1 /* 2 * Copyright (C) 2010 Marco Stornelli <marco.stornelli@gmail.com> 3 * Copyright (C) 2011 Kees Cook <keescook@chromium.org> 4 * Copyright (C) 2011 Google, Inc. 5 * 6 * This software is licensed under the terms of the GNU General Public 7 * License version 2, as published by the Free Software Foundation, and 8 * may be copied, distributed, and modified under those terms. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 */ 16 17 #ifndef __LINUX_PSTORE_RAM_H__ 18 #define __LINUX_PSTORE_RAM_H__ 19 20 #include <linux/device.h> 21 #include <linux/kernel.h> 22 #include <linux/list.h> 23 #include <linux/types.h> 24 #include <linux/init.h> 25 26 struct persistent_ram_buffer; 27 struct rs_control; 28 29 struct persistent_ram_ecc_info { 30 int block_size; 31 int ecc_size; 32 int symsize; 33 int poly; 34 }; 35 36 struct persistent_ram_zone { 37 phys_addr_t paddr; 38 size_t size; 39 void *vaddr; 40 struct persistent_ram_buffer *buffer; 41 size_t buffer_size; 42 43 /* ECC correction */ 44 char *par_buffer; 45 char *par_header; 46 struct rs_control *rs_decoder; 47 int corrected_bytes; 48 int bad_blocks; 49 struct persistent_ram_ecc_info ecc_info; 50 51 char *old_log; 52 size_t old_log_size; 53 }; 54 55 struct persistent_ram_zone *persistent_ram_new(phys_addr_t start, size_t size, 56 u32 sig, struct persistent_ram_ecc_info *ecc_info, 57 unsigned int memtype); 58 void persistent_ram_free(struct persistent_ram_zone *prz); 59 void persistent_ram_zap(struct persistent_ram_zone *prz); 60 61 int persistent_ram_write(struct persistent_ram_zone *prz, const void *s, 62 unsigned int count); 63 64 void persistent_ram_save_old(struct persistent_ram_zone *prz); 65 size_t persistent_ram_old_size(struct persistent_ram_zone *prz); 66 void *persistent_ram_old(struct persistent_ram_zone *prz); 67 void persistent_ram_free_old(struct persistent_ram_zone *prz); 68 ssize_t persistent_ram_ecc_string(struct persistent_ram_zone *prz, 69 char *str, size_t len); 70 71 /* 72 * Ramoops platform data 73 * @mem_size memory size for ramoops 74 * @mem_address physical memory address to contain ramoops 75 */ 76 77 struct ramoops_platform_data { 78 unsigned long mem_size; 79 unsigned long mem_address; 80 unsigned int mem_type; 81 unsigned long record_size; 82 unsigned long console_size; 83 unsigned long ftrace_size; 84 unsigned long pmsg_size; 85 int dump_oops; 86 struct persistent_ram_ecc_info ecc_info; 87 }; 88 89 #endif 90