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authorSheetal Tigadoli <sheetal.tigadoli@broadcom.com>2020-01-06 00:08:24 +0530
committerSheetal Tigadoli <sheetal.tigadoli@broadcom.com>2020-04-03 17:12:42 +0530
commit49dec7f7f2ce911dfa3c57a54d5b21bd061d67ee (patch)
treee463e6b921984e92ab56e11d3d92374245b60870 /include/drivers
parente3ee7b7dc85fdfd5fd445353ad65cd39302e94f6 (diff)
downloadtrusted-firmware-a-49dec7f7f2ce911dfa3c57a54d5b21bd061d67ee.tar.gz
drivers: Add SPI Nor flash support
Add SPI Nor flash support Change-Id: I0cde3fdb4dcad5bcaf445b3bb48e279332bd28af Signed-off-by: Sheetal Tigadoli <sheetal.tigadoli@broadcom.com>
Diffstat (limited to 'include/drivers')
-rw-r--r--include/drivers/brcm/sf.h90
-rw-r--r--include/drivers/brcm/spi_flash.h18
2 files changed, 108 insertions, 0 deletions
diff --git a/include/drivers/brcm/sf.h b/include/drivers/brcm/sf.h
new file mode 100644
index 0000000000..c32cbebf94
--- /dev/null
+++ b/include/drivers/brcm/sf.h
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2019-2020, Broadcom
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef SF_H
+#define SF_H
+
+#include <stdint.h>
+#include <stddef.h>
+
+#ifdef SPI_DEBUG
+#define SPI_DEBUG(fmt, ...) INFO(fmt, ##__VA_ARGS__)
+#else
+#define SPI_DEBUG(fmt, ...)
+#endif
+
+#define SPI_FLASH_MAX_ID_LEN 6
+
+#define CMD_WRSR 0x01 /* Write status register */
+#define CMD_PAGE_PROGRAM 0x02
+#define CMD_READ_NORMAL 0x03
+#define CMD_RDSR 0x05
+#define CMD_WRITE_ENABLE 0x06
+#define CMD_RDFSR 0x70
+#define CMD_READ_ID 0x9f
+#define CMD_ERASE_4K 0x20
+#define CMD_ERASE_64K 0xd8
+#define ERASE_SIZE_64K (64 * 1024)
+
+/* Common status */
+#define STATUS_WIP BIT(0)
+
+struct spi_flash {
+ struct spi_slave *spi;
+ uint32_t size;
+ uint32_t page_size;
+ uint32_t sector_size;
+ uint32_t erase_size;
+ uint8_t erase_cmd;
+ uint8_t read_cmd;
+ uint8_t write_cmd;
+ uint8_t flags;
+};
+
+struct spi_flash_info {
+ const char *name;
+
+ /*
+ * This array stores the ID bytes.
+ * The first three bytes are the JEDIC ID.
+ * JEDEC ID zero means "no ID" (mostly older chips).
+ */
+ uint8_t id[SPI_FLASH_MAX_ID_LEN];
+ uint8_t id_len;
+
+ uint32_t sector_size;
+ uint32_t n_sectors;
+ uint16_t page_size;
+
+ uint8_t flags;
+};
+
+/* Enum list - Full read commands */
+enum spi_read_cmds {
+ ARRAY_SLOW = BIT(0),
+ ARRAY_FAST = BIT(1),
+ DUAL_OUTPUT_FAST = BIT(2),
+ DUAL_IO_FAST = BIT(3),
+ QUAD_OUTPUT_FAST = BIT(4),
+ QUAD_IO_FAST = BIT(5),
+};
+
+/* sf param flags */
+enum spi_param_flag {
+ SECT_4K = BIT(0),
+ SECT_32K = BIT(1),
+ E_FSR = BIT(2),
+ SST_BP = BIT(3),
+ SST_WP = BIT(4),
+ WR_QPP = BIT(5),
+};
+
+int spi_flash_cmd_read(const uint8_t *cmd, size_t cmd_len,
+ void *data, size_t data_len);
+int spi_flash_cmd(uint8_t cmd, void *response, size_t len);
+int spi_flash_cmd_write(const uint8_t *cmd, size_t cmd_len,
+ const void *data, size_t data_len);
+#endif
diff --git a/include/drivers/brcm/spi_flash.h b/include/drivers/brcm/spi_flash.h
new file mode 100644
index 0000000000..bbaaa5088d
--- /dev/null
+++ b/include/drivers/brcm/spi_flash.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2019-2020, Broadcom
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef SPI_FLASH_H
+#define SPI_FLASH_H
+
+#include <sf.h>
+
+int spi_flash_probe(struct spi_flash *flash);
+int spi_flash_erase(struct spi_flash *flash, uint32_t offset, uint32_t len);
+int spi_flash_write(struct spi_flash *flash, uint32_t offset,
+ uint32_t len, void *buf);
+int spi_flash_read(struct spi_flash *flash, uint32_t offset,
+ uint32_t len, void *data);
+#endif /* _SPI_FLASH_H_ */