How to make program start from a customized address?

The memory mapped at zero at reset is controlled by the BOOTx pins, these define THREE addresses, 0x080E0000 is NOT one of them.

http://www.keil.com/forum/59235/

; Vector Table Mapped to Address 0 at Reset
AREA RESETZERO, DATA, READONLY
DCD __initial_sp ; Top of Stack
DCD Reset_Handler ; Reset Handler

; *************************************************************
; *** Scatter-Loading Description File generated by uVision ***
; *************************************************************
LR_IROM1 0x080E0000 0x00020000 { ; load region size_region
ER_IROM1 0x080E0000 0x00020000 { ; load address = execution address
*.o (RESET, +First)
*(InRoot$$Sections)
.ANY (+RO)
}
RW_IRAM1 0x20000000 0x00020000 { ; RW data
.ANY (+RW +ZI)
}
}
LR_IROM2 0x08000000 0x00000010 { ; load region size_region
ER_IROM2 0x08000000 0x00000010 { ; load address = execution address
*.o (RESETZERO)
}
}

My biggest mistake. The program still can't run. It was the one that previously burned to 0x8000000 which runs even though the modified one was burned to 0x80E0000. So back to square 1. :(

Does it mean I have to write my won startup code? In the default onestartup_stm32f4xx.s

; Vector Table Mapped to Address 0 at Reset
AREA RESET, DATA, READONLY
EXPORT __Vectors
EXPORT __Vectors_End
EXPORT __Vectors_Size
__Vectors DCD __initial_sp ; Top of Stack
DCD Reset_Handler ; Reset Handler

LR_IROM1 0x080E0000 0x00020000 { ; load region size_region
ER_IROM1 0x080E0000 0x00020000 { ; load address = execution address
*.o (RESET, +First)
*(InRoot$$Sections)
.ANY (+RO)
}
RW_IRAM1 0x20000000 0x00001000 { ; RW data
.ANY (+RW +ZI)
}
}
LR_IROM2 0x08000000 0x00000100 {
ER_IROM2 0x08000000 0x00000100 { ; load address = execution address
.ANY (+RO)
}
}

.ANY (+RO) to

Error: L6223E: Ambiguous selectors found for startup_stm32f4xx.o(RESET) from Exec regions ER_IROM1 and ER_IROM2.

Hello,

The post is to ancient, but if someone need start de App in a specific location on memory, need to do the next steps:

Step 1: Open xxxx_FLASH.Id and change the line #50 or when you can find the text
"FLASH (rx) : ORIGIN = 0x8000000, LENGTH = 1024K" (for STM32F407, p.e.) and modify the ORIGIN with
the FLASH_ADDR_APP_JUMP_EN and the LENGTH subtracting the DFU and EEPROM sizes. P.E.:

If FLASH_ADDR_APP_JUMP_EN = 0x08010000, put in ORIGIN = 0x08010000 and LENGHT = 960K

Step 2: Open ../Drivers/CMSIS/Device/ST/STM32F4xx/Include/stm32F407xx.h and change the line
#906 or when you can find the text "#define FLASH_BASE 0x08000000UL" and
modify the value with the FLASH_ADDR_APP_JUMP_EN. P.E.:

If FLASH_ADDR_APP_JUMP_EN = 0x08010000, put in FLASH_BASE the value 0x08010000

Step 3: In the sysetm_stm32f4xx.c file, in line #94, uncomment the definition
"#define USER_VECT_TAB_ADDRESS" for relocate the vector table and, in the line #108
put the offset value. P.E.:

FLASH_ADDR_APP_JUMP_EN = 0x08010000 => #define VECT_TAB_OFFSET 0x00010000U

With this simples steps, you can configure all, position for code and table vectors. Only need to jump to this position to run without a DFU or another program in the empty space.

Regards