refactor(core): remove unused linker script symbols

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trezor · Jan 16, 2025 · e3542c3 · e3542c3
1 parent bfddc49
commit e3542c3
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diff --git a/core/embed/sys/linker/stm32f4/boardloader.ld b/core/embed/sys/linker/stm32f4/boardloader.ld
@@ -33,24 +33,6 @@ _accessible_ram_1_end = MCU_SRAM + MCU_SRAM_SIZE;
 _bootargs_ram_start = BOOTARGS_START;
 _bootargs_ram_end = BOOTARGS_START + BOOTARGS_SIZE;
 
-/* used by the startup code to wipe memory */
-_startup_clear_ram_0_start = MCU_CCMRAM;
-_startup_clear_ram_0_end = MCU_CCMRAM + MCU_CCMRAM_SIZE;
-_startup_clear_ram_1_start = MCU_SRAM;
-_startup_clear_ram_1_end = MCU_SRAM + MCU_SRAM_SIZE;
-
-/* used by the startup/jump code to wipe memory */
-_handoff_clear_ram_0_start = MCU_CCMRAM;
-_handoff_clear_ram_0_end = MCU_CCMRAM + MCU_CCMRAM_SIZE;
-_handoff_clear_ram_1_start = MCU_SRAM;
-_handoff_clear_ram_1_end = MCU_SRAM + MCU_SRAM_SIZE;
-
-/* used by the shutdown code to wipe memory */
-_shutdown_clear_ram_0_start = MCU_CCMRAM;
-_shutdown_clear_ram_0_end = MCU_CCMRAM + MCU_CCMRAM_SIZE;
-_shutdown_clear_ram_1_start = MCU_SRAM;
-_shutdown_clear_ram_1_end = MCU_SRAM + MCU_SRAM_SIZE;
-
 SECTIONS {
   .vector_table : ALIGN(CODE_ALIGNMENT) {
     KEEP(*(.vector_table));

diff --git a/core/embed/sys/linker/stm32f4/bootloader.ld b/core/embed/sys/linker/stm32f4/bootloader.ld
@@ -33,28 +33,6 @@ _accessible_ram_1_end = MCU_SRAM + MCU_SRAM_SIZE;
 _bootargs_ram_start = BOOTARGS_START;
 _bootargs_ram_end = BOOTARGS_START + BOOTARGS_SIZE;
 
-/* used by the startup code to wipe memory */
-_startup_clear_ram_0_start = MCU_CCMRAM;
-_startup_clear_ram_0_end = MCU_CCMRAM + MCU_CCMRAM_SIZE - BOOTARGS_SIZE;
-_startup_clear_ram_1_start = MCU_SRAM;
-_startup_clear_ram_1_end = MCU_SRAM + MCU_SRAM_SIZE;
-
-/* used by the jump code to wipe memory */
-_handoff_clear_ram_0_start = MCU_CCMRAM;
-_handoff_clear_ram_0_end = MCU_CCMRAM + MCU_CCMRAM_SIZE;
-_handoff_clear_ram_1_start = MCU_SRAM;
-_handoff_clear_ram_1_end = MCU_SRAM + MCU_SRAM_SIZE;
-
-/* used by the shutdown code to wipe memory */
-_shutdown_clear_ram_0_start = MCU_CCMRAM;
-_shutdown_clear_ram_0_end = MCU_CCMRAM + MCU_CCMRAM_SIZE;
-_shutdown_clear_ram_1_start = MCU_SRAM;
-_shutdown_clear_ram_1_end = MCU_SRAM + MCU_SRAM_SIZE;
-
-/* reserve 256 bytes for bootloader arguments */
-boot_args_start = ORIGIN(BOOT_ARGS);
-boot_args_end = ORIGIN(BOOT_ARGS) + LENGTH(BOOT_ARGS);
-
 _codelen = SIZEOF(.flash) + SIZEOF(.data);
 
 SECTIONS {

diff --git a/core/embed/sys/linker/stm32f4/kernel.ld b/core/embed/sys/linker/stm32f4/kernel.ld
@@ -33,24 +33,6 @@ _accessible_ram_1_end = MCU_SRAM + MCU_SRAM_SIZE;
 _bootargs_ram_start = BOOTARGS_START;
 _bootargs_ram_end = BOOTARGS_START + BOOTARGS_SIZE;
 
-/* used by the startup code to wipe memory */
-_startup_clear_ram_0_start = MCU_CCMRAM;
-_startup_clear_ram_0_end = MCU_CCMRAM + MCU_CCMRAM_SIZE;
-_startup_clear_ram_1_start = MCU_SRAM;
-_startup_clear_ram_1_end = MCU_SRAM + MCU_SRAM_SIZE;
-
-/* used by the jump code to wipe memory */
-_handoff_clear_ram_0_start = MCU_CCMRAM;
-_handoff_clear_ram_0_end = MCU_CCMRAM + MCU_CCMRAM_SIZE - BOOTARGS_SIZE;
-_handoff_clear_ram_1_start = MCU_SRAM;
-_handoff_clear_ram_1_end = MCU_SRAM + MCU_SRAM_SIZE;
-
-/* used by the shutdown code to wipe memory */
-_shutdown_clear_ram_0_start = MCU_CCMRAM;
-_shutdown_clear_ram_0_end = MCU_CCMRAM + MCU_CCMRAM_SIZE;
-_shutdown_clear_ram_1_start = MCU_SRAM;
-_shutdown_clear_ram_1_end = MCU_SRAM + MCU_SRAM_SIZE;
-
 _codelen = SIZEOF(.vendorheader) + SIZEOF(.header) + SIZEOF(.flash) + SIZEOF(.data) ;
 
 SECTIONS {

diff --git a/core/embed/sys/linker/stm32f4/prodtest.ld b/core/embed/sys/linker/stm32f4/prodtest.ld
@@ -33,28 +33,6 @@ _accessible_ram_1_end = MCU_SRAM + MCU_SRAM_SIZE;
 _bootargs_ram_start = BOOTARGS_START;
 _bootargs_ram_end = BOOTARGS_START + BOOTARGS_SIZE;
 
-/* used by the startup code to wipe memory */
-_startup_clear_ram_0_start = MCU_CCMRAM;
-_startup_clear_ram_0_end = MCU_CCMRAM + MCU_CCMRAM_SIZE;
-_startup_clear_ram_1_start = MCU_SRAM;
-_startup_clear_ram_1_end = MCU_SRAM + MCU_SRAM_SIZE;
-
-/* used by the startup/jump code to wipe memory */
-_handoff_clear_ram_0_start = MCU_CCMRAM;
-_handoff_clear_ram_0_end = MCU_CCMRAM + MCU_CCMRAM_SIZE - BOOTARGS_SIZE;
-_handoff_clear_ram_1_start = MCU_SRAM;
-_handoff_clear_ram_1_end = MCU_SRAM + MCU_SRAM_SIZE;
-
-/* used by the shutdown code to wipe memory */
-_shutdown_clear_ram_0_start = MCU_CCMRAM;
-_shutdown_clear_ram_0_end = MCU_CCMRAM + MCU_CCMRAM_SIZE;
-_shutdown_clear_ram_1_start = MCU_SRAM;
-_shutdown_clear_ram_1_end = MCU_SRAM + MCU_SRAM_SIZE;
-
-/* reserve 256 bytes for bootloader arguments */
-boot_args_start = ORIGIN(BOOT_ARGS);
-boot_args_end = ORIGIN(BOOT_ARGS) + LENGTH(BOOT_ARGS);
-
 _codelen = SIZEOF(.flash) + SIZEOF(.data);
 _flash_start = ORIGIN(FLASH);
 _flash_end = ORIGIN(FLASH) + LENGTH(FLASH);

diff --git a/core/embed/sys/linker/stm32u58/boardloader.ld b/core/embed/sys/linker/stm32u58/boardloader.ld
@@ -36,32 +36,6 @@ _accessible_ram_1_end =  MCU_SRAM4 + MCU_SRAM4_SIZE;
 _bootargs_ram_start = BOOTARGS_START;
 _bootargs_ram_end = BOOTARGS_START + BOOTARGS_SIZE;
 
-/* used by the startup code to wipe memory */
-_startup_clear_ram_0_start = MCU_SRAM1;
-_startup_clear_ram_0_end = MCU_SRAM1 + MCU_SRAM1_SIZE - BOOTARGS_SIZE;
-_startup_clear_ram_1_start = MCU_SRAM2;
-_startup_clear_ram_1_end = MCU_SRAM3 + MCU_SRAM3_SIZE;
-_startup_clear_ram_2_start = MCU_SRAM4;
-_startup_clear_ram_2_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-
-/* used by the jump code to wipe memory */
-_handoff_clear_ram_0_start = MCU_SRAM1;
-_handoff_clear_ram_0_end = MCU_SRAM1 + MCU_SRAM1_SIZE - BOOTARGS_SIZE;
-_handoff_clear_ram_1_start = MCU_SRAM2;
-_handoff_clear_ram_1_end = MCU_SRAM3 + MCU_SRAM3_SIZE;
-_handoff_clear_ram_2_start = MCU_SRAM4;
-_handoff_clear_ram_2_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-
-/* used by the shutdown code to wipe memory */
-_shutdown_clear_ram_0_start = MCU_SRAM1;
-_shutdown_clear_ram_0_end = MCU_SRAM3 + MCU_SRAM3_SIZE;
-_shutdown_clear_ram_1_start = MCU_SRAM4;
-_shutdown_clear_ram_1_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-_shutdown_clear_ram_2_start = 0;
-_shutdown_clear_ram_2_end = 0;
-_shutdown_clear_ram_3_start = 0;
-_shutdown_clear_ram_3_end = 0;
-
 SECTIONS {
   .vector_table : ALIGN(CODE_ALIGNMENT) {
     KEEP(*(.vector_table));

diff --git a/core/embed/sys/linker/stm32u58/bootloader.ld b/core/embed/sys/linker/stm32u58/bootloader.ld
@@ -35,32 +35,6 @@ _accessible_ram_1_end =  MCU_SRAM4 + MCU_SRAM4_SIZE;
 _bootargs_ram_start = BOOTARGS_START;
 _bootargs_ram_end = BOOTARGS_START + BOOTARGS_SIZE;
 
-/* used by the startup code to wipe memory */
-_startup_clear_ram_0_start = MCU_SRAM1;
-_startup_clear_ram_0_end = MCU_SRAM1 + MCU_SRAM1_SIZE - BOOTARGS_SIZE;
-_startup_clear_ram_1_start = MCU_SRAM2;
-_startup_clear_ram_1_end = MCU_SRAM3 + MCU_SRAM3_SIZE;
-_startup_clear_ram_2_start = MCU_SRAM4;
-_startup_clear_ram_2_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-
-/* used by the jump code to wipe memory */
-_handoff_clear_ram_0_start = MCU_SRAM1;
-_handoff_clear_ram_0_end = MCU_SRAM1 + MCU_SRAM1_SIZE;
-_handoff_clear_ram_1_start = MCU_SRAM2;
-_handoff_clear_ram_1_end = MCU_SRAM3 + MCU_SRAM3_SIZE;
-_handoff_clear_ram_2_start = MCU_SRAM4;
-_handoff_clear_ram_2_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-
-/* used by the shutdown code to wipe memory */
-_shutdown_clear_ram_0_start = MCU_SRAM1;
-_shutdown_clear_ram_0_end = MCU_SRAM3 + MCU_SRAM3_SIZE;
-_shutdown_clear_ram_1_start = MCU_SRAM4;
-_shutdown_clear_ram_1_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-_shutdown_clear_ram_2_start = 0;
-_shutdown_clear_ram_2_end = 0;
-_shutdown_clear_ram_3_start = 0;
-_shutdown_clear_ram_3_end = 0;
-
 _codelen = SIZEOF(.flash) + SIZEOF(.data) + SIZEOF(.confidential);
 
 SECTIONS {

diff --git a/core/embed/sys/linker/stm32u58/kernel.ld b/core/embed/sys/linker/stm32u58/kernel.ld
@@ -38,32 +38,6 @@ _accessible_ram_1_end =  MCU_SRAM4 + MCU_SRAM4_SIZE;
 _bootargs_ram_start = BOOTARGS_START;
 _bootargs_ram_end = BOOTARGS_START + BOOTARGS_SIZE;
 
-/* used by the startup code to wipe memory */
-_startup_clear_ram_0_start = MCU_SRAM1;
-_startup_clear_ram_0_end = MCU_SRAM1 + MCU_SRAM1_SIZE;
-_startup_clear_ram_1_start = MCU_SRAM2;
-_startup_clear_ram_1_end = MCU_SRAM3 + MCU_SRAM3_SIZE;
-_startup_clear_ram_2_start = MCU_SRAM4;
-_startup_clear_ram_2_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-
-/* used by the jump code to wipe memory */
-_handoff_clear_ram_0_start = MCU_SRAM1;
-_handoff_clear_ram_0_end = MCU_SRAM1 + MCU_SRAM1_SIZE - 512;
-_handoff_clear_ram_1_start = MCU_SRAM2;
-_handoff_clear_ram_1_end = MCU_SRAM3 + MCU_SRAM3_SIZE;
-_handoff_clear_ram_2_start = MCU_SRAM4;
-_handoff_clear_ram_2_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-
-/* used by the shutdown code to wipe memory */
-_shutdown_clear_ram_0_start = MCU_SRAM1;
-_shutdown_clear_ram_0_end = MCU_SRAM3 + MCU_SRAM3_SIZE;
-_shutdown_clear_ram_1_start = MCU_SRAM4;
-_shutdown_clear_ram_1_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-_shutdown_clear_ram_2_start = 0;
-_shutdown_clear_ram_2_end = 0;
-_shutdown_clear_ram_3_start = 0;
-_shutdown_clear_ram_3_end = 0;
-
 _codelen = SIZEOF(.vendorheader) + SIZEOF(.header) + SIZEOF(.flash)  + SIZEOF(.uflash) + SIZEOF(.data) + SIZEOF(.confidential);
 _flash_start = ORIGIN(FLASH);
 _flash_end = ORIGIN(FLASH) + LENGTH(FLASH);

diff --git a/core/embed/sys/linker/stm32u58/prodtest.ld b/core/embed/sys/linker/stm32u58/prodtest.ld
@@ -35,32 +35,6 @@ _accessible_ram_1_end =  MCU_SRAM4 + MCU_SRAM4_SIZE;
 _bootargs_ram_start = BOOTARGS_START;
 _bootargs_ram_end = BOOTARGS_START + BOOTARGS_SIZE;
 
-/* used by the startup code to wipe memory */
-_startup_clear_ram_0_start = MCU_SRAM1;
-_startup_clear_ram_0_end = MCU_SRAM1 + MCU_SRAM1_SIZE;
-_startup_clear_ram_1_start = MCU_SRAM2;
-_startup_clear_ram_1_end = MCU_SRAM3 + MCU_SRAM3_SIZE;
-_startup_clear_ram_2_start = MCU_SRAM4;
-_startup_clear_ram_2_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-
-/* used by the jump code to wipe memory */
-_handoff_clear_ram_0_start = MCU_SRAM1;
-_handoff_clear_ram_0_end = MCU_SRAM1 + MCU_SRAM1_SIZE - BOOTARGS_SIZE;
-_handoff_clear_ram_1_start = MCU_SRAM2;
-_handoff_clear_ram_1_end = MCU_SRAM3 + MCU_SRAM3_SIZE;
-_handoff_clear_ram_2_start = MCU_SRAM4;
-_handoff_clear_ram_2_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-
-/* used by the shutdown code to wipe memory */
-_shutdown_clear_ram_0_start = MCU_SRAM1;
-_shutdown_clear_ram_0_end = MCU_SRAM3 + MCU_SRAM3_SIZE;
-_shutdown_clear_ram_1_start = MCU_SRAM4;
-_shutdown_clear_ram_1_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-_shutdown_clear_ram_2_start = 0;
-_shutdown_clear_ram_2_end = 0;
-_shutdown_clear_ram_3_start = 0;
-_shutdown_clear_ram_3_end = 0;
-
 _codelen = SIZEOF(.flash) + SIZEOF(.data) + SIZEOF(.confidential);
 _flash_start = ORIGIN(FLASH);
 _flash_end = ORIGIN(FLASH) + LENGTH(FLASH);

diff --git a/core/embed/sys/linker/stm32u5g/boardloader.ld b/core/embed/sys/linker/stm32u5g/boardloader.ld
@@ -36,31 +36,6 @@ _accessible_ram_1_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
 _bootargs_ram_start = BOOTARGS_START;
 _bootargs_ram_end = BOOTARGS_START + BOOTARGS_SIZE;
 
-/* used by the startup code to wipe memory */
-_startup_clear_ram_0_start = MCU_SRAM1 + BOOTARGS_SIZE;
-_startup_clear_ram_0_end = MCU_SRAM1 + MCU_SRAM1_SIZE;
-_startup_clear_ram_1_start = MCU_SRAM2;
-_startup_clear_ram_1_end = MCU_SRAM6 + MCU_SRAM6_SIZE;
-_startup_clear_ram_2_start = MCU_SRAM4;
-_startup_clear_ram_2_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-
-/* used by the jump code to wipe memory */
-_handoff_clear_ram_0_start = MCU_SRAM1 + BOOTARGS_SIZE;
-_handoff_clear_ram_0_end = MCU_SRAM1 + MCU_SRAM1_SIZE;
-_handoff_clear_ram_1_start = MCU_SRAM2;
-_handoff_clear_ram_1_end = MCU_SRAM6 + MCU_SRAM6_SIZE;
-_handoff_clear_ram_2_start = MCU_SRAM4;
-_handoff_clear_ram_2_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-
-/* used by the shutdown code to wipe memory */
-_shutdown_clear_ram_0_start = MCU_SRAM1;
-_shutdown_clear_ram_0_end = ADDR(.fb1);
-_shutdown_clear_ram_1_start = ADDR(.fb1) + SIZEOF(.fb1);
-_shutdown_clear_ram_1_end = ADDR(.fb2);
-_shutdown_clear_ram_2_start = ADDR(.fb2) + SIZEOF(.fb2);
-_shutdown_clear_ram_2_end = MCU_SRAM6 + MCU_SRAM6_SIZE;
-_shutdown_clear_ram_3_start = MCU_SRAM4;
-_shutdown_clear_ram_3_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
 
 SECTIONS {
   .vector_table : ALIGN(CODE_ALIGNMENT) {

diff --git a/core/embed/sys/linker/stm32u5g/bootloader.ld b/core/embed/sys/linker/stm32u5g/bootloader.ld
@@ -35,32 +35,6 @@ _accessible_ram_1_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
 _bootargs_ram_start = BOOTARGS_START;
 _bootargs_ram_end = BOOTARGS_START + BOOTARGS_SIZE;
 
-/* used by the startup code to wipe memory */
-_startup_clear_ram_0_start = MCU_SRAM1 + BOOTARGS_SIZE;
-_startup_clear_ram_0_end = MCU_SRAM1 + MCU_SRAM1_SIZE;
-_startup_clear_ram_1_start = MCU_SRAM2;
-_startup_clear_ram_1_end = MCU_SRAM6 + MCU_SRAM6_SIZE;
-_startup_clear_ram_2_start = MCU_SRAM4;
-_startup_clear_ram_2_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-
-/* used by the jump code to wipe memory */
-_handoff_clear_ram_0_start = MCU_SRAM1;
-_handoff_clear_ram_0_end = MCU_SRAM1 + MCU_SRAM1_SIZE;
-_handoff_clear_ram_1_start = MCU_SRAM2;
-_handoff_clear_ram_1_end = MCU_SRAM6 + MCU_SRAM6_SIZE;
-_handoff_clear_ram_2_start = MCU_SRAM4;
-_handoff_clear_ram_2_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-
-/* used by the shutdown code to wipe memory */
-_shutdown_clear_ram_0_start = MCU_SRAM1;
-_shutdown_clear_ram_0_end = ADDR(.fb1);
-_shutdown_clear_ram_1_start = ADDR(.fb1) + SIZEOF(.fb1);
-_shutdown_clear_ram_1_end = ADDR(.fb2);
-_shutdown_clear_ram_2_start = ADDR(.fb2) + SIZEOF(.fb2);
-_shutdown_clear_ram_2_end = MCU_SRAM6 + MCU_SRAM6_SIZE;
-_shutdown_clear_ram_3_start = MCU_SRAM4;
-_shutdown_clear_ram_3_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-
 _codelen = SIZEOF(.flash) + SIZEOF(.data) + SIZEOF(.confidential);
 
 SECTIONS {

diff --git a/core/embed/sys/linker/stm32u5g/kernel.ld b/core/embed/sys/linker/stm32u5g/kernel.ld
@@ -39,32 +39,6 @@ _accessible_ram_1_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
 _bootargs_ram_start = BOOTARGS_START;
 _bootargs_ram_end = BOOTARGS_START + BOOTARGS_SIZE;
 
-/* used by the startup code to wipe memory */
-_startup_clear_ram_0_start = MCU_SRAM1;
-_startup_clear_ram_0_end = MCU_SRAM1 + MCU_SRAM1_SIZE;
-_startup_clear_ram_1_start = MCU_SRAM2;
-_startup_clear_ram_1_end = MCU_SRAM6 + MCU_SRAM6_SIZE;
-_startup_clear_ram_2_start = MCU_SRAM4;
-_startup_clear_ram_2_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-
-/* used by the jump code to wipe memory */
-_handoff_clear_ram_0_start = MCU_SRAM1 + BOOTARGS_SIZE;
-_handoff_clear_ram_0_end = MCU_SRAM1 + MCU_SRAM1_SIZE;
-_handoff_clear_ram_1_start = MCU_SRAM2;
-_handoff_clear_ram_1_end = MCU_SRAM6 + MCU_SRAM6_SIZE;
-_handoff_clear_ram_2_start = MCU_SRAM4;
-_handoff_clear_ram_2_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-
-/* used by the shutdown code to wipe memory */
-_shutdown_clear_ram_0_start = MCU_SRAM1;
-_shutdown_clear_ram_0_end = ADDR(.fb1);
-_shutdown_clear_ram_1_start = ADDR(.fb1) + SIZEOF(.fb1);
-_shutdown_clear_ram_1_end = ADDR(.fb2);
-_shutdown_clear_ram_2_start = ADDR(.fb2) + SIZEOF(.fb2);
-_shutdown_clear_ram_2_end = MCU_SRAM6 + MCU_SRAM6_SIZE;
-_shutdown_clear_ram_3_start = MCU_SRAM4;
-_shutdown_clear_ram_3_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-
 _codelen = SIZEOF(.vendorheader) + SIZEOF(.header) + SIZEOF(.flash)  + SIZEOF(.uflash) + SIZEOF(.data) + SIZEOF(.confidential);
 _flash_start = ORIGIN(FLASH);
 _flash_end = ORIGIN(FLASH) + LENGTH(FLASH);

diff --git a/core/embed/sys/linker/stm32u5g/prodtest.ld b/core/embed/sys/linker/stm32u5g/prodtest.ld
@@ -35,33 +35,6 @@ _accessible_ram_1_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
 _bootargs_ram_start = BOOTARGS_START;
 _bootargs_ram_end = BOOTARGS_START + BOOTARGS_SIZE;
 
-/* used by the startup code to wipe memory */
-_startup_clear_ram_0_start = MCU_SRAM1;
-_startup_clear_ram_0_end = MCU_SRAM1 + MCU_SRAM1_SIZE;
-_startup_clear_ram_1_start = MCU_SRAM2;
-_startup_clear_ram_1_end = MCU_SRAM6 + MCU_SRAM6_SIZE;
-_startup_clear_ram_2_start = MCU_SRAM4;
-_startup_clear_ram_2_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-
-/* used by the jump code to wipe memory */
-_handoff_clear_ram_0_start = MCU_SRAM1 + BOOTARGS_SIZE;
-_handoff_clear_ram_0_end = MCU_SRAM1 + MCU_SRAM1_SIZE;
-_handoff_clear_ram_1_start = MCU_SRAM2;
-_handoff_clear_ram_1_end = MCU_SRAM6 + MCU_SRAM6_SIZE;
-_handoff_clear_ram_2_start = MCU_SRAM4;
-_handoff_clear_ram_2_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-
-/* used by the shutdown code to wipe memory */
-_shutdown_clear_ram_0_start = MCU_SRAM1;
-_shutdown_clear_ram_0_end = ADDR(.fb1);
-_shutdown_clear_ram_1_start = ADDR(.fb1) + SIZEOF(.fb1);
-_shutdown_clear_ram_1_end = ADDR(.fb2);
-_shutdown_clear_ram_2_start = ADDR(.fb2) + SIZEOF(.fb2);
-_shutdown_clear_ram_2_end = MCU_SRAM6 + MCU_SRAM6_SIZE;
-_shutdown_clear_ram_3_start = MCU_SRAM4;
-_shutdown_clear_ram_3_end = MCU_SRAM4 + MCU_SRAM4_SIZE;
-
-
 _codelen = SIZEOF(.flash) + SIZEOF(.data) + SIZEOF(.confidential);
 _flash_start = ORIGIN(FLASH);
 _flash_end = ORIGIN(FLASH) + LENGTH(FLASH);