Refactor FPGA bitstream upload code.

Move the N25Q128 code to it's own file in order to be able to reuse it
for the keystore memory code.

1 files changed, 75 insertions, 0 deletions

diff --git a/spiflash_n25q128.h b/spiflash_n25q128.h
new file mode 100644
index 0000000..6802e22
--- /dev/null
+++ b/spiflash_n25q128.h
@@ -0,0 +1,75 @@
+/*
+ * spiflash_n25q128.h
+ * ------------------
+ * Functions and defines for accessing SPI flash with part number n25q128.
+ *
+ * The Alpha board has two of these SPI flash memorys, the FPGA config memory
+ * and the keystore memory.
+ *
+ * Copyright (c) 2016, NORDUnet A/S All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * - Redistributions of source code must retain the above copyright notice,
+ *   this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of the NORDUnet nor the names of its contributors may
+ *   be used to endorse or promote products derived from this software
+ *   without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __STM32_SPIFLASH_N25Q128_H
+#define __STM32_SPIFLASH_N25Q128_H
+
+#include "stm32f4xx_hal.h"
+
+#define N25Q128_COMMAND_READ_ID		0x9E
+#define N25Q128_COMMAND_READ_PAGE	0x03
+#define N25Q128_COMMAND_READ_STATUS	0x05
+#define N25Q128_COMMAND_WRITE_ENABLE	0x06
+#define N25Q128_COMMAND_ERASE_SECTOR	0xD8
+#define N25Q128_COMMAND_PAGE_PROGRAM	0x02
+
+#define N25Q128_PAGE_SIZE		0x100		// 256
+#define N25Q128_NUM_PAGES		0x10000		// 65536
+
+#define N25Q128_SECTOR_SIZE		0x10000		// 65536
+#define N25Q128_NUM_SECTORS		0x100		// 256
+
+#define N25Q128_SPI_TIMEOUT		1000
+
+#define N25Q128_ID_MANUFACTURER		0x20
+#define N25Q128_ID_DEVICE_TYPE		0xBA
+#define N25Q128_ID_DEVICE_CAPACITY	0x18
+
+struct spiflash_ctx {
+    SPI_HandleTypeDef *hspi;
+    GPIO_TypeDef *cs_n_port;
+    uint16_t cs_n_pin;
+};
+
+extern int n25q128_check_id(struct spiflash_ctx *ctx);
+extern int n25q128_get_wip_flag(struct spiflash_ctx *ctx);
+extern int n25q128_read_page(struct spiflash_ctx *ctx, uint32_t page_offset, uint8_t *page_buffer);
+extern int n25q128_write_page(struct spiflash_ctx *ctx, uint32_t page_offset, const uint8_t *page_buffer);
+extern int n25q128_erase_sector(struct spiflash_ctx *ctx, uint32_t sector_offset);
+
+extern int n25q128_write_data(struct spiflash_ctx *ctx, uint32_t offset, const uint8_t *buf, const uint32_t len);
+#endif /* __STM32_SPIFLASH_N25Q128_H */