arch/x86/boot/compressed/cmdline.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include "misc.h"
   3
   4 static unsigned long fs;
   5 static inline void set_fs(unsigned long seg)
   6 {
   7         fs = seg << 4;  /* shift it back */
   8 }
   9 typedef unsigned long addr_t;
  10 static inline char rdfs8(addr_t addr)
  11 {
  12         return *((char *)(fs + addr));
  13 }
  14 #include "../cmdline.c"
  15 unsigned long get_cmd_line_ptr(void)
  16 {
  17         unsigned long cmd_line_ptr = boot_params->hdr.cmd_line_ptr;
  18
  19         cmd_line_ptr |= (u64)boot_params->ext_cmd_line_ptr << 32;
  20
  21         return cmd_line_ptr;
  22 }
  23 int cmdline_find_option(const char *option, char *buffer, int bufsize)
  24 {
  25         return __cmdline_find_option(get_cmd_line_ptr(), option, buffer, bufsize);
  26 }
  27 int cmdline_find_option_bool(const char *option)
  28 {
  29         return __cmdline_find_option_bool(get_cmd_line_ptr(), option);
  30 }