/*
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* (C) Copyright 2009
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* Vipin Kumar, ST Micoelectronics, vipin.kumar@st.com.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef ST_SMI_H
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#define ST_SMI_H
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/* 0xF800.0000 . 0xFBFF.FFFF 64MB SMI (Serial Flash Mem) */
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/* 0xFC00.0000 . 0xFC1F.FFFF 2MB SMI (Serial Flash Reg.) */
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#define FLASH_START_ADDRESS CONFIG_SYS_FLASH_BASE
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#define FLASH_BANK_SIZE CONFIG_SYS_FLASH_BANK_SIZE
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#define SMIBANK0_BASE (FLASH_START_ADDRESS)
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#define SMIBANK1_BASE (SMIBANK0_BASE + FLASH_BANK_SIZE)
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#define SMIBANK2_BASE (SMIBANK1_BASE + FLASH_BANK_SIZE)
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#define SMIBANK3_BASE (SMIBANK2_BASE + FLASH_BANK_SIZE)
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#define BANK0 0
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#define BANK1 1
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#define BANK2 2
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#define BANK3 3
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struct smi_regs {
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u32 smi_cr1;
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u32 smi_cr2;
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u32 smi_sr;
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u32 smi_tr;
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u32 smi_rr;
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};
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/* CONTROL REG 1 */
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#define BANK_EN 0x0000000F /* enables all banks */
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#define DSEL_TIME 0x00000060 /* Deselect time */
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#define PRESCAL5 0x00000500 /* AHB_CK prescaling value */
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#define PRESCALA 0x00000A00 /* AHB_CK prescaling value */
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#define PRESCAL3 0x00000300 /* AHB_CK prescaling value */
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#define PRESCAL4 0x00000400 /* AHB_CK prescaling value */
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#define SW_MODE 0x10000000 /* enables SW Mode */
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#define WB_MODE 0x20000000 /* Write Burst Mode */
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#define FAST_MODE 0x00008000 /* Fast Mode */
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#define HOLD1 0x00010000
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/* CONTROL REG 2 */
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#define RD_STATUS_REG 0x00000400 /* reads status reg */
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#define WE 0x00000800 /* Write Enable */
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#define BANK0_SEL 0x00000000 /* Select Banck0 */
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#define BANK1_SEL 0x00001000 /* Select Banck1 */
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#define BANK2_SEL 0x00002000 /* Select Banck2 */
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#define BANK3_SEL 0x00003000 /* Select Banck3 */
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#define BANKSEL_SHIFT 12
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#define SEND 0x00000080 /* Send data */
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#define TX_LEN_1 0x00000001 /* data length = 1 byte */
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#define TX_LEN_2 0x00000002 /* data length = 2 byte */
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#define TX_LEN_3 0x00000003 /* data length = 3 byte */
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#define TX_LEN_4 0x00000004 /* data length = 4 byte */
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#define RX_LEN_1 0x00000010 /* data length = 1 byte */
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#define RX_LEN_2 0x00000020 /* data length = 2 byte */
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#define RX_LEN_3 0x00000030 /* data length = 3 byte */
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#define RX_LEN_4 0x00000040 /* data length = 4 byte */
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#define TFIE 0x00000100 /* Tx Flag Interrupt Enable */
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#define WCIE 0x00000200 /* WCF Interrupt Enable */
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/* STATUS_REG */
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#define INT_WCF_CLR 0xFFFFFDFF /* clear: WCF clear */
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#define INT_TFF_CLR 0xFFFFFEFF /* clear: TFF clear */
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#define WIP_BIT 0x00000001 /* WIP Bit of SPI SR */
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#define WEL_BIT 0x00000002 /* WEL Bit of SPI SR */
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#define RSR 0x00000005 /* Read Status regiser */
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#define TFF 0x00000100 /* Transfer Finished FLag */
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#define WCF 0x00000200 /* Transfer Finished FLag */
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#define ERF1 0x00000400 /* Error Flag 1 */
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#define ERF2 0x00000800 /* Error Flag 2 */
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#define WM0 0x00001000 /* WM Bank 0 */
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#define WM1 0x00002000 /* WM Bank 1 */
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#define WM2 0x00004000 /* WM Bank 2 */
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#define WM3 0x00008000 /* WM Bank 3 */
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#define WM_SHIFT 12
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/* TR REG */
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#define READ_ID 0x0000009F /* Read Identification */
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#define BULK_ERASE 0x000000C7 /* BULK erase */
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#define SECTOR_ERASE 0x000000D8 /* SECTOR erase */
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#define WRITE_ENABLE 0x00000006 /* Wenable command to FLASH */
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struct flash_dev {
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u32 density;
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ulong size;
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ushort sector_count;
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};
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#define SFLASH_PAGE_SIZE 0x100 /* flash page size */
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#define XFER_FINISH_TOUT 15 /* xfer finish timeout(in ms) */
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#define WMODE_TOUT 15 /* write enable timeout(in ms) */
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extern void smi_init(void);
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#endif
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