-/* src/flash/s3c2440_nand.c\r
- *\r
- * S3C2440 OpenOCD NAND Flash controller support.\r
- *\r
- * Copyright 2007,2008 Ben Dooks <ben@fluff.org>\r
- *\r
- * This program is free software; you can redistribute it and/or modify\r
- * it under the terms of the GNU General Public License as published by\r
- * the Free Software Foundation; either version 2 of the License, or\r
- * (at your option) any later version.\r
- *\r
- * Many thanks to Simtec Electronics for sponsoring this work.\r
- */\r
-\r
-#ifdef HAVE_CONFIG_H\r
-#include "config.h"\r
-#endif\r
-\r
-#include "replacements.h"\r
-#include "log.h"\r
-\r
-#include <stdlib.h>\r
-#include <string.h>\r
-\r
-#include "nand.h"\r
-#include "s3c24xx_nand.h"\r
-#include "target.h"\r
-\r
-int s3c2440_nand_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct nand_device_s *device);\r
-int s3c2440_init(struct nand_device_s *device);\r
-int s3c2440_nand_ready(struct nand_device_s *device, int timeout);\r
-\r
-nand_flash_controller_t s3c2440_nand_controller =\r
-{\r
- .name = "s3c2440",\r
- .nand_device_command = s3c2440_nand_device_command,\r
- .register_commands = s3c24xx_register_commands,\r
- .init = s3c2440_init,\r
- .reset = s3c24xx_reset,\r
- .command = s3c24xx_command,\r
- .address = s3c24xx_address,\r
- .write_data = s3c24xx_write_data,\r
- .read_data = s3c24xx_read_data,\r
- .write_page = s3c24xx_write_page,\r
- .read_page = s3c24xx_read_page,\r
- .write_block_data = s3c2440_write_block_data,\r
- .read_block_data = s3c2440_read_block_data,\r
- .controller_ready = s3c24xx_controller_ready,\r
- .nand_ready = s3c2440_nand_ready,\r
-};\r
-\r
-int s3c2440_nand_device_command(struct command_context_s *cmd_ctx, char *cmd,\r
- char **args, int argc,\r
- struct nand_device_s *device)\r
-{\r
- s3c24xx_nand_controller_t *info;\r
- \r
- info = s3c24xx_nand_device_command(cmd_ctx, cmd, args, argc, device);\r
- if (info == NULL) {\r
- return ERROR_NAND_DEVICE_INVALID;\r
- }\r
-\r
- /* fill in the address fields for the core device */\r
- info->cmd = S3C2440_NFCMD;\r
- info->addr = S3C2440_NFADDR;\r
- info->data = S3C2440_NFDATA;\r
- info->nfstat = S3C2440_NFSTAT;\r
- \r
- return ERROR_OK;\r
-}\r
-\r
-int s3c2440_init(struct nand_device_s *device)\r
-{\r
- s3c24xx_nand_controller_t *s3c24xx_info = device->controller_priv;\r
- target_t *target = s3c24xx_info->target;\r
- u32 version;\r
-\r
- target_write_u32(target, S3C2410_NFCONF,\r
- S3C2440_NFCONF_TACLS(3) |\r
- S3C2440_NFCONF_TWRPH0(7) |\r
- S3C2440_NFCONF_TWRPH1(7));\r
-\r
- target_write_u32(target, S3C2440_NFCONT,\r
- S3C2440_NFCONT_INITECC | S3C2440_NFCONT_ENABLE);\r
-\r
- return ERROR_OK;\r
-}\r
-\r
-int s3c2440_nand_ready(struct nand_device_s *device, int timeout)\r
-{\r
- s3c24xx_nand_controller_t *s3c24xx_info = device->controller_priv;\r
- target_t *target = s3c24xx_info->target;\r
- u8 status;\r
-\r
- if (target->state != TARGET_HALTED) {\r
- ERROR("target must be halted to use S3C24XX NAND flash controller");\r
- return ERROR_NAND_OPERATION_FAILED;\r
- }\r
- \r
- do { \r
- target_read_u8(target, s3c24xx_info->nfstat, &status);\r
- \r
- if (status & S3C2440_NFSTAT_READY)\r
- return 1;\r
-\r
- usleep(1000);\r
- } while (timeout-- > 0);\r
-\r
-\r
- return 0;\r
-}\r
-\r
-/* use the fact we can read/write 4 bytes in one go via a single 32bit op */\r
-\r
-int s3c2440_read_block_data(struct nand_device_s *device, u8 *data, int data_size)\r
-{\r
- s3c24xx_nand_controller_t *s3c24xx_info = device->controller_priv;\r
- target_t *target = s3c24xx_info->target;\r
- u32 nfdata = s3c24xx_info->data;\r
- u32 tmp;\r
-\r
- INFO("%s: reading data: %p, %p, %d\n", __func__, device, data, data_size);\r
-\r
- if (target->state != TARGET_HALTED) {\r
- ERROR("target must be halted to use S3C24XX NAND flash controller");\r
- return ERROR_NAND_OPERATION_FAILED;\r
- }\r
-\r
- while (data_size >= 4) { \r
- target_read_u32(target, nfdata, &tmp);\r
-\r
- data[0] = tmp;\r
- data[1] = tmp >> 8;\r
- data[2] = tmp >> 16;\r
- data[3] = tmp >> 24;\r
-\r
- data_size -= 4;\r
- data += 4;\r
- }\r
-\r
- while (data_size > 0) {\r
- target_read_u8(target, nfdata, data);\r
-\r
- data_size -= 1;\r
- data += 1;\r
- }\r
-\r
- return ERROR_OK;\r
-}\r
-\r
-int s3c2440_write_block_data(struct nand_device_s *device, u8 *data, int data_size)\r
-{\r
- s3c24xx_nand_controller_t *s3c24xx_info = device->controller_priv;\r
- target_t *target = s3c24xx_info->target;\r
- u32 nfdata = s3c24xx_info->data;\r
- u32 tmp;\r
-\r
- if (target->state != TARGET_HALTED) {\r
- ERROR("target must be halted to use S3C24XX NAND flash controller");\r
- return ERROR_NAND_OPERATION_FAILED;\r
- }\r
-\r
- while (data_size >= 4) { \r
- tmp = le_to_h_u32(data);\r
- target_write_u32(target, nfdata, tmp);\r
-\r
- data_size -= 4;\r
- data += 4;\r
- }\r
-\r
- while (data_size > 0) {\r
- target_write_u8(target, nfdata, *data);\r
-\r
- data_size -= 1;\r
- data += 1;\r
- }\r
-\r
- return ERROR_OK;\r
-}\r
+/* src/flash/s3c2440_nand.c
+ *
+ * S3C2440 OpenOCD NAND Flash controller support.
+ *
+ * Copyright 2007,2008 Ben Dooks <ben@fluff.org>
+ *
+ * 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.
+ *
+ * Many thanks to Simtec Electronics for sponsoring this work.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "replacements.h"
+#include "log.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "nand.h"
+#include "s3c24xx_nand.h"
+#include "target.h"
+
+int s3c2440_nand_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct nand_device_s *device);
+int s3c2440_init(struct nand_device_s *device);
+int s3c2440_nand_ready(struct nand_device_s *device, int timeout);
+
+nand_flash_controller_t s3c2440_nand_controller =
+{
+ .name = "s3c2440",
+ .nand_device_command = s3c2440_nand_device_command,
+ .register_commands = s3c24xx_register_commands,
+ .init = s3c2440_init,
+ .reset = s3c24xx_reset,
+ .command = s3c24xx_command,
+ .address = s3c24xx_address,
+ .write_data = s3c24xx_write_data,
+ .read_data = s3c24xx_read_data,
+ .write_page = s3c24xx_write_page,
+ .read_page = s3c24xx_read_page,
+ .write_block_data = s3c2440_write_block_data,
+ .read_block_data = s3c2440_read_block_data,
+ .controller_ready = s3c24xx_controller_ready,
+ .nand_ready = s3c2440_nand_ready,
+};
+
+int s3c2440_nand_device_command(struct command_context_s *cmd_ctx, char *cmd,
+ char **args, int argc,
+ struct nand_device_s *device)
+{
+ s3c24xx_nand_controller_t *info;
+
+ info = s3c24xx_nand_device_command(cmd_ctx, cmd, args, argc, device);
+ if (info == NULL) {
+ return ERROR_NAND_DEVICE_INVALID;
+ }
+
+ /* fill in the address fields for the core device */
+ info->cmd = S3C2440_NFCMD;
+ info->addr = S3C2440_NFADDR;
+ info->data = S3C2440_NFDATA;
+ info->nfstat = S3C2440_NFSTAT;
+
+ return ERROR_OK;
+}
+
+int s3c2440_init(struct nand_device_s *device)
+{
+ s3c24xx_nand_controller_t *s3c24xx_info = device->controller_priv;
+ target_t *target = s3c24xx_info->target;
+ u32 version;
+
+ target_write_u32(target, S3C2410_NFCONF,
+ S3C2440_NFCONF_TACLS(3) |
+ S3C2440_NFCONF_TWRPH0(7) |
+ S3C2440_NFCONF_TWRPH1(7));
+
+ target_write_u32(target, S3C2440_NFCONT,
+ S3C2440_NFCONT_INITECC | S3C2440_NFCONT_ENABLE);
+
+ return ERROR_OK;
+}
+
+int s3c2440_nand_ready(struct nand_device_s *device, int timeout)
+{
+ s3c24xx_nand_controller_t *s3c24xx_info = device->controller_priv;
+ target_t *target = s3c24xx_info->target;
+ u8 status;
+
+ if (target->state != TARGET_HALTED) {
+ ERROR("target must be halted to use S3C24XX NAND flash controller");
+ return ERROR_NAND_OPERATION_FAILED;
+ }
+
+ do {
+ target_read_u8(target, s3c24xx_info->nfstat, &status);
+
+ if (status & S3C2440_NFSTAT_READY)
+ return 1;
+
+ usleep(1000);
+ } while (timeout-- > 0);
+
+
+ return 0;
+}
+
+/* use the fact we can read/write 4 bytes in one go via a single 32bit op */
+
+int s3c2440_read_block_data(struct nand_device_s *device, u8 *data, int data_size)
+{
+ s3c24xx_nand_controller_t *s3c24xx_info = device->controller_priv;
+ target_t *target = s3c24xx_info->target;
+ u32 nfdata = s3c24xx_info->data;
+ u32 tmp;
+
+ INFO("%s: reading data: %p, %p, %d\n", __func__, device, data, data_size);
+
+ if (target->state != TARGET_HALTED) {
+ ERROR("target must be halted to use S3C24XX NAND flash controller");
+ return ERROR_NAND_OPERATION_FAILED;
+ }
+
+ while (data_size >= 4) {
+ target_read_u32(target, nfdata, &tmp);
+
+ data[0] = tmp;
+ data[1] = tmp >> 8;
+ data[2] = tmp >> 16;
+ data[3] = tmp >> 24;
+
+ data_size -= 4;
+ data += 4;
+ }
+
+ while (data_size > 0) {
+ target_read_u8(target, nfdata, data);
+
+ data_size -= 1;
+ data += 1;
+ }
+
+ return ERROR_OK;
+}
+
+int s3c2440_write_block_data(struct nand_device_s *device, u8 *data, int data_size)
+{
+ s3c24xx_nand_controller_t *s3c24xx_info = device->controller_priv;
+ target_t *target = s3c24xx_info->target;
+ u32 nfdata = s3c24xx_info->data;
+ u32 tmp;
+
+ if (target->state != TARGET_HALTED) {
+ ERROR("target must be halted to use S3C24XX NAND flash controller");
+ return ERROR_NAND_OPERATION_FAILED;
+ }
+
+ while (data_size >= 4) {
+ tmp = le_to_h_u32(data);
+ target_write_u32(target, nfdata, tmp);
+
+ data_size -= 4;
+ data += 4;
+ }
+
+ while (data_size > 0) {
+ target_write_u8(target, nfdata, *data);
+
+ data_size -= 1;
+ data += 1;
+ }
+
+ return ERROR_OK;
+}
projects / fw / openocd / blobdiff