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DISCO L475VG IOT01A: heap in SRAM2 region #9588

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Merged
merged 3 commits into from
Feb 4, 2019
Merged

DISCO L475VG IOT01A: heap in SRAM2 region #9588

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aa2d49a
Move BSS to SRAM2 to increase heap size on ST475 IOT board
linlingao Jan 18, 2019
85762a8
Update bootloader for ST disco board to fix FOTA
linlingao Jan 18, 2019
837e86d
Updated linker script for IAR and ARM to increase heap size by moving…
linlingao Jan 30, 2019
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Binary file modified ...STM32L4/TARGET_STM32L475xG/TARGET_DISCO_L475VG_IOT01A/mbed-bootloader-internal_dfb7cc.bin
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4 changes: 2 additions & 2 deletions ...ets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L475xG/TARGET_DISCO_L475VG_IOT01A/mbed_lib.json
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Original file line number Diff line number Diff line change
Expand Up @@ -2,8 +2,8 @@
"name": "bootloader_DISCO_L475VG_IOT01A",
"target_overrides": {
"*": {
"target.app_offset": "0x9800",
"target.header_offset": "0x9000",
"target.app_offset": "0x10400",
"target.header_offset": "0x10000",
"target.bootloader_img": "mbed-bootloader-internal_dfb7cc.bin"
}
}
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6 changes: 3 additions & 3 deletions ...ets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L475xG/device/TOOLCHAIN_ARM_STD/stm32l475xx.sct
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Expand Up @@ -60,11 +60,11 @@ LR_IROM1 MBED_APP_START MBED_APP_SIZE { ; load region size_region
RW_m_crash_data MBED_CRASH_REPORT_RAM_START EMPTY MBED_CRASH_REPORT_RAM_SIZE { ; RW data
}
RW_IRAM1 MBED_RAM0_START MBED_RAM0_SIZE-Stack_Size { ; RW data 96k L4-SRAM1
.ANY (+RW +ZI)
.ANY (+RW, +Last)
}
; Total: 98 vectors = 392 bytes (0x188) to be reserved in RAM
RW_IRAM2 (0x10000000+0x188) (0x08000-0x188) { ; RW data 32k L4-ECC-SRAM2 retained in standby
.ANY (+RW +ZI)
RW_IRAM2 (0x10000000+0x188) (0x08000-0x188) { ; ZI data 32k L4-ECC-SRAM2
.ANY (+ZI)
}
ARM_LIB_STACK (MBED_RAM0_START+MBED_RAM0_SIZE) EMPTY -Stack_Size { ; stack
}
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5 changes: 3 additions & 2 deletions targets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L475xG/device/TOOLCHAIN_GCC_ARM/STM32L475XX.ld
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Expand Up @@ -152,7 +152,7 @@ SECTIONS
. = ALIGN(8);
__bss_end__ = .;
_ebss = .;
} > SRAM1
} > SRAM2

.heap (COPY):
{
Expand Down Expand Up @@ -183,5 +183,6 @@ SECTIONS
PROVIDE(__stack = __StackTop);
/* Check if stack exceeds RAM2 limit */
ASSERT((ORIGIN(SRAM2)+LENGTH(SRAM2)) >= __StackLimit, "SRAM2 overflow")

/* Check if bss exceeds __StackLimit */
ASSERT(__bss_end__ <= __StackLimit, "BSS is too big for RAM2")
}
4 changes: 2 additions & 2 deletions targets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L475xG/device/TOOLCHAIN_IAR/stm32l475xx.icf
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Expand Up @@ -33,7 +33,7 @@ if (!isdefinedsymbol(MBED_BOOT_STACK_SIZE)) {
}

define symbol __size_cstack__ = MBED_BOOT_STACK_SIZE;
define symbol __size_heap__ = 0x10000;
define symbol __size_heap__ = 0x17000;
define block CSTACK with alignment = 8, size = __size_cstack__ { };
define block HEAP with alignment = 8, size = __size_heap__ { };

Expand All @@ -44,4 +44,4 @@ place at address mem:__intvec_start__ { readonly section .intvec };

place in ROM_region { readonly };
place in SRAM1_region { readwrite, block HEAP };
place in SRAM2_region { block CSTACK };
place in SRAM2_region { first block CSTACK, zeroinit };