diff options
Diffstat (limited to 'libraries/mbed/targets')
3 files changed, 202 insertions, 7 deletions
diff --git a/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_CRYPTECH_ALPHA/TOOLCHAIN_GCC_ARM/STM32F429BI.ld b/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_CRYPTECH_ALPHA/TOOLCHAIN_GCC_ARM/STM32F429BI.ld index c3aa304..ad7ddaf 100644 --- a/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_CRYPTECH_ALPHA/TOOLCHAIN_GCC_ARM/STM32F429BI.ld +++ b/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_CRYPTECH_ALPHA/TOOLCHAIN_GCC_ARM/STM32F429BI.ld @@ -1,16 +1,24 @@ -/* Linker script to configure memory regions. */ +/* Linker script to configure memory regions. + * + * This is the script for the firmware (meaning any application except the bootloader). + * It should be placed 128 KB from the start of the STM32 internal flash. + * + */ MEMORY -{ - FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 2048k - CCM (rwx) : ORIGIN = 0x10000000, LENGTH = 64K - RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 192k +{ + /* FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 2048k */ + BOOTLOADER (rx) : ORIGIN = 0x08000000, LENGTH = 128K + FIRMWARE (rx) : ORIGIN = 0x08000000 + 128K, LENGTH = 2048K - 128K + FLASH (rx) : ORIGIN = 0x08000000 + 128K, LENGTH = 2048K - 128K + RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 192K - 4 } +/* original: FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 2048K */ /* Linker script to place sections and symbol values. Should be used together * with other linker script that defines memory regions FLASH and RAM. * It references following symbols, which must be defined in code: * Reset_Handler : Entry of reset handler - * + * * It defines following symbols, which code can use without definition: * __exidx_start * __exidx_end @@ -149,6 +157,17 @@ SECTIONS __StackLimit = __StackTop - SIZEOF(.stack_dummy); PROVIDE(__stack = __StackTop); + /* The DFU code needs to know where the firmware lives */ + CRYPTECH_BOOTLOADER_START = ORIGIN(BOOTLOADER); + CRYPTECH_BOOTLOADER_END = ORIGIN(BOOTLOADER) + LENGTH(BOOTLOADER) - 1; + CRYPTECH_FIRMWARE_START = ORIGIN(FIRMWARE); + CRYPTECH_FIRMWARE_END = ORIGIN(FIRMWARE) + LENGTH(FIRMWARE) - 1; + /* The last 4 bytes of RAM is used to control the DFU reset+jumping. + * Have to be reserved in here to not get overwritten by the Reset_Handler + * that zeros memory. Maybe there is a better way? + */ + CRYPTECH_DFU_CONTROL = ORIGIN(RAM) + LENGTH(RAM); + /* Check if data + heap + stack exceeds RAM limit */ ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack") } diff --git a/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_CRYPTECH_ALPHA/TOOLCHAIN_GCC_ARM/STM32F429BI_bootloader.ld b/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_CRYPTECH_ALPHA/TOOLCHAIN_GCC_ARM/STM32F429BI_bootloader.ld new file mode 100644 index 0000000..2a5de56 --- /dev/null +++ b/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_CRYPTECH_ALPHA/TOOLCHAIN_GCC_ARM/STM32F429BI_bootloader.ld @@ -0,0 +1,172 @@ +/* Linker script to configure memory regions. + * + * This one is for the bootloader, so FLASH points at the real beginning of the + * STM32 internal flash memory (0x08000000). + * + */ +MEMORY +{ + /* FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 2048k */ + BOOTLOADER (rx) : ORIGIN = 0x08000000, LENGTH = 128K + FIRMWARE (rx) : ORIGIN = 0x08000000 + 128K, LENGTH = 2048K - 128K + FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 2048K + RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 192K - 4 +} + +/* Linker script to place sections and symbol values. Should be used together + * with other linker script that defines memory regions FLASH and RAM. + * It references following symbols, which must be defined in code: + * Reset_Handler : Entry of reset handler + * + * It defines following symbols, which code can use without definition: + * __exidx_start + * __exidx_end + * __etext + * __data_start__ + * __preinit_array_start + * __preinit_array_end + * __init_array_start + * __init_array_end + * __fini_array_start + * __fini_array_end + * __data_end__ + * __bss_start__ + * __bss_end__ + * __end__ + * end + * __HeapLimit + * __StackLimit + * __StackTop + * __stack + * _estack + */ +ENTRY(Reset_Handler) + +SECTIONS +{ + .text : + { + KEEP(*(.isr_vector)) + *(.text*) + KEEP(*(.init)) + KEEP(*(.fini)) + + /* .ctors */ + *crtbegin.o(.ctors) + *crtbegin?.o(.ctors) + *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors) + *(SORT(.ctors.*)) + *(.ctors) + + /* .dtors */ + *crtbegin.o(.dtors) + *crtbegin?.o(.dtors) + *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors) + *(SORT(.dtors.*)) + *(.dtors) + + *(.rodata*) + + KEEP(*(.eh_frame*)) + } > FLASH + + .ARM.extab : + { + *(.ARM.extab* .gnu.linkonce.armextab.*) + } > FLASH + + __exidx_start = .; + .ARM.exidx : + { + *(.ARM.exidx* .gnu.linkonce.armexidx.*) + } > FLASH + __exidx_end = .; + + __etext = .; + _sidata = .; + + .data : AT (__etext) + { + __data_start__ = .; + _sdata = .; + *(vtable) + *(.data*) + + . = ALIGN(4); + /* preinit data */ + PROVIDE_HIDDEN (__preinit_array_start = .); + KEEP(*(.preinit_array)) + PROVIDE_HIDDEN (__preinit_array_end = .); + + . = ALIGN(4); + /* init data */ + PROVIDE_HIDDEN (__init_array_start = .); + KEEP(*(SORT(.init_array.*))) + KEEP(*(.init_array)) + PROVIDE_HIDDEN (__init_array_end = .); + + + . = ALIGN(4); + /* finit data */ + PROVIDE_HIDDEN (__fini_array_start = .); + KEEP(*(SORT(.fini_array.*))) + KEEP(*(.fini_array)) + PROVIDE_HIDDEN (__fini_array_end = .); + + KEEP(*(.jcr*)) + . = ALIGN(4); + /* All data end */ + __data_end__ = .; + _edata = .; + + } > RAM + + .bss : + { + . = ALIGN(4); + __bss_start__ = .; + _sbss = .; + *(.bss*) + *(COMMON) + . = ALIGN(4); + __bss_end__ = .; + _ebss = .; + } > RAM + + .heap (COPY): + { + __end__ = .; + end = __end__; + *(.heap*) + __HeapLimit = .; + } > RAM + + /* .stack_dummy section doesn't contains any symbols. It is only + * used for linker to calculate size of stack sections, and assign + * values to stack symbols later */ + .stack_dummy (COPY): + { + *(.stack*) + } > RAM + + /* Set stack top to end of RAM, and stack limit move down by + * size of stack_dummy section */ + __StackTop = ORIGIN(RAM) + LENGTH(RAM); + _estack = __StackTop; + __StackLimit = __StackTop - SIZEOF(.stack_dummy); + PROVIDE(__stack = __StackTop); + + /* The DFU code needs to know where the firmware lives */ + CRYPTECH_BOOTLOADER_START = ORIGIN(BOOTLOADER); + CRYPTECH_BOOTLOADER_END = ORIGIN(BOOTLOADER) + LENGTH(BOOTLOADER) - 1; + CRYPTECH_FIRMWARE_START = ORIGIN(FIRMWARE); + CRYPTECH_FIRMWARE_END = ORIGIN(FIRMWARE) + LENGTH(FIRMWARE) - 1; + /* The last 4 bytes of RAM is used to control the DFU reset+jumping. + * Have to be reserved in here to not get overwritten by the Reset_Handler + * that zeros memory. Maybe there is a better way? + */ + CRYPTECH_DFU_CONTROL = ORIGIN(RAM) + LENGTH(RAM); + + /* Check if data + heap + stack exceeds RAM limit */ + ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack") +} diff --git a/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_CRYPTECH_ALPHA/system_stm32f4xx.c b/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_CRYPTECH_ALPHA/system_stm32f4xx.c index c2816d0..2824fd6 100644 --- a/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_CRYPTECH_ALPHA/system_stm32f4xx.c +++ b/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_CRYPTECH_ALPHA/system_stm32f4xx.c @@ -197,10 +197,14 @@ void SystemInit(void) #endif /* DATA_IN_ExtSRAM || DATA_IN_ExtSDRAM */ /* Configure the Vector Table location add offset address ------------------*/ + /* cryptech: Don't change VTOR if it is already set up by the bootloader */ #ifdef VECT_TAB_SRAM SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM */ #else - SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH */ + /* Set up VTOR unless it has already been set by the bootloader. */ + if (! SCB->VTOR) { + SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH */ + } #endif /* Configure the Cube driver */ |