upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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1244 lines
35 KiB
1244 lines
35 KiB
/*
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* Copyright 2013-2015 Freescale Semiconductor, Inc.
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*
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* Freescale Quad Serial Peripheral Interface (QSPI) driver
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <malloc.h>
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#include <spi.h>
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#include <asm/io.h>
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#include <linux/sizes.h>
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#include <dm.h>
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#include <errno.h>
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#include <watchdog.h>
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#include <wait_bit.h>
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#include "fsl_qspi.h"
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DECLARE_GLOBAL_DATA_PTR;
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#define RX_BUFFER_SIZE 0x80
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#ifdef CONFIG_MX6SX
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#define TX_BUFFER_SIZE 0x200
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#else
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#define TX_BUFFER_SIZE 0x40
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#endif
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#define OFFSET_BITS_MASK GENMASK(23, 0)
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#define FLASH_STATUS_WEL 0x02
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/* SEQID */
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#define SEQID_WREN 1
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#define SEQID_FAST_READ 2
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#define SEQID_RDSR 3
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#define SEQID_SE 4
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#define SEQID_CHIP_ERASE 5
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#define SEQID_PP 6
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#define SEQID_RDID 7
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#define SEQID_BE_4K 8
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#ifdef CONFIG_SPI_FLASH_BAR
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#define SEQID_BRRD 9
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#define SEQID_BRWR 10
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#define SEQID_RDEAR 11
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#define SEQID_WREAR 12
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#endif
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#define SEQID_WRAR 13
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#define SEQID_RDAR 14
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/* QSPI CMD */
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#define QSPI_CMD_PP 0x02 /* Page program (up to 256 bytes) */
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#define QSPI_CMD_RDSR 0x05 /* Read status register */
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#define QSPI_CMD_WREN 0x06 /* Write enable */
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#define QSPI_CMD_FAST_READ 0x0b /* Read data bytes (high frequency) */
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#define QSPI_CMD_BE_4K 0x20 /* 4K erase */
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#define QSPI_CMD_CHIP_ERASE 0xc7 /* Erase whole flash chip */
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#define QSPI_CMD_SE 0xd8 /* Sector erase (usually 64KiB) */
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#define QSPI_CMD_RDID 0x9f /* Read JEDEC ID */
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/* Used for Micron, winbond and Macronix flashes */
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#define QSPI_CMD_WREAR 0xc5 /* EAR register write */
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#define QSPI_CMD_RDEAR 0xc8 /* EAR reigster read */
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/* Used for Spansion flashes only. */
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#define QSPI_CMD_BRRD 0x16 /* Bank register read */
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#define QSPI_CMD_BRWR 0x17 /* Bank register write */
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/* Used for Spansion S25FS-S family flash only. */
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#define QSPI_CMD_RDAR 0x65 /* Read any device register */
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#define QSPI_CMD_WRAR 0x71 /* Write any device register */
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/* 4-byte address QSPI CMD - used on Spansion and some Macronix flashes */
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#define QSPI_CMD_FAST_READ_4B 0x0c /* Read data bytes (high frequency) */
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#define QSPI_CMD_PP_4B 0x12 /* Page program (up to 256 bytes) */
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#define QSPI_CMD_SE_4B 0xdc /* Sector erase (usually 64KiB) */
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/* fsl_qspi_platdata flags */
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#define QSPI_FLAG_REGMAP_ENDIAN_BIG BIT(0)
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/* default SCK frequency, unit: HZ */
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#define FSL_QSPI_DEFAULT_SCK_FREQ 50000000
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/* QSPI max chipselect signals number */
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#define FSL_QSPI_MAX_CHIPSELECT_NUM 4
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#ifdef CONFIG_DM_SPI
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/**
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* struct fsl_qspi_platdata - platform data for Freescale QSPI
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*
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* @flags: Flags for QSPI QSPI_FLAG_...
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* @speed_hz: Default SCK frequency
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* @reg_base: Base address of QSPI registers
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* @amba_base: Base address of QSPI memory mapping
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* @amba_total_size: size of QSPI memory mapping
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* @flash_num: Number of active slave devices
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* @num_chipselect: Number of QSPI chipselect signals
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*/
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struct fsl_qspi_platdata {
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u32 flags;
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u32 speed_hz;
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fdt_addr_t reg_base;
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fdt_addr_t amba_base;
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fdt_size_t amba_total_size;
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u32 flash_num;
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u32 num_chipselect;
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};
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#endif
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/**
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* struct fsl_qspi_priv - private data for Freescale QSPI
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*
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* @flags: Flags for QSPI QSPI_FLAG_...
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* @bus_clk: QSPI input clk frequency
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* @speed_hz: Default SCK frequency
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* @cur_seqid: current LUT table sequence id
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* @sf_addr: flash access offset
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* @amba_base: Base address of QSPI memory mapping of every CS
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* @amba_total_size: size of QSPI memory mapping
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* @cur_amba_base: Base address of QSPI memory mapping of current CS
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* @flash_num: Number of active slave devices
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* @num_chipselect: Number of QSPI chipselect signals
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* @regs: Point to QSPI register structure for I/O access
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*/
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struct fsl_qspi_priv {
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u32 flags;
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u32 bus_clk;
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u32 speed_hz;
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u32 cur_seqid;
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u32 sf_addr;
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u32 amba_base[FSL_QSPI_MAX_CHIPSELECT_NUM];
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u32 amba_total_size;
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u32 cur_amba_base;
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u32 flash_num;
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u32 num_chipselect;
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struct fsl_qspi_regs *regs;
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};
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#ifndef CONFIG_DM_SPI
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struct fsl_qspi {
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struct spi_slave slave;
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struct fsl_qspi_priv priv;
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};
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#endif
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static u32 qspi_read32(u32 flags, u32 *addr)
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{
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return flags & QSPI_FLAG_REGMAP_ENDIAN_BIG ?
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in_be32(addr) : in_le32(addr);
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}
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static void qspi_write32(u32 flags, u32 *addr, u32 val)
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{
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flags & QSPI_FLAG_REGMAP_ENDIAN_BIG ?
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out_be32(addr, val) : out_le32(addr, val);
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}
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/* QSPI support swapping the flash read/write data
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* in hardware for LS102xA, but not for VF610 */
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static inline u32 qspi_endian_xchg(u32 data)
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{
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#ifdef CONFIG_VF610
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return swab32(data);
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#else
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return data;
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#endif
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}
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static void qspi_set_lut(struct fsl_qspi_priv *priv)
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{
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struct fsl_qspi_regs *regs = priv->regs;
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u32 lut_base;
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/* Unlock the LUT */
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qspi_write32(priv->flags, ®s->lutkey, LUT_KEY_VALUE);
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qspi_write32(priv->flags, ®s->lckcr, QSPI_LCKCR_UNLOCK);
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/* Write Enable */
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lut_base = SEQID_WREN * 4;
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qspi_write32(priv->flags, ®s->lut[lut_base], OPRND0(QSPI_CMD_WREN) |
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PAD0(LUT_PAD1) | INSTR0(LUT_CMD));
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qspi_write32(priv->flags, ®s->lut[lut_base + 1], 0);
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qspi_write32(priv->flags, ®s->lut[lut_base + 2], 0);
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qspi_write32(priv->flags, ®s->lut[lut_base + 3], 0);
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/* Fast Read */
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lut_base = SEQID_FAST_READ * 4;
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#ifdef CONFIG_SPI_FLASH_BAR
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qspi_write32(priv->flags, ®s->lut[lut_base],
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OPRND0(QSPI_CMD_FAST_READ) | PAD0(LUT_PAD1) |
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INSTR0(LUT_CMD) | OPRND1(ADDR24BIT) |
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PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
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#else
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if (FSL_QSPI_FLASH_SIZE <= SZ_16M)
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qspi_write32(priv->flags, ®s->lut[lut_base],
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OPRND0(QSPI_CMD_FAST_READ) | PAD0(LUT_PAD1) |
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INSTR0(LUT_CMD) | OPRND1(ADDR24BIT) |
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PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
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else
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qspi_write32(priv->flags, ®s->lut[lut_base],
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OPRND0(QSPI_CMD_FAST_READ_4B) |
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PAD0(LUT_PAD1) | INSTR0(LUT_CMD) |
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OPRND1(ADDR32BIT) | PAD1(LUT_PAD1) |
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INSTR1(LUT_ADDR));
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#endif
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qspi_write32(priv->flags, ®s->lut[lut_base + 1],
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OPRND0(8) | PAD0(LUT_PAD1) | INSTR0(LUT_DUMMY) |
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OPRND1(RX_BUFFER_SIZE) | PAD1(LUT_PAD1) |
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INSTR1(LUT_READ));
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qspi_write32(priv->flags, ®s->lut[lut_base + 2], 0);
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qspi_write32(priv->flags, ®s->lut[lut_base + 3], 0);
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/* Read Status */
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lut_base = SEQID_RDSR * 4;
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qspi_write32(priv->flags, ®s->lut[lut_base], OPRND0(QSPI_CMD_RDSR) |
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PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(1) |
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PAD1(LUT_PAD1) | INSTR1(LUT_READ));
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qspi_write32(priv->flags, ®s->lut[lut_base + 1], 0);
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qspi_write32(priv->flags, ®s->lut[lut_base + 2], 0);
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qspi_write32(priv->flags, ®s->lut[lut_base + 3], 0);
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/* Erase a sector */
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lut_base = SEQID_SE * 4;
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#ifdef CONFIG_SPI_FLASH_BAR
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qspi_write32(priv->flags, ®s->lut[lut_base], OPRND0(QSPI_CMD_SE) |
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PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(ADDR24BIT) |
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PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
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#else
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if (FSL_QSPI_FLASH_SIZE <= SZ_16M)
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qspi_write32(priv->flags, ®s->lut[lut_base],
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OPRND0(QSPI_CMD_SE) | PAD0(LUT_PAD1) |
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INSTR0(LUT_CMD) | OPRND1(ADDR24BIT) |
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PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
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else
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qspi_write32(priv->flags, ®s->lut[lut_base],
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OPRND0(QSPI_CMD_SE_4B) | PAD0(LUT_PAD1) |
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INSTR0(LUT_CMD) | OPRND1(ADDR32BIT) |
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PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
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#endif
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qspi_write32(priv->flags, ®s->lut[lut_base + 1], 0);
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qspi_write32(priv->flags, ®s->lut[lut_base + 2], 0);
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qspi_write32(priv->flags, ®s->lut[lut_base + 3], 0);
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/* Erase the whole chip */
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lut_base = SEQID_CHIP_ERASE * 4;
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qspi_write32(priv->flags, ®s->lut[lut_base],
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OPRND0(QSPI_CMD_CHIP_ERASE) |
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PAD0(LUT_PAD1) | INSTR0(LUT_CMD));
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qspi_write32(priv->flags, ®s->lut[lut_base + 1], 0);
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qspi_write32(priv->flags, ®s->lut[lut_base + 2], 0);
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qspi_write32(priv->flags, ®s->lut[lut_base + 3], 0);
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/* Page Program */
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lut_base = SEQID_PP * 4;
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#ifdef CONFIG_SPI_FLASH_BAR
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qspi_write32(priv->flags, ®s->lut[lut_base], OPRND0(QSPI_CMD_PP) |
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PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(ADDR24BIT) |
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PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
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#else
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if (FSL_QSPI_FLASH_SIZE <= SZ_16M)
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qspi_write32(priv->flags, ®s->lut[lut_base],
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OPRND0(QSPI_CMD_PP) | PAD0(LUT_PAD1) |
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INSTR0(LUT_CMD) | OPRND1(ADDR24BIT) |
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PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
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else
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qspi_write32(priv->flags, ®s->lut[lut_base],
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OPRND0(QSPI_CMD_PP_4B) | PAD0(LUT_PAD1) |
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INSTR0(LUT_CMD) | OPRND1(ADDR32BIT) |
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PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
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#endif
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#ifdef CONFIG_MX6SX
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/*
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* To MX6SX, OPRND0(TX_BUFFER_SIZE) can not work correctly.
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* So, Use IDATSZ in IPCR to determine the size and here set 0.
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*/
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qspi_write32(priv->flags, ®s->lut[lut_base + 1], OPRND0(0) |
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PAD0(LUT_PAD1) | INSTR0(LUT_WRITE));
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#else
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qspi_write32(priv->flags, ®s->lut[lut_base + 1],
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OPRND0(TX_BUFFER_SIZE) |
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PAD0(LUT_PAD1) | INSTR0(LUT_WRITE));
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#endif
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qspi_write32(priv->flags, ®s->lut[lut_base + 2], 0);
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qspi_write32(priv->flags, ®s->lut[lut_base + 3], 0);
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/* READ ID */
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lut_base = SEQID_RDID * 4;
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qspi_write32(priv->flags, ®s->lut[lut_base], OPRND0(QSPI_CMD_RDID) |
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PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(8) |
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PAD1(LUT_PAD1) | INSTR1(LUT_READ));
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qspi_write32(priv->flags, ®s->lut[lut_base + 1], 0);
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qspi_write32(priv->flags, ®s->lut[lut_base + 2], 0);
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qspi_write32(priv->flags, ®s->lut[lut_base + 3], 0);
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/* SUB SECTOR 4K ERASE */
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lut_base = SEQID_BE_4K * 4;
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qspi_write32(priv->flags, ®s->lut[lut_base], OPRND0(QSPI_CMD_BE_4K) |
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PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(ADDR24BIT) |
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PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
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#ifdef CONFIG_SPI_FLASH_BAR
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/*
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* BRRD BRWR RDEAR WREAR are all supported, because it is hard to
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* dynamically check whether to set BRRD BRWR or RDEAR WREAR during
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* initialization.
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*/
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lut_base = SEQID_BRRD * 4;
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qspi_write32(priv->flags, ®s->lut[lut_base], OPRND0(QSPI_CMD_BRRD) |
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PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(1) |
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PAD1(LUT_PAD1) | INSTR1(LUT_READ));
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lut_base = SEQID_BRWR * 4;
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qspi_write32(priv->flags, ®s->lut[lut_base], OPRND0(QSPI_CMD_BRWR) |
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PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(1) |
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PAD1(LUT_PAD1) | INSTR1(LUT_WRITE));
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lut_base = SEQID_RDEAR * 4;
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qspi_write32(priv->flags, ®s->lut[lut_base], OPRND0(QSPI_CMD_RDEAR) |
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PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(1) |
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PAD1(LUT_PAD1) | INSTR1(LUT_READ));
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lut_base = SEQID_WREAR * 4;
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qspi_write32(priv->flags, ®s->lut[lut_base], OPRND0(QSPI_CMD_WREAR) |
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PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(1) |
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PAD1(LUT_PAD1) | INSTR1(LUT_WRITE));
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#endif
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/*
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* Read any device register.
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* Used for Spansion S25FS-S family flash only.
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*/
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lut_base = SEQID_RDAR * 4;
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qspi_write32(priv->flags, ®s->lut[lut_base],
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OPRND0(QSPI_CMD_RDAR) | PAD0(LUT_PAD1) |
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INSTR0(LUT_CMD) | OPRND1(ADDR24BIT) |
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PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
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qspi_write32(priv->flags, ®s->lut[lut_base + 1],
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OPRND0(8) | PAD0(LUT_PAD1) | INSTR0(LUT_DUMMY) |
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OPRND1(1) | PAD1(LUT_PAD1) |
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INSTR1(LUT_READ));
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/*
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* Write any device register.
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* Used for Spansion S25FS-S family flash only.
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*/
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lut_base = SEQID_WRAR * 4;
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qspi_write32(priv->flags, ®s->lut[lut_base],
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OPRND0(QSPI_CMD_WRAR) | PAD0(LUT_PAD1) |
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INSTR0(LUT_CMD) | OPRND1(ADDR24BIT) |
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PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
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qspi_write32(priv->flags, ®s->lut[lut_base + 1],
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OPRND0(1) | PAD0(LUT_PAD1) | INSTR0(LUT_WRITE));
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/* Lock the LUT */
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qspi_write32(priv->flags, ®s->lutkey, LUT_KEY_VALUE);
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qspi_write32(priv->flags, ®s->lckcr, QSPI_LCKCR_LOCK);
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}
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#if defined(CONFIG_SYS_FSL_QSPI_AHB)
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/*
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* If we have changed the content of the flash by writing or erasing,
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* we need to invalidate the AHB buffer. If we do not do so, we may read out
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* the wrong data. The spec tells us reset the AHB domain and Serial Flash
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* domain at the same time.
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*/
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static inline void qspi_ahb_invalid(struct fsl_qspi_priv *priv)
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{
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struct fsl_qspi_regs *regs = priv->regs;
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u32 reg;
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reg = qspi_read32(priv->flags, ®s->mcr);
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reg |= QSPI_MCR_SWRSTHD_MASK | QSPI_MCR_SWRSTSD_MASK;
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qspi_write32(priv->flags, ®s->mcr, reg);
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/*
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* The minimum delay : 1 AHB + 2 SFCK clocks.
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* Delay 1 us is enough.
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*/
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udelay(1);
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reg &= ~(QSPI_MCR_SWRSTHD_MASK | QSPI_MCR_SWRSTSD_MASK);
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qspi_write32(priv->flags, ®s->mcr, reg);
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}
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/* Read out the data from the AHB buffer. */
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static inline void qspi_ahb_read(struct fsl_qspi_priv *priv, u8 *rxbuf, int len)
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{
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struct fsl_qspi_regs *regs = priv->regs;
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u32 mcr_reg;
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void *rx_addr = NULL;
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mcr_reg = qspi_read32(priv->flags, ®s->mcr);
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qspi_write32(priv->flags, ®s->mcr,
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QSPI_MCR_CLR_RXF_MASK | QSPI_MCR_CLR_TXF_MASK |
|
|
QSPI_MCR_RESERVED_MASK | QSPI_MCR_END_CFD_LE);
|
|
|
|
rx_addr = (void *)(uintptr_t)(priv->cur_amba_base + priv->sf_addr);
|
|
/* Read out the data directly from the AHB buffer. */
|
|
memcpy(rxbuf, rx_addr, len);
|
|
|
|
qspi_write32(priv->flags, ®s->mcr, mcr_reg);
|
|
}
|
|
|
|
static void qspi_enable_ddr_mode(struct fsl_qspi_priv *priv)
|
|
{
|
|
u32 reg, reg2;
|
|
struct fsl_qspi_regs *regs = priv->regs;
|
|
|
|
reg = qspi_read32(priv->flags, ®s->mcr);
|
|
/* Disable the module */
|
|
qspi_write32(priv->flags, ®s->mcr, reg | QSPI_MCR_MDIS_MASK);
|
|
|
|
/* Set the Sampling Register for DDR */
|
|
reg2 = qspi_read32(priv->flags, ®s->smpr);
|
|
reg2 &= ~QSPI_SMPR_DDRSMP_MASK;
|
|
reg2 |= (2 << QSPI_SMPR_DDRSMP_SHIFT);
|
|
qspi_write32(priv->flags, ®s->smpr, reg2);
|
|
|
|
/* Enable the module again (enable the DDR too) */
|
|
reg |= QSPI_MCR_DDR_EN_MASK;
|
|
/* Enable bit 29 for imx6sx */
|
|
reg |= BIT(29);
|
|
|
|
qspi_write32(priv->flags, ®s->mcr, reg);
|
|
}
|
|
|
|
/*
|
|
* There are two different ways to read out the data from the flash:
|
|
* the "IP Command Read" and the "AHB Command Read".
|
|
*
|
|
* The IC guy suggests we use the "AHB Command Read" which is faster
|
|
* then the "IP Command Read". (What's more is that there is a bug in
|
|
* the "IP Command Read" in the Vybrid.)
|
|
*
|
|
* After we set up the registers for the "AHB Command Read", we can use
|
|
* the memcpy to read the data directly. A "missed" access to the buffer
|
|
* causes the controller to clear the buffer, and use the sequence pointed
|
|
* by the QUADSPI_BFGENCR[SEQID] to initiate a read from the flash.
|
|
*/
|
|
static void qspi_init_ahb_read(struct fsl_qspi_priv *priv)
|
|
{
|
|
struct fsl_qspi_regs *regs = priv->regs;
|
|
|
|
/* AHB configuration for access buffer 0/1/2 .*/
|
|
qspi_write32(priv->flags, ®s->buf0cr, QSPI_BUFXCR_INVALID_MSTRID);
|
|
qspi_write32(priv->flags, ®s->buf1cr, QSPI_BUFXCR_INVALID_MSTRID);
|
|
qspi_write32(priv->flags, ®s->buf2cr, QSPI_BUFXCR_INVALID_MSTRID);
|
|
qspi_write32(priv->flags, ®s->buf3cr, QSPI_BUF3CR_ALLMST_MASK |
|
|
(0x80 << QSPI_BUF3CR_ADATSZ_SHIFT));
|
|
|
|
/* We only use the buffer3 */
|
|
qspi_write32(priv->flags, ®s->buf0ind, 0);
|
|
qspi_write32(priv->flags, ®s->buf1ind, 0);
|
|
qspi_write32(priv->flags, ®s->buf2ind, 0);
|
|
|
|
/*
|
|
* Set the default lut sequence for AHB Read.
|
|
* Parallel mode is disabled.
|
|
*/
|
|
qspi_write32(priv->flags, ®s->bfgencr,
|
|
SEQID_FAST_READ << QSPI_BFGENCR_SEQID_SHIFT);
|
|
|
|
/*Enable DDR Mode*/
|
|
qspi_enable_ddr_mode(priv);
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_SPI_FLASH_BAR
|
|
/* Bank register read/write, EAR register read/write */
|
|
static void qspi_op_rdbank(struct fsl_qspi_priv *priv, u8 *rxbuf, u32 len)
|
|
{
|
|
struct fsl_qspi_regs *regs = priv->regs;
|
|
u32 reg, mcr_reg, data, seqid;
|
|
|
|
mcr_reg = qspi_read32(priv->flags, ®s->mcr);
|
|
qspi_write32(priv->flags, ®s->mcr,
|
|
QSPI_MCR_CLR_RXF_MASK | QSPI_MCR_CLR_TXF_MASK |
|
|
QSPI_MCR_RESERVED_MASK | QSPI_MCR_END_CFD_LE);
|
|
qspi_write32(priv->flags, ®s->rbct, QSPI_RBCT_RXBRD_USEIPS);
|
|
|
|
qspi_write32(priv->flags, ®s->sfar, priv->cur_amba_base);
|
|
|
|
if (priv->cur_seqid == QSPI_CMD_BRRD)
|
|
seqid = SEQID_BRRD;
|
|
else
|
|
seqid = SEQID_RDEAR;
|
|
|
|
qspi_write32(priv->flags, ®s->ipcr,
|
|
(seqid << QSPI_IPCR_SEQID_SHIFT) | len);
|
|
|
|
/* Wait previous command complete */
|
|
while (qspi_read32(priv->flags, ®s->sr) & QSPI_SR_BUSY_MASK)
|
|
;
|
|
|
|
while (1) {
|
|
WATCHDOG_RESET();
|
|
|
|
reg = qspi_read32(priv->flags, ®s->rbsr);
|
|
if (reg & QSPI_RBSR_RDBFL_MASK) {
|
|
data = qspi_read32(priv->flags, ®s->rbdr[0]);
|
|
data = qspi_endian_xchg(data);
|
|
memcpy(rxbuf, &data, len);
|
|
qspi_write32(priv->flags, ®s->mcr,
|
|
qspi_read32(priv->flags, ®s->mcr) |
|
|
QSPI_MCR_CLR_RXF_MASK);
|
|
break;
|
|
}
|
|
}
|
|
|
|
qspi_write32(priv->flags, ®s->mcr, mcr_reg);
|
|
}
|
|
#endif
|
|
|
|
static void qspi_op_rdid(struct fsl_qspi_priv *priv, u32 *rxbuf, u32 len)
|
|
{
|
|
struct fsl_qspi_regs *regs = priv->regs;
|
|
u32 mcr_reg, rbsr_reg, data, size;
|
|
int i;
|
|
|
|
mcr_reg = qspi_read32(priv->flags, ®s->mcr);
|
|
qspi_write32(priv->flags, ®s->mcr,
|
|
QSPI_MCR_CLR_RXF_MASK | QSPI_MCR_CLR_TXF_MASK |
|
|
QSPI_MCR_RESERVED_MASK | QSPI_MCR_END_CFD_LE);
|
|
qspi_write32(priv->flags, ®s->rbct, QSPI_RBCT_RXBRD_USEIPS);
|
|
|
|
qspi_write32(priv->flags, ®s->sfar, priv->cur_amba_base);
|
|
|
|
qspi_write32(priv->flags, ®s->ipcr,
|
|
(SEQID_RDID << QSPI_IPCR_SEQID_SHIFT) | 0);
|
|
while (qspi_read32(priv->flags, ®s->sr) & QSPI_SR_BUSY_MASK)
|
|
;
|
|
|
|
i = 0;
|
|
while ((RX_BUFFER_SIZE >= len) && (len > 0)) {
|
|
WATCHDOG_RESET();
|
|
|
|
rbsr_reg = qspi_read32(priv->flags, ®s->rbsr);
|
|
if (rbsr_reg & QSPI_RBSR_RDBFL_MASK) {
|
|
data = qspi_read32(priv->flags, ®s->rbdr[i]);
|
|
data = qspi_endian_xchg(data);
|
|
size = (len < 4) ? len : 4;
|
|
memcpy(rxbuf, &data, size);
|
|
len -= size;
|
|
rxbuf++;
|
|
i++;
|
|
}
|
|
}
|
|
|
|
qspi_write32(priv->flags, ®s->mcr, mcr_reg);
|
|
}
|
|
|
|
/* If not use AHB read, read data from ip interface */
|
|
static void qspi_op_read(struct fsl_qspi_priv *priv, u32 *rxbuf, u32 len)
|
|
{
|
|
struct fsl_qspi_regs *regs = priv->regs;
|
|
u32 mcr_reg, data;
|
|
int i, size;
|
|
u32 to_or_from;
|
|
u32 seqid;
|
|
|
|
if (priv->cur_seqid == QSPI_CMD_RDAR)
|
|
seqid = SEQID_RDAR;
|
|
else
|
|
seqid = SEQID_FAST_READ;
|
|
|
|
mcr_reg = qspi_read32(priv->flags, ®s->mcr);
|
|
qspi_write32(priv->flags, ®s->mcr,
|
|
QSPI_MCR_CLR_RXF_MASK | QSPI_MCR_CLR_TXF_MASK |
|
|
QSPI_MCR_RESERVED_MASK | QSPI_MCR_END_CFD_LE);
|
|
qspi_write32(priv->flags, ®s->rbct, QSPI_RBCT_RXBRD_USEIPS);
|
|
|
|
to_or_from = priv->sf_addr + priv->cur_amba_base;
|
|
|
|
while (len > 0) {
|
|
WATCHDOG_RESET();
|
|
|
|
qspi_write32(priv->flags, ®s->sfar, to_or_from);
|
|
|
|
size = (len > RX_BUFFER_SIZE) ?
|
|
RX_BUFFER_SIZE : len;
|
|
|
|
qspi_write32(priv->flags, ®s->ipcr,
|
|
(seqid << QSPI_IPCR_SEQID_SHIFT) |
|
|
size);
|
|
while (qspi_read32(priv->flags, ®s->sr) & QSPI_SR_BUSY_MASK)
|
|
;
|
|
|
|
to_or_from += size;
|
|
len -= size;
|
|
|
|
i = 0;
|
|
while ((RX_BUFFER_SIZE >= size) && (size > 0)) {
|
|
data = qspi_read32(priv->flags, ®s->rbdr[i]);
|
|
data = qspi_endian_xchg(data);
|
|
if (size < 4)
|
|
memcpy(rxbuf, &data, size);
|
|
else
|
|
memcpy(rxbuf, &data, 4);
|
|
rxbuf++;
|
|
size -= 4;
|
|
i++;
|
|
}
|
|
qspi_write32(priv->flags, ®s->mcr,
|
|
qspi_read32(priv->flags, ®s->mcr) |
|
|
QSPI_MCR_CLR_RXF_MASK);
|
|
}
|
|
|
|
qspi_write32(priv->flags, ®s->mcr, mcr_reg);
|
|
}
|
|
|
|
static void qspi_op_write(struct fsl_qspi_priv *priv, u8 *txbuf, u32 len)
|
|
{
|
|
struct fsl_qspi_regs *regs = priv->regs;
|
|
u32 mcr_reg, data, reg, status_reg, seqid;
|
|
int i, size, tx_size;
|
|
u32 to_or_from = 0;
|
|
|
|
mcr_reg = qspi_read32(priv->flags, ®s->mcr);
|
|
qspi_write32(priv->flags, ®s->mcr,
|
|
QSPI_MCR_CLR_RXF_MASK | QSPI_MCR_CLR_TXF_MASK |
|
|
QSPI_MCR_RESERVED_MASK | QSPI_MCR_END_CFD_LE);
|
|
qspi_write32(priv->flags, ®s->rbct, QSPI_RBCT_RXBRD_USEIPS);
|
|
|
|
status_reg = 0;
|
|
while ((status_reg & FLASH_STATUS_WEL) != FLASH_STATUS_WEL) {
|
|
WATCHDOG_RESET();
|
|
|
|
qspi_write32(priv->flags, ®s->ipcr,
|
|
(SEQID_WREN << QSPI_IPCR_SEQID_SHIFT) | 0);
|
|
while (qspi_read32(priv->flags, ®s->sr) & QSPI_SR_BUSY_MASK)
|
|
;
|
|
|
|
qspi_write32(priv->flags, ®s->ipcr,
|
|
(SEQID_RDSR << QSPI_IPCR_SEQID_SHIFT) | 1);
|
|
while (qspi_read32(priv->flags, ®s->sr) & QSPI_SR_BUSY_MASK)
|
|
;
|
|
|
|
reg = qspi_read32(priv->flags, ®s->rbsr);
|
|
if (reg & QSPI_RBSR_RDBFL_MASK) {
|
|
status_reg = qspi_read32(priv->flags, ®s->rbdr[0]);
|
|
status_reg = qspi_endian_xchg(status_reg);
|
|
}
|
|
qspi_write32(priv->flags, ®s->mcr,
|
|
qspi_read32(priv->flags, ®s->mcr) |
|
|
QSPI_MCR_CLR_RXF_MASK);
|
|
}
|
|
|
|
/* Default is page programming */
|
|
seqid = SEQID_PP;
|
|
if (priv->cur_seqid == QSPI_CMD_WRAR)
|
|
seqid = SEQID_WRAR;
|
|
#ifdef CONFIG_SPI_FLASH_BAR
|
|
if (priv->cur_seqid == QSPI_CMD_BRWR)
|
|
seqid = SEQID_BRWR;
|
|
else if (priv->cur_seqid == QSPI_CMD_WREAR)
|
|
seqid = SEQID_WREAR;
|
|
#endif
|
|
|
|
to_or_from = priv->sf_addr + priv->cur_amba_base;
|
|
|
|
qspi_write32(priv->flags, ®s->sfar, to_or_from);
|
|
|
|
tx_size = (len > TX_BUFFER_SIZE) ?
|
|
TX_BUFFER_SIZE : len;
|
|
|
|
size = tx_size / 16;
|
|
/*
|
|
* There must be atleast 128bit data
|
|
* available in TX FIFO for any pop operation
|
|
*/
|
|
if (tx_size % 16)
|
|
size++;
|
|
for (i = 0; i < size * 4; i++) {
|
|
memcpy(&data, txbuf, 4);
|
|
data = qspi_endian_xchg(data);
|
|
qspi_write32(priv->flags, ®s->tbdr, data);
|
|
txbuf += 4;
|
|
}
|
|
|
|
qspi_write32(priv->flags, ®s->ipcr,
|
|
(seqid << QSPI_IPCR_SEQID_SHIFT) | tx_size);
|
|
while (qspi_read32(priv->flags, ®s->sr) & QSPI_SR_BUSY_MASK)
|
|
;
|
|
|
|
qspi_write32(priv->flags, ®s->mcr, mcr_reg);
|
|
}
|
|
|
|
static void qspi_op_rdsr(struct fsl_qspi_priv *priv, void *rxbuf, u32 len)
|
|
{
|
|
struct fsl_qspi_regs *regs = priv->regs;
|
|
u32 mcr_reg, reg, data;
|
|
|
|
mcr_reg = qspi_read32(priv->flags, ®s->mcr);
|
|
qspi_write32(priv->flags, ®s->mcr,
|
|
QSPI_MCR_CLR_RXF_MASK | QSPI_MCR_CLR_TXF_MASK |
|
|
QSPI_MCR_RESERVED_MASK | QSPI_MCR_END_CFD_LE);
|
|
qspi_write32(priv->flags, ®s->rbct, QSPI_RBCT_RXBRD_USEIPS);
|
|
|
|
qspi_write32(priv->flags, ®s->sfar, priv->cur_amba_base);
|
|
|
|
qspi_write32(priv->flags, ®s->ipcr,
|
|
(SEQID_RDSR << QSPI_IPCR_SEQID_SHIFT) | 0);
|
|
while (qspi_read32(priv->flags, ®s->sr) & QSPI_SR_BUSY_MASK)
|
|
;
|
|
|
|
while (1) {
|
|
WATCHDOG_RESET();
|
|
|
|
reg = qspi_read32(priv->flags, ®s->rbsr);
|
|
if (reg & QSPI_RBSR_RDBFL_MASK) {
|
|
data = qspi_read32(priv->flags, ®s->rbdr[0]);
|
|
data = qspi_endian_xchg(data);
|
|
memcpy(rxbuf, &data, len);
|
|
qspi_write32(priv->flags, ®s->mcr,
|
|
qspi_read32(priv->flags, ®s->mcr) |
|
|
QSPI_MCR_CLR_RXF_MASK);
|
|
break;
|
|
}
|
|
}
|
|
|
|
qspi_write32(priv->flags, ®s->mcr, mcr_reg);
|
|
}
|
|
|
|
static void qspi_op_erase(struct fsl_qspi_priv *priv)
|
|
{
|
|
struct fsl_qspi_regs *regs = priv->regs;
|
|
u32 mcr_reg;
|
|
u32 to_or_from = 0;
|
|
|
|
mcr_reg = qspi_read32(priv->flags, ®s->mcr);
|
|
qspi_write32(priv->flags, ®s->mcr,
|
|
QSPI_MCR_CLR_RXF_MASK | QSPI_MCR_CLR_TXF_MASK |
|
|
QSPI_MCR_RESERVED_MASK | QSPI_MCR_END_CFD_LE);
|
|
qspi_write32(priv->flags, ®s->rbct, QSPI_RBCT_RXBRD_USEIPS);
|
|
|
|
to_or_from = priv->sf_addr + priv->cur_amba_base;
|
|
qspi_write32(priv->flags, ®s->sfar, to_or_from);
|
|
|
|
qspi_write32(priv->flags, ®s->ipcr,
|
|
(SEQID_WREN << QSPI_IPCR_SEQID_SHIFT) | 0);
|
|
while (qspi_read32(priv->flags, ®s->sr) & QSPI_SR_BUSY_MASK)
|
|
;
|
|
|
|
if (priv->cur_seqid == QSPI_CMD_SE) {
|
|
qspi_write32(priv->flags, ®s->ipcr,
|
|
(SEQID_SE << QSPI_IPCR_SEQID_SHIFT) | 0);
|
|
} else if (priv->cur_seqid == QSPI_CMD_BE_4K) {
|
|
qspi_write32(priv->flags, ®s->ipcr,
|
|
(SEQID_BE_4K << QSPI_IPCR_SEQID_SHIFT) | 0);
|
|
}
|
|
while (qspi_read32(priv->flags, ®s->sr) & QSPI_SR_BUSY_MASK)
|
|
;
|
|
|
|
qspi_write32(priv->flags, ®s->mcr, mcr_reg);
|
|
}
|
|
|
|
int qspi_xfer(struct fsl_qspi_priv *priv, unsigned int bitlen,
|
|
const void *dout, void *din, unsigned long flags)
|
|
{
|
|
u32 bytes = DIV_ROUND_UP(bitlen, 8);
|
|
static u32 wr_sfaddr;
|
|
u32 txbuf;
|
|
|
|
WATCHDOG_RESET();
|
|
|
|
if (dout) {
|
|
if (flags & SPI_XFER_BEGIN) {
|
|
priv->cur_seqid = *(u8 *)dout;
|
|
memcpy(&txbuf, dout, 4);
|
|
}
|
|
|
|
if (flags == SPI_XFER_END) {
|
|
priv->sf_addr = wr_sfaddr;
|
|
qspi_op_write(priv, (u8 *)dout, bytes);
|
|
return 0;
|
|
}
|
|
|
|
if (priv->cur_seqid == QSPI_CMD_FAST_READ ||
|
|
priv->cur_seqid == QSPI_CMD_RDAR) {
|
|
priv->sf_addr = swab32(txbuf) & OFFSET_BITS_MASK;
|
|
} else if ((priv->cur_seqid == QSPI_CMD_SE) ||
|
|
(priv->cur_seqid == QSPI_CMD_BE_4K)) {
|
|
priv->sf_addr = swab32(txbuf) & OFFSET_BITS_MASK;
|
|
qspi_op_erase(priv);
|
|
} else if (priv->cur_seqid == QSPI_CMD_PP ||
|
|
priv->cur_seqid == QSPI_CMD_WRAR) {
|
|
wr_sfaddr = swab32(txbuf) & OFFSET_BITS_MASK;
|
|
} else if ((priv->cur_seqid == QSPI_CMD_BRWR) ||
|
|
(priv->cur_seqid == QSPI_CMD_WREAR)) {
|
|
#ifdef CONFIG_SPI_FLASH_BAR
|
|
wr_sfaddr = 0;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
if (din) {
|
|
if (priv->cur_seqid == QSPI_CMD_FAST_READ) {
|
|
#ifdef CONFIG_SYS_FSL_QSPI_AHB
|
|
qspi_ahb_read(priv, din, bytes);
|
|
#else
|
|
qspi_op_read(priv, din, bytes);
|
|
#endif
|
|
} else if (priv->cur_seqid == QSPI_CMD_RDAR) {
|
|
qspi_op_read(priv, din, bytes);
|
|
} else if (priv->cur_seqid == QSPI_CMD_RDID)
|
|
qspi_op_rdid(priv, din, bytes);
|
|
else if (priv->cur_seqid == QSPI_CMD_RDSR)
|
|
qspi_op_rdsr(priv, din, bytes);
|
|
#ifdef CONFIG_SPI_FLASH_BAR
|
|
else if ((priv->cur_seqid == QSPI_CMD_BRRD) ||
|
|
(priv->cur_seqid == QSPI_CMD_RDEAR)) {
|
|
priv->sf_addr = 0;
|
|
qspi_op_rdbank(priv, din, bytes);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#ifdef CONFIG_SYS_FSL_QSPI_AHB
|
|
if ((priv->cur_seqid == QSPI_CMD_SE) ||
|
|
(priv->cur_seqid == QSPI_CMD_PP) ||
|
|
(priv->cur_seqid == QSPI_CMD_BE_4K) ||
|
|
(priv->cur_seqid == QSPI_CMD_WREAR) ||
|
|
(priv->cur_seqid == QSPI_CMD_BRWR))
|
|
qspi_ahb_invalid(priv);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
void qspi_module_disable(struct fsl_qspi_priv *priv, u8 disable)
|
|
{
|
|
u32 mcr_val;
|
|
|
|
mcr_val = qspi_read32(priv->flags, &priv->regs->mcr);
|
|
if (disable)
|
|
mcr_val |= QSPI_MCR_MDIS_MASK;
|
|
else
|
|
mcr_val &= ~QSPI_MCR_MDIS_MASK;
|
|
qspi_write32(priv->flags, &priv->regs->mcr, mcr_val);
|
|
}
|
|
|
|
void qspi_cfg_smpr(struct fsl_qspi_priv *priv, u32 clear_bits, u32 set_bits)
|
|
{
|
|
u32 smpr_val;
|
|
|
|
smpr_val = qspi_read32(priv->flags, &priv->regs->smpr);
|
|
smpr_val &= ~clear_bits;
|
|
smpr_val |= set_bits;
|
|
qspi_write32(priv->flags, &priv->regs->smpr, smpr_val);
|
|
}
|
|
#ifndef CONFIG_DM_SPI
|
|
static unsigned long spi_bases[] = {
|
|
QSPI0_BASE_ADDR,
|
|
#ifdef CONFIG_MX6SX
|
|
QSPI1_BASE_ADDR,
|
|
#endif
|
|
};
|
|
|
|
static unsigned long amba_bases[] = {
|
|
QSPI0_AMBA_BASE,
|
|
#ifdef CONFIG_MX6SX
|
|
QSPI1_AMBA_BASE,
|
|
#endif
|
|
};
|
|
|
|
static inline struct fsl_qspi *to_qspi_spi(struct spi_slave *slave)
|
|
{
|
|
return container_of(slave, struct fsl_qspi, slave);
|
|
}
|
|
|
|
struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
|
|
unsigned int max_hz, unsigned int mode)
|
|
{
|
|
u32 mcr_val;
|
|
struct fsl_qspi *qspi;
|
|
struct fsl_qspi_regs *regs;
|
|
u32 total_size;
|
|
|
|
if (bus >= ARRAY_SIZE(spi_bases))
|
|
return NULL;
|
|
|
|
if (cs >= FSL_QSPI_FLASH_NUM)
|
|
return NULL;
|
|
|
|
qspi = spi_alloc_slave(struct fsl_qspi, bus, cs);
|
|
if (!qspi)
|
|
return NULL;
|
|
|
|
#ifdef CONFIG_SYS_FSL_QSPI_BE
|
|
qspi->priv.flags |= QSPI_FLAG_REGMAP_ENDIAN_BIG;
|
|
#endif
|
|
|
|
regs = (struct fsl_qspi_regs *)spi_bases[bus];
|
|
qspi->priv.regs = regs;
|
|
/*
|
|
* According cs, use different amba_base to choose the
|
|
* corresponding flash devices.
|
|
*
|
|
* If not, only one flash device is used even if passing
|
|
* different cs using `sf probe`
|
|
*/
|
|
qspi->priv.cur_amba_base = amba_bases[bus] + cs * FSL_QSPI_FLASH_SIZE;
|
|
|
|
qspi->slave.max_write_size = TX_BUFFER_SIZE;
|
|
|
|
mcr_val = qspi_read32(qspi->priv.flags, ®s->mcr);
|
|
qspi_write32(qspi->priv.flags, ®s->mcr,
|
|
QSPI_MCR_RESERVED_MASK | QSPI_MCR_MDIS_MASK |
|
|
(mcr_val & QSPI_MCR_END_CFD_MASK));
|
|
|
|
qspi_cfg_smpr(&qspi->priv,
|
|
~(QSPI_SMPR_FSDLY_MASK | QSPI_SMPR_DDRSMP_MASK |
|
|
QSPI_SMPR_FSPHS_MASK | QSPI_SMPR_HSENA_MASK), 0);
|
|
|
|
total_size = FSL_QSPI_FLASH_SIZE * FSL_QSPI_FLASH_NUM;
|
|
/*
|
|
* Any read access to non-implemented addresses will provide
|
|
* undefined results.
|
|
*
|
|
* In case single die flash devices, TOP_ADDR_MEMA2 and
|
|
* TOP_ADDR_MEMB2 should be initialized/programmed to
|
|
* TOP_ADDR_MEMA1 and TOP_ADDR_MEMB1 respectively - in effect,
|
|
* setting the size of these devices to 0. This would ensure
|
|
* that the complete memory map is assigned to only one flash device.
|
|
*/
|
|
qspi_write32(qspi->priv.flags, ®s->sfa1ad,
|
|
FSL_QSPI_FLASH_SIZE | amba_bases[bus]);
|
|
qspi_write32(qspi->priv.flags, ®s->sfa2ad,
|
|
FSL_QSPI_FLASH_SIZE | amba_bases[bus]);
|
|
qspi_write32(qspi->priv.flags, ®s->sfb1ad,
|
|
total_size | amba_bases[bus]);
|
|
qspi_write32(qspi->priv.flags, ®s->sfb2ad,
|
|
total_size | amba_bases[bus]);
|
|
|
|
qspi_set_lut(&qspi->priv);
|
|
|
|
#ifdef CONFIG_SYS_FSL_QSPI_AHB
|
|
qspi_init_ahb_read(&qspi->priv);
|
|
#endif
|
|
|
|
qspi_module_disable(&qspi->priv, 0);
|
|
|
|
return &qspi->slave;
|
|
}
|
|
|
|
void spi_free_slave(struct spi_slave *slave)
|
|
{
|
|
struct fsl_qspi *qspi = to_qspi_spi(slave);
|
|
|
|
free(qspi);
|
|
}
|
|
|
|
int spi_claim_bus(struct spi_slave *slave)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void spi_release_bus(struct spi_slave *slave)
|
|
{
|
|
/* Nothing to do */
|
|
}
|
|
|
|
int spi_xfer(struct spi_slave *slave, unsigned int bitlen,
|
|
const void *dout, void *din, unsigned long flags)
|
|
{
|
|
struct fsl_qspi *qspi = to_qspi_spi(slave);
|
|
|
|
return qspi_xfer(&qspi->priv, bitlen, dout, din, flags);
|
|
}
|
|
|
|
void spi_init(void)
|
|
{
|
|
/* Nothing to do */
|
|
}
|
|
#else
|
|
static int fsl_qspi_child_pre_probe(struct udevice *dev)
|
|
{
|
|
struct spi_slave *slave = dev_get_parent_priv(dev);
|
|
|
|
slave->max_write_size = TX_BUFFER_SIZE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fsl_qspi_probe(struct udevice *bus)
|
|
{
|
|
u32 mcr_val;
|
|
u32 amba_size_per_chip;
|
|
struct fsl_qspi_platdata *plat = dev_get_platdata(bus);
|
|
struct fsl_qspi_priv *priv = dev_get_priv(bus);
|
|
struct dm_spi_bus *dm_spi_bus;
|
|
int i, ret;
|
|
|
|
dm_spi_bus = bus->uclass_priv;
|
|
|
|
dm_spi_bus->max_hz = plat->speed_hz;
|
|
|
|
priv->regs = (struct fsl_qspi_regs *)(uintptr_t)plat->reg_base;
|
|
priv->flags = plat->flags;
|
|
|
|
priv->speed_hz = plat->speed_hz;
|
|
/*
|
|
* QSPI SFADR width is 32bits, the max dest addr is 4GB-1.
|
|
* AMBA memory zone should be located on the 0~4GB space
|
|
* even on a 64bits cpu.
|
|
*/
|
|
priv->amba_base[0] = (u32)plat->amba_base;
|
|
priv->amba_total_size = (u32)plat->amba_total_size;
|
|
priv->flash_num = plat->flash_num;
|
|
priv->num_chipselect = plat->num_chipselect;
|
|
|
|
/* make sure controller is not busy anywhere */
|
|
ret = wait_for_bit(__func__, &priv->regs->sr,
|
|
QSPI_SR_BUSY_MASK |
|
|
QSPI_SR_AHB_ACC_MASK |
|
|
QSPI_SR_IP_ACC_MASK,
|
|
false, 100, false);
|
|
|
|
if (ret) {
|
|
debug("ERROR : The controller is busy\n");
|
|
return ret;
|
|
}
|
|
|
|
mcr_val = qspi_read32(priv->flags, &priv->regs->mcr);
|
|
qspi_write32(priv->flags, &priv->regs->mcr,
|
|
QSPI_MCR_RESERVED_MASK | QSPI_MCR_MDIS_MASK |
|
|
(mcr_val & QSPI_MCR_END_CFD_MASK));
|
|
|
|
qspi_cfg_smpr(priv, ~(QSPI_SMPR_FSDLY_MASK | QSPI_SMPR_DDRSMP_MASK |
|
|
QSPI_SMPR_FSPHS_MASK | QSPI_SMPR_HSENA_MASK), 0);
|
|
|
|
/*
|
|
* Assign AMBA memory zone for every chipselect
|
|
* QuadSPI has two channels, every channel has two chipselects.
|
|
* If the property 'num-cs' in dts is 2, the AMBA memory will be divided
|
|
* into two parts and assign to every channel. This indicate that every
|
|
* channel only has one valid chipselect.
|
|
* If the property 'num-cs' in dts is 4, the AMBA memory will be divided
|
|
* into four parts and assign to every chipselect.
|
|
* Every channel will has two valid chipselects.
|
|
*/
|
|
amba_size_per_chip = priv->amba_total_size >>
|
|
(priv->num_chipselect >> 1);
|
|
for (i = 1 ; i < priv->num_chipselect ; i++)
|
|
priv->amba_base[i] =
|
|
amba_size_per_chip + priv->amba_base[i - 1];
|
|
|
|
/*
|
|
* Any read access to non-implemented addresses will provide
|
|
* undefined results.
|
|
*
|
|
* In case single die flash devices, TOP_ADDR_MEMA2 and
|
|
* TOP_ADDR_MEMB2 should be initialized/programmed to
|
|
* TOP_ADDR_MEMA1 and TOP_ADDR_MEMB1 respectively - in effect,
|
|
* setting the size of these devices to 0. This would ensure
|
|
* that the complete memory map is assigned to only one flash device.
|
|
*/
|
|
qspi_write32(priv->flags, &priv->regs->sfa1ad,
|
|
priv->amba_base[0] + amba_size_per_chip);
|
|
switch (priv->num_chipselect) {
|
|
case 1:
|
|
break;
|
|
case 2:
|
|
qspi_write32(priv->flags, &priv->regs->sfa2ad,
|
|
priv->amba_base[1]);
|
|
qspi_write32(priv->flags, &priv->regs->sfb1ad,
|
|
priv->amba_base[1] + amba_size_per_chip);
|
|
qspi_write32(priv->flags, &priv->regs->sfb2ad,
|
|
priv->amba_base[1] + amba_size_per_chip);
|
|
break;
|
|
case 4:
|
|
qspi_write32(priv->flags, &priv->regs->sfa2ad,
|
|
priv->amba_base[2]);
|
|
qspi_write32(priv->flags, &priv->regs->sfb1ad,
|
|
priv->amba_base[3]);
|
|
qspi_write32(priv->flags, &priv->regs->sfb2ad,
|
|
priv->amba_base[3] + amba_size_per_chip);
|
|
break;
|
|
default:
|
|
debug("Error: Unsupported chipselect number %u!\n",
|
|
priv->num_chipselect);
|
|
qspi_module_disable(priv, 1);
|
|
return -EINVAL;
|
|
}
|
|
|
|
qspi_set_lut(priv);
|
|
|
|
#ifdef CONFIG_SYS_FSL_QSPI_AHB
|
|
qspi_init_ahb_read(priv);
|
|
#endif
|
|
|
|
qspi_module_disable(priv, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fsl_qspi_ofdata_to_platdata(struct udevice *bus)
|
|
{
|
|
struct fdt_resource res_regs, res_mem;
|
|
struct fsl_qspi_platdata *plat = bus->platdata;
|
|
const void *blob = gd->fdt_blob;
|
|
int node = dev_of_offset(bus);
|
|
int ret, flash_num = 0, subnode;
|
|
|
|
if (fdtdec_get_bool(blob, node, "big-endian"))
|
|
plat->flags |= QSPI_FLAG_REGMAP_ENDIAN_BIG;
|
|
|
|
ret = fdt_get_named_resource(blob, node, "reg", "reg-names",
|
|
"QuadSPI", &res_regs);
|
|
if (ret) {
|
|
debug("Error: can't get regs base addresses(ret = %d)!\n", ret);
|
|
return -ENOMEM;
|
|
}
|
|
ret = fdt_get_named_resource(blob, node, "reg", "reg-names",
|
|
"QuadSPI-memory", &res_mem);
|
|
if (ret) {
|
|
debug("Error: can't get AMBA base addresses(ret = %d)!\n", ret);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Count flash numbers */
|
|
fdt_for_each_subnode(subnode, blob, node)
|
|
++flash_num;
|
|
|
|
if (flash_num == 0) {
|
|
debug("Error: Missing flashes!\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
plat->speed_hz = fdtdec_get_int(blob, node, "spi-max-frequency",
|
|
FSL_QSPI_DEFAULT_SCK_FREQ);
|
|
plat->num_chipselect = fdtdec_get_int(blob, node, "num-cs",
|
|
FSL_QSPI_MAX_CHIPSELECT_NUM);
|
|
|
|
plat->reg_base = res_regs.start;
|
|
plat->amba_base = res_mem.start;
|
|
plat->amba_total_size = res_mem.end - res_mem.start + 1;
|
|
plat->flash_num = flash_num;
|
|
|
|
debug("%s: regs=<0x%llx> <0x%llx, 0x%llx>, max-frequency=%d, endianess=%s\n",
|
|
__func__,
|
|
(u64)plat->reg_base,
|
|
(u64)plat->amba_base,
|
|
(u64)plat->amba_total_size,
|
|
plat->speed_hz,
|
|
plat->flags & QSPI_FLAG_REGMAP_ENDIAN_BIG ? "be" : "le"
|
|
);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fsl_qspi_xfer(struct udevice *dev, unsigned int bitlen,
|
|
const void *dout, void *din, unsigned long flags)
|
|
{
|
|
struct fsl_qspi_priv *priv;
|
|
struct udevice *bus;
|
|
|
|
bus = dev->parent;
|
|
priv = dev_get_priv(bus);
|
|
|
|
return qspi_xfer(priv, bitlen, dout, din, flags);
|
|
}
|
|
|
|
static int fsl_qspi_claim_bus(struct udevice *dev)
|
|
{
|
|
struct fsl_qspi_priv *priv;
|
|
struct udevice *bus;
|
|
struct dm_spi_slave_platdata *slave_plat = dev_get_parent_platdata(dev);
|
|
int ret;
|
|
|
|
bus = dev->parent;
|
|
priv = dev_get_priv(bus);
|
|
|
|
/* make sure controller is not busy anywhere */
|
|
ret = wait_for_bit(__func__, &priv->regs->sr,
|
|
QSPI_SR_BUSY_MASK |
|
|
QSPI_SR_AHB_ACC_MASK |
|
|
QSPI_SR_IP_ACC_MASK,
|
|
false, 100, false);
|
|
|
|
if (ret) {
|
|
debug("ERROR : The controller is busy\n");
|
|
return ret;
|
|
}
|
|
|
|
priv->cur_amba_base = priv->amba_base[slave_plat->cs];
|
|
|
|
qspi_module_disable(priv, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fsl_qspi_release_bus(struct udevice *dev)
|
|
{
|
|
struct fsl_qspi_priv *priv;
|
|
struct udevice *bus;
|
|
|
|
bus = dev->parent;
|
|
priv = dev_get_priv(bus);
|
|
|
|
qspi_module_disable(priv, 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fsl_qspi_set_speed(struct udevice *bus, uint speed)
|
|
{
|
|
/* Nothing to do */
|
|
return 0;
|
|
}
|
|
|
|
static int fsl_qspi_set_mode(struct udevice *bus, uint mode)
|
|
{
|
|
/* Nothing to do */
|
|
return 0;
|
|
}
|
|
|
|
static const struct dm_spi_ops fsl_qspi_ops = {
|
|
.claim_bus = fsl_qspi_claim_bus,
|
|
.release_bus = fsl_qspi_release_bus,
|
|
.xfer = fsl_qspi_xfer,
|
|
.set_speed = fsl_qspi_set_speed,
|
|
.set_mode = fsl_qspi_set_mode,
|
|
};
|
|
|
|
static const struct udevice_id fsl_qspi_ids[] = {
|
|
{ .compatible = "fsl,vf610-qspi" },
|
|
{ .compatible = "fsl,imx6sx-qspi" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(fsl_qspi) = {
|
|
.name = "fsl_qspi",
|
|
.id = UCLASS_SPI,
|
|
.of_match = fsl_qspi_ids,
|
|
.ops = &fsl_qspi_ops,
|
|
.ofdata_to_platdata = fsl_qspi_ofdata_to_platdata,
|
|
.platdata_auto_alloc_size = sizeof(struct fsl_qspi_platdata),
|
|
.priv_auto_alloc_size = sizeof(struct fsl_qspi_priv),
|
|
.probe = fsl_qspi_probe,
|
|
.child_pre_probe = fsl_qspi_child_pre_probe,
|
|
};
|
|
#endif
|
|
|