2 * PS3 flash memory os area.
4 * Copyright (C) 2006 Sony Computer Entertainment Inc.
5 * Copyright 2006 Sony Corp.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; version 2 of the License.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include <linux/kernel.h>
29 OS_AREA_SEGMENT_SIZE = 0X200,
32 enum os_area_ldr_format {
33 HEADER_LDR_FORMAT_RAW = 0,
34 HEADER_LDR_FORMAT_GZIP = 1,
38 * struct os_area_header - os area header segment.
39 * @magic_num: Always 'cell_ext_os_area'.
40 * @hdr_version: Header format version number.
41 * @os_area_offset: Starting segment number of os image area.
42 * @ldr_area_offset: Starting segment number of bootloader image area.
43 * @ldr_format: HEADER_LDR_FORMAT flag.
44 * @ldr_size: Size of bootloader image in bytes.
46 * Note that the docs refer to area offsets. These are offsets in units of
47 * segments from the start of the os area (top of the header). These are
48 * better thought of as segment numbers. The os area of the os area is
49 * reserved for the os image.
52 struct os_area_header {
63 enum os_area_boot_flag {
64 PARAM_BOOT_FLAG_GAME_OS = 0,
65 PARAM_BOOT_FLAG_OTHER_OS = 1,
68 enum os_area_ctrl_button {
69 PARAM_CTRL_BUTTON_O_IS_YES = 0,
70 PARAM_CTRL_BUTTON_X_IS_YES = 1,
74 * struct os_area_params - os area params segment.
75 * @boot_flag: User preference of operating system, PARAM_BOOT_FLAG flag.
76 * @num_params: Number of params in this (params) segment.
77 * @rtc_diff: Difference in seconds between 1970 and the ps3 rtc value.
78 * @av_multi_out: User preference of AV output, PARAM_AV_MULTI_OUT flag.
79 * @ctrl_button: User preference of controller button config, PARAM_CTRL_BUTTON
81 * @static_ip_addr: User preference of static IP address.
82 * @network_mask: User preference of static network mask.
83 * @default_gateway: User preference of static default gateway.
84 * @dns_primary: User preference of static primary dns server.
85 * @dns_secondary: User preference of static secondary dns server.
87 * The ps3 rtc maintains a read-only value that approximates seconds since
88 * 2000-01-01 00:00:00 UTC.
90 * User preference of zero for static_ip_addr means use dhcp.
93 struct os_area_params {
104 u8 static_ip_addr[4];
106 u8 default_gateway[4];
114 #define SECONDS_FROM_1970_TO_2000 946684800LL
117 * struct saved_params - Static working copies of data from the 'Other OS' area.
119 * For the convinience of the guest, the HV makes a copy of the 'Other OS' area
120 * in flash to a high address in the boot memory region and then puts that RAM
121 * address and the byte count into the repository for retreval by the guest.
122 * We copy the data we want into a static variable and allow the memory setup
123 * by the HV to be claimed by the lmb manager.
126 struct saved_params {
129 unsigned int av_multi_out;
130 unsigned int ctrl_button;
132 u8 static_ip_addr[4];
134 u8 default_gateway[4];
138 } static saved_params;
140 #define dump_header(_a) _dump_header(_a, __func__, __LINE__)
141 static void _dump_header(const struct os_area_header *h, const char *func,
144 pr_debug("%s:%d: h.magic_num: '%s'\n", func, line,
146 pr_debug("%s:%d: h.hdr_version: %u\n", func, line,
148 pr_debug("%s:%d: h.os_area_offset: %u\n", func, line,
150 pr_debug("%s:%d: h.ldr_area_offset: %u\n", func, line,
152 pr_debug("%s:%d: h.ldr_format: %u\n", func, line,
154 pr_debug("%s:%d: h.ldr_size: %xh\n", func, line,
158 #define dump_params(_a) _dump_params(_a, __func__, __LINE__)
159 static void _dump_params(const struct os_area_params *p, const char *func,
162 pr_debug("%s:%d: p.boot_flag: %u\n", func, line, p->boot_flag);
163 pr_debug("%s:%d: p.num_params: %u\n", func, line, p->num_params);
164 pr_debug("%s:%d: p.rtc_diff %ld\n", func, line, p->rtc_diff);
165 pr_debug("%s:%d: p.av_multi_out %u\n", func, line, p->av_multi_out);
166 pr_debug("%s:%d: p.ctrl_button: %u\n", func, line, p->ctrl_button);
167 pr_debug("%s:%d: p.static_ip_addr: %u.%u.%u.%u\n", func, line,
168 p->static_ip_addr[0], p->static_ip_addr[1],
169 p->static_ip_addr[2], p->static_ip_addr[3]);
170 pr_debug("%s:%d: p.network_mask: %u.%u.%u.%u\n", func, line,
171 p->network_mask[0], p->network_mask[1],
172 p->network_mask[2], p->network_mask[3]);
173 pr_debug("%s:%d: p.default_gateway: %u.%u.%u.%u\n", func, line,
174 p->default_gateway[0], p->default_gateway[1],
175 p->default_gateway[2], p->default_gateway[3]);
176 pr_debug("%s:%d: p.dns_primary: %u.%u.%u.%u\n", func, line,
177 p->dns_primary[0], p->dns_primary[1],
178 p->dns_primary[2], p->dns_primary[3]);
179 pr_debug("%s:%d: p.dns_secondary: %u.%u.%u.%u\n", func, line,
180 p->dns_secondary[0], p->dns_secondary[1],
181 p->dns_secondary[2], p->dns_secondary[3]);
184 static int __init verify_header(const struct os_area_header *header)
186 if (memcmp(header->magic_num, "cell_ext_os_area", 16)) {
187 pr_debug("%s:%d magic_num failed\n", __func__, __LINE__);
191 if (header->hdr_version < 1) {
192 pr_debug("%s:%d hdr_version failed\n", __func__, __LINE__);
196 if (header->os_area_offset > header->ldr_area_offset) {
197 pr_debug("%s:%d offsets failed\n", __func__, __LINE__);
204 int __init ps3_os_area_init(void)
209 struct os_area_header *header;
210 struct os_area_params *params;
212 result = ps3_repository_read_boot_dat_info(&lpar_addr, &size);
215 pr_debug("%s:%d ps3_repository_read_boot_dat_info failed\n",
220 header = (struct os_area_header *)__va(lpar_addr);
221 params = (struct os_area_params *)__va(lpar_addr
222 + OS_AREA_SEGMENT_SIZE);
224 result = verify_header(header);
227 pr_debug("%s:%d verify_header failed\n", __func__, __LINE__);
235 saved_params.rtc_diff = params->rtc_diff;
236 saved_params.av_multi_out = params->av_multi_out;
237 saved_params.ctrl_button = params->ctrl_button;
238 memcpy(saved_params.static_ip_addr, params->static_ip_addr, 4);
239 memcpy(saved_params.network_mask, params->network_mask, 4);
240 memcpy(saved_params.default_gateway, params->default_gateway, 4);
241 memcpy(saved_params.dns_secondary, params->dns_secondary, 4);
247 * ps3_os_area_rtc_diff - Returns the rtc diff value.
250 u64 ps3_os_area_rtc_diff(void)
252 return saved_params.rtc_diff ? saved_params.rtc_diff
253 : SECONDS_FROM_1970_TO_2000;
257 * ps3_os_area_get_av_multi_out - Returns the default video mode.
260 enum ps3_param_av_multi_out ps3_os_area_get_av_multi_out(void)
262 return saved_params.av_multi_out;
264 EXPORT_SYMBOL_GPL(ps3_os_area_get_av_multi_out);