函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\include\asm\bootparam_utils.h Create Date:2022-07-27 08:27:32
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：启动参数检查

函数原型：static void sanitize_boot_params(struct boot_params *boot_params)

返回类型：void

参数：

类型参数名称
struct boot_params *boot_params
51  如果0x1ef 则
53  bp_base等于boot_params
54  char * save_base = (char * ) & scratch
57  const struct boot_params_to_save to_save[] = {BOOT_PARAM_PRESERVE(screen_info), BOOT_PARAM_PRESERVE(apm_bios_info), BOOT_PARAM_PRESERVE(tboot_addr), BOOT_PARAM_PRESERVE(ist_info), BOOT_PARAM_PRESERVE(hd0_info), BOOT_PARAM_PRESERVE(hd1_info), BOOT_PARAM_PRESERVE(sys_desc_table), BOOT_PARAM_PRESERVE(olpc_ofw_header), BOOT_PARAM_PRESERVE(efi_info), BOOT_PARAM_PRESERVE(alt_mem_k), BOOT_PARAM_PRESERVE(scratch), BOOT_PARAM_PRESERVE(e820_entries), BOOT_PARAM_PRESERVE(eddbuf_entries), BOOT_PARAM_PRESERVE(edd_mbr_sig_buf_entries), BOOT_PARAM_PRESERVE(edd_mbr_sig_buffer), BOOT_PARAM_PRESERVE(secure_boot), BOOT_PARAM_PRESERVE(hdr), BOOT_PARAM_PRESERVE(e820_table), BOOT_PARAM_PRESERVE(eddbuf), }
79  memset( & scratch, 0, scratch的长度)
81  以i小于ARRAY_SIZE - get the number of elements in array @arr*@arr: array to be sized(to_save)循环
82  memcpy(save_base + start, bp_base + start, len)
86  memcpy(boot_params, save_base, boot_params的长度)
调用者
名称描述
i386_start_kernel平台相关内核启动(head_32.S调用)