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Add option to use CCMRAM on F303xE. #11756

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Merged
merged 1 commit into from
Oct 30, 2019
Merged

Add option to use CCMRAM on F303xE. #11756

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6 changes: 5 additions & 1 deletion ...ets/TARGET_STM/TARGET_STM32F3/TARGET_STM32F303xE/device/TOOLCHAIN_ARM_STD/stm32f303xe.sct
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Original file line number Diff line number Diff line change
Expand Up @@ -42,7 +42,7 @@

#define Stack_Size MBED_BOOT_STACK_SIZE

; STM32F303RE: 512KB FLASH (0x80000) + 64KB SRAM (0x10000)
; STM32F303RE: 512KB FLASH (0x80000) + 64KB SRAM (0x10000) + 16KB CCMRAM (0x4000)
LR_IROM1 MBED_APP_START MBED_APP_SIZE { ; load region size_region

ER_IROM1 MBED_APP_START MBED_APP_SIZE { ; load address = execution address
Expand All @@ -58,5 +58,9 @@ LR_IROM1 MBED_APP_START MBED_APP_SIZE { ; load region size_region

ARM_LIB_STACK (0x20000000+0x10000) EMPTY -Stack_Size { ; stack
}

CCMRAM (0x10000000) (0x4000) {
.ANY (CCMRAM)
}
}

7 changes: 7 additions & 0 deletions targets/TARGET_STM/TARGET_STM32F3/TARGET_STM32F303xE/device/TOOLCHAIN_GCC_ARM/STM32F303XE.ld
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Expand Up @@ -168,5 +168,12 @@ SECTIONS

/* Check if data + heap + stack exceeds RAM limit */
ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")

.CCMRAM (NOLOAD):
{
Image$$RW_IRAM2$$Base = . ;
*(CCMRAM)
Image$$RW_IRAM2$$ZI$$Limit = .;
} > CCM
}

2 changes: 2 additions & 0 deletions targets/TARGET_STM/TARGET_STM32F3/TARGET_STM32F303xE/device/TOOLCHAIN_IAR/stm32f303xe.icf
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Expand Up @@ -33,8 +33,10 @@ define block STACKHEAP with fixed order { block HEAP, block CSTACK };

initialize by copy with packing = zeros { readwrite };
do not initialize { section .noinit };
do not initialize { section CCMRAM };

place at address mem:__intvec_start__ { readonly section .intvec };

place in ROM_region { readonly };
place in RAM_region { readwrite, block STACKHEAP };
place in CCMRAM_region { section CCMRAM };