6ca84e3c9a
Due to a change in linker script cortex_a_r/scripts/linker.ld , the _image_ram_start has been changed so the Zephyr image cannot be copied from flash to ram as expected and cannot run properly. It is replaced by CONFIG_SRAM_BASE_ADDRESS, the _image_ram_size is also replaced by _flash_used as a preventive measure. Signed-off-by: Nhut Nguyen <nhut.nguyen.kc@renesas.com>
41 lines
920 B
ArmAsm
41 lines
920 B
ArmAsm
/*
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* Copyright (c) 2025 Renesas Electronics Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/devicetree.h>
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#include <zephyr/linker/sections.h>
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/* Require CONFIG_XIP=n */
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#define ROM_START (CONFIG_FLASH_BASE_ADDRESS + DT_REG_ADDR(DT_CHOSEN(zephyr_code_partition)))
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#define RAM_START CONFIG_SRAM_BASE_ADDRESS
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#define APP_SIZE _flash_used
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_ASM_FILE_PROLOGUE
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GTEXT(loader_program)
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/*
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* Loader program
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*/
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SECTION_FUNC(loader_text, loader_program)
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ldr r0, =ROM_START // Src in ROM
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ldr r1, =RAM_START // Des in RAM
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ldr r2, =APP_SIZE
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cmp r2, #0
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beq exit
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loop:
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ldrb r3, [r0], #1 // Load byte from src and increment src pointer
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strb r3, [r1], #1 // Store byte to des and increment des pointer
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subs r2, r2, #1 // Decrement size and updates the condition flags
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bne loop // If size is not 0, repeat loop
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done:
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dsb sy
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ldr pc, =__start
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exit:
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wfi
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