Add raw NAND framework
The raw NAND framework supports SLC NAND devices.
It introduces a new high level interface (io_mtd) that
defines operations a driver can register to the NAND framework.
This interface will fill in the io_mtd device specification:
- device_size
- erase_size
that could be used by the io_storage interface.
NAND core source file integrates the standard read loop that
performs NAND device read operations using a skip bad block strategy.
A platform buffer must be defined in case of unaligned
data. This buffer must fit to the maximum device page size
defined by PLATFORM_MTD_MAX_PAGE_SIZE.
The raw_nand.c source file embeds the specific NAND operations
to read data.
The read command is a raw page read without any ECC correction.
This can be overridden by a low level driver.
No generic support for write or erase command or software
ECC correction.
NAND ONFI detection is available and can be enabled using
NAND_ONFI_DETECT=1.
For non-ONFI NAND management, platform can define required
information.
Change-Id: Id80e9864456cf47f02b74938cf25d99261da8e82
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
diff --git a/include/drivers/raw_nand.h b/include/drivers/raw_nand.h
new file mode 100644
index 0000000..18e4b73
--- /dev/null
+++ b/include/drivers/raw_nand.h
@@ -0,0 +1,187 @@
+/*
+ * Copyright (c) 2019, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef DRIVERS_RAW_NAND_H
+#define DRIVERS_RAW_NAND_H
+
+#include <stdint.h>
+
+#include <drivers/nand.h>
+
+/* NAND ONFI default value mode 0 in picosecond */
+#define NAND_TADL_MIN 400000UL
+#define NAND_TALH_MIN 20000UL
+#define NAND_TALS_MIN 50000UL
+#define NAND_TAR_MIN 25000UL
+#define NAND_TCCS_MIN 500000UL
+#define NAND_TCEA_MIN 100000UL
+#define NAND_TCEH_MIN 20000UL
+#define NAND_TCH_MIN 20000UL
+#define NAND_TCHZ_MAX 100000UL
+#define NAND_TCLH_MIN 20000UL
+#define NAND_TCLR_MIN 20000UL
+#define NAND_TCLS_MIN 50000UL
+#define NAND_TCOH_MIN 0UL
+#define NAND_TCS_MIN 70000UL
+#define NAND_TDH_MIN 20000UL
+#define NAND_TDS_MIN 40000UL
+#define NAND_TFEAT_MAX 1000000UL
+#define NAND_TIR_MIN 10000UL
+#define NAND_TITC_MIN 1000000UL
+#define NAND_TR_MAX 200000000UL
+#define NAND_TRC_MIN 100000UL
+#define NAND_TREA_MAX 40000UL
+#define NAND_TREH_MIN 30000UL
+#define NAND_TRHOH_MIN 0UL
+#define NAND_TRHW_MIN 200000UL
+#define NAND_TRHZ_MAX 200000UL
+#define NAND_TRLOH_MIN 0UL
+#define NAND_TRP_MIN 50000UL
+#define NAND_TRR_MIN 40000UL
+#define NAND_TRST_MAX 250000000000ULL
+#define NAND_TWB_MAX 200000UL
+#define NAND_TWC_MIN 100000UL
+#define NAND_TWH_MIN 30000UL
+#define NAND_TWHR_MIN 120000UL
+#define NAND_TWP_MIN 50000UL
+#define NAND_TWW_MIN 100000UL
+
+/* NAND request types */
+#define NAND_REQ_CMD 0x0000U
+#define NAND_REQ_ADDR 0x1000U
+#define NAND_REQ_DATAIN 0x2000U
+#define NAND_REQ_DATAOUT 0x3000U
+#define NAND_REQ_WAIT 0x4000U
+#define NAND_REQ_MASK GENMASK(14, 12)
+#define NAND_REQ_BUS_WIDTH_8 BIT(15)
+
+#define PARAM_PAGE_SIZE 256
+
+/* NAND ONFI commands */
+#define NAND_CMD_READ_1ST 0x00U
+#define NAND_CMD_CHANGE_1ST 0x05U
+#define NAND_CMD_READID_SIG_ADDR 0x20U
+#define NAND_CMD_READ_2ND 0x30U
+#define NAND_CMD_STATUS 0x70U
+#define NAND_CMD_READID 0x90U
+#define NAND_CMD_CHANGE_2ND 0xE0U
+#define NAND_CMD_READ_PARAM_PAGE 0xECU
+#define NAND_CMD_RESET 0xFFU
+
+#define ONFI_REV_21 BIT(3)
+#define ONFI_FEAT_BUS_WIDTH_16 BIT(0)
+#define ONFI_FEAT_EXTENDED_PARAM BIT(7)
+
+/* NAND ECC type */
+#define NAND_ECC_NONE U(0)
+#define NAND_ECC_HW U(1)
+#define NAND_ECC_ONDIE U(2)
+
+/* NAND bus width */
+#define NAND_BUS_WIDTH_8 U(0)
+#define NAND_BUS_WIDTH_16 U(1)
+
+struct nand_req {
+ struct nand_device *nand;
+ uint16_t type;
+ uint8_t *addr;
+ unsigned int length;
+ unsigned int delay_ms;
+ unsigned int inst_delay;
+};
+
+struct nand_param_page {
+ /* Rev information and feature block */
+ uint32_t page_sig;
+ uint16_t rev;
+ uint16_t features;
+ uint16_t opt_cmd;
+ uint8_t jtg;
+ uint8_t train_cmd;
+ uint16_t ext_param_length;
+ uint8_t nb_param_pages;
+ uint8_t reserved1[17];
+ /* Manufacturer information */
+ uint8_t manufacturer[12];
+ uint8_t model[20];
+ uint8_t manufacturer_id;
+ uint16_t data_code;
+ uint8_t reserved2[13];
+ /* Memory organization */
+ uint32_t bytes_per_page;
+ uint16_t spare_per_page;
+ uint32_t bytes_per_partial;
+ uint16_t spare_per_partial;
+ uint32_t num_pages_per_blk;
+ uint32_t num_blk_in_lun;
+ uint8_t num_lun;
+ uint8_t num_addr_cycles;
+ uint8_t bit_per_cell;
+ uint16_t max_bb_per_lun;
+ uint16_t blk_endur;
+ uint8_t valid_blk_begin;
+ uint16_t blk_enbur_valid;
+ uint8_t nb_prog_page;
+ uint8_t partial_prog_attr;
+ uint8_t nb_ecc_bits;
+ uint8_t plane_addr;
+ uint8_t mplanes_ops;
+ uint8_t ez_nand;
+ uint8_t reserved3[12];
+ /* Electrical parameters */
+ uint8_t io_pin_cap_max;
+ uint16_t sdr_timing_mode;
+ uint16_t sdr_prog_cache_timing;
+ uint16_t tprog;
+ uint16_t tbers;
+ uint16_t tr;
+ uint16_t tccs;
+ uint8_t nvddr_timing_mode;
+ uint8_t nvddr2_timing_mode;
+ uint8_t nvddr_features;
+ uint16_t clk_input_cap_typ;
+ uint16_t io_pin_cap_typ;
+ uint16_t input_pin_cap_typ;
+ uint8_t input_pin_cap_max;
+ uint8_t drv_strength_support;
+ uint16_t tr_max;
+ uint16_t tadl;
+ uint16_t tr_typ;
+ uint8_t reserved4[6];
+ /* Vendor block */
+ uint16_t vendor_revision;
+ uint8_t vendor[88];
+ uint16_t crc16;
+} __packed;
+
+struct nand_ctrl_ops {
+ int (*exec)(struct nand_req *req);
+ void (*setup)(struct nand_device *nand);
+};
+
+struct rawnand_device {
+ struct nand_device *nand_dev;
+ const struct nand_ctrl_ops *ops;
+};
+
+int nand_raw_init(unsigned long long *size, unsigned int *erase_size);
+int nand_wait_ready(unsigned long delay);
+int nand_read_page_cmd(unsigned int page, unsigned int offset,
+ uintptr_t buffer, unsigned int len);
+int nand_change_read_column_cmd(unsigned int offset, uintptr_t buffer,
+ unsigned int len);
+void nand_raw_ctrl_init(const struct nand_ctrl_ops *ops);
+
+/*
+ * Platform can implement this to override default raw NAND instance
+ * configuration.
+ *
+ * @device: target raw NAND instance.
+ * Return 0 on success, negative value otherwise.
+ */
+int plat_get_raw_nand_data(struct rawnand_device *device);
+
+#endif /* DRIVERS_RAW_NAND_H */