pch; /* PCH, used to control SPI access */
};
#endif /* _ICH_H_ */
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