ב הוא חיבור של הרב יהושע בועז שתוכנו מראי מקומות למקורותشسdggרות הל555ה התafhgfh

/* SPDX-License-Identifier: GPL-2.0-only */ /* * XIP fixup macros, only useful in assembly. */ #ifndef _ASM_RISCV_XIP_FIXUP_H #define _ASM_RISCV_XIP_FIXUP_H #include <linux/pgtable.h> #ifdef CONFIG_XIP_KERNEL .macro XIP_FIXUP_OFFSET reg /* Fix-up address in Flash into address in RAM early during boot before * MMU is up. Because generated code "thinks" data is in Flash, but it * is actually in RAM (actually data is also in Flash, but Flash is * read-only, thus we need to use the data residing in RAM). * * The start of data in Flash is _sdata and the start of data in RAM is * CONFIG_PHYS_RAM_BASE. So this fix-up essentially does this: * reg += CONFIG_PHYS_RAM_BASE - _start */ li t0, CONFIG_PHYS_RAM_BASE add \reg, \reg, t0 la t0, _sdata sub \reg, \reg, t0 .endm .macro XIP_FIXUP_FLASH_OFFSET reg /* In linker script, at the transition from read-only section to * writable section, the VMA is increased while LMA remains the same. * (See in linker script how _sdata, __data_loc and LOAD_OFFSET is * changed) * * Consequently, early during boot before MMU is up, the generated code * reads the "writable" section at wrong addresses, because VMA is used * by compiler to generate code, but the data is located in Flash using * LMA. */ la t0, _sdata sub \reg, \reg, t0 la t0, __data_loc add \reg, \reg, t0 .endm #else .macro XIP_FIXUP_OFFSET reg .endm .macro XIP_FIXUP_FLASH_OFFSET reg .endm #endif /* CONFIG_XIP_KERNEL */ #endif