1 files changed, 58 insertions, 0 deletions
diff --git a/include/drivers/spi_nor.h b/include/drivers/spi_nor.h
new file mode 100644
index 0000000..72cfe5b
--- /dev/null
+++ b/include/drivers/spi_nor.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2019, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef DRIVERS_SPI_NOR_H
+#define DRIVERS_SPI_NOR_H
+
+#include <drivers/spi_mem.h>
+
+/* OPCODE */
+#define SPI_NOR_OP_WREN		0x06U	/* Write enable */
+#define SPI_NOR_OP_WRSR		0x01U	/* Write status register 1 byte */
+#define SPI_NOR_OP_READ_ID	0x9FU	/* Read JEDEC ID */
+#define SPI_NOR_OP_READ_CR	0x35U	/* Read configuration register */
+#define SPI_NOR_OP_READ_SR	0x05U	/* Read status register */
+#define SPI_NOR_OP_READ_FSR	0x70U	/* Read flag status register */
+#define SPINOR_OP_RDEAR		0xC8U	/* Read Extended Address Register */
+#define SPINOR_OP_WREAR		0xC5U	/* Write Extended Address Register */
+
+/* Used for Spansion flashes only. */
+#define SPINOR_OP_BRWR		0x17U	/* Bank register write */
+#define SPINOR_OP_BRRD		0x16U	/* Bank register read */
+
+#define SPI_NOR_OP_READ		0x03U	/* Read data bytes (low frequency) */
+#define SPI_NOR_OP_READ_FAST	0x0BU	/* Read data bytes (high frequency) */
+#define SPI_NOR_OP_READ_1_1_2	0x3BU	/* Read data bytes (Dual Output SPI) */
+#define SPI_NOR_OP_READ_1_2_2	0xBBU	/* Read data bytes (Dual I/O SPI) */
+#define SPI_NOR_OP_READ_1_1_4	0x6BU	/* Read data bytes (Quad Output SPI) */
+#define SPI_NOR_OP_READ_1_4_4	0xEBU	/* Read data bytes (Quad I/O SPI) */
+
+/* Flags for NOR specific configuration */
+#define SPI_NOR_USE_FSR		BIT(0)
+#define SPI_NOR_USE_BANK	BIT(1)
+
+struct nor_device {
+	struct spi_mem_op read_op;
+	uint32_t size;
+	uint32_t flags;
+	uint8_t selected_bank;
+	uint8_t bank_write_cmd;
+	uint8_t bank_read_cmd;
+};
+
+int spi_nor_read(unsigned int offset, uintptr_t buffer, size_t length,
+		 size_t *length_read);
+int spi_nor_init(unsigned long long *device_size, unsigned int *erase_size);
+
+/*
+ * Platform can implement this to override default NOR instance configuration.
+ *
+ * @device: target NOR instance.
+ * Return 0 on success, negative value otherwise.
+ */
+int plat_get_nor_data(struct nor_device *device);
+
+#endif /* DRIVERS_SPI_NOR_H */