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authorSpencer Oliver <ntfreak@users.sourceforge.net>2010-12-22 17:18:14 +0000
committerSpencer Oliver <ntfreak@users.sourceforge.net>2010-12-23 12:11:13 +0000
commit83e5aaf577ef86c767f22044e1a8dcc4d136597f (patch)
tree12c1a1a8b1c3ac28c4c1161a1a197feedb30f4bd /src/flash/nor
parent921f40f62a76426294ad2841a8b5da8b919bf10f (diff)
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stm32: add dual flash bank support
This patch adds the initial dual flash bank support for devices such as the stm32xl family. Signed-off-by: Spencer Oliver <ntfreak@users.sourceforge.net>
Diffstat (limited to 'src/flash/nor')
-rw-r--r--src/flash/nor/stm32x.c63
1 files changed, 37 insertions, 26 deletions
diff --git a/src/flash/nor/stm32x.c b/src/flash/nor/stm32x.c
index 3c49b8be..8aae2036 100644
--- a/src/flash/nor/stm32x.c
+++ b/src/flash/nor/stm32x.c
@@ -29,7 +29,6 @@
#include <target/algorithm.h>
#include <target/armv7m.h>
-
/* stm32x register locations */
#define STM32_FLASH_ACR 0x40022000
@@ -83,7 +82,6 @@
#define KEY1 0x45670123
#define KEY2 0xCDEF89AB
-
struct stm32x_options
{
uint16_t RDP;
@@ -97,11 +95,11 @@ struct stm32x_flash_bank
struct working_area *write_algorithm;
int ppage_size;
int probed;
-};
-struct stm32x_mem_layout {
- uint32_t sector_start;
- uint32_t sector_size;
+ /* used to access dual flash bank stm32xl
+ * 0x00 will address sector 0 flash
+ * 0x40 will address sector 1 flash */
+ int register_offset;
};
static int stm32x_mass_erase(struct flash_bank *bank);
@@ -123,14 +121,21 @@ FLASH_BANK_COMMAND_HANDLER(stm32x_flash_bank_command)
stm32x_info->write_algorithm = NULL;
stm32x_info->probed = 0;
+ stm32x_info->register_offset = 0x00;
return ERROR_OK;
}
-static int stm32x_get_flash_status(struct flash_bank *bank, uint32_t *status)
+static inline int stm32x_get_flash_reg(struct flash_bank *bank, uint32_t reg)
+{
+ struct stm32x_flash_bank *stm32x_info = bank->driver_priv;
+ return reg + stm32x_info->register_offset;
+}
+
+static inline int stm32x_get_flash_status(struct flash_bank *bank, uint32_t *status)
{
struct target *target = bank->target;
- return target_read_u32(target, STM32_FLASH_SR, status);
+ 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)
@@ -174,7 +179,8 @@ static int stm32x_wait_status_busy(struct flash_bank *bank, int timeout)
/* If this operation fails, we ignore it and report the original
* retval
*/
- target_write_u32(target, STM32_FLASH_SR, FLASH_WRPRTERR | FLASH_PGERR);
+ target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_SR),
+ FLASH_WRPRTERR | FLASH_PGERR);
}
return retval;
}
@@ -437,22 +443,24 @@ static int stm32x_erase(struct flash_bank *bank, int first, int last)
}
/* unlock flash registers */
- int retval = target_write_u32(target, STM32_FLASH_KEYR, KEY1);
+ int retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY1);
if (retval != ERROR_OK)
return retval;
- retval = target_write_u32(target, STM32_FLASH_KEYR, KEY2);
+ retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY2);
if (retval != ERROR_OK)
return retval;
for (i = first; i <= last; i++)
{
- retval = target_write_u32(target, STM32_FLASH_CR, FLASH_PER);
+ retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_PER);
if (retval != ERROR_OK)
return retval;
- retval = target_write_u32(target, STM32_FLASH_AR, bank->base + bank->sectors[i].offset);
+ retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_AR),
+ bank->base + bank->sectors[i].offset);
if (retval != ERROR_OK)
return retval;
- retval = target_write_u32(target, STM32_FLASH_CR, FLASH_PER | FLASH_STRT);
+ retval = target_write_u32(target,
+ stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_PER | FLASH_STRT);
if (retval != ERROR_OK)
return retval;
@@ -463,7 +471,7 @@ static int stm32x_erase(struct flash_bank *bank, int first, int last)
bank->sectors[i].is_erased = 1;
}
- retval = target_write_u32(target, STM32_FLASH_CR, FLASH_LOCK);
+ retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_LOCK);
if (retval != ERROR_OK)
return retval;
@@ -586,7 +594,8 @@ static int stm32x_write_block(struct flash_bank *bank, uint8_t *buffer,
/* #define STM32_FLASH_CR_OFFSET 0x10 */
/* #define STM32_FLASH_SR_OFFSET 0x0C */
/* write: */
- 0xdf, 0xf8, 0x20, 0x40, /* ldr r4, STM32_FLASH_BASE */
+ 0x08, 0x4c, /* ldr r4, STM32_FLASH_BASE */
+ 0x1c, 0x44, /* add r4, r3 */
/* write_half_word: */
0x01, 0x23, /* movs r3, #0x01 */
0x23, 0x61, /* str r3, [r4, #STM32_FLASH_CR_OFFSET] */
@@ -640,7 +649,7 @@ static int stm32x_write_block(struct flash_bank *bank, uint8_t *buffer,
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);
+ init_reg_param(&reg_params[3], "r3", 32, PARAM_IN_OUT);
while (count > 0)
{
@@ -654,6 +663,7 @@ static int stm32x_write_block(struct flash_bank *bank, uint8_t *buffer,
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);
+ buf_set_u32(reg_params[3].value, 0, 32, stm32x_info->register_offset);
if ((retval = target_run_algorithm(target, 0, NULL, 4, reg_params,
stm32x_info->write_algorithm->address,
@@ -721,10 +731,10 @@ static int stm32x_write(struct flash_bank *bank, uint8_t *buffer,
}
/* unlock flash registers */
- retval = target_write_u32(target, STM32_FLASH_KEYR, KEY1);
+ retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY1);
if (retval != ERROR_OK)
return retval;
- retval = target_write_u32(target, STM32_FLASH_KEYR, KEY2);
+ retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY2);
if (retval != ERROR_OK)
return retval;
@@ -757,7 +767,7 @@ static int stm32x_write(struct flash_bank *bank, uint8_t *buffer,
uint16_t value;
memcpy(&value, buffer + bytes_written, sizeof(uint16_t));
- retval = target_write_u32(target, STM32_FLASH_CR, FLASH_PG);
+ retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_PG);
if (retval != ERROR_OK)
return retval;
retval = target_write_u16(target, address, value);
@@ -778,7 +788,7 @@ static int stm32x_write(struct flash_bank *bank, uint8_t *buffer,
uint16_t value = 0xffff;
memcpy(&value, buffer + bytes_written, bytes_remaining);
- retval = target_write_u32(target, STM32_FLASH_CR, FLASH_PG);
+ retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_PG);
if (retval != ERROR_OK)
return retval;
retval = target_write_u16(target, address, value);
@@ -803,6 +813,7 @@ static int stm32x_probe(struct flash_bank *bank)
int page_size;
stm32x_info->probed = 0;
+ stm32x_info->register_offset = 0x00;
/* read stm32 device id register */
int retval = target_read_u32(target, 0xE0042000, &device_id);
@@ -1315,18 +1326,18 @@ static int stm32x_mass_erase(struct flash_bank *bank)
}
/* unlock option flash registers */
- int retval = target_write_u32(target, STM32_FLASH_KEYR, KEY1);
+ int retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY1);
if (retval != ERROR_OK)
return retval;
- retval = target_write_u32(target, STM32_FLASH_KEYR, KEY2);
+ retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY2);
if (retval != ERROR_OK)
return retval;
/* mass erase flash memory */
- retval = target_write_u32(target, STM32_FLASH_CR, FLASH_MER);
+ retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_MER);
if (retval != ERROR_OK)
return retval;
- retval = target_write_u32(target, STM32_FLASH_CR, FLASH_MER | FLASH_STRT);
+ retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_MER | FLASH_STRT);
if (retval != ERROR_OK)
return retval;
@@ -1334,7 +1345,7 @@ static int stm32x_mass_erase(struct flash_bank *bank)
if (retval != ERROR_OK)
return retval;
- retval = target_write_u32(target, STM32_FLASH_CR, FLASH_LOCK);
+ retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_LOCK);
if (retval != ERROR_OK)
return retval;