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-rw-r--r--src/flash/nor/virtual.c244
1 files changed, 244 insertions, 0 deletions
diff --git a/src/flash/nor/virtual.c b/src/flash/nor/virtual.c
new file mode 100644
index 00000000..4908c0c8
--- /dev/null
+++ b/src/flash/nor/virtual.c
@@ -0,0 +1,244 @@
+/***************************************************************************
+ * Copyright (C) 2010 by Spencer Oliver *
+ * spen@spen-soft.co.uk *
+ * *
+ * 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 *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ * This program is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
+ * GNU General Public License for more details. *
+ * *
+ * You should have received a copy of the GNU General Public License *
+ * along with this program; if not, write to the *
+ * Free Software Foundation, Inc., *
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ ***************************************************************************/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "imp.h"
+
+static struct flash_bank* virtual_get_master_bank(struct flash_bank *bank)
+{
+ struct flash_bank* master_bank;
+
+ master_bank = get_flash_bank_by_name(bank->driver_priv);
+ if (master_bank == NULL) {
+ LOG_ERROR("master flash bank '%s' does not exist", (char*)bank->driver_priv);
+ }
+
+ return master_bank;
+}
+
+static void virtual_update_bank_info(struct flash_bank *bank)
+{
+ struct flash_bank *master_bank = virtual_get_master_bank(bank);
+
+ if (master_bank == NULL) {
+ return;
+ }
+
+ /* update the info we do not have */
+ bank->size = master_bank->size;
+ bank->chip_width = master_bank->chip_width;
+ bank->bus_width = master_bank->bus_width;
+ bank->num_sectors = master_bank->num_sectors;
+ bank->sectors = master_bank->sectors;
+}
+
+FLASH_BANK_COMMAND_HANDLER(virtual_flash_bank_command)
+{
+ if (CMD_ARGC < 7)
+ {
+ LOG_WARNING("incomplete flash_bank virtual configuration");
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ /* get the master flash bank */
+ const char *bank_name = CMD_ARGV[6];
+ struct flash_bank *master_bank = get_flash_bank_by_name(bank_name);
+
+ if (master_bank == NULL)
+ {
+ LOG_ERROR("master flash bank '%s' does not exist", bank_name);
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ /* save master bank name - use this to get settings later */
+ bank->driver_priv = strdup(bank_name);
+
+ return ERROR_OK;
+}
+
+static int virtual_protect(struct flash_bank *bank, int set, int first, int last)
+{
+ struct flash_bank *master_bank = virtual_get_master_bank(bank);
+ int retval;
+
+ if (master_bank == NULL) {
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ /* call master handler */
+ if ((retval = master_bank->driver->protect(master_bank, set,
+ first, last)) != ERROR_OK)
+ return retval;
+
+ return ERROR_OK;
+}
+
+static int virtual_protect_check(struct flash_bank *bank)
+{
+ struct flash_bank *master_bank = virtual_get_master_bank(bank);
+ int retval;
+
+ if (master_bank == NULL) {
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ /* call master handler */
+ if ((retval = master_bank->driver->protect_check(master_bank)) != ERROR_OK)
+ return retval;
+
+ return ERROR_OK;
+}
+
+static int virtual_erase(struct flash_bank *bank, int first, int last)
+{
+ struct flash_bank *master_bank = virtual_get_master_bank(bank);
+ int retval;
+
+ if (master_bank == NULL) {
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ /* call master handler */
+ if ((retval = master_bank->driver->erase(master_bank,
+ first, last)) != ERROR_OK)
+ return retval;
+
+ return ERROR_OK;
+}
+
+static int virtual_write(struct flash_bank *bank, uint8_t *buffer,
+ uint32_t offset, uint32_t count)
+{
+ struct flash_bank *master_bank = virtual_get_master_bank(bank);
+ int retval;
+
+ if (master_bank == NULL) {
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ /* call master handler */
+ if ((retval = master_bank->driver->write(master_bank, buffer,
+ offset, count)) != ERROR_OK)
+ return retval;
+
+ return ERROR_OK;
+}
+
+static int virtual_probe(struct flash_bank *bank)
+{
+ struct flash_bank *master_bank = virtual_get_master_bank(bank);
+ int retval;
+
+ if (master_bank == NULL) {
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ /* call master handler */
+ if ((retval = master_bank->driver->probe(master_bank)) != ERROR_OK)
+ return retval;
+
+ /* update the info we do not have */
+ virtual_update_bank_info(bank);
+
+ return ERROR_OK;
+}
+
+static int virtual_auto_probe(struct flash_bank *bank)
+{
+ struct flash_bank *master_bank = virtual_get_master_bank(bank);
+ int retval;
+
+ if (master_bank == NULL) {
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ /* call master handler */
+ if ((retval = master_bank->driver->auto_probe(master_bank)) != ERROR_OK)
+ return retval;
+
+ /* update the info we do not have */
+ virtual_update_bank_info(bank);
+
+ return ERROR_OK;
+}
+
+static int virtual_info(struct flash_bank *bank, char *buf, int buf_size)
+{
+ struct flash_bank *master_bank = virtual_get_master_bank(bank);
+
+ if (master_bank == NULL) {
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ snprintf(buf, buf_size, "%s driver for flash bank %s at 0x%8.8" PRIx32 "",
+ bank->driver->name, master_bank->name, master_bank->base);
+
+ return ERROR_OK;
+}
+
+int virtual_blank_check(struct flash_bank *bank)
+{
+ struct flash_bank *master_bank = virtual_get_master_bank(bank);
+ int retval;
+
+ if (master_bank == NULL) {
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ /* call master handler */
+ if ((retval = master_bank->driver->erase_check(master_bank)) != ERROR_OK)
+ return retval;
+
+ return ERROR_OK;
+}
+
+int virtual_flash_read(struct flash_bank *bank,
+ uint8_t *buffer, uint32_t offset, uint32_t count)
+{
+ struct flash_bank *master_bank = virtual_get_master_bank(bank);
+ int retval;
+
+ if (master_bank == NULL) {
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ /* call master handler */
+ if ((retval = master_bank->driver->read(master_bank, buffer,
+ offset, count)) != ERROR_OK)
+ return retval;
+
+ return ERROR_OK;
+}
+
+struct flash_driver virtual_flash = {
+ .name = "virtual",
+ .flash_bank_command = virtual_flash_bank_command,
+ .erase = virtual_erase,
+ .protect = virtual_protect,
+ .write = virtual_write,
+ .read = virtual_flash_read,
+ .probe = virtual_probe,
+ .auto_probe = virtual_auto_probe,
+ .erase_check = virtual_blank_check,
+ .protect_check = virtual_protect_check,
+ .info = virtual_info,
+};
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