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-rw-r--r--libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_CRYPTECH_ALPHA/TOOLCHAIN_GCC_ARM/STM32F429BI.ld31
-rw-r--r--libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_CRYPTECH_ALPHA/TOOLCHAIN_GCC_ARM/STM32F429BI_bootloader.ld172
-rw-r--r--libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_CRYPTECH_ALPHA/system_stm32f4xx.c6
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 */