Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Yinghai Lu | 8fee13a4 | 2010-08-02 16:21:22 -0700 | [diff] [blame] | 2 | #include "misc.h" |
| 3 | |
Kees Cook | 8ab3820 | 2013-10-10 17:18:14 -0700 | [diff] [blame] | 4 | #if CONFIG_EARLY_PRINTK || CONFIG_RANDOMIZE_BASE |
Gokul Caushik | bd448d4 | 2012-07-19 18:04:42 -0700 | [diff] [blame] | 5 | |
Yinghai Lu | 8fee13a4 | 2010-08-02 16:21:22 -0700 | [diff] [blame] | 6 | static unsigned long fs; |
| 7 | static inline void set_fs(unsigned long seg) |
| 8 | { |
| 9 | fs = seg << 4; /* shift it back */ |
| 10 | } |
| 11 | typedef unsigned long addr_t; |
| 12 | static inline char rdfs8(addr_t addr) |
| 13 | { |
| 14 | return *((char *)(fs + addr)); |
| 15 | } |
| 16 | #include "../cmdline.c" |
Baoquan He | d52e7d5 | 2017-05-13 13:46:28 +0800 | [diff] [blame] | 17 | unsigned long get_cmd_line_ptr(void) |
Yinghai Lu | f1da834 | 2013-01-24 12:19:57 -0800 | [diff] [blame] | 18 | { |
Kees Cook | 6655e0a | 2016-04-18 09:42:12 -0700 | [diff] [blame] | 19 | unsigned long cmd_line_ptr = boot_params->hdr.cmd_line_ptr; |
Yinghai Lu | f1da834 | 2013-01-24 12:19:57 -0800 | [diff] [blame] | 20 | |
Kees Cook | 6655e0a | 2016-04-18 09:42:12 -0700 | [diff] [blame] | 21 | cmd_line_ptr |= (u64)boot_params->ext_cmd_line_ptr << 32; |
Yinghai Lu | ee92d81 | 2013-01-28 20:16:44 -0800 | [diff] [blame] | 22 | |
Yinghai Lu | f1da834 | 2013-01-24 12:19:57 -0800 | [diff] [blame] | 23 | return cmd_line_ptr; |
| 24 | } |
Yinghai Lu | 8fee13a4 | 2010-08-02 16:21:22 -0700 | [diff] [blame] | 25 | int cmdline_find_option(const char *option, char *buffer, int bufsize) |
| 26 | { |
Yinghai Lu | f1da834 | 2013-01-24 12:19:57 -0800 | [diff] [blame] | 27 | return __cmdline_find_option(get_cmd_line_ptr(), option, buffer, bufsize); |
Yinghai Lu | 8fee13a4 | 2010-08-02 16:21:22 -0700 | [diff] [blame] | 28 | } |
| 29 | int cmdline_find_option_bool(const char *option) |
| 30 | { |
Yinghai Lu | f1da834 | 2013-01-24 12:19:57 -0800 | [diff] [blame] | 31 | return __cmdline_find_option_bool(get_cmd_line_ptr(), option); |
Yinghai Lu | 8fee13a4 | 2010-08-02 16:21:22 -0700 | [diff] [blame] | 32 | } |
Gokul Caushik | bd448d4 | 2012-07-19 18:04:42 -0700 | [diff] [blame] | 33 | |
| 34 | #endif |