summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--doc/openocd.texi27
-rw-r--r--src/flash/nor/Makefile.am2
-rw-r--r--src/flash/nor/drivers.c2
-rw-r--r--src/flash/nor/spearsmi.c713
-rw-r--r--src/flash/nor/spearsmi.h30
5 files changed, 774 insertions, 0 deletions
diff --git a/doc/openocd.texi b/doc/openocd.texi
index f946bdf6..0d24ddef 100644
--- a/doc/openocd.texi
+++ b/doc/openocd.texi
@@ -4252,6 +4252,33 @@ flash bank $_FLASHNAME cfi 0x00000000 0x02000000 2 4 $_TARGETNAME
@c "cfi part_id" disabled
@end deffn
+@deffn {Flash Driver} spearsmi
+@cindex SPEAr Serial Memory Interface
+@cindex SMI
+@cindex spearsmi
+All members of SPEAr MPU family from STMicroelectronics include a
+``Serial Memory Interface'' (SMI) controller able to drive external
+SPI flash devices.
+Depending on specific MPU and board configuration, up to 4 external
+flash devices can be connected.
+
+SMI makes the flash content directly accessible in the CPU address
+space; each external device is mapped in a memory bank.
+CPU can directly read data, execute code and boot from SMI banks.
+Normal OpenOCD commands like @command{mdw} can be used to display
+the flash content.
+
+The setup command only requires the @var{base} parameter in order
+to identify the memory bank.
+All other parameters are ignored. Additional information, like
+flash size, are detected automatically.
+
+@example
+flash bank $_FLASHNAME spearsmi 0xf8000000 0 0 0 $_TARGETNAME
+@end example
+
+@end deffn
+
@subsection Internal Flash (Microcontrollers)
@deffn {Flash Driver} aduc702x
diff --git a/src/flash/nor/Makefile.am b/src/flash/nor/Makefile.am
index eec6f504..511e899e 100644
--- a/src/flash/nor/Makefile.am
+++ b/src/flash/nor/Makefile.am
@@ -23,6 +23,7 @@ NOR_DRIVERS = \
non_cfi.c \
ocl.c \
pic32mx.c \
+ spearsmi.c \
stellaris.c \
stm32x.c \
str7x.c \
@@ -44,6 +45,7 @@ noinst_HEADERS = \
non_cfi.h \
ocl.h \
pic32mx.h \
+ spearsmi.h \
stellaris.h \
stm32x.h \
str7x.h \
diff --git a/src/flash/nor/drivers.c b/src/flash/nor/drivers.c
index 68f2f88a..f89e3f06 100644
--- a/src/flash/nor/drivers.c
+++ b/src/flash/nor/drivers.c
@@ -40,6 +40,7 @@ extern struct flash_driver pic32mx_flash;
extern struct flash_driver avr_flash;
extern struct flash_driver faux_flash;
extern struct flash_driver virtual_flash;
+extern struct flash_driver spearsmi_flash;
/**
* The list of built-in flash drivers.
@@ -65,6 +66,7 @@ static struct flash_driver *flash_drivers[] = {
&avr_flash,
&faux_flash,
&virtual_flash,
+ &spearsmi_flash,
NULL,
};
diff --git a/src/flash/nor/spearsmi.c b/src/flash/nor/spearsmi.c
new file mode 100644
index 00000000..19a44054
--- /dev/null
+++ b/src/flash/nor/spearsmi.c
@@ -0,0 +1,713 @@
+/***************************************************************************
+ * 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 *
+ * 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. *
+ ***************************************************************************/
+
+/* ATTENTION:
+ * To have flash memory mapped in CPU memory space, the SMI controller
+ * have to be in "HW mode". This requires following constraints:
+ * 1) The command "reset init" have to initialize SMI controller and put
+ * it in HW mode;
+ * 2) every command in this file have to return to prompt in HW mode. */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "imp.h"
+#include "spearsmi.h"
+#include <jtag/jtag.h>
+#include <helper/time_support.h>
+
+#define JTAG_ID_3XX_6XX (0x07926041)
+
+#define SMI_READ_REG(a) (_SMI_READ_REG(a))
+#define _SMI_READ_REG(a) \
+{ \
+ int __a; \
+ uint32_t __v; \
+ \
+ __a = target_read_u32(target, io_base + (a), &__v); \
+ if (__a != ERROR_OK) \
+ return __a; \
+ __v; \
+}
+
+#define SMI_WRITE_REG(a,v) \
+{ \
+ int __r; \
+ \
+ __r = target_write_u32(target, io_base + (a), (v)); \
+ if (__r != ERROR_OK) \
+ return __r; \
+}
+
+#define SMI_POLL_TFF(timeout) \
+{ \
+ int __r; \
+ \
+ __r = poll_tff(target, io_base, timeout); \
+ if (__r != ERROR_OK) \
+ return __r; \
+}
+
+#define SMI_SET_SW_MODE() SMI_WRITE_REG(SMI_CR1, \
+ SMI_READ_REG(SMI_CR1) | SMI_SW_MODE)
+#define SMI_SET_HWWB_MODE() SMI_WRITE_REG(SMI_CR1, \
+ (SMI_READ_REG(SMI_CR1) | SMI_WB_MODE) & ~SMI_SW_MODE)
+#define SMI_SET_HW_MODE() SMI_WRITE_REG(SMI_CR1, \
+ SMI_READ_REG(SMI_CR1) & ~(SMI_SW_MODE | SMI_WB_MODE))
+#define SMI_CLEAR_TFF() SMI_WRITE_REG(SMI_SR, ~SMI_TFF)
+
+#define SMI_BANK_SIZE (0x01000000)
+
+#define SMI_BASE_3XX_6XX (0xf8000000)
+#define SMI_CFGREG_3XX_6XX (0xfc000000)
+
+/* #define SMI_BASE_13XX (0xe6000000) */
+/* #define SMI_CFGREG_13XX (0xea000000) */
+
+#define SMI_CR1 (0x00) /* Control register 1 */
+#define SMI_CR2 (0x04) /* Control register 2 */
+#define SMI_SR (0x08) /* Status register */
+#define SMI_TR (0x0c) /* TX */
+#define SMI_RR (0x10) /* RX */
+
+/* fields in SMI_CR1 */
+#define SMI_SW_MODE 0x10000000 /* set to enable SW Mode */
+#define SMI_WB_MODE 0x20000000 /* Write Burst Mode */
+
+/* fields in SMI_CR2 */
+#define SMI_TX_LEN_1 0x00000001 /* data length = 1 byte */
+#define SMI_TX_LEN_4 0x00000004 /* data length = 4 byte */
+#define SMI_RX_LEN_3 0x00000030 /* data length = 3 byte */
+#define SMI_SEND 0x00000080 /* Send data */
+#define SMI_RSR 0x00000400 /* reads status reg */
+#define SMI_WE 0x00000800 /* Write Enable */
+#define SMI_SEL_BANK0 0x00000000 /* Select Bank0 */
+#define SMI_SEL_BANK1 0x00001000 /* Select Bank1 */
+#define SMI_SEL_BANK2 0x00002000 /* Select Bank2 */
+#define SMI_SEL_BANK3 0x00003000 /* Select Bank3 */
+
+/* fields in SMI_SR */
+#define SMI_WIP_BIT 0x00000001 /* WIP Bit of SPI SR on SMI SR */
+#define SMI_WEL_BIT 0x00000002 /* WEL Bit of SPI SR on SMI SR */
+#define SMI_TFF 0x00000100 /* Transfer Finished Flag */
+
+/* Commands */
+#define SMI_READ_ID 0x0000009F /* Read Flash Identification */
+
+/* Timeout in ms */
+#define SMI_CMD_TIMEOUT (100)
+#define SMI_PROBE_TIMEOUT (100)
+#define SMI_MAX_TIMEOUT (3000)
+
+/* data structure to maintain flash ids from different vendors */
+struct flash_device {
+ char *name;
+ uint8_t erase_cmd;
+ uint32_t device_id;
+ uint32_t pagesize;
+ unsigned long sectorsize;
+ unsigned long size_in_bytes;
+};
+
+#define FLASH_ID(n, es, id, psize, ssize, size) \
+{ \
+ .name = n, \
+ .erase_cmd = es, \
+ .device_id = id, \
+ .pagesize = psize, \
+ .sectorsize = ssize, \
+ .size_in_bytes = size \
+}
+
+static struct flash_device flash_devices[] = {
+ /* name, erase_cmd, device_id, pagesize, sectorsize, size_in_bytes */
+ FLASH_ID("st m25p05", 0xd8, 0x00102020, 0x80, 0x8000, 0x10000),
+ FLASH_ID("st m25p10", 0xd8, 0x00112020, 0x80, 0x8000, 0x20000),
+ FLASH_ID("st m25p20", 0xd8, 0x00122020, 0x100, 0x10000, 0x40000),
+ FLASH_ID("st m25p40", 0xd8, 0x00132020, 0x100, 0x10000, 0x80000),
+ FLASH_ID("st m25p80", 0xd8, 0x00142020, 0x100, 0x10000, 0x100000),
+ FLASH_ID("st m25p16", 0xd8, 0x00152020, 0x100, 0x10000, 0x200000),
+ FLASH_ID("st m25p32", 0xd8, 0x00162020, 0x100, 0x10000, 0x400000),
+ FLASH_ID("st m25p64", 0xd8, 0x00172020, 0x100, 0x10000, 0x800000),
+ FLASH_ID("st m25p128", 0xd8, 0x00182020, 0x100, 0x40000, 0x1000000),
+ FLASH_ID("st m45pe10", 0xd8, 0x00114020, 0x100, 0x10000, 0x20000),
+ FLASH_ID("st m45pe20", 0xd8, 0x00124020, 0x100, 0x10000, 0x40000),
+ FLASH_ID("st m45pe40", 0xd8, 0x00134020, 0x100, 0x10000, 0x80000),
+ FLASH_ID("st m45pe80", 0xd8, 0x00144020, 0x100, 0x10000, 0x100000),
+ FLASH_ID("sp s25fl004", 0xd8, 0x00120201, 0x100, 0x10000, 0x80000),
+ FLASH_ID("sp s25fl008", 0xd8, 0x00130201, 0x100, 0x10000, 0x100000),
+ FLASH_ID("sp s25fl016", 0xd8, 0x00140201, 0x100, 0x10000, 0x200000),
+ FLASH_ID("sp s25fl032", 0xd8, 0x00150201, 0x100, 0x10000, 0x400000),
+ FLASH_ID("sp s25fl064", 0xd8, 0x00160201, 0x100, 0x10000, 0x800000),
+ FLASH_ID("atmel 25f512", 0x52, 0x0065001f, 0x80, 0x8000, 0x10000),
+ FLASH_ID("atmel 25f1024", 0x52, 0x0060001f, 0x100, 0x8000, 0x20000),
+ FLASH_ID("atmel 25f2048", 0x52, 0x0063001f, 0x100, 0x10000, 0x40000),
+ FLASH_ID("atmel 25f4096", 0x52, 0x0064001f, 0x100, 0x10000, 0x80000),
+ FLASH_ID("atmel 25fs040", 0xd7, 0x0004661f, 0x100, 0x10000, 0x80000),
+ FLASH_ID("mac 25l512", 0xd8, 0x001020c2, 0x010, 0x10000, 0x10000),
+ FLASH_ID("mac 25l1005", 0xd8, 0x001120c2, 0x010, 0x10000, 0x20000),
+ FLASH_ID("mac 25l2005", 0xd8, 0x001220c2, 0x010, 0x10000, 0x40000),
+ FLASH_ID("mac 25l4005", 0xd8, 0x001320c2, 0x010, 0x10000, 0x80000),
+ FLASH_ID("mac 25l8005", 0xd8, 0x001420c2, 0x010, 0x10000, 0x100000),
+ FLASH_ID("mac 25l1605", 0xd8, 0x001520c2, 0x100, 0x10000, 0x200000),
+ FLASH_ID("mac 25l3205", 0xd8, 0x001620c2, 0x100, 0x10000, 0x400000),
+ FLASH_ID("mac 25l6405", 0xd8, 0x001720c2, 0x100, 0x10000, 0x800000),
+ FLASH_ID(NULL, 0, 0, 0, 0, 0)
+};
+
+FLASH_BANK_COMMAND_HANDLER(spearsmi_flash_bank_command)
+{
+ struct spearsmi_flash_bank *spearsmi_info;
+
+ LOG_DEBUG(__FUNCTION__);
+
+ if (CMD_ARGC < 6)
+ {
+ LOG_WARNING("incomplete flash_bank spearsmi configuration");
+ return ERROR_FLASH_BANK_INVALID;
+ }
+
+ spearsmi_info = malloc(sizeof(struct spearsmi_flash_bank));
+ if (spearsmi_info == NULL)
+ {
+ LOG_ERROR("not enough memory");
+ return ERROR_FAIL;
+ }
+
+ bank->driver_priv = spearsmi_info;
+ spearsmi_info->probed = 0;
+
+ return ERROR_OK;
+}
+
+/* Poll transmit finished flag */
+/* timeout in ms */
+static int poll_tff(struct target *target, uint32_t io_base, int timeout)
+{
+ long long endtime;
+
+ if (SMI_READ_REG(SMI_SR) & SMI_TFF)
+ return ERROR_OK;
+
+ endtime = timeval_ms() + timeout;
+ do {
+ alive_sleep(1);
+ if (SMI_READ_REG(SMI_SR) & SMI_TFF)
+ return ERROR_OK;
+ } while (timeval_ms() < endtime);
+
+ LOG_ERROR("Timeout while polling TFF");
+ return ERROR_FLASH_OPERATION_FAILED;
+}
+
+static int read_status_reg(struct flash_bank *bank, uint32_t *status)
+{
+ struct target *target = bank->target;
+ struct spearsmi_flash_bank *spearsmi_info = bank->driver_priv;
+ uint32_t io_base = spearsmi_info->io_base;
+
+ /* clear transmit finished flag */
+ SMI_CLEAR_TFF();
+
+ /* Read status */
+ SMI_WRITE_REG(SMI_CR2, spearsmi_info->bank_num | SMI_RSR);
+
+ /* Poll transmit finished flag */
+ SMI_POLL_TFF(SMI_CMD_TIMEOUT);
+
+ /* clear transmit finished flag */
+ SMI_CLEAR_TFF();
+
+ /* Check write enabled */
+ *status = SMI_READ_REG(SMI_SR) & 0x0000ffff;
+
+ /* clean-up SMI_CR2 */
+ SMI_WRITE_REG(SMI_CR2, 0); /* AB: Required ? */
+
+ return ERROR_OK;
+}
+
+/* check for WIP (write in progress) bit in status register */
+/* timeout in ms */
+static int wait_till_ready(struct flash_bank *bank, int timeout)
+{
+ uint32_t status;
+ int retval;
+ long long endtime;
+
+ endtime = timeval_ms() + timeout;
+ do {
+ /* read flash status register */
+ retval = read_status_reg(bank, &status);
+ if (retval != ERROR_OK)
+ return retval;
+
+ if ((status & SMI_WIP_BIT) == 0)
+ return ERROR_OK;
+ alive_sleep(1);
+ } while (timeval_ms() < endtime);
+
+ LOG_ERROR("timeout");
+ return ERROR_FAIL;
+}
+
+static int smi_write_enable(struct flash_bank *bank)
+{
+ struct target *target = bank->target;
+ struct spearsmi_flash_bank *spearsmi_info = bank->driver_priv;
+ uint32_t io_base = spearsmi_info->io_base;
+ uint32_t status;
+ int retval;
+
+ /* Enter in HW mode */
+ SMI_SET_HW_MODE(); /* AB: is this correct ?*/
+
+ /* clear transmit finished flag */
+ SMI_CLEAR_TFF();
+
+ /* Send write enable command */
+ SMI_WRITE_REG(SMI_CR2, spearsmi_info->bank_num | SMI_WE);
+
+ /* Poll transmit finished flag */
+ SMI_POLL_TFF(SMI_CMD_TIMEOUT);
+
+ /* read flash status register */
+ retval = read_status_reg(bank, &status);
+ if (retval != ERROR_OK)
+ return retval;
+
+ /* Check write enabled */
+ if ((status & SMI_WEL_BIT) == 0)
+ {
+ LOG_ERROR("Cannot enable write to flash. Status=0x%08" PRIx32, status);
+ return ERROR_FAIL;
+ }
+
+ return ERROR_OK;
+}
+
+static uint32_t erase_command(struct spearsmi_flash_bank *spearsmi_info,
+ uint32_t offset)
+{
+ union {
+ uint32_t command;
+ uint8_t x[4];
+ } cmd;
+
+ cmd.x[0] = spearsmi_info->dev->erase_cmd;
+ cmd.x[1] = offset >> 16;
+ cmd.x[2] = offset >> 8;
+ cmd.x[3] = offset;
+
+ return cmd.command;
+}
+
+static int smi_erase_sector(struct flash_bank *bank, int sector)
+{
+ struct target *target = bank->target;
+ struct spearsmi_flash_bank *spearsmi_info = bank->driver_priv;
+ uint32_t io_base = spearsmi_info->io_base;
+ uint32_t cmd;
+ int retval;
+
+ retval = smi_write_enable(bank);
+ if (retval != ERROR_OK)
+ return retval;
+
+ /* Switch to SW mode to send sector erase command */
+ SMI_SET_SW_MODE();
+
+ /* clear transmit finished flag */
+ SMI_CLEAR_TFF();
+
+ /* send erase command */
+ cmd = erase_command(spearsmi_info, bank->sectors[sector].offset);
+ SMI_WRITE_REG(SMI_TR, cmd);
+ SMI_WRITE_REG(SMI_CR2, spearsmi_info->bank_num | SMI_SEND | SMI_TX_LEN_4);
+
+ /* Poll transmit finished flag */
+ SMI_POLL_TFF(SMI_CMD_TIMEOUT);
+
+ /* poll WIP for end of self timed Sector Erase cycle */
+ retval = wait_till_ready(bank, SMI_MAX_TIMEOUT);
+ if (retval != ERROR_OK)
+ return retval;
+
+ return ERROR_OK;
+}
+
+static int spearsmi_erase(struct flash_bank *bank, int first, int last)
+{
+ struct target *target = bank->target;
+ struct spearsmi_flash_bank *spearsmi_info = bank->driver_priv;
+ uint32_t io_base = spearsmi_info->io_base;
+ int retval = ERROR_OK;
+ int sector;
+
+ LOG_DEBUG("%s: from sector %d to sector %d", __FUNCTION__, first, last);
+
+ if (target->state != TARGET_HALTED)
+ {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ if ((first < 0) || (last < first) || (last >= bank->num_sectors))
+ {
+ LOG_ERROR("Flash sector invalid");
+ return ERROR_FLASH_SECTOR_INVALID;
+ }
+
+ if (!(spearsmi_info->probed))
+ {
+ LOG_ERROR("Flash bank not probed");
+ return ERROR_FLASH_BANK_NOT_PROBED;
+ }
+
+ for (sector = first; sector <= last; sector++)
+ {
+ if (bank->sectors[sector].is_protected)
+ {
+ LOG_ERROR("Flash sector %d protected", sector);
+ return ERROR_FAIL;
+ }
+ }
+
+ for (sector = first; sector <= last; sector++)
+ {
+ retval = smi_erase_sector(bank, sector);
+ if (retval != ERROR_OK)
+ break;
+ keep_alive();
+ }
+
+ /* Switch to HW mode before return to prompt */
+ SMI_SET_HW_MODE();
+ return retval;
+}
+
+static int spearsmi_protect(struct flash_bank *bank, int set,
+ int first, int last)
+{
+ int sector;
+
+ for (sector = first; sector <= last; sector++)
+ bank->sectors[sector].is_protected = set;
+ return ERROR_OK;
+}
+
+static int smi_write_buffer(struct flash_bank *bank, uint8_t *buffer,
+ uint32_t address, uint32_t len)
+{
+ struct target *target = bank->target;
+ struct spearsmi_flash_bank *spearsmi_info = bank->driver_priv;
+ uint32_t io_base = spearsmi_info->io_base;
+ int retval;
+
+ LOG_DEBUG("%s: address=0x%08" PRIx32 " len=0x%08" PRIx32,
+ __FUNCTION__, address, len);
+
+ retval = smi_write_enable(bank);
+ if (retval != ERROR_OK)
+ return retval;
+
+ /* HW mode, write burst mode */
+ SMI_SET_HWWB_MODE();
+
+ retval = target_write_buffer(target, address, len, buffer);
+ if (retval != ERROR_OK)
+ return retval;
+
+ return ERROR_OK;
+}
+
+static int spearsmi_write(struct flash_bank *bank, uint8_t *buffer,
+ uint32_t offset, uint32_t count)
+{
+ struct target *target = bank->target;
+ struct spearsmi_flash_bank *spearsmi_info = bank->driver_priv;
+ uint32_t io_base = spearsmi_info->io_base;
+ uint32_t cur_count, page_size, page_offset;
+ int sector;
+ int retval = ERROR_OK;
+
+ LOG_DEBUG("%s: offset=0x%08" PRIx32 " count=0x%08" PRIx32,
+ __FUNCTION__, offset, count);
+
+ if (target->state != TARGET_HALTED)
+ {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ if (offset + count > spearsmi_info->dev->size_in_bytes)
+ {
+ LOG_WARNING("Write pasts end of flash. Extra data discarded.");
+ count = spearsmi_info->dev->size_in_bytes - offset;
+ }
+
+ /* Check sector protection */
+ for (sector = 0; sector < bank->num_sectors; sector++)
+ {
+ /* Start offset in or before this sector? */
+ /* End offset in or behind this sector? */
+ if ( (offset <
+ (bank->sectors[sector].offset + bank->sectors[sector].size))
+ && ((offset + count - 1) >= bank->sectors[sector].offset)
+ && bank->sectors[sector].is_protected )
+ {
+ LOG_ERROR("Flash sector %d protected", sector);
+ return ERROR_FAIL;
+ }
+ }
+
+ page_size = spearsmi_info->dev->pagesize;
+
+ /* unaligned buffer head */
+ if (count > 0 && (offset & 3) != 0)
+ {
+ cur_count = 4 - (offset & 3);
+ if (cur_count > count)
+ cur_count = count;
+ retval = smi_write_buffer(bank, buffer, bank->base + offset,
+ cur_count);
+ if (retval != ERROR_OK)
+ goto err;
+ offset += cur_count;
+ buffer += cur_count;
+ count -= cur_count;
+ }
+
+ page_offset = offset % page_size;
+ /* central part, aligned words */
+ while (count >= 4)
+ {
+ /* clip block at page boundary */
+ if (page_offset + count > page_size)
+ cur_count = page_size - page_offset;
+ else
+ cur_count = count & ~3;
+
+ retval = smi_write_buffer(bank, buffer, bank->base + offset,
+ cur_count);
+ if (retval != ERROR_OK)
+ goto err;
+
+ page_offset = 0;
+ buffer += cur_count;
+ offset += cur_count;
+ count -= cur_count;
+
+ keep_alive();
+ }
+
+ /* buffer tail */
+ if (count > 0)
+ retval = smi_write_buffer(bank, buffer, bank->base + offset, count);
+
+err:
+ /* Switch to HW mode before return to prompt */
+ SMI_SET_HW_MODE();
+ return retval;
+}
+
+/* Return ID of flash device */
+/* On exit, SW mode is kept */
+static int read_flash_id(struct flash_bank *bank, uint32_t *id)
+{
+ struct target *target = bank->target;
+ struct spearsmi_flash_bank *spearsmi_info = bank->driver_priv;
+ uint32_t io_base = spearsmi_info->io_base;
+ int retval;
+
+ if (target->state != TARGET_HALTED)
+ {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ /* poll WIP */
+ retval = wait_till_ready(bank, SMI_PROBE_TIMEOUT);
+ if (retval != ERROR_OK)
+ return retval;
+
+ /* enter in SW mode */
+ SMI_SET_SW_MODE();
+
+ /* clear transmit finished flag */
+ SMI_CLEAR_TFF();
+
+ /* Require read flash ID */
+ SMI_WRITE_REG(SMI_TR, SMI_READ_ID);
+ SMI_WRITE_REG(SMI_CR2,
+ spearsmi_info->bank_num | SMI_SEND | SMI_RX_LEN_3 | SMI_TX_LEN_1);
+
+ /* Poll transmit finished flag */
+ SMI_POLL_TFF(SMI_CMD_TIMEOUT);
+
+ /* clear transmit finished flag */
+ SMI_CLEAR_TFF();
+
+ /* read ID */
+ *id = SMI_READ_REG(SMI_RR) & 0x00ffffff;
+ return ERROR_OK;
+}
+
+static int spearsmi_probe(struct flash_bank *bank)
+{
+ struct target *target = bank->target;
+ struct spearsmi_flash_bank *spearsmi_info = bank->driver_priv;
+ uint32_t io_base;
+ struct flash_sector *sectors;
+ uint32_t id = 0; /* silence uninitialized warning */
+ int retval;
+
+ if (spearsmi_info->probed)
+ free(bank->sectors);
+ spearsmi_info->probed = 0;
+
+ /* check for SPEAr device */
+ switch (target->tap->idcode)
+ {
+ case JTAG_ID_3XX_6XX:
+ /* SPEAr3xx/6xx */
+ spearsmi_info->io_base = SMI_CFGREG_3XX_6XX;
+ switch (bank->base)
+ {
+ case SMI_BASE_3XX_6XX:
+ spearsmi_info->bank_num = SMI_SEL_BANK0;
+ break;
+ case SMI_BASE_3XX_6XX + SMI_BANK_SIZE:
+ spearsmi_info->bank_num = SMI_SEL_BANK1;
+ break;
+ case SMI_BASE_3XX_6XX + 2*SMI_BANK_SIZE:
+ spearsmi_info->bank_num = SMI_SEL_BANK2;
+ break;
+ case SMI_BASE_3XX_6XX + 3*SMI_BANK_SIZE:
+ spearsmi_info->bank_num = SMI_SEL_BANK3;
+ break;
+ default:
+ LOG_ERROR("Invalid base address 0x%" PRIx32, bank->base);
+ return ERROR_FAIL;
+ }
+ break;
+
+ default:
+ LOG_ERROR("0x%" PRIx32 " is invalid id for SPEAr device",
+ target->tap->idcode);
+ return ERROR_FAIL;
+ }
+ io_base = spearsmi_info->io_base;
+
+ /* read and decode flash ID; returns in SW mode */
+ retval = read_flash_id(bank, &id);
+ SMI_SET_HW_MODE();
+ if (retval != ERROR_OK)
+ return retval;
+
+ for (struct flash_device *p = flash_devices; p->name ; p++)
+ if (p->device_id == id) {
+ spearsmi_info->dev = p;
+ break;
+ }
+
+ if (!spearsmi_info->dev)
+ {
+ LOG_ERROR("Unknown flash device (ID 0x%08" PRIx32 ")", id);
+ return ERROR_FAIL;
+ }
+
+ LOG_INFO("Found flash device \'%s\' (ID 0x%08" PRIx32 ")",
+ spearsmi_info->dev->name, spearsmi_info->dev->device_id);
+
+ /* Set correct size value */
+ bank->size = spearsmi_info->dev->size_in_bytes;
+
+ /* create and fill sectors array */
+ bank->num_sectors =
+ spearsmi_info->dev->size_in_bytes / spearsmi_info->dev->sectorsize;
+ sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
+ if (sectors == NULL)
+ {
+ LOG_ERROR("not enough memory");
+ return ERROR_FAIL;
+ }
+
+ for (int sector = 0; sector < bank->num_sectors; sector++)
+ {
+ sectors[sector].offset = sector * spearsmi_info->dev->sectorsize;
+ sectors[sector].size = spearsmi_info->dev->sectorsize;
+ sectors[sector].is_erased = -1;
+ sectors[sector].is_protected = 1;
+ }
+
+ bank->sectors = sectors;
+ spearsmi_info->probed = 1;
+ return ERROR_OK;
+}
+
+static int spearsmi_auto_probe(struct flash_bank *bank)
+{
+ struct spearsmi_flash_bank *spearsmi_info = bank->driver_priv;
+ if (spearsmi_info->probed)
+ return ERROR_OK;
+ return spearsmi_probe(bank);
+}
+
+static int spearsmi_protect_check(struct flash_bank *bank)
+{
+ /* Nothing to do. Protection is only handled in SW. */
+ return ERROR_OK;
+}
+
+static int get_spearsmi_info(struct flash_bank *bank, char *buf, int buf_size)
+{
+ struct spearsmi_flash_bank *spearsmi_info = bank->driver_priv;
+ int printed;
+
+ if (!(spearsmi_info->probed))
+ {
+ printed = snprintf(buf, buf_size,
+ "\nSPEAr SMI flash bank not probed yet\n");
+ return ERROR_OK;
+ }
+
+ printed = snprintf(buf, buf_size, "\nSPEAr SMI flash information:\n"
+ " Device \'%s\' (ID 0x%08x)\n",
+ spearsmi_info->dev->name, spearsmi_info->dev->device_id);
+ buf += printed;
+ buf_size -= printed;
+
+ return ERROR_OK;
+}
+
+struct flash_driver spearsmi_flash = {
+ .name = "spearsmi",
+ .flash_bank_command = spearsmi_flash_bank_command,
+ .erase = spearsmi_erase,
+ .protect = spearsmi_protect,
+ .write = spearsmi_write,
+ .read = default_flash_read,
+ .probe = spearsmi_probe,
+ .auto_probe = spearsmi_auto_probe,
+ .erase_check = default_flash_blank_check,
+ .protect_check = spearsmi_protect_check,
+ .info = get_spearsmi_info,
+};
diff --git a/src/flash/nor/spearsmi.h b/src/flash/nor/spearsmi.h
new file mode 100644
index 00000000..03fabe3a
--- /dev/null
+++ b/src/flash/nor/spearsmi.h
@@ -0,0 +1,30 @@
+/***************************************************************************
+ * 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 *
+ * 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. *
+ ***************************************************************************/
+#ifndef SPEARSMI_H
+#define SPEARSMI_H
+
+struct spearsmi_flash_bank
+{
+ int probed;
+ uint32_t io_base;
+ uint32_t bank_num;
+ struct flash_device *dev;
+};
+
+#endif /* SPEARSMI_H */
generated by cgit v1.2.3 (git 2.46.0) at 2024-12-22 21:08:48 +0000