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-rw-r--r--contrib/loaders/flash/stm32f2xxx.S63
-rw-r--r--src/flash/nor/Makefile.am1
-rw-r--r--src/flash/nor/drivers.c2
-rw-r--r--src/flash/nor/stm32f2xxx.c712
4 files changed, 778 insertions, 0 deletions
diff --git a/contrib/loaders/flash/stm32f2xxx.S b/contrib/loaders/flash/stm32f2xxx.S
new file mode 100644
index 00000000..49c821b6
--- /dev/null
+++ b/contrib/loaders/flash/stm32f2xxx.S
@@ -0,0 +1,63 @@
+/***************************************************************************
+ * Copyright (C) 2010 by Spencer Oliver *
+ * spen@spen-soft.co.uk *
+ * *
+ * Copyright (C) 2011 Øyvind Harboe *
+ * oyvind.harboe@zylin.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. *
+ ***************************************************************************/
+
+
+// Build : arm-eabi-gcc -c stm32f2xxx.S
+ .text
+ .syntax unified
+ .cpu cortex-m3
+ .thumb
+ .thumb_func
+ .global write
+
+/*
+ r0 - source address
+ r1 - target address
+ r2 - count (halfword-16bit)
+ r3 - result out
+ r4 - flash base
+*/
+
+#define STM32_FLASH_CR_OFFSET 0x10 /* offset of CR register in FLASH struct */
+#define STM32_FLASH_SR_OFFSET 0x0c /* offset of CR register in FLASH struct */
+
+write:
+
+write_half_word:
+ ldr r3, STM32_PROG16
+ str r3, [r4, #STM32_FLASH_CR_OFFSET]
+ ldrh r3, [r0], #0x02 /* read one half-word from src, increment ptr */
+ strh r3, [r1], #0x02 /* write one half-word from src, increment ptr */
+busy:
+ ldr r3, [r4, #STM32_FLASH_SR_OFFSET]
+ tst r3, #0x10000 /* BSY (bit0) == 1 => operation in progress */
+ beq busy /* wait more... */
+ tst r3, #0xf0 /* PGSERR | PGPERR | PGAERR | WRPERR */
+ bne exit /* fail... */
+ subs r2, r2, #0x01 /* decrement counter */
+ bne write_half_word /* write next half-word if anything left */
+exit:
+ bkpt #0x00
+
+
+STM32_PROG16: .word 0x101 /* PG | PSIZE_16*/
diff --git a/src/flash/nor/Makefile.am b/src/flash/nor/Makefile.am
index 42707e00..95bd313d 100644
--- a/src/flash/nor/Makefile.am
+++ b/src/flash/nor/Makefile.am
@@ -25,6 +25,7 @@ NOR_DRIVERS = \
stmsmi.c \
stellaris.c \
stm32x.c \
+ stm32f2xxx.c \
str7x.c \
str9x.c \
str9xpec.c \
diff --git a/src/flash/nor/drivers.c b/src/flash/nor/drivers.c
index f4479f6c..5489419f 100644
--- a/src/flash/nor/drivers.c
+++ b/src/flash/nor/drivers.c
@@ -33,6 +33,7 @@ extern struct flash_driver aduc702x_flash;
extern struct flash_driver stellaris_flash;
extern struct flash_driver str9xpec_flash;
extern struct flash_driver stm32x_flash;
+extern struct flash_driver stm32xf2xxx_flash;
extern struct flash_driver tms470_flash;
extern struct flash_driver ecosflash_flash;
extern struct flash_driver ocl_flash;
@@ -60,6 +61,7 @@ static struct flash_driver *flash_drivers[] = {
&stellaris_flash,
&str9xpec_flash,
&stm32x_flash,
+ &stm32xf2xxx_flash,
&tms470_flash,
&ecosflash_flash,
&ocl_flash,
diff --git a/src/flash/nor/stm32f2xxx.c b/src/flash/nor/stm32f2xxx.c
new file mode 100644
index 00000000..2ccf5317
--- /dev/null
+++ b/src/flash/nor/stm32f2xxx.c
@@ -0,0 +1,712 @@
+/***************************************************************************
+ * Copyright (C) 2005 by Dominic Rath *
+ * Dominic.Rath@gmx.de *
+ * *
+ * Copyright (C) 2008 by Spencer Oliver *
+ * spen@spen-soft.co.uk *
+ * *
+ * Copyright (C) 2011 Øyvind Harboe *
+ * oyvind.harboe@zylin.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. *
+ ***************************************************************************/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "imp.h"
+#include <helper/binarybuffer.h>
+#include <target/algorithm.h>
+#include <target/armv7m.h>
+
+/* Regarding performance:
+ *
+ * Short story - it might be best to leave the performance at
+ * current levels.
+ *
+ * You may see a jump in speed if you change to using
+ * 32bit words for the block programming.
+ *
+ * Its a shame you cannot use the double word as its
+ * even faster - but you require external VPP for that mode.
+ *
+ * Having said all that 16bit writes give us the widest vdd
+ * operating range, so may be worth adding a note to that effect.
+ *
+ */
+
+
+/* Danger!!!! The STM32F1xxxx and STM32F2xxxx series actually have
+ * quite different flash controllers.
+ *
+ * What's more scary is that the names of the registers and their
+ * addresses are the same, but the actual bits and what they do are
+ * can be very different.
+ *
+ * To reduce testing complexity and dangers of regressions,
+ * a seperate file is used for stm32fx2222.
+ *
+ * 1mByte part with 4 x 16, 1 x 64, 7 x 128kBytes sectors
+ *
+ * What's the protection page size???
+ *
+ * Tested with STM3220F-EVAL board.
+ *
+ * STM32F21xx series for reference.
+ *
+ * RM0033
+ * http://www.st.com/internet/mcu/product/250192.jsp
+ *
+ * PM0059
+ * www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/PROGRAMMING_MANUAL/CD00233952.pdf
+ *
+ * STM32F1xxx series - notice that this code was copy, pasted and knocked
+ * into a stm32f2xxx driver, so in case something has been converted or
+ * bugs haven't been fixed, here are the original manuals:
+ *
+ * RM0008 - Reference manual
+ *
+ * RM0042, the Flash programming manual for low-, medium- high-density and
+ * connectivity line STM32F10xxx devices
+ *
+ * PM0068, the Flash programming manual for XL-density STM32F10xxx devices.
+ *
+ */
+
+ // Erase time can be as high as 1000ms, 10x this and it's toast...
+#define FLASH_ERASE_TIMEOUT 10000
+#define FLASH_WRITE_TIMEOUT 5
+
+
+#define STM32_FLASH_BASE 0x40023c00
+#define STM32_FLASH_ACR 0x40023c00
+#define STM32_FLASH_KEYR 0x40023c04
+#define STM32_FLASH_OPTKEYR 0x40023c08
+#define STM32_FLASH_SR 0x40023c0C
+#define STM32_FLASH_CR 0x40023c10
+#define STM32_FLASH_OPTCR 0x40023c14
+#define STM32_FLASH_OBR 0x40023c1C
+
+
+
+/* option byte location */
+
+#define STM32_OB_RDP 0x1FFFF800
+#define STM32_OB_USER 0x1FFFF802
+#define STM32_OB_DATA0 0x1FFFF804
+#define STM32_OB_DATA1 0x1FFFF806
+#define STM32_OB_WRP0 0x1FFFF808
+#define STM32_OB_WRP1 0x1FFFF80A
+#define STM32_OB_WRP2 0x1FFFF80C
+#define STM32_OB_WRP3 0x1FFFF80E
+
+/* FLASH_CR register bits */
+
+#define FLASH_PG (1 << 0)
+#define FLASH_SER (1 << 1)
+#define FLASH_MER (1 << 2)
+#define FLASH_STRT (1 << 16)
+#define FLASH_PSIZE_8 (0 << 8)
+#define FLASH_PSIZE_16 (1 << 8)
+#define FLASH_PSIZE_32 (2 << 8)
+#define FLASH_PSIZE_64 (3 << 8)
+#define FLASH_SNB(a) ((a) << 3)
+#define FLASH_LOCK (1 << 31)
+
+/* FLASH_SR register bits */
+
+#define FLASH_BSY (1 << 16)
+#define FLASH_PGSERR (1 << 7) // Programming sequence error
+#define FLASH_PGPERR (1 << 6) // Programming parallelism error
+#define FLASH_PGAERR (1 << 5) // Programming alignment error
+#define FLASH_WRPERR (1 << 4) // Write protection error
+#define FLASH_OPERR (1 << 1) // Operation error
+
+#define FLASH_ERROR (FLASH_PGSERR | FLASH_PGPERR | FLASH_PGAERR| FLASH_WRPERR| FLASH_OPERR)
+
+/* STM32_FLASH_OBR bit definitions (reading) */
+
+#define OPT_ERROR 0
+#define OPT_READOUT 1
+#define OPT_RDWDGSW 2
+#define OPT_RDRSTSTOP 3
+#define OPT_RDRSTSTDBY 4
+#define OPT_BFB2 5 /* dual flash bank only */
+
+/* register unlock keys */
+
+#define KEY1 0x45670123
+#define KEY2 0xCDEF89AB
+
+struct stm32x_flash_bank
+{
+ struct working_area *write_algorithm;
+ int probed;
+};
+
+
+/* flash bank stm32x <base> <size> 0 0 <target#>
+ */
+FLASH_BANK_COMMAND_HANDLER(stm32x_flash_bank_command)
+{
+ struct stm32x_flash_bank *stm32x_info;
+
+ if (CMD_ARGC < 6)
+ {
+ LOG_WARNING("incomplete flash_bank stm32x configuration");
+ return ERROR_FLASH_BANK_INVALID;
+ }
+
+ stm32x_info = malloc(sizeof(struct stm32x_flash_bank));
+ bank->driver_priv = stm32x_info;
+
+ stm32x_info->write_algorithm = NULL;
+ stm32x_info->probed = 0;
+
+ return ERROR_OK;
+}
+
+static inline int stm32x_get_flash_reg(struct flash_bank *bank, uint32_t reg)
+{
+ return reg;
+}
+
+static inline int stm32x_get_flash_status(struct flash_bank *bank, uint32_t *status)
+{
+ struct target *target = bank->target;
+ return target_read_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_SR), status);
+}
+
+static int stm32x_wait_status_busy(struct flash_bank *bank, int timeout)
+{
+ struct target *target = bank->target;
+ uint32_t status;
+ int retval = ERROR_OK;
+
+ /* wait for busy to clear */
+ for (;;)
+ {
+ retval = stm32x_get_flash_status(bank, &status);
+ if (retval != ERROR_OK)
+ return retval;
+ LOG_DEBUG("status: 0x%" PRIx32 "", status);
+ if ((status & FLASH_BSY) == 0)
+ break;
+ if (timeout-- <= 0)
+ {
+ LOG_ERROR("timed out waiting for flash");
+ return ERROR_FAIL;
+ }
+ alive_sleep(1);
+ }
+
+
+ if (status & FLASH_WRPERR)
+ {
+ LOG_ERROR("stm32x device protected");
+ retval = ERROR_FAIL;
+ }
+
+ /* Clear but report errors */
+ if (status & FLASH_ERROR)
+ {
+ /* If this operation fails, we ignore it and report the original
+ * retval
+ */
+ target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_SR),
+ status & FLASH_ERROR);
+ }
+ return retval;
+}
+
+static int stm32x_unlock_reg(struct target *target)
+{
+ /* unlock flash registers */
+ int retval = target_write_u32(target, STM32_FLASH_KEYR, KEY1);
+ if (retval != ERROR_OK)
+ return retval;
+
+ retval = target_write_u32(target, STM32_FLASH_KEYR, KEY2);
+ if (retval != ERROR_OK)
+ return retval;
+ return ERROR_OK;
+}
+
+static int stm32x_protect_check(struct flash_bank *bank)
+{
+ return ERROR_OK;
+}
+
+static int stm32x_erase(struct flash_bank *bank, int first, int last)
+{
+ struct target *target = bank->target;
+ int i;
+
+ if (bank->target->state != TARGET_HALTED)
+ {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ int retval;
+ retval = stm32x_unlock_reg(target);
+ if (retval != ERROR_OK)
+ return retval;
+
+ /*
+ Sector Erase
+ To erase a sector, follow the procedure below:
+ 1. Check that no Flash memory operation is ongoing by checking the BSY bit in the
+ FLASH_SR register
+ 2. Set the SER bit and select the sector (out of the 12 sectors in the main memory block)
+ you wish to erase (SNB) in the FLASH_CR register
+ 3. Set the STRT bit in the FLASH_CR register
+ 4. Wait for the BSY bit to be cleared
+ */
+
+ for (i = first; i <= last; i++)
+ {
+ retval = target_write_u32(target,
+ stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_SER | FLASH_SNB(i) | FLASH_STRT);
+ if (retval != ERROR_OK)
+ return retval;
+
+ retval = stm32x_wait_status_busy(bank, FLASH_ERASE_TIMEOUT);
+ if (retval != ERROR_OK)
+ return retval;
+
+ bank->sectors[i].is_erased = 1;
+ }
+
+ retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_LOCK);
+ if (retval != ERROR_OK)
+ return retval;
+
+ return ERROR_OK;
+}
+
+static int stm32x_protect(struct flash_bank *bank, int set, int first, int last)
+{
+ return ERROR_OK;
+}
+
+static int stm32x_write_block(struct flash_bank *bank, uint8_t *buffer,
+ uint32_t offset, uint32_t count)
+{
+ struct stm32x_flash_bank *stm32x_info = bank->driver_priv;
+ struct target *target = bank->target;
+ uint32_t buffer_size = 16384;
+ struct working_area *source;
+ uint32_t address = bank->base + offset;
+ struct reg_param reg_params[5];
+ struct armv7m_algorithm armv7m_info;
+ int retval = ERROR_OK;
+
+ /* see contib/loaders/flash/stm32x.s for src */
+
+ static const uint16_t stm32x_flash_write_code_16[] = {
+// 00000000 <write>:
+ 0x4b07, // ldr r3, [pc, #28] (20 <STM32_PROG16>)
+ 0x6123, // str r3, [r4, #16]
+ 0xf830, 0x3b02, //ldrh.w r3, [r0], #2
+ 0xf821, 0x3b02, //strh.w r3, [r1], #2
+
+ //0000000c <busy>:
+ 0x68e3, //ldr r3, [r4, #12]
+0xf413, 0x3f80, // tst.w r3, #65536 ; 0x10000
+0xd0fb, //beq.n c <busy>
+0xf013, 0x0ff0, //tst.w r3, #240 ; 0xf0
+0xd101, //bne.n 1e <exit>
+0x3a01, //subs r2, #1
+0xd1f0, //bne.n 0 <write>
+ //0000001e <exit>:
+ 0xbe00, // bkpt 0x0000
+
+ //00000020 <STM32_PROG16>:
+ 0x0101, 0x0000, // .word 0x00000101
+
+ };
+
+ // Flip endian
+ uint8_t stm32x_flash_write_code[sizeof(stm32x_flash_write_code_16)*2];
+ for (unsigned i = 0; i < sizeof(stm32x_flash_write_code_16) / 2; i++)
+ {
+ stm32x_flash_write_code[i*2 + 0] = stm32x_flash_write_code_16[i] & 0xff;
+ stm32x_flash_write_code[i*2 + 1] = (stm32x_flash_write_code_16[i] >> 8) & 0xff;
+ }
+
+ if (target_alloc_working_area(target, sizeof(stm32x_flash_write_code),
+ &stm32x_info->write_algorithm) != ERROR_OK)
+ {
+ LOG_WARNING("no working area available, can't do block memory writes");
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ };
+
+ if ((retval = target_write_buffer(target, stm32x_info->write_algorithm->address,
+ sizeof(stm32x_flash_write_code),
+ (uint8_t*)stm32x_flash_write_code)) != ERROR_OK)
+ return retval;
+
+ /* memory buffer */
+ while (target_alloc_working_area_try(target, buffer_size, &source) != ERROR_OK)
+ {
+ buffer_size /= 2;
+ if (buffer_size <= 256)
+ {
+ /* if we already allocated the writing code, but failed to get a
+ * buffer, free the algorithm */
+ if (stm32x_info->write_algorithm)
+ target_free_working_area(target, stm32x_info->write_algorithm);
+
+ LOG_WARNING("no large enough working area available, can't do block memory writes");
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ }
+ };
+
+ armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
+ armv7m_info.core_mode = ARMV7M_MODE_ANY;
+
+ init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
+ init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
+ init_reg_param(&reg_params[2], "r2", 32, PARAM_OUT);
+ init_reg_param(&reg_params[3], "r3", 32, PARAM_IN_OUT);
+ init_reg_param(&reg_params[4], "r4", 32, PARAM_OUT);
+
+ while (count > 0)
+ {
+ uint32_t thisrun_count = (count > (buffer_size / 2)) ?
+ (buffer_size / 2) : count;
+
+ if ((retval = target_write_buffer(target, source->address,
+ thisrun_count * 2, buffer)) != ERROR_OK)
+ break;
+
+ buf_set_u32(reg_params[0].value, 0, 32, source->address);
+ buf_set_u32(reg_params[1].value, 0, 32, address);
+ buf_set_u32(reg_params[2].value, 0, 32, thisrun_count);
+ // R3 is a return value only
+ buf_set_u32(reg_params[4].value, 0, 32, STM32_FLASH_BASE);
+
+ if ((retval = target_run_algorithm(target, 0, NULL,
+ sizeof(reg_params) / sizeof(*reg_params),
+ reg_params,
+ stm32x_info->write_algorithm->address,
+ 0,
+ 10000, &armv7m_info)) != ERROR_OK)
+ {
+ LOG_ERROR("error executing stm32x flash write algorithm");
+ break;
+ }
+
+ uint32_t error = buf_get_u32(reg_params[3].value, 0, 32) & FLASH_ERROR;
+
+ if (error & FLASH_WRPERR)
+ {
+ LOG_ERROR("flash memory write protected");
+ }
+
+ if (error != 0)
+ {
+ LOG_ERROR("flash write failed = %08x", error);
+ /* Clear but report errors */
+ target_write_u32(target, STM32_FLASH_SR, error);
+ retval = ERROR_FAIL;
+ break;
+ }
+
+ buffer += thisrun_count * 2;
+ address += thisrun_count * 2;
+ count -= thisrun_count;
+ }
+
+ target_free_working_area(target, source);
+ target_free_working_area(target, stm32x_info->write_algorithm);
+
+ destroy_reg_param(&reg_params[0]);
+ destroy_reg_param(&reg_params[1]);
+ destroy_reg_param(&reg_params[2]);
+ destroy_reg_param(&reg_params[3]);
+ destroy_reg_param(&reg_params[4]);
+
+ return retval;
+}
+
+static int stm32x_write(struct flash_bank *bank, uint8_t *buffer,
+ uint32_t offset, uint32_t count)
+{
+ struct target *target = bank->target;
+ uint32_t words_remaining = (count / 2);
+ uint32_t bytes_remaining = (count & 0x00000001);
+ uint32_t address = bank->base + offset;
+ uint32_t bytes_written = 0;
+ int retval;
+
+ if (bank->target->state != TARGET_HALTED)
+ {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ if (offset & 0x1)
+ {
+ LOG_WARNING("offset 0x%" PRIx32 " breaks required 2-byte alignment", offset);
+ return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
+ }
+
+ retval = stm32x_unlock_reg(target);
+ if (retval != ERROR_OK)
+ return retval;
+
+ /* multiple half words (2-byte) to be programmed? */
+ if (words_remaining > 0)
+ {
+ /* try using a block write */
+ if ((retval = stm32x_write_block(bank, buffer, offset, words_remaining)) != ERROR_OK)
+ {
+ if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
+ {
+ /* if block write failed (no sufficient working area),
+ * we use normal (slow) single dword accesses */
+ LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
+ }
+ }
+ else
+ {
+ buffer += words_remaining * 2;
+ address += words_remaining * 2;
+ words_remaining = 0;
+ }
+ }
+
+ if ((retval != ERROR_OK) && (retval != ERROR_TARGET_RESOURCE_NOT_AVAILABLE))
+ return retval;
+
+ /*
+ Standard programming
+ The Flash memory programming sequence is as follows:
+ 1. Check that no main Flash memory operation is ongoing by checking the BSY bit in the
+ FLASH_SR register.
+ 2. Set the PG bit in the FLASH_CR register
+ 3. Perform the data write operation(s) to the desired memory address (inside main
+ memory block or OTP area):
+ – – Half-word access in case of x16 parallelism
+ – Word access in case of x32 parallelism
+ –
+ 4.
+ Byte access in case of x8 parallelism
+ Double word access in case of x64 parallelism
+ Wait for the BSY bit to be cleared
+ */
+ while (words_remaining > 0)
+ {
+ uint16_t value;
+ memcpy(&value, buffer + bytes_written, sizeof(uint16_t));
+
+ retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR),
+ FLASH_PG | FLASH_PSIZE_16);
+ if (retval != ERROR_OK)
+ return retval;
+
+ retval = target_write_u16(target, address, value);
+ if (retval != ERROR_OK)
+ return retval;
+
+ retval = stm32x_wait_status_busy(bank, FLASH_WRITE_TIMEOUT);
+ if (retval != ERROR_OK)
+ return retval;
+
+ bytes_written += 2;
+ words_remaining--;
+ address += 2;
+ }
+
+ if (bytes_remaining)
+ {
+ retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR),
+ FLASH_PG | FLASH_PSIZE_8);
+ if (retval != ERROR_OK)
+ return retval;
+ retval = target_write_u8(target, address, buffer[bytes_written]);
+ if (retval != ERROR_OK)
+ return retval;
+
+ retval = stm32x_wait_status_busy(bank, FLASH_WRITE_TIMEOUT);
+ if (retval != ERROR_OK)
+ return retval;
+ }
+
+ return target_write_u32(target, STM32_FLASH_CR, FLASH_LOCK);
+}
+
+static void setup_sector(struct flash_bank *bank, int start, int num, int size)
+{
+ for (int i = start; i < (start + num) ; i++)
+ {
+ bank->sectors[i].offset = bank->size;
+ bank->sectors[i].size = size;
+ bank->size += bank->sectors[i].size;
+ }
+}
+
+static int stm32x_probe(struct flash_bank *bank)
+{
+ struct target *target = bank->target;
+ struct stm32x_flash_bank *stm32x_info = bank->driver_priv;
+ int i;
+ uint16_t num_pages;
+ uint32_t device_id;
+ uint32_t base_address = 0x08000000;
+
+ stm32x_info->probed = 0;
+
+ /* read stm32 device id register */
+ int retval = target_read_u32(target, 0xE0042000, &device_id);
+ if (retval != ERROR_OK)
+ return retval;
+ LOG_INFO("device id = 0x%08" PRIx32 "", device_id);
+
+ /* get flash size from target. */
+ retval = target_read_u16(target, 0x1FFFF7E0, &num_pages);
+ if (retval != ERROR_OK)
+ {
+ LOG_WARNING("failed reading flash size, default to max target family");
+ /* failed reading flash size, default to max target family */
+ num_pages = 0xffff;
+ }
+
+ if ((device_id & 0x7ff) != 0x411)
+ {
+ LOG_WARNING("Cannot identify target as a STM32 family, try the other STM32 drivers.");
+ return ERROR_FAIL;
+ }
+
+ /* sectors sizes vary, handle this in a different code path
+ * than the rest.
+ */
+ // Uhhh.... what to use here?
+
+ /* calculate numbers of pages*/
+ num_pages = 4 + 1 + 7;
+
+ if (bank->sectors)
+ {
+ free(bank->sectors);
+ bank->sectors = NULL;
+ }
+
+ bank->base = base_address;
+ bank->num_sectors = num_pages;
+ bank->sectors = malloc(sizeof(struct flash_sector) * num_pages);
+
+ bank->size = 0;
+ setup_sector(bank, 0, 4, 16 * 1024);
+ setup_sector(bank, 4, 1, 64 * 1024);
+ setup_sector(bank, 4+1, 7, 128 * 1024);
+
+ for (i = 0; i < num_pages; i++)
+ {
+ bank->sectors[i].is_erased = -1;
+ bank->sectors[i].is_protected = 0;
+ }
+
+ LOG_INFO("flash size = %dkBytes", bank->size / 1024);
+
+ stm32x_info->probed = 1;
+
+ return ERROR_OK;
+}
+
+static int stm32x_auto_probe(struct flash_bank *bank)
+{
+ struct stm32x_flash_bank *stm32x_info = bank->driver_priv;
+ if (stm32x_info->probed)
+ return ERROR_OK;
+ return stm32x_probe(bank);
+}
+
+static int get_stm32x_info(struct flash_bank *bank, char *buf, int buf_size)
+{
+ struct target *target = bank->target;
+ uint32_t device_id;
+ int printed;
+
+ /* read stm32 device id register */
+ int retval = target_read_u32(target, 0xE0042000, &device_id);
+ if (retval != ERROR_OK)
+ return retval;
+
+ if ((device_id & 0x7ff) == 0x411)
+ {
+ printed = snprintf(buf, buf_size, "stm32x (1mByte part) - Rev: ");
+ buf += printed;
+ buf_size -= printed;
+
+ switch (device_id >> 16)
+ {
+ case 0x1000:
+ snprintf(buf, buf_size, "A");
+ break;
+
+ case 0x2000:
+ snprintf(buf, buf_size, "B");
+ break;
+
+ case 0x1001:
+ snprintf(buf, buf_size, "Z");
+ break;
+
+ default:
+ snprintf(buf, buf_size, "unknown");
+ break;
+ }
+ }
+ else
+ {
+ snprintf(buf, buf_size, "Cannot identify target as a stm32x\n");
+ return ERROR_FAIL;
+ }
+
+ return ERROR_OK;
+}
+
+static const struct command_registration stm32x_exec_command_handlers[] = {
+ COMMAND_REGISTRATION_DONE
+};
+
+static const struct command_registration stm32x_command_handlers[] = {
+ {
+ .name = "stm32f2xxx",
+ .mode = COMMAND_ANY,
+ .help = "stm32f2xxx flash command group",
+ .chain = stm32x_exec_command_handlers,
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
+struct flash_driver stm32xf2xxx_flash = {
+ .name = "stm32f2xxx",
+ .commands = stm32x_command_handlers,
+ .flash_bank_command = stm32x_flash_bank_command,
+ .erase = stm32x_erase,
+ .protect = stm32x_protect,
+ .write = stm32x_write,
+ .read = default_flash_read,
+ .probe = stm32x_probe,
+ .auto_probe = stm32x_auto_probe,
+ .erase_check = default_flash_mem_blank_check,
+ .protect_check = stm32x_protect_check,
+ .info = get_stm32x_info,
+};
generated by cgit v1.2.3 (git 2.46.0) at 2024-12-22 22:22:59 +0000