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@@ -1,996 +0,0 @@
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-/*
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- * SPI flash driver
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- *
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- * Enter bugs at http://blackfin.uclinux.org/
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- *
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- * Copyright (c) 2005-2008 Analog Devices Inc.
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- *
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- * Licensed under the GPL-2 or later.
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- */
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-
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-/* Configuration options:
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- * CONFIG_SPI_BAUD - value to load into SPI_BAUD (divisor of SCLK to get SPI CLK)
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- * CONFIG_SPI_FLASH_SLOW_READ - force usage of the slower read
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- * WARNING: make sure your SCLK + SPI_BAUD is slow enough
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- */
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-
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-#include <common.h>
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-#include <malloc.h>
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-#include <asm/io.h>
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-#include <asm/mach-common/bits/spi.h>
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-#include <asm/mach-common/bits/dma.h>
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-
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-/* Forcibly phase out these */
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-#ifdef CONFIG_SPI_FLASH_NUM_SECTORS
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-# error do not set CONFIG_SPI_FLASH_NUM_SECTORS
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-#endif
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-#ifdef CONFIG_SPI_FLASH_SECTOR_SIZE
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-# error do not set CONFIG_SPI_FLASH_SECTOR_SIZE
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-#endif
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-
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-#if defined(CONFIG_SPI)
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-
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-struct flash_info {
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- char *name;
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- uint16_t id;
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- uint16_t ext_id;
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- unsigned sector_size;
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- unsigned num_sectors;
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-};
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-
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-/* SPI Speeds: 50 MHz / 33 MHz */
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-static struct flash_info flash_spansion_serial_flash[] = {
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- { "S25FL016", 0x0215, 0, 64 * 1024, 32 },
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- { "S25FL032", 0x0216, 0, 64 * 1024, 64 },
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- { "S25FL064", 0x0217, 0, 64 * 1024, 128 },
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- { "S25FL128-00", 0x2018, 0x0301, 64 * 1024, 256 }, /* Package marking FL128PIF */
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- { "S25FL128-01", 0x2018, 0x0300, 128 * 1024, 64 }, /* Package marking FL128PIFL */
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- { NULL, 0, 0, 0, 0 }
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-};
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-
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-/* SPI Speeds: 50 MHz / 20 MHz */
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-static struct flash_info flash_st_serial_flash[] = {
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- { "m25p05", 0x2010, 0, 32 * 1024, 2 },
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- { "m25p10", 0x2011, 0, 32 * 1024, 4 },
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- { "m25p20", 0x2012, 0, 64 * 1024, 4 },
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- { "m25p40", 0x2013, 0, 64 * 1024, 8 },
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- { "m25p80", 0x20FF, 0, 64 * 1024, 16 },
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- { "m25p16", 0x2015, 0, 64 * 1024, 32 },
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- { "m25p32", 0x2016, 0, 64 * 1024, 64 },
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- { "m25p64", 0x2017, 0, 64 * 1024, 128 },
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- { "m25p128", 0x2018, 0, 256 * 1024, 64 },
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- { NULL, 0, 0, 0, 0 }
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-};
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-
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-/* SPI Speeds: 20 MHz / 40 MHz */
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-static struct flash_info flash_sst_serial_flash[] = {
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- { "SST25WF512", 0x2501, 0, 4 * 1024, 128 },
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- { "SST25WF010", 0x2502, 0, 4 * 1024, 256 },
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- { "SST25WF020", 0x2503, 0, 4 * 1024, 512 },
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- { "SST25WF040", 0x2504, 0, 4 * 1024, 1024 },
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- { NULL, 0, 0, 0, 0 }
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-};
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-
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-/* SPI Speeds: 66 MHz / 33 MHz */
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-static struct flash_info flash_atmel_dataflash[] = {
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- { "AT45DB011x", 0x0c, 0, 264, 512 },
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- { "AT45DB021x", 0x14, 0, 264, 1025 },
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- { "AT45DB041x", 0x1c, 0, 264, 2048 },
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- { "AT45DB081x", 0x24, 0, 264, 4096 },
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- { "AT45DB161x", 0x2c, 0, 528, 4096 },
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- { "AT45DB321x", 0x34, 0, 528, 8192 },
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- { "AT45DB642x", 0x3c, 0, 1056, 8192 },
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- { NULL, 0, 0, 0, 0 }
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-};
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-
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-/* SPI Speed: 50 MHz / 25 MHz or 40 MHz / 20 MHz */
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-static struct flash_info flash_winbond_serial_flash[] = {
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- { "W25X10", 0x3011, 0, 16 * 256, 32 },
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- { "W25X20", 0x3012, 0, 16 * 256, 64 },
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- { "W25X40", 0x3013, 0, 16 * 256, 128 },
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- { "W25X80", 0x3014, 0, 16 * 256, 256 },
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- { "W25P80", 0x2014, 0, 256 * 256, 16 },
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- { "W25P16", 0x2015, 0, 256 * 256, 32 },
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- { NULL, 0, 0, 0, 0 }
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-};
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-
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-struct flash_ops {
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- uint8_t read, write, erase, status;
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-};
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-
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-#ifdef CONFIG_SPI_FLASH_SLOW_READ
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-# define OP_READ 0x03
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-#else
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-# define OP_READ 0x0B
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-#endif
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-static struct flash_ops flash_st_ops = {
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- .read = OP_READ,
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- .write = 0x02,
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- .erase = 0xD8,
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- .status = 0x05,
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-};
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-
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-static struct flash_ops flash_sst_ops = {
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- .read = OP_READ,
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- .write = 0x02,
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- .erase = 0x20,
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- .status = 0x05,
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-};
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-
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-static struct flash_ops flash_atmel_ops = {
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- .read = OP_READ,
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- .write = 0x82,
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- .erase = 0x81,
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- .status = 0xD7,
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-};
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-
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-static struct flash_ops flash_winbond_ops = {
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- .read = OP_READ,
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- .write = 0x02,
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- .erase = 0x20,
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- .status = 0x05,
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-};
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-
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-struct manufacturer_info {
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- const char *name;
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- uint8_t id;
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- struct flash_info *flashes;
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- struct flash_ops *ops;
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-};
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-
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-static struct {
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- struct manufacturer_info *manufacturer;
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- struct flash_info *flash;
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- struct flash_ops *ops;
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- uint8_t manufacturer_id, device_id1, device_id2, device_extid1, device_extid2;
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- unsigned int write_length;
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- unsigned long sector_size, num_sectors;
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-} flash;
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-
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-enum {
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- JED_MANU_SPANSION = 0x01,
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- JED_MANU_ST = 0x20,
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- JED_MANU_SST = 0xBF,
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- JED_MANU_ATMEL = 0x1F,
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- JED_MANU_WINBOND = 0xEF,
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-};
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-
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-static struct manufacturer_info flash_manufacturers[] = {
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- {
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- .name = "Spansion",
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- .id = JED_MANU_SPANSION,
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- .flashes = flash_spansion_serial_flash,
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- .ops = &flash_st_ops,
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- },
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- {
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- .name = "ST",
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- .id = JED_MANU_ST,
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- .flashes = flash_st_serial_flash,
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- .ops = &flash_st_ops,
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- },
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- {
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- .name = "SST",
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- .id = JED_MANU_SST,
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- .flashes = flash_sst_serial_flash,
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- .ops = &flash_sst_ops,
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- },
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- {
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- .name = "Atmel",
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- .id = JED_MANU_ATMEL,
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- .flashes = flash_atmel_dataflash,
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- .ops = &flash_atmel_ops,
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- },
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- {
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- .name = "Winbond",
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- .id = JED_MANU_WINBOND,
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- .flashes = flash_winbond_serial_flash,
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- .ops = &flash_winbond_ops,
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- },
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-};
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-
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-#define TIMEOUT 5000 /* timeout of 5 seconds */
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-
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-/* If part has multiple SPI flashes, assume SPI0 as that is
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- * the one we can boot off of ...
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- */
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-#ifndef pSPI_CTL
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-# define pSPI_CTL pSPI0_CTL
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-# define pSPI_BAUD pSPI0_BAUD
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-# define pSPI_FLG pSPI0_FLG
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-# define pSPI_RDBR pSPI0_RDBR
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-# define pSPI_STAT pSPI0_STAT
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-# define pSPI_TDBR pSPI0_TDBR
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-#endif
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-
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-/* Default to the SPI SSEL that we boot off of:
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- * BF54x, BF537, (everything new?): SSEL1
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- * BF51x, BF533, BF561: SSEL2
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- */
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-#ifndef CONFIG_SPI_FLASH_SSEL
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-# define CONFIG_SPI_FLASH_SSEL BFIN_BOOT_SPI_SSEL
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-#endif
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-#define SSEL_MASK (1 << CONFIG_SPI_FLASH_SSEL)
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-
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-static void SPI_INIT(void)
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-{
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- /* [#3541] This delay appears to be necessary, but not sure
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- * exactly why as the history behind it is non-existant.
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- */
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- *pSPI_CTL = 0;
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- udelay(CONFIG_CCLK_HZ / 25000000);
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-
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- /* enable SPI pins: SSEL, MOSI, MISO, SCK */
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-#ifdef __ADSPBF54x__
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- *pPORTE_FER |= (PE0 | PE1 | PE2 | PE4);
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-#elif defined(__ADSPBF534__) || defined(__ADSPBF536__) || defined(__ADSPBF537__)
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- *pPORTF_FER |= (PF10 | PF11 | PF12 | PF13);
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-#elif defined(__ADSPBF52x__)
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- bfin_write_PORTG_MUX((bfin_read_PORTG_MUX() & ~PORT_x_MUX_0_MASK) | PORT_x_MUX_0_FUNC_3);
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- bfin_write_PORTG_FER(bfin_read_PORTG_FER() | PG1 | PG2 | PG3 | PG4);
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-#elif defined(__ADSPBF51x__)
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- bfin_write_PORTG_MUX((bfin_read_PORTG_MUX() & ~PORT_x_MUX_7_MASK) | PORT_x_MUX_7_FUNC_1);
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- bfin_write_PORTG_FER(bfin_read_PORTG_FER() | PG12 | PG13 | PG14 | PG15);
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-#endif
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-
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- /* initate communication upon write of TDBR */
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- *pSPI_CTL = (SPE | MSTR | CPHA | CPOL | TDBR_CORE);
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- *pSPI_BAUD = CONFIG_SPI_BAUD;
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-}
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-
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-static void SPI_DEINIT(void)
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-{
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- *pSPI_CTL = 0;
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- *pSPI_BAUD = 0;
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- SSYNC();
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-}
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-
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-static void SPI_ON(void)
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-{
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- /* toggle SSEL to reset the device so it'll take a new command */
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- *pSPI_FLG = 0xFF00 | SSEL_MASK;
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- SSYNC();
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-
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- *pSPI_FLG = ((0xFF & ~SSEL_MASK) << 8) | SSEL_MASK;
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- SSYNC();
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-}
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-
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-static void SPI_OFF(void)
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-{
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- /* put SPI settings back to reset state */
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- *pSPI_FLG = 0xFF00;
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- SSYNC();
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-}
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-
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-static uint8_t spi_write_read_byte(uint8_t transmit)
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-{
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- *pSPI_TDBR = transmit;
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- SSYNC();
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-
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- while ((*pSPI_STAT & TXS))
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- if (ctrlc())
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- break;
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- while (!(*pSPI_STAT & SPIF))
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- if (ctrlc())
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- break;
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- while (!(*pSPI_STAT & RXS))
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- if (ctrlc())
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- break;
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-
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- /* Read dummy to empty the receive register */
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- return *pSPI_RDBR;
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-}
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-
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-static uint8_t read_status_register(void)
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-{
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- uint8_t status_register;
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-
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- /* send instruction to read status register */
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- SPI_ON();
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- spi_write_read_byte(flash.ops->status);
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- /* send dummy to receive the status register */
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- status_register = spi_write_read_byte(0);
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- SPI_OFF();
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-
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- return status_register;
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-}
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-
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-static int wait_for_ready_status(void)
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-{
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- ulong start = get_timer(0);
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-
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- while (get_timer(0) - start < TIMEOUT) {
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- switch (flash.manufacturer_id) {
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- case JED_MANU_SPANSION:
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- case JED_MANU_ST:
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- case JED_MANU_SST:
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- case JED_MANU_WINBOND:
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- if (!(read_status_register() & 0x01))
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- return 0;
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- break;
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-
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- case JED_MANU_ATMEL:
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- if (read_status_register() & 0x80)
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- return 0;
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- break;
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- }
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-
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- if (ctrlc()) {
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- puts("\nAbort\n");
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- return -1;
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- }
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- }
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-
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- puts("Timeout\n");
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- return -1;
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-}
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-
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-static int enable_writing(void)
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-{
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- ulong start;
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-
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- if (flash.manufacturer_id == JED_MANU_ATMEL)
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- return 0;
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-
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- /* A write enable instruction must previously have been executed */
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- SPI_ON();
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- spi_write_read_byte(0x06);
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- SPI_OFF();
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-
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- /* The status register will be polled to check the write enable latch "WREN" */
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- start = get_timer(0);
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- while (get_timer(0) - start < TIMEOUT) {
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- if (read_status_register() & 0x02)
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- return 0;
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-
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- if (ctrlc()) {
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- puts("\nAbort\n");
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|
|
- return -1;
|
|
|
|
- }
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- puts("Timeout\n");
|
|
|
|
- return -1;
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-static void write_status_register(uint8_t val)
|
|
|
|
-{
|
|
|
|
- if (flash.manufacturer_id != JED_MANU_SST)
|
|
|
|
- hang();
|
|
|
|
-
|
|
|
|
- if (enable_writing())
|
|
|
|
- return;
|
|
|
|
-
|
|
|
|
- /* send instruction to write status register */
|
|
|
|
- SPI_ON();
|
|
|
|
- spi_write_read_byte(0x01);
|
|
|
|
- /* and clear it! */
|
|
|
|
- spi_write_read_byte(val);
|
|
|
|
- SPI_OFF();
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-/* Request and read the manufacturer and device id of parts which
|
|
|
|
- * are compatible with the JEDEC standard (JEP106) and use that to
|
|
|
|
- * setup other operating conditions.
|
|
|
|
- */
|
|
|
|
-static int spi_detect_part(void)
|
|
|
|
-{
|
|
|
|
- uint16_t dev_id, dev_extid;
|
|
|
|
- size_t i;
|
|
|
|
-
|
|
|
|
- static char called_init;
|
|
|
|
- if (called_init)
|
|
|
|
- return 0;
|
|
|
|
-
|
|
|
|
-#ifdef CONFIG_SPI_FLASH_M25P80
|
|
|
|
- flash.manufacturer_id = JED_MANU_ST;
|
|
|
|
- flash.device_id1 = 0x20;
|
|
|
|
- flash.device_id2 = 0xFF;
|
|
|
|
-#else
|
|
|
|
- SPI_ON();
|
|
|
|
-
|
|
|
|
- /* Send the request for the part identification */
|
|
|
|
- spi_write_read_byte(0x9F);
|
|
|
|
-
|
|
|
|
- /* Now read in the manufacturer id bytes */
|
|
|
|
- do {
|
|
|
|
- flash.manufacturer_id = spi_write_read_byte(0);
|
|
|
|
- if (flash.manufacturer_id == 0x7F)
|
|
|
|
- puts("Warning: unhandled manufacturer continuation byte!\n");
|
|
|
|
- } while (flash.manufacturer_id == 0x7F);
|
|
|
|
-
|
|
|
|
- /* Now read in the first device id byte */
|
|
|
|
- flash.device_id1 = spi_write_read_byte(0);
|
|
|
|
-
|
|
|
|
- /* Now read in the second device id byte */
|
|
|
|
- flash.device_id2 = spi_write_read_byte(0);
|
|
|
|
-
|
|
|
|
- /* Read extended device ids */
|
|
|
|
- flash.device_extid1 = spi_write_read_byte(0);
|
|
|
|
- flash.device_extid2 = spi_write_read_byte(0);
|
|
|
|
-
|
|
|
|
- SPI_OFF();
|
|
|
|
-#endif
|
|
|
|
-
|
|
|
|
- dev_id = (flash.device_id1 << 8) | flash.device_id2;
|
|
|
|
- dev_extid = (flash.device_extid1 << 8) | flash.device_extid2;
|
|
|
|
-
|
|
|
|
- for (i = 0; i < ARRAY_SIZE(flash_manufacturers); ++i) {
|
|
|
|
- if (flash.manufacturer_id == flash_manufacturers[i].id)
|
|
|
|
- break;
|
|
|
|
- }
|
|
|
|
- if (i == ARRAY_SIZE(flash_manufacturers))
|
|
|
|
- goto unknown;
|
|
|
|
-
|
|
|
|
- flash.manufacturer = &flash_manufacturers[i];
|
|
|
|
- flash.ops = flash_manufacturers[i].ops;
|
|
|
|
-
|
|
|
|
- switch (flash.manufacturer_id) {
|
|
|
|
- case JED_MANU_SPANSION:
|
|
|
|
- case JED_MANU_ST:
|
|
|
|
- case JED_MANU_SST:
|
|
|
|
- case JED_MANU_WINBOND:
|
|
|
|
- for (i = 0; flash.manufacturer->flashes[i].name; ++i) {
|
|
|
|
- if (dev_id == flash.manufacturer->flashes[i].id &&
|
|
|
|
- (flash.manufacturer->flashes[i].ext_id == 0 ||
|
|
|
|
- flash.manufacturer->flashes[i].ext_id == dev_extid))
|
|
|
|
- break;
|
|
|
|
- }
|
|
|
|
- if (!flash.manufacturer->flashes[i].name)
|
|
|
|
- goto unknown;
|
|
|
|
-
|
|
|
|
- flash.flash = &flash.manufacturer->flashes[i];
|
|
|
|
- flash.sector_size = flash.flash->sector_size;
|
|
|
|
- flash.num_sectors = flash.flash->num_sectors;
|
|
|
|
-
|
|
|
|
- if (flash.manufacturer_id == JED_MANU_SST)
|
|
|
|
- flash.write_length = 1; /* pwnt :( */
|
|
|
|
- else
|
|
|
|
- flash.write_length = 256;
|
|
|
|
- break;
|
|
|
|
-
|
|
|
|
- case JED_MANU_ATMEL: {
|
|
|
|
- uint8_t status = read_status_register();
|
|
|
|
-
|
|
|
|
- for (i = 0; flash.manufacturer->flashes[i].name; ++i) {
|
|
|
|
- if ((status & 0x3c) == flash.manufacturer->flashes[i].id)
|
|
|
|
- break;
|
|
|
|
- }
|
|
|
|
- if (!flash.manufacturer->flashes[i].name)
|
|
|
|
- goto unknown;
|
|
|
|
-
|
|
|
|
- flash.flash = &flash.manufacturer->flashes[i];
|
|
|
|
- flash.sector_size = flash.flash->sector_size;
|
|
|
|
- flash.num_sectors = flash.flash->num_sectors;
|
|
|
|
-
|
|
|
|
- /* see if flash is in "power of 2" mode */
|
|
|
|
- if (status & 0x1)
|
|
|
|
- flash.sector_size &= ~(1 << (ffs(flash.sector_size) - 1));
|
|
|
|
-
|
|
|
|
- flash.write_length = flash.sector_size;
|
|
|
|
- break;
|
|
|
|
- }
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- /* the SST parts power up with software protection enabled by default */
|
|
|
|
- if (flash.manufacturer_id == JED_MANU_SST)
|
|
|
|
- write_status_register(0);
|
|
|
|
-
|
|
|
|
- called_init = 1;
|
|
|
|
- return 0;
|
|
|
|
-
|
|
|
|
- unknown:
|
|
|
|
- printf("Unknown SPI device: 0x%02X 0x%02X 0x%02X\n",
|
|
|
|
- flash.manufacturer_id, flash.device_id1, flash.device_id2);
|
|
|
|
- return 1;
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-/*
|
|
|
|
- * Function: spi_init_f
|
|
|
|
- * Description: Init SPI-Controller (ROM part)
|
|
|
|
- * return: ---
|
|
|
|
- */
|
|
|
|
-void spi_init_f(void)
|
|
|
|
-{
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-/*
|
|
|
|
- * Function: spi_init_r
|
|
|
|
- * Description: Init SPI-Controller (RAM part) -
|
|
|
|
- * The malloc engine is ready and we can move our buffers to
|
|
|
|
- * normal RAM
|
|
|
|
- * return: ---
|
|
|
|
- */
|
|
|
|
-void spi_init_r(void)
|
|
|
|
-{
|
|
|
|
-#if defined(CONFIG_POST) && (CONFIG_POST & CONFIG_SYS_POST_SPI)
|
|
|
|
- /* Our testing strategy here is pretty basic:
|
|
|
|
- * - fill src memory with an 8-bit pattern
|
|
|
|
- * - write the src memory to the SPI flash
|
|
|
|
- * - read the SPI flash into the dst memory
|
|
|
|
- * - compare src and dst memory regions
|
|
|
|
- * - repeat a few times
|
|
|
|
- * The variations we test for:
|
|
|
|
- * - change the 8-bit pattern a bit
|
|
|
|
- * - change the read/write block size so we know:
|
|
|
|
- * - writes smaller/equal/larger than the buffer work
|
|
|
|
- * - writes smaller/equal/larger than the sector work
|
|
|
|
- * - change the SPI offsets so we know:
|
|
|
|
- * - writing partial sectors works
|
|
|
|
- */
|
|
|
|
- uint8_t *mem_src, *mem_dst;
|
|
|
|
- size_t i, c, l, o;
|
|
|
|
- size_t test_count, errors;
|
|
|
|
- uint8_t pattern;
|
|
|
|
-
|
|
|
|
- SPI_INIT();
|
|
|
|
-
|
|
|
|
- if (spi_detect_part())
|
|
|
|
- goto out;
|
|
|
|
- eeprom_info();
|
|
|
|
-
|
|
|
|
- ulong lengths[] = {
|
|
|
|
- flash.write_length,
|
|
|
|
- flash.write_length * 2,
|
|
|
|
- flash.write_length / 2,
|
|
|
|
- flash.sector_size,
|
|
|
|
- flash.sector_size * 2,
|
|
|
|
- flash.sector_size / 2
|
|
|
|
- };
|
|
|
|
- ulong offsets[] = {
|
|
|
|
- 0,
|
|
|
|
- flash.write_length,
|
|
|
|
- flash.write_length * 2,
|
|
|
|
- flash.write_length / 2,
|
|
|
|
- flash.write_length / 4,
|
|
|
|
- flash.sector_size,
|
|
|
|
- flash.sector_size * 2,
|
|
|
|
- flash.sector_size / 2,
|
|
|
|
- flash.sector_size / 4,
|
|
|
|
- };
|
|
|
|
-
|
|
|
|
- /* the exact addresses are arbitrary ... they just need to not overlap */
|
|
|
|
- mem_src = (void *)(0);
|
|
|
|
- mem_dst = (void *)(max(flash.write_length, flash.sector_size) * 2);
|
|
|
|
-
|
|
|
|
- test_count = 0;
|
|
|
|
- errors = 0;
|
|
|
|
- pattern = 0x00;
|
|
|
|
-
|
|
|
|
- for (i = 0; i < 16; ++i) { /* 16 = 8 bits * 2 iterations */
|
|
|
|
- for (l = 0; l < ARRAY_SIZE(lengths); ++l) {
|
|
|
|
- for (o = 0; o < ARRAY_SIZE(offsets); ++o) {
|
|
|
|
- ulong len = lengths[l];
|
|
|
|
- ulong off = offsets[o];
|
|
|
|
-
|
|
|
|
- printf("Testing pattern 0x%02X of length %5lu and offset %5lu: ", pattern, len, off);
|
|
|
|
-
|
|
|
|
- /* setup the source memory region */
|
|
|
|
- memset(mem_src, pattern, len);
|
|
|
|
-
|
|
|
|
- test_count += 4;
|
|
|
|
- for (c = 0; c < 4; ++c) { /* 4 is just a random repeat count */
|
|
|
|
- if (ctrlc()) {
|
|
|
|
- puts("\nAbort\n");
|
|
|
|
- goto out;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- /* make sure background fill pattern != pattern */
|
|
|
|
- memset(mem_dst, pattern ^ 0xFF, len);
|
|
|
|
-
|
|
|
|
- /* write out the source memory and then read it back and compare */
|
|
|
|
- eeprom_write(0, off, mem_src, len);
|
|
|
|
- eeprom_read(0, off, mem_dst, len);
|
|
|
|
-
|
|
|
|
- if (memcmp(mem_src, mem_dst, len)) {
|
|
|
|
- for (c = 0; c < len; ++c)
|
|
|
|
- if (mem_src[c] != mem_dst[c])
|
|
|
|
- break;
|
|
|
|
- printf(" FAIL @ offset %u, skipping repeats ", c);
|
|
|
|
- ++errors;
|
|
|
|
- break;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- /* XXX: should shrink write region here to test with
|
|
|
|
- * leading/trailing canaries so we know surrounding
|
|
|
|
- * bytes don't get screwed.
|
|
|
|
- */
|
|
|
|
- }
|
|
|
|
- puts("\n");
|
|
|
|
- }
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- /* invert the pattern every other run and shift out bits slowly */
|
|
|
|
- pattern ^= 0xFF;
|
|
|
|
- if (i % 2)
|
|
|
|
- pattern = (pattern | 0x01) << 1;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- if (errors)
|
|
|
|
- printf("SPI FAIL: Out of %i tests, there were %i errors ;(\n", test_count, errors);
|
|
|
|
- else
|
|
|
|
- printf("SPI PASS: %i tests worked!\n", test_count);
|
|
|
|
-
|
|
|
|
- out:
|
|
|
|
- SPI_DEINIT();
|
|
|
|
-
|
|
|
|
-#endif
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-static void transmit_address(uint32_t addr)
|
|
|
|
-{
|
|
|
|
- /* Send the highest byte of the 24 bit address at first */
|
|
|
|
- spi_write_read_byte(addr >> 16);
|
|
|
|
- /* Send the middle byte of the 24 bit address at second */
|
|
|
|
- spi_write_read_byte(addr >> 8);
|
|
|
|
- /* Send the lowest byte of the 24 bit address finally */
|
|
|
|
- spi_write_read_byte(addr);
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-/*
|
|
|
|
- * Read a value from flash for verify purpose
|
|
|
|
- * Inputs: unsigned long ulStart - holds the SPI start address
|
|
|
|
- * int pnData - pointer to store value read from flash
|
|
|
|
- * long lCount - number of elements to read
|
|
|
|
- */
|
|
|
|
-#ifdef CONFIG_SPI_READFLASH_NODMA
|
|
|
|
-static int read_flash(unsigned long address, long count, uchar *buffer)
|
|
|
|
-{
|
|
|
|
- size_t i, j;
|
|
|
|
-
|
|
|
|
- /* Send the read command to SPI device */
|
|
|
|
- SPI_ON();
|
|
|
|
- spi_write_read_byte(flash.ops->read);
|
|
|
|
- transmit_address(address);
|
|
|
|
-
|
|
|
|
-#ifndef CONFIG_SPI_FLASH_SLOW_READ
|
|
|
|
- /* Send dummy byte when doing SPI fast reads */
|
|
|
|
- spi_write_read_byte(0);
|
|
|
|
-#endif
|
|
|
|
-
|
|
|
|
- /* After the SPI device address has been placed on the MOSI pin the data can be */
|
|
|
|
- /* received on the MISO pin. */
|
|
|
|
- j = flash.sector_size << 1;
|
|
|
|
- for (i = 1; i <= count; ++i) {
|
|
|
|
- *buffer++ = spi_write_read_byte(0);
|
|
|
|
- if (!j--) {
|
|
|
|
- puts(".");
|
|
|
|
- j = flash.sector_size;
|
|
|
|
- }
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- SPI_OFF();
|
|
|
|
-
|
|
|
|
- return 0;
|
|
|
|
-}
|
|
|
|
-#else
|
|
|
|
-
|
|
|
|
-#ifdef __ADSPBF54x__
|
|
|
|
-#define bfin_write_DMA_SPI_IRQ_STATUS bfin_write_DMA4_IRQ_STATUS
|
|
|
|
-#define bfin_read_DMA_SPI_IRQ_STATUS bfin_read_DMA4_IRQ_STATUS
|
|
|
|
-#define bfin_write_DMA_SPI_CURR_DESC_PTR bfin_write_DMA4_CURR_DESC_PTR
|
|
|
|
-#define bfin_write_DMA_SPI_CONFIG bfin_write_DMA4_CONFIG
|
|
|
|
-#elif defined(__ADSPBF533__) || defined(__ADSPBF532__) || defined(__ADSPBF531__) || \
|
|
|
|
- defined(__ADSPBF538__) || defined(__ADSPBF539__)
|
|
|
|
-#define bfin_write_DMA_SPI_IRQ_STATUS bfin_write_DMA5_IRQ_STATUS
|
|
|
|
-#define bfin_read_DMA_SPI_IRQ_STATUS bfin_read_DMA5_IRQ_STATUS
|
|
|
|
-#define bfin_write_DMA_SPI_CURR_DESC_PTR bfin_write_DMA5_CURR_DESC_PTR
|
|
|
|
-#define bfin_write_DMA_SPI_CONFIG bfin_write_DMA5_CONFIG
|
|
|
|
-#elif defined(__ADSPBF561__)
|
|
|
|
-#define bfin_write_DMA_SPI_IRQ_STATUS bfin_write_DMA16_IRQ_STATUS
|
|
|
|
-#define bfin_read_DMA_SPI_IRQ_STATUS bfin_read_DMA16_IRQ_STATUS
|
|
|
|
-#define bfin_write_DMA_SPI_CURR_DESC_PTR bfin_write_DMA16_CURR_DESC_PTR
|
|
|
|
-#define bfin_write_DMA_SPI_CONFIG bfin_write_DMA16_CONFIG
|
|
|
|
-#elif defined(__ADSPBF537__) || defined(__ADSPBF536__) || defined(__ADSPBF534__) || \
|
|
|
|
- defined(__ADSPBF52x__) || defined(__ADSPBF51x__)
|
|
|
|
-#define bfin_write_DMA_SPI_IRQ_STATUS bfin_write_DMA7_IRQ_STATUS
|
|
|
|
-#define bfin_read_DMA_SPI_IRQ_STATUS bfin_read_DMA7_IRQ_STATUS
|
|
|
|
-#define bfin_write_DMA_SPI_CURR_DESC_PTR bfin_write_DMA7_CURR_DESC_PTR
|
|
|
|
-#define bfin_write_DMA_SPI_CONFIG bfin_write_DMA7_CONFIG
|
|
|
|
-#else
|
|
|
|
-#error "Please provide SPI DMA channel defines"
|
|
|
|
-#endif
|
|
|
|
-
|
|
|
|
-struct dmadesc_array {
|
|
|
|
- unsigned long start_addr;
|
|
|
|
- unsigned short cfg;
|
|
|
|
- unsigned short x_count;
|
|
|
|
- short x_modify;
|
|
|
|
- unsigned short y_count;
|
|
|
|
- short y_modify;
|
|
|
|
-} __attribute__((packed));
|
|
|
|
-
|
|
|
|
-/*
|
|
|
|
- * Read a value from flash for verify purpose
|
|
|
|
- * Inputs: unsigned long ulStart - holds the SPI start address
|
|
|
|
- * int pnData - pointer to store value read from flash
|
|
|
|
- * long lCount - number of elements to read
|
|
|
|
- */
|
|
|
|
-
|
|
|
|
-static int read_flash(unsigned long address, long count, uchar *buffer)
|
|
|
|
-{
|
|
|
|
- unsigned int ndsize;
|
|
|
|
- struct dmadesc_array dma[2];
|
|
|
|
- /* Send the read command to SPI device */
|
|
|
|
-
|
|
|
|
- if (!count)
|
|
|
|
- return 0;
|
|
|
|
-
|
|
|
|
- dma[0].start_addr = (unsigned long)buffer;
|
|
|
|
- dma[0].x_modify = 1;
|
|
|
|
- if (count <= 65536) {
|
|
|
|
- blackfin_dcache_flush_invalidate_range(buffer, buffer + count);
|
|
|
|
- ndsize = NDSIZE_5;
|
|
|
|
- dma[0].cfg = NDSIZE_0 | WNR | WDSIZE_8 | FLOW_STOP | DMAEN | DI_EN;
|
|
|
|
- dma[0].x_count = count;
|
|
|
|
- } else {
|
|
|
|
- blackfin_dcache_flush_invalidate_range(buffer, buffer + 65536 - 1);
|
|
|
|
- ndsize = NDSIZE_7;
|
|
|
|
- dma[0].cfg = NDSIZE_5 | WNR | WDSIZE_8 | FLOW_ARRAY | DMAEN | DMA2D;
|
|
|
|
- dma[0].x_count = 0; /* 2^16 */
|
|
|
|
- dma[0].y_count = count >> 16; /* count / 2^16 */
|
|
|
|
- dma[0].y_modify = 1;
|
|
|
|
- dma[1].start_addr = (unsigned long)(buffer + (count & ~0xFFFF));
|
|
|
|
- dma[1].cfg = NDSIZE_0 | WNR | WDSIZE_8 | FLOW_STOP | DMAEN | DI_EN;
|
|
|
|
- dma[1].x_count = count & 0xFFFF; /* count % 2^16 */
|
|
|
|
- dma[1].x_modify = 1;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- bfin_write_DMA_SPI_CONFIG(0);
|
|
|
|
- bfin_write_DMA_SPI_IRQ_STATUS(DMA_DONE | DMA_ERR);
|
|
|
|
- bfin_write_DMA_SPI_CURR_DESC_PTR(dma);
|
|
|
|
-
|
|
|
|
- SPI_ON();
|
|
|
|
-
|
|
|
|
- spi_write_read_byte(flash.ops->read);
|
|
|
|
- transmit_address(address);
|
|
|
|
-
|
|
|
|
-#ifndef CONFIG_SPI_FLASH_SLOW_READ
|
|
|
|
- /* Send dummy byte when doing SPI fast reads */
|
|
|
|
- spi_write_read_byte(0);
|
|
|
|
-#endif
|
|
|
|
-
|
|
|
|
- bfin_write_DMA_SPI_CONFIG(ndsize | FLOW_ARRAY | DMAEN);
|
|
|
|
- *pSPI_CTL = (MSTR | CPHA | CPOL | RDBR_DMA | SPE | SZ);
|
|
|
|
- SSYNC();
|
|
|
|
-
|
|
|
|
- /*
|
|
|
|
- * We already invalidated the first 64k,
|
|
|
|
- * now while we just wait invalidate the remaining part.
|
|
|
|
- * Its not likely that the DMA is going to overtake
|
|
|
|
- */
|
|
|
|
- if (count > 65536)
|
|
|
|
- blackfin_dcache_flush_invalidate_range(buffer + 65536,
|
|
|
|
- buffer + count);
|
|
|
|
-
|
|
|
|
- while (!(bfin_read_DMA_SPI_IRQ_STATUS() & DMA_DONE))
|
|
|
|
- if (ctrlc())
|
|
|
|
- break;
|
|
|
|
-
|
|
|
|
- SPI_OFF();
|
|
|
|
-
|
|
|
|
- *pSPI_CTL = 0;
|
|
|
|
-
|
|
|
|
- bfin_write_DMA_SPI_CONFIG(0);
|
|
|
|
-
|
|
|
|
- *pSPI_CTL = (SPE | MSTR | CPHA | CPOL | TDBR_CORE);
|
|
|
|
-
|
|
|
|
- return 0;
|
|
|
|
-}
|
|
|
|
-#endif
|
|
|
|
-
|
|
|
|
-static long address_to_sector(unsigned long address)
|
|
|
|
-{
|
|
|
|
- if (address > (flash.num_sectors * flash.sector_size) - 1)
|
|
|
|
- return -1;
|
|
|
|
- return address / flash.sector_size;
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-static int erase_sector(int address)
|
|
|
|
-{
|
|
|
|
- /* sector gets checked in higher function, so assume it's valid
|
|
|
|
- * here and figure out the offset of the sector in flash
|
|
|
|
- */
|
|
|
|
- if (enable_writing())
|
|
|
|
- return -1;
|
|
|
|
-
|
|
|
|
- /*
|
|
|
|
- * Send the erase block command to the flash followed by the 24 address
|
|
|
|
- * to point to the start of a sector
|
|
|
|
- */
|
|
|
|
- SPI_ON();
|
|
|
|
- spi_write_read_byte(flash.ops->erase);
|
|
|
|
- transmit_address(address);
|
|
|
|
- SPI_OFF();
|
|
|
|
-
|
|
|
|
- return wait_for_ready_status();
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-/* Write [count] bytes out of [buffer] into the given SPI [address] */
|
|
|
|
-static long write_flash(unsigned long address, long count, uchar *buffer)
|
|
|
|
-{
|
|
|
|
- long i, write_buffer_size;
|
|
|
|
-
|
|
|
|
- if (enable_writing())
|
|
|
|
- return -1;
|
|
|
|
-
|
|
|
|
- /* Send write command followed by the 24 bit address */
|
|
|
|
- SPI_ON();
|
|
|
|
- spi_write_read_byte(flash.ops->write);
|
|
|
|
- transmit_address(address);
|
|
|
|
-
|
|
|
|
- /* Shoot out a single write buffer */
|
|
|
|
- write_buffer_size = min(count, flash.write_length);
|
|
|
|
- for (i = 0; i < write_buffer_size; ++i)
|
|
|
|
- spi_write_read_byte(buffer[i]);
|
|
|
|
-
|
|
|
|
- SPI_OFF();
|
|
|
|
-
|
|
|
|
- /* Wait for the flash to do its thing */
|
|
|
|
- if (wait_for_ready_status()) {
|
|
|
|
- puts("SPI Program Time out! ");
|
|
|
|
- return -1;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- return i;
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-/* Write [count] bytes out of [buffer] into the given SPI [address] */
|
|
|
|
-static int write_sector(unsigned long address, long count, uchar *buffer)
|
|
|
|
-{
|
|
|
|
- long write_cnt;
|
|
|
|
-
|
|
|
|
- while (count != 0) {
|
|
|
|
- write_cnt = write_flash(address, count, buffer);
|
|
|
|
- if (write_cnt == -1)
|
|
|
|
- return -1;
|
|
|
|
-
|
|
|
|
- /* Now that we've sent some bytes out to the flash, update
|
|
|
|
- * our counters a bit
|
|
|
|
- */
|
|
|
|
- count -= write_cnt;
|
|
|
|
- address += write_cnt;
|
|
|
|
- buffer += write_cnt;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- /* return the appropriate error code */
|
|
|
|
- return 0;
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-/*
|
|
|
|
- * Function: spi_write
|
|
|
|
- */
|
|
|
|
-ssize_t spi_write(uchar *addr, int alen, uchar *buffer, int len)
|
|
|
|
-{
|
|
|
|
- unsigned long offset;
|
|
|
|
- int start_sector, end_sector;
|
|
|
|
- int start_byte, end_byte;
|
|
|
|
- uchar *temp = NULL;
|
|
|
|
- int num, ret = 0;
|
|
|
|
-
|
|
|
|
- SPI_INIT();
|
|
|
|
-
|
|
|
|
- if (spi_detect_part())
|
|
|
|
- goto out;
|
|
|
|
-
|
|
|
|
- offset = addr[0] << 16 | addr[1] << 8 | addr[2];
|
|
|
|
-
|
|
|
|
- /* Get the start block number */
|
|
|
|
- start_sector = address_to_sector(offset);
|
|
|
|
- if (start_sector == -1) {
|
|
|
|
- puts("Invalid sector! ");
|
|
|
|
- goto out;
|
|
|
|
- }
|
|
|
|
- end_sector = address_to_sector(offset + len - 1);
|
|
|
|
- if (end_sector == -1) {
|
|
|
|
- puts("Invalid sector! ");
|
|
|
|
- goto out;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- /* Since flashes operate in sector units but the eeprom command
|
|
|
|
- * operates as a continuous stream of bytes, we need to emulate
|
|
|
|
- * the eeprom behavior. So here we read in the sector, overlay
|
|
|
|
- * any bytes we're actually modifying, erase the sector, and
|
|
|
|
- * then write back out the new sector.
|
|
|
|
- */
|
|
|
|
- temp = malloc(flash.sector_size);
|
|
|
|
- if (!temp) {
|
|
|
|
- puts("Malloc for sector failed! ");
|
|
|
|
- goto out;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- for (num = start_sector; num <= end_sector; num++) {
|
|
|
|
- unsigned long address = num * flash.sector_size;
|
|
|
|
-
|
|
|
|
- /* XXX: should add an optimization when spanning sectors:
|
|
|
|
- * No point in reading in a sector if we're going to be
|
|
|
|
- * clobbering the whole thing. Need to also add a test
|
|
|
|
- * case to make sure the optimization is correct.
|
|
|
|
- */
|
|
|
|
- if (read_flash(address, flash.sector_size, temp)) {
|
|
|
|
- puts("Read sector failed! ");
|
|
|
|
- len = 0;
|
|
|
|
- break;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- start_byte = max(address, offset);
|
|
|
|
- end_byte = address + flash.sector_size - 1;
|
|
|
|
- if (end_byte > (offset + len))
|
|
|
|
- end_byte = (offset + len - 1);
|
|
|
|
-
|
|
|
|
- memcpy(temp + start_byte - address,
|
|
|
|
- buffer + start_byte - offset,
|
|
|
|
- end_byte - start_byte + 1);
|
|
|
|
-
|
|
|
|
- if (erase_sector(address)) {
|
|
|
|
- puts("Erase sector failed! ");
|
|
|
|
- goto out;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- if (write_sector(address, flash.sector_size, temp)) {
|
|
|
|
- puts("Write sector failed! ");
|
|
|
|
- goto out;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- puts(".");
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- ret = len;
|
|
|
|
-
|
|
|
|
- out:
|
|
|
|
- free(temp);
|
|
|
|
-
|
|
|
|
- SPI_DEINIT();
|
|
|
|
-
|
|
|
|
- return ret;
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-/*
|
|
|
|
- * Function: spi_read
|
|
|
|
- */
|
|
|
|
-ssize_t spi_read(uchar *addr, int alen, uchar *buffer, int len)
|
|
|
|
-{
|
|
|
|
- unsigned long offset;
|
|
|
|
-
|
|
|
|
- SPI_INIT();
|
|
|
|
-
|
|
|
|
- if (spi_detect_part())
|
|
|
|
- len = 0;
|
|
|
|
- else {
|
|
|
|
- offset = addr[0] << 16 | addr[1] << 8 | addr[2];
|
|
|
|
- read_flash(offset, len, buffer);
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- SPI_DEINIT();
|
|
|
|
-
|
|
|
|
- return len;
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-/*
|
|
|
|
- * Spit out some useful information about the SPI eeprom
|
|
|
|
- */
|
|
|
|
-int eeprom_info(void)
|
|
|
|
-{
|
|
|
|
- int ret = 0;
|
|
|
|
-
|
|
|
|
- SPI_INIT();
|
|
|
|
-
|
|
|
|
- if (spi_detect_part())
|
|
|
|
- ret = 1;
|
|
|
|
- else
|
|
|
|
- printf("SPI Device: %s 0x%02X (%s) 0x%02X 0x%02X\n"
|
|
|
|
- "Parameters: num sectors = %lu, sector size = %lu, write size = %i\n"
|
|
|
|
- "Flash Size: %lu mbit (%lu mbyte)\n"
|
|
|
|
- "Status: 0x%02X\n",
|
|
|
|
- flash.flash->name, flash.manufacturer_id, flash.manufacturer->name,
|
|
|
|
- flash.device_id1, flash.device_id2, flash.num_sectors,
|
|
|
|
- flash.sector_size, flash.write_length,
|
|
|
|
- (flash.num_sectors * flash.sector_size) >> 17,
|
|
|
|
- (flash.num_sectors * flash.sector_size) >> 20,
|
|
|
|
- read_status_register());
|
|
|
|
-
|
|
|
|
- SPI_DEINIT();
|
|
|
|
-
|
|
|
|
- return ret;
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-#endif
|
|
|