2 * PS3 'Other OS' area data.
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>
30 OS_AREA_SEGMENT_SIZE = 0X200,
34 HEADER_LDR_FORMAT_RAW = 0,
35 HEADER_LDR_FORMAT_GZIP = 1,
39 * struct os_area_header - os area header segment.
40 * @magic_num: Always 'cell_ext_os_area'.
41 * @hdr_version: Header format version number.
42 * @os_area_offset: Starting segment number of os image area.
43 * @ldr_area_offset: Starting segment number of bootloader image area.
44 * @ldr_format: HEADER_LDR_FORMAT flag.
45 * @ldr_size: Size of bootloader image in bytes.
47 * Note that the docs refer to area offsets. These are offsets in units of
48 * segments from the start of the os area (top of the header). These are
49 * better thought of as segment numbers. The os area of the os area is
50 * reserved for the os image.
53 struct os_area_header {
65 PARAM_BOOT_FLAG_GAME_OS = 0,
66 PARAM_BOOT_FLAG_OTHER_OS = 1,
70 PARAM_CTRL_BUTTON_O_IS_YES = 0,
71 PARAM_CTRL_BUTTON_X_IS_YES = 1,
75 * struct os_area_params - os area params segment.
76 * @boot_flag: User preference of operating system, PARAM_BOOT_FLAG flag.
77 * @num_params: Number of params in this (params) segment.
78 * @rtc_diff: Difference in seconds between 1970 and the ps3 rtc value.
79 * @av_multi_out: User preference of AV output, PARAM_AV_MULTI_OUT flag.
80 * @ctrl_button: User preference of controller button config, PARAM_CTRL_BUTTON
82 * @static_ip_addr: User preference of static IP address.
83 * @network_mask: User preference of static network mask.
84 * @default_gateway: User preference of static default gateway.
85 * @dns_primary: User preference of static primary dns server.
86 * @dns_secondary: User preference of static secondary dns server.
88 * User preference of zero for static_ip_addr means use dhcp.
91 struct os_area_params {
102 u8 static_ip_addr[4];
104 u8 default_gateway[4];
113 * struct saved_params - Static working copies of data from the 'Other OS' area.
115 * For the convinience of the guest, the HV makes a copy of the 'Other OS' area
116 * in flash to a high address in the boot memory region and then puts that RAM
117 * address and the byte count into the repository for retreval by the guest.
118 * We copy the data we want into a static variable and allow the memory setup
119 * by the HV to be claimed by the lmb manager.
122 struct saved_params {
125 unsigned int av_multi_out;
126 unsigned int ctrl_button;
128 u8 static_ip_addr[4];
130 u8 default_gateway[4];
134 } static saved_params;
136 #define dump_header(_a) _dump_header(_a, __func__, __LINE__)
137 static void _dump_header(const struct os_area_header __iomem *h, const char* func,
140 pr_debug("%s:%d: h.magic_num: '%s'\n", func, line,
142 pr_debug("%s:%d: h.hdr_version: %u\n", func, line,
144 pr_debug("%s:%d: h.os_area_offset: %u\n", func, line,
146 pr_debug("%s:%d: h.ldr_area_offset: %u\n", func, line,
148 pr_debug("%s:%d: h.ldr_format: %u\n", func, line,
150 pr_debug("%s:%d: h.ldr_size: %xh\n", func, line,
154 #define dump_params(_a) _dump_params(_a, __func__, __LINE__)
155 static void _dump_params(const struct os_area_params __iomem *p, const char* func,
158 pr_debug("%s:%d: p.boot_flag: %u\n", func, line, p->boot_flag);
159 pr_debug("%s:%d: p.num_params: %u\n", func, line, p->num_params);
160 pr_debug("%s:%d: p.rtc_diff %ld\n", func, line, p->rtc_diff);
161 pr_debug("%s:%d: p.av_multi_out %u\n", func, line, p->av_multi_out);
162 pr_debug("%s:%d: p.ctrl_button: %u\n", func, line, p->ctrl_button);
163 pr_debug("%s:%d: p.static_ip_addr: %u.%u.%u.%u\n", func, line,
164 p->static_ip_addr[0], p->static_ip_addr[1],
165 p->static_ip_addr[2], p->static_ip_addr[3]);
166 pr_debug("%s:%d: p.network_mask: %u.%u.%u.%u\n", func, line,
167 p->network_mask[0], p->network_mask[1],
168 p->network_mask[2], p->network_mask[3]);
169 pr_debug("%s:%d: p.default_gateway: %u.%u.%u.%u\n", func, line,
170 p->default_gateway[0], p->default_gateway[1],
171 p->default_gateway[2], p->default_gateway[3]);
172 pr_debug("%s:%d: p.dns_primary: %u.%u.%u.%u\n", func, line,
173 p->dns_primary[0], p->dns_primary[1],
174 p->dns_primary[2], p->dns_primary[3]);
175 pr_debug("%s:%d: p.dns_secondary: %u.%u.%u.%u\n", func, line,
176 p->dns_secondary[0], p->dns_secondary[1],
177 p->dns_secondary[2], p->dns_secondary[3]);
180 static int __init verify_header(const struct os_area_header *header)
182 if (memcmp(header->magic_num, "cell_ext_os_area", 16)) {
183 pr_debug("%s:%d magic_num failed\n", __func__, __LINE__);
187 if (header->hdr_version < 1) {
188 pr_debug("%s:%d hdr_version failed\n", __func__, __LINE__);
192 if (header->os_area_offset > header->ldr_area_offset) {
193 pr_debug("%s:%d offsets failed\n", __func__, __LINE__);
200 int __init ps3_os_area_init(void)
205 struct os_area_header *header;
206 struct os_area_params *params;
208 result = ps3_repository_read_boot_dat_info(&lpar_addr, &size);
211 pr_debug("%s:%d ps3_repository_read_boot_dat_info failed\n",
216 header = (struct os_area_header *)__va(lpar_addr);
217 params = (struct os_area_params *)__va(lpar_addr + OS_AREA_SEGMENT_SIZE);
219 result = verify_header(header);
222 pr_debug("%s:%d verify_header failed\n", __func__, __LINE__);
230 saved_params.rtc_diff = params->rtc_diff;
231 saved_params.av_multi_out = params->av_multi_out;
232 saved_params.ctrl_button = params->ctrl_button;
233 memcpy(saved_params.static_ip_addr, params->static_ip_addr, 4);
234 memcpy(saved_params.network_mask, params->network_mask, 4);
235 memcpy(saved_params.default_gateway, params->default_gateway, 4);
236 memcpy(saved_params.dns_secondary, params->dns_secondary, 4);
242 * ps3_os_area_rtc_diff - Returns the ps3 rtc diff value.
244 * The ps3 rtc maintains a value that approximates seconds since
245 * 2000-01-01 00:00:00 UTC. Returns the exact number of seconds from 1970 to
246 * 2000 when saved_params.rtc_diff has not been properly set up.
249 u64 ps3_os_area_rtc_diff(void)
251 return saved_params.rtc_diff ? saved_params.rtc_diff : 946684800UL;
255 * ps3_os_area_get_av_multi_out - Returns the default video mode.
258 enum ps3_param_av_multi_out ps3_os_area_get_av_multi_out(void)
260 return saved_params.av_multi_out;
262 EXPORT_SYMBOL_GPL(ps3_os_area_get_av_multi_out);