/***************************************************************************
+ * Copyright (C) 2005 by Dominic Rath <Dominic.Rath@gmx.de> *
+ * Copyright (C) 2007,2008 Øyvind Harboe <oyvind.harboe@zylin.com> *
+ * Copyright (C) 2008 by Spencer Oliver <spen@spen-soft.co.uk> *
* Copyright (C) 2009 Zachary T Welch <zw@superlucidity.net> *
* *
* This program is free software; you can redistribute it and/or modify *
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
-#include <flash/flash.h>
+#include <flash/common.h>
+#include <flash/nor/core.h>
#include <flash/nor/imp.h>
#include <target/image.h>
-// in flash.c, to be moved here
-extern struct flash_driver *flash_drivers[];
-extern struct flash_bank *flash_banks;
-struct flash_driver *flash_driver_find_by_name(const char *name)
-{
- for (unsigned i = 0; flash_drivers[i]; i++)
- {
- if (strcmp(name, flash_drivers[i]->name) == 0)
- return flash_drivers[i];
- }
- return NULL;
-}
+struct flash_bank *flash_banks;
int flash_driver_erase(struct flash_bank *bank, int first, int last)
{
return retval;
}
-
void flash_bank_add(struct flash_bank *bank)
{
/* put flash bank in linked list */
return flash_banks;
}
+struct flash_bank *get_flash_bank_by_num_noprobe(int num)
+{
+ struct flash_bank *p;
+ int i = 0;
+
+ for (p = flash_banks; p; p = p->next)
+ {
+ if (i++ == num)
+ {
+ return p;
+ }
+ }
+ LOG_ERROR("flash bank %d does not exist", num);
+ return NULL;
+}
+
+int flash_get_bank_count(void)
+{
+ struct flash_bank *p;
+ int i = 0;
+ for (p = flash_banks; p; p = p->next)
+ {
+ i++;
+ }
+ return i;
+}
+
+struct flash_bank *get_flash_bank_by_name(const char *name)
+{
+ unsigned requested = get_flash_name_index(name);
+ unsigned found = 0;
+
+ struct flash_bank *bank;
+ for (bank = flash_banks; NULL != bank; bank = bank->next)
+ {
+ if (strcmp(bank->name, name) == 0)
+ return bank;
+ if (!flash_driver_name_matches(bank->driver->name, name))
+ continue;
+ if (++found < requested)
+ continue;
+ return bank;
+ }
+ return NULL;
+}
+
+struct flash_bank *get_flash_bank_by_num(int num)
+{
+ struct flash_bank *p = get_flash_bank_by_num_noprobe(num);
+ int retval;
+
+ if (p == NULL)
+ return NULL;
+
+ retval = p->driver->auto_probe(p);
+
+ if (retval != ERROR_OK)
+ {
+ LOG_ERROR("auto_probe failed %d\n", retval);
+ return NULL;
+ }
+ return p;
+}
+
+/* lookup flash bank by address */
+struct flash_bank *get_flash_bank_by_addr(struct target *target, uint32_t addr)
+{
+ struct flash_bank *c;
+
+ /* cycle through bank list */
+ for (c = flash_banks; c; c = c->next)
+ {
+ int retval;
+ retval = c->driver->auto_probe(c);
+
+ if (retval != ERROR_OK)
+ {
+ LOG_ERROR("auto_probe failed %d\n", retval);
+ return NULL;
+ }
+ /* check whether address belongs to this flash bank */
+ if ((addr >= c->base) && (addr <= c->base + (c->size - 1)) && target == c->target)
+ return c;
+ }
+ LOG_ERROR("No flash at address 0x%08" PRIx32 "\n", addr);
+ return NULL;
+}
+
+int default_flash_mem_blank_check(struct flash_bank *bank)
+{
+ struct target *target = bank->target;
+ const int buffer_size = 1024;
+ int i;
+ uint32_t nBytes;
+ int retval = ERROR_OK;
+
+ if (bank->target->state != TARGET_HALTED)
+ {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ uint8_t *buffer = malloc(buffer_size);
+
+ for (i = 0; i < bank->num_sectors; i++)
+ {
+ uint32_t j;
+ bank->sectors[i].is_erased = 1;
+
+ for (j = 0; j < bank->sectors[i].size; j += buffer_size)
+ {
+ uint32_t chunk;
+ chunk = buffer_size;
+ if (chunk > (j - bank->sectors[i].size))
+ {
+ chunk = (j - bank->sectors[i].size);
+ }
+
+ retval = target_read_memory(target, bank->base + bank->sectors[i].offset + j, 4, chunk/4, buffer);
+ if (retval != ERROR_OK)
+ {
+ goto done;
+ }
+
+ for (nBytes = 0; nBytes < chunk; nBytes++)
+ {
+ if (buffer[nBytes] != 0xFF)
+ {
+ bank->sectors[i].is_erased = 0;
+ break;
+ }
+ }
+ }
+ }
+
+ done:
+ free(buffer);
+
+ return retval;
+}
+
+int default_flash_blank_check(struct flash_bank *bank)
+{
+ struct target *target = bank->target;
+ int i;
+ int retval;
+ int fast_check = 0;
+ uint32_t blank;
+
+ if (bank->target->state != TARGET_HALTED)
+ {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ for (i = 0; i < bank->num_sectors; i++)
+ {
+ uint32_t address = bank->base + bank->sectors[i].offset;
+ uint32_t size = bank->sectors[i].size;
+
+ if ((retval = target_blank_check_memory(target, address, size, &blank)) != ERROR_OK)
+ {
+ fast_check = 0;
+ break;
+ }
+ if (blank == 0xFF)
+ bank->sectors[i].is_erased = 1;
+ else
+ bank->sectors[i].is_erased = 0;
+ fast_check = 1;
+ }
+
+ if (!fast_check)
+ {
+ LOG_USER("Running slow fallback erase check - add working memory");
+ return default_flash_mem_blank_check(bank);
+ }
+
+ return ERROR_OK;
+}
+
/* erase given flash region, selects proper bank according to target and address */
static int flash_iterate_address_range(struct target *target, uint32_t addr, uint32_t length,
int (*callback)(struct flash_bank *bank, int first, int last))
{
struct flash_bank *c;
+ uint32_t last_addr = addr + length; /* first address AFTER end */
int first = -1;
int last = -1;
int i;
return callback(c, 0, c->num_sectors - 1);
}
- /* check whether it fits */
+ /* check whether it all fits in this bank */
if (addr + length - 1 > c->base + c->size - 1)
return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
+ /** @todo: handle erasures that cross into adjacent banks */
+
addr -= c->base;
for (i = 0; i < c->num_sectors; i++)
{
- /* check whether sector overlaps with the given range and is not yet erased */
- if (addr < c->sectors[i].offset + c->sectors[i].size && addr + length > c->sectors[i].offset && c->sectors[i].is_erased != 1) {
- /* if first is not set yet then this is the first sector */
- if (first == -1)
+ struct flash_sector *f = c->sectors + i;
+
+ /* start only on a sector boundary */
+ if (first < 0) {
+ /* is this the first sector? */
+ if (addr == f->offset)
first = i;
- last = i; /* and it is the last one so far in any case */
+ else if (addr < f->offset)
+ break;
+ }
+
+ /* is this (also?) the last sector? */
+ if (last_addr == f->offset + f->size) {
+ last = i;
+ break;
}
+
+ /* MUST finish on a sector boundary */
+ if (last_addr <= f->offset)
+ break;
}
- if (first == -1 || last == -1)
- return ERROR_OK;
+ /* invalid start or end address? */
+ if (first == -1 || last == -1) {
+ LOG_ERROR("address range 0x%8.8x .. 0x%8.8x "
+ "is not sector-aligned",
+ (unsigned) c->base + addr,
+ (unsigned) last_addr - 1);
+ return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
+ }
+ /* The NOR driver may trim this range down, based on
+ * whether or not a given sector is already erased.
+ *
+ * REVISIT should *we* trim it... ?
+ */
return callback(c, first, last);
}
projects / openocd / blobdiff