098e274427
Allow the PS3 AV settings driver to access the default video mode stored in the OS area. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
262 lines
7.8 KiB
C
262 lines
7.8 KiB
C
/*
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* PS3 'Other OS' area data.
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*
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* Copyright (C) 2006 Sony Computer Entertainment Inc.
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* Copyright 2006 Sony Corp.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/kernel.h>
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#include <linux/io.h>
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#include <asm/lmb.h>
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#include <asm/ps3.h>
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#include "platform.h"
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enum {
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OS_AREA_SEGMENT_SIZE = 0X200,
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};
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enum {
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HEADER_LDR_FORMAT_RAW = 0,
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HEADER_LDR_FORMAT_GZIP = 1,
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};
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/**
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* struct os_area_header - os area header segment.
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* @magic_num: Always 'cell_ext_os_area'.
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* @hdr_version: Header format version number.
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* @os_area_offset: Starting segment number of os image area.
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* @ldr_area_offset: Starting segment number of bootloader image area.
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* @ldr_format: HEADER_LDR_FORMAT flag.
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* @ldr_size: Size of bootloader image in bytes.
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*
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* Note that the docs refer to area offsets. These are offsets in units of
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* segments from the start of the os area (top of the header). These are
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* better thought of as segment numbers. The os area of the os area is
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* reserved for the os image.
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*/
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struct os_area_header {
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s8 magic_num[16];
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u32 hdr_version;
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u32 os_area_offset;
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u32 ldr_area_offset;
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u32 _reserved_1;
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u32 ldr_format;
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u32 ldr_size;
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u32 _reserved_2[6];
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};
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enum {
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PARAM_BOOT_FLAG_GAME_OS = 0,
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PARAM_BOOT_FLAG_OTHER_OS = 1,
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};
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enum {
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PARAM_CTRL_BUTTON_O_IS_YES = 0,
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PARAM_CTRL_BUTTON_X_IS_YES = 1,
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};
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/**
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* struct os_area_params - os area params segment.
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* @boot_flag: User preference of operating system, PARAM_BOOT_FLAG flag.
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* @num_params: Number of params in this (params) segment.
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* @rtc_diff: Difference in seconds between 1970 and the ps3 rtc value.
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* @av_multi_out: User preference of AV output, PARAM_AV_MULTI_OUT flag.
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* @ctrl_button: User preference of controller button config, PARAM_CTRL_BUTTON
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* flag.
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* @static_ip_addr: User preference of static IP address.
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* @network_mask: User preference of static network mask.
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* @default_gateway: User preference of static default gateway.
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* @dns_primary: User preference of static primary dns server.
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* @dns_secondary: User preference of static secondary dns server.
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*
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* User preference of zero for static_ip_addr means use dhcp.
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*/
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struct os_area_params {
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u32 boot_flag;
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u32 _reserved_1[3];
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u32 num_params;
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u32 _reserved_2[3];
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/* param 0 */
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s64 rtc_diff;
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u8 av_multi_out;
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u8 ctrl_button;
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u8 _reserved_3[6];
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/* param 1 */
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u8 static_ip_addr[4];
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u8 network_mask[4];
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u8 default_gateway[4];
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u8 _reserved_4[4];
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/* param 2 */
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u8 dns_primary[4];
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u8 dns_secondary[4];
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u8 _reserved_5[8];
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};
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/**
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* struct saved_params - Static working copies of data from the 'Other OS' area.
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*
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* For the convinience of the guest, the HV makes a copy of the 'Other OS' area
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* in flash to a high address in the boot memory region and then puts that RAM
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* address and the byte count into the repository for retreval by the guest.
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* We copy the data we want into a static variable and allow the memory setup
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* by the HV to be claimed by the lmb manager.
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*/
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struct saved_params {
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/* param 0 */
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s64 rtc_diff;
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unsigned int av_multi_out;
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unsigned int ctrl_button;
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/* param 1 */
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u8 static_ip_addr[4];
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u8 network_mask[4];
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u8 default_gateway[4];
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/* param 2 */
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u8 dns_primary[4];
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u8 dns_secondary[4];
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} static saved_params;
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#define dump_header(_a) _dump_header(_a, __func__, __LINE__)
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static void _dump_header(const struct os_area_header __iomem *h, const char* func,
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int line)
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{
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pr_debug("%s:%d: h.magic_num: '%s'\n", func, line,
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h->magic_num);
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pr_debug("%s:%d: h.hdr_version: %u\n", func, line,
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h->hdr_version);
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pr_debug("%s:%d: h.os_area_offset: %u\n", func, line,
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h->os_area_offset);
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pr_debug("%s:%d: h.ldr_area_offset: %u\n", func, line,
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h->ldr_area_offset);
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pr_debug("%s:%d: h.ldr_format: %u\n", func, line,
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h->ldr_format);
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pr_debug("%s:%d: h.ldr_size: %xh\n", func, line,
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h->ldr_size);
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}
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#define dump_params(_a) _dump_params(_a, __func__, __LINE__)
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static void _dump_params(const struct os_area_params __iomem *p, const char* func,
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int line)
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{
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pr_debug("%s:%d: p.boot_flag: %u\n", func, line, p->boot_flag);
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pr_debug("%s:%d: p.num_params: %u\n", func, line, p->num_params);
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pr_debug("%s:%d: p.rtc_diff %ld\n", func, line, p->rtc_diff);
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pr_debug("%s:%d: p.av_multi_out %u\n", func, line, p->av_multi_out);
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pr_debug("%s:%d: p.ctrl_button: %u\n", func, line, p->ctrl_button);
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pr_debug("%s:%d: p.static_ip_addr: %u.%u.%u.%u\n", func, line,
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p->static_ip_addr[0], p->static_ip_addr[1],
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p->static_ip_addr[2], p->static_ip_addr[3]);
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pr_debug("%s:%d: p.network_mask: %u.%u.%u.%u\n", func, line,
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p->network_mask[0], p->network_mask[1],
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p->network_mask[2], p->network_mask[3]);
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pr_debug("%s:%d: p.default_gateway: %u.%u.%u.%u\n", func, line,
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p->default_gateway[0], p->default_gateway[1],
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p->default_gateway[2], p->default_gateway[3]);
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pr_debug("%s:%d: p.dns_primary: %u.%u.%u.%u\n", func, line,
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p->dns_primary[0], p->dns_primary[1],
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p->dns_primary[2], p->dns_primary[3]);
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pr_debug("%s:%d: p.dns_secondary: %u.%u.%u.%u\n", func, line,
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p->dns_secondary[0], p->dns_secondary[1],
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p->dns_secondary[2], p->dns_secondary[3]);
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}
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static int __init verify_header(const struct os_area_header *header)
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{
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if (memcmp(header->magic_num, "cell_ext_os_area", 16)) {
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pr_debug("%s:%d magic_num failed\n", __func__, __LINE__);
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return -1;
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}
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if (header->hdr_version < 1) {
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pr_debug("%s:%d hdr_version failed\n", __func__, __LINE__);
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return -1;
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}
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if (header->os_area_offset > header->ldr_area_offset) {
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pr_debug("%s:%d offsets failed\n", __func__, __LINE__);
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return -1;
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}
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return 0;
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}
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int __init ps3_os_area_init(void)
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{
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int result;
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u64 lpar_addr;
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unsigned int size;
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struct os_area_header *header;
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struct os_area_params *params;
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result = ps3_repository_read_boot_dat_info(&lpar_addr, &size);
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if (result) {
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pr_debug("%s:%d ps3_repository_read_boot_dat_info failed\n",
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__func__, __LINE__);
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return result;
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}
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header = (struct os_area_header *)__va(lpar_addr);
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params = (struct os_area_params *)__va(lpar_addr + OS_AREA_SEGMENT_SIZE);
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result = verify_header(header);
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if (result) {
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pr_debug("%s:%d verify_header failed\n", __func__, __LINE__);
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dump_header(header);
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return -EIO;
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}
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dump_header(header);
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dump_params(params);
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saved_params.rtc_diff = params->rtc_diff;
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saved_params.av_multi_out = params->av_multi_out;
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saved_params.ctrl_button = params->ctrl_button;
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memcpy(saved_params.static_ip_addr, params->static_ip_addr, 4);
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memcpy(saved_params.network_mask, params->network_mask, 4);
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memcpy(saved_params.default_gateway, params->default_gateway, 4);
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memcpy(saved_params.dns_secondary, params->dns_secondary, 4);
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return result;
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}
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/**
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* ps3_os_area_rtc_diff - Returns the ps3 rtc diff value.
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*
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* The ps3 rtc maintains a value that approximates seconds since
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* 2000-01-01 00:00:00 UTC. Returns the exact number of seconds from 1970 to
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* 2000 when saved_params.rtc_diff has not been properly set up.
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*/
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u64 ps3_os_area_rtc_diff(void)
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{
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return saved_params.rtc_diff ? saved_params.rtc_diff : 946684800UL;
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}
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/**
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* ps3_os_area_get_av_multi_out - Returns the default video mode.
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*/
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enum ps3_param_av_multi_out ps3_os_area_get_av_multi_out(void)
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{
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return saved_params.av_multi_out;
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}
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EXPORT_SYMBOL_GPL(ps3_os_area_get_av_multi_out);
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