* Copyright (C) 2009 Michael Schwingen *
* michael@schwingen.org *
* Copyright (C) 2010 Øyvind Harboe <oyvind.harboe@zylin.com> *
+ * Copyright (C) 2010 by Antonio Borneo <borneo.antonio@gmail.com> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
{CFI_MFR_SST, 0x00D7, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_5555_2AAA]},
{CFI_MFR_SST, 0x2780, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_5555_2AAA]},
{CFI_MFR_ATMEL, 0x00C8, cfi_fixup_atmel_reversed_erase_regions, NULL},
+ {CFI_MFR_FUJITSU, 0x22ea, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_555_2AA]},
{CFI_MFR_FUJITSU, 0x226b, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_5555_2AAA]},
{CFI_MFR_AMIC, 0xb31a, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_555_2AA]},
{CFI_MFR_MX, 0x225b, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_555_2AA]},
}
return bank->base + bank->sectors[sector].offset + offset * bank->bus_width;
}
-
}
static void cfi_command(struct flash_bank *bank, uint8_t cmd, uint8_t *cmd_buf)
data[(3 * bank->bus_width) - 1] << 16 | data[(4 * bank->bus_width) - 1] << 24;
}
+static int cfi_reset(struct flash_bank *bank)
+{
+ struct cfi_flash_bank *cfi_info = bank->driver_priv;
+ int retval = ERROR_OK;
+
+ if ((retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0))) != ERROR_OK)
+ {
+ return retval;
+ }
+
+ if ((retval = cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0))) != ERROR_OK)
+ {
+ return retval;
+ }
+
+ if (cfi_info->manufacturer == 0x20 &&
+ (cfi_info->device_id == 0x227E || cfi_info->device_id == 0x7E))
+ {
+ /* Numonix M29W128G is cmd 0xFF intolerant - causes internal undefined state
+ * so we send an extra 0xF0 reset to fix the bug */
+ if ((retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x00))) != ERROR_OK)
+ {
+ return retval;
+ }
+ }
+
+ return retval;
+}
+
static void cfi_intel_clear_status_register(struct flash_bank *bank)
{
struct target *target = bank->target;
if ((pri_ext->pri[0] != 'P') || (pri_ext->pri[1] != 'R') || (pri_ext->pri[2] != 'I'))
{
- if ((retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0))) != ERROR_OK)
- {
- return retval;
- }
- if ((retval = cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0))) != ERROR_OK)
+ if ((retval = cfi_reset(bank)) != ERROR_OK)
{
return retval;
}
return ERROR_FLASH_BANK_INVALID;
}
+ /* both widths must:
+ * - not exceed max value;
+ * - not be null;
+ * - be equal to a power of 2.
+ * bus must be wide enought to hold one chip */
if ((bank->chip_width > CFI_MAX_CHIP_WIDTH)
- || (bank->bus_width > CFI_MAX_BUS_WIDTH))
+ || (bank->bus_width > CFI_MAX_BUS_WIDTH)
+ || (bank->chip_width == 0)
+ || (bank->bus_width == 0)
+ || (bank->chip_width & (bank->chip_width - 1))
+ || (bank->bus_width & (bank->bus_width - 1))
+ || (bank->chip_width > bank->bus_width))
{
LOG_ERROR("chip and bus width have to specified in bytes");
return ERROR_FLASH_BANK_INVALID;
int retval;
struct cfi_flash_bank *cfi_info = bank->driver_priv;
struct cfi_intel_pri_ext *pri_ext = cfi_info->pri_ext;
- struct target *target = bank->target; /* FIXME: to be removed */
- uint8_t command[CFI_MAX_BUS_WIDTH]; /* FIXME: to be removed */
int retry = 0;
int i;
for (i = first; i <= last; i++)
{
- cfi_command(bank, 0x60, command); /* FIXME: to be removed */
- LOG_DEBUG("address: 0x%4.4" PRIx32 ", command: 0x%4.4" PRIx32, flash_address(bank, i, 0x0), target_buffer_get_u32(target, command));
if ((retval = cfi_send_command(bank, 0x60, flash_address(bank, i, 0x0))) != ERROR_OK)
{
return retval;
}
if (set)
{
- cfi_command(bank, 0x01, command); /* FIXME: to be removed */
- LOG_DEBUG("address: 0x%4.4" PRIx32 ", command: 0x%4.4" PRIx32 , flash_address(bank, i, 0x0), target_buffer_get_u32(target, command));
if ((retval = cfi_send_command(bank, 0x01, flash_address(bank, i, 0x0))) != ERROR_OK)
{
return retval;
}
else
{
- cfi_command(bank, 0xd0, command); /* FIXME: to be removed */
- LOG_DEBUG("address: 0x%4.4" PRIx32 ", command: 0x%4.4" PRIx32, flash_address(bank, i, 0x0), target_buffer_get_u32(target, command));
if ((retval = cfi_send_command(bank, 0xd0, flash_address(bank, i, 0x0))) != ERROR_OK)
{
return retval;
*/
if ((!set) && (!(pri_ext->feature_support & 0x20)))
{
+ /* FIX!!! this code path is broken!!!
+ *
+ * The correct approach is:
+ *
+ * 1. read out current protection status
+ *
+ * 2. override read out protection status w/unprotected.
+ *
+ * 3. re-protect what should be protected.
+ *
+ */
for (i = 0; i < bank->num_sectors; i++)
{
if (bank->sectors[i].is_protected == 1)
}
}
-/* FIXME Replace this by a simple memcpy() - still unsure about sideeffects */
-static void cfi_add_byte(struct flash_bank *bank, uint8_t *word, uint8_t byte)
-{
- /* struct target *target = bank->target; */
-
- int i;
-
- /* NOTE:
- * The data to flash must not be changed in endian! We write a bytestrem in
- * target byte order already. Only the control and status byte lane of the flash
- * WSM is interpreted by the CPU in different ways, when read a uint16_t or uint32_t
- * word (data seems to be in the upper or lower byte lane for uint16_t accesses).
- */
-
-#if 0
- if (target->endianness == TARGET_LITTLE_ENDIAN)
- {
-#endif
- /* shift bytes */
- for (i = 0; i < bank->bus_width - 1; i++)
- word[i] = word[i + 1];
- word[bank->bus_width - 1] = byte;
-#if 0
- }
- else
- {
- /* shift bytes */
- for (i = bank->bus_width - 1; i > 0; i--)
- word[i] = word[i - 1];
- word[0] = byte;
- }
-#endif
-}
-
/* Convert code image to target endian */
/* FIXME create general block conversion fcts in target.c?) */
static void cfi_fix_code_endian(struct target *target, uint8_t *dest, const uint32_t *src, uint32_t count)
struct target *target = bank->target;
/* Calculate buffer size and boundary mask */
+ /* buffersize is (buffer size per chip) * (number of chips) */
+ /* bufferwsize is buffersize in words */
uint32_t buffersize = (1UL << cfi_info->max_buf_write_size) * (bank->bus_width / bank->chip_width);
uint32_t buffermask = buffersize-1;
- uint32_t bufferwsize;
+ uint32_t bufferwsize = buffersize / bank->bus_width;
/* Check for valid range */
if (address & buffermask)
bank->base, address, cfi_info->max_buf_write_size);
return ERROR_FLASH_OPERATION_FAILED;
}
- switch (bank->chip_width)
- {
- case 4 : bufferwsize = buffersize / 4; break;
- case 2 : bufferwsize = buffersize / 2; break;
- case 1 : bufferwsize = buffersize; break;
- default:
- LOG_ERROR("Unsupported chip width %d", bank->chip_width);
- return ERROR_FLASH_OPERATION_FAILED;
- }
-
- bufferwsize/=(bank->bus_width / bank->chip_width);
-
/* Check for valid size */
if (wordcount > bufferwsize)
struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
/* Calculate buffer size and boundary mask */
+ /* buffersize is (buffer size per chip) * (number of chips) */
+ /* bufferwsize is buffersize in words */
uint32_t buffersize = (1UL << cfi_info->max_buf_write_size) * (bank->bus_width / bank->chip_width);
uint32_t buffermask = buffersize-1;
- uint32_t bufferwsize;
+ uint32_t bufferwsize = buffersize / bank->bus_width;
/* Check for valid range */
if (address & buffermask)
LOG_ERROR("Write address at base 0x%" PRIx32 ", address %" PRIx32 " not aligned to 2^%d boundary", bank->base, address, cfi_info->max_buf_write_size);
return ERROR_FLASH_OPERATION_FAILED;
}
- switch (bank->chip_width)
- {
- case 4 : bufferwsize = buffersize / 4; break;
- case 2 : bufferwsize = buffersize / 2; break;
- case 1 : bufferwsize = buffersize; break;
- default:
- LOG_ERROR("Unsupported chip width %d", bank->chip_width);
- return ERROR_FLASH_OPERATION_FAILED;
- }
-
- bufferwsize/=(bank->bus_width / bank->chip_width);
/* Check for valid size */
if (wordcount > bufferwsize)
return ERROR_FLASH_OPERATION_FAILED;
}
+static int cfi_read(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
+{
+ struct cfi_flash_bank *cfi_info = bank->driver_priv;
+ struct target *target = bank->target;
+ uint32_t address = bank->base + offset;
+ uint32_t read_p;
+ int align; /* number of unaligned bytes */
+ uint8_t current_word[CFI_MAX_BUS_WIDTH];
+ int i;
+ int retval;
+
+ LOG_DEBUG("reading buffer of %i byte at 0x%8.8x",
+ (int)count, (unsigned)offset);
+
+ if (bank->target->state != TARGET_HALTED)
+ {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ if (offset + count > bank->size)
+ return ERROR_FLASH_DST_OUT_OF_BANK;
+
+ if (cfi_info->qry[0] != 'Q')
+ return ERROR_FLASH_BANK_NOT_PROBED;
+
+ /* start at the first byte of the first word (bus_width size) */
+ read_p = address & ~(bank->bus_width - 1);
+ if ((align = address - read_p) != 0)
+ {
+ LOG_INFO("Fixup %d unaligned read head bytes", align);
+
+ /* read a complete word from flash */
+ if ((retval = target_read_memory(target, read_p, bank->bus_width, 1, current_word)) != ERROR_OK)
+ return retval;
+
+ /* take only bytes we need */
+ for (i = align; (i < bank->bus_width) && (count > 0); i++, count--)
+ *buffer++ = current_word[i];
+
+ read_p += bank->bus_width;
+ }
+
+ align = count / bank->bus_width;
+ if (align)
+ {
+ if ((retval = target_read_memory(target, read_p, bank->bus_width, align, buffer)) != ERROR_OK)
+ return retval;
+
+ read_p += align * bank->bus_width;
+ buffer += align * bank->bus_width;
+ count -= align * bank->bus_width;
+ }
+
+ if (count)
+ {
+ LOG_INFO("Fixup %d unaligned read tail bytes", count);
+
+ /* read a complete word from flash */
+ if ((retval = target_read_memory(target, read_p, bank->bus_width, 1, current_word)) != ERROR_OK)
+ return retval;
+
+ /* take only bytes we need */
+ for (i = 0; (i < bank->bus_width) && (count > 0); i++, count--)
+ *buffer++ = current_word[i];
+ }
+
+ return ERROR_OK;
+}
+
static int cfi_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
{
struct cfi_flash_bank *cfi_info = bank->driver_priv;
struct target *target = bank->target;
uint32_t address = bank->base + offset; /* address of first byte to be programmed */
- uint32_t write_p, copy_p;
+ uint32_t write_p;
int align; /* number of unaligned bytes */
int blk_count; /* number of bus_width bytes for block copy */
uint8_t current_word[CFI_MAX_BUS_WIDTH * 4]; /* word (bus_width size) currently being programmed */
{
LOG_INFO("Fixup %d unaligned head bytes", align);
- for (i = 0; i < bank->bus_width; i++)
- current_word[i] = 0;
- copy_p = write_p;
-
- /* copy bytes before the first write address */
- for (i = 0; i < align; ++i, ++copy_p)
- {
- uint8_t byte;
- if ((retval = target_read_memory(target, copy_p, 1, 1, &byte)) != ERROR_OK)
- {
- return retval;
- }
- cfi_add_byte(bank, current_word, byte);
- }
-
- /* add bytes from the buffer */
- for (; (i < bank->bus_width) && (count > 0); i++)
- {
- cfi_add_byte(bank, current_word, *buffer++);
- count--;
- copy_p++;
- }
+ /* read a complete word from flash */
+ if ((retval = target_read_memory(target, write_p, bank->bus_width, 1, current_word)) != ERROR_OK)
+ return retval;
- /* if the buffer is already finished, copy bytes after the last write address */
- for (; (count == 0) && (i < bank->bus_width); ++i, ++copy_p)
- {
- uint8_t byte;
- if ((retval = target_read_memory(target, copy_p, 1, 1, &byte)) != ERROR_OK)
- {
- return retval;
- }
- cfi_add_byte(bank, current_word, byte);
- }
+ /* replace only bytes that must be written */
+ for (i = align; (i < bank->bus_width) && (count > 0); i++, count--)
+ current_word[i] = *buffer++;
retval = cfi_write_word(bank, current_word, write_p);
if (retval != ERROR_OK)
return retval;
- write_p = copy_p;
+ write_p += bank->bus_width;
}
/* handle blocks of bus_size aligned bytes */
{
if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
{
- //adjust buffersize for chip width
+ /* Calculate buffer size and boundary mask */
+ /* buffersize is (buffer size per chip) * (number of chips) */
+ /* bufferwsize is buffersize in words */
uint32_t buffersize = (1UL << cfi_info->max_buf_write_size) * (bank->bus_width / bank->chip_width);
uint32_t buffermask = buffersize-1;
- uint32_t bufferwsize;
-
- switch (bank->chip_width)
- {
- case 4 : bufferwsize = buffersize / 4; break;
- case 2 : bufferwsize = buffersize / 2; break;
- case 1 : bufferwsize = buffersize; break;
- default:
- LOG_ERROR("Unsupported chip width %d", bank->chip_width);
- return ERROR_FLASH_OPERATION_FAILED;
- }
-
- bufferwsize/=(bank->bus_width / bank->chip_width);
+ uint32_t bufferwsize = buffersize / bank->bus_width;
/* fall back to memory writes */
while (count >= (uint32_t)bank->bus_width)
if (fallback)
{
for (i = 0; i < bank->bus_width; i++)
- current_word[i] = 0;
-
- for (i = 0; i < bank->bus_width; i++)
- {
- cfi_add_byte(bank, current_word, *buffer++);
- }
+ current_word[i] = *buffer++;
retval = cfi_write_word(bank, current_word, write_p);
if (retval != ERROR_OK)
}
/* return to read array mode, so we can read from flash again for padding */
- if ((retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0))) != ERROR_OK)
- {
- return retval;
- }
- if ((retval = cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0))) != ERROR_OK)
+ if ((retval = cfi_reset(bank)) != ERROR_OK)
{
return retval;
}
{
LOG_INFO("Fixup %" PRId32 " unaligned tail bytes", count);
- copy_p = write_p;
- for (i = 0; i < bank->bus_width; i++)
- current_word[i] = 0;
+ /* read a complete word from flash */
+ if ((retval = target_read_memory(target, write_p, bank->bus_width, 1, current_word)) != ERROR_OK)
+ return retval;
+
+ /* replace only bytes that must be written */
+ for (i = 0; (i < bank->bus_width) && (count > 0); i++, count--)
+ current_word[i] = *buffer++;
- for (i = 0; (i < bank->bus_width) && (count > 0); ++i, ++copy_p)
- {
- cfi_add_byte(bank, current_word, *buffer++);
- count--;
- }
- for (; i < bank->bus_width; ++i, ++copy_p)
- {
- uint8_t byte;
- if ((retval = target_read_memory(target, copy_p, 1, 1, &byte)) != ERROR_OK)
- {
- return retval;
- }
- cfi_add_byte(bank, current_word, byte);
- }
retval = cfi_write_word(bank, current_word, write_p);
if (retval != ERROR_OK)
return retval;
}
/* return to read array mode */
- if ((retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0))) != ERROR_OK)
- {
- return retval;
- }
- return cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0));
+ return cfi_reset(bank);
}
static void cfi_fixup_atmel_reversed_erase_regions(struct flash_bank *bank, void *param)
if ((cfi_info->qry[0] != 'Q') || (cfi_info->qry[1] != 'R') || (cfi_info->qry[2] != 'Y'))
{
- if ((retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0))) != ERROR_OK)
- {
- return retval;
- }
- if ((retval = cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0))) != ERROR_OK)
+ if ((retval = cfi_reset(bank)) != ERROR_OK)
{
return retval;
}
uint32_t unlock1 = 0x555;
uint32_t unlock2 = 0x2aa;
int retval;
+ uint8_t value_buf0[CFI_MAX_BUS_WIDTH], value_buf1[CFI_MAX_BUS_WIDTH];
if (bank->target->state != TARGET_HALTED)
{
return retval;
}
- if (bank->chip_width == 1)
+ if ((retval = target_read_memory(target, flash_address(bank, 0, 0x00), bank->bus_width, 1, value_buf0)) != ERROR_OK)
{
- uint8_t manufacturer, device_id;
- if ((retval = target_read_u8(target, flash_address(bank, 0, 0x00), &manufacturer)) != ERROR_OK)
- {
- return retval;
- }
- if ((retval = target_read_u8(target, flash_address(bank, 0, 0x01), &device_id)) != ERROR_OK)
- {
- return retval;
- }
- cfi_info->manufacturer = manufacturer;
- cfi_info->device_id = device_id;
+ return retval;
}
- else if (bank->chip_width == 2)
+ if ((retval = target_read_memory(target, flash_address(bank, 0, 0x01), bank->bus_width, 1, value_buf1)) != ERROR_OK)
{
- if ((retval = target_read_u16(target, flash_address(bank, 0, 0x00), &cfi_info->manufacturer)) != ERROR_OK)
- {
- return retval;
- }
- if ((retval = target_read_u16(target, flash_address(bank, 0, 0x01), &cfi_info->device_id)) != ERROR_OK)
- {
- return retval;
- }
+ return retval;
+ }
+ switch (bank->chip_width) {
+ case 1:
+ cfi_info->manufacturer = *value_buf0;
+ cfi_info->device_id = *value_buf1;
+ break;
+ case 2:
+ cfi_info->manufacturer = target_buffer_get_u16(target, value_buf0);
+ cfi_info->device_id = target_buffer_get_u16(target, value_buf1);
+ break;
+ case 4:
+ cfi_info->manufacturer = target_buffer_get_u32(target, value_buf0);
+ cfi_info->device_id = target_buffer_get_u32(target, value_buf1);
+ break;
+ default:
+ LOG_ERROR("Unsupported bank chipwidth %d, can't probe memory", bank->chip_width);
+ return ERROR_FLASH_OPERATION_FAILED;
}
LOG_INFO("Flash Manufacturer/Device: 0x%04x 0x%04x", cfi_info->manufacturer, cfi_info->device_id);
/* switch back to read array mode */
- if ((retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x00))) != ERROR_OK)
- {
- return retval;
- }
- if ((retval = cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x00))) != ERROR_OK)
+ if ((retval = cfi_reset(bank)) != ERROR_OK)
{
return retval;
}
/* return to read array mode
* we use both reset commands, as some Intel flashes fail to recognize the 0xF0 command
*/
- if ((retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0))) != ERROR_OK)
- {
- return retval;
- }
- if ((retval = cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0))) != ERROR_OK)
+ if ((retval = cfi_reset(bank)) != ERROR_OK)
{
return retval;
}
return cfi_probe(bank);
}
-
static int cfi_intel_protect_check(struct flash_bank *bank)
{
int retval;
.erase = cfi_erase,
.protect = cfi_protect,
.write = cfi_write,
+ .read = cfi_read,
.probe = cfi_probe,
.auto_probe = cfi_auto_probe,
+ /* FIXME: access flash at bus_width size */
.erase_check = default_flash_blank_check,
.protect_check = cfi_protect_check,
.info = cfi_info,
Code Review / openocd.git / blobdiff