[PATCH 14/16] powerpc: add ps3 platform OS params support
From: Geoff Levand <hidden>
Date: 2006-11-10 20:03:51
Add support to access the parameter data from the ps3pf other OS area of flash memory. The parameter data mainly holds user preferences like static ip address, etc. Signed-off-by: Geoff Levand <redacted> --- arch/powerpc/platforms/ps3pf/Makefile | 2 arch/powerpc/platforms/ps3pf/os-area.c | 245 +++++++++++++++++++++++++++++++++ arch/powerpc/platforms/ps3pf/setup.c | 1 3 files changed, 247 insertions(+), 1 deletion(-) Index: cell--common--6/arch/powerpc/platforms/ps3pf/Makefile ===================================================================
--- cell--common--6.orig/arch/powerpc/platforms/ps3pf/Makefile
+++ cell--common--6/arch/powerpc/platforms/ps3pf/Makefile@@ -1,2 +1,2 @@ obj-$(CONFIG_PS3PF) += setup.o mm.o smp.o time.o hvcall.o htab.o repository.o -obj-$(CONFIG_PS3PF) += interrupt.o exports.o +obj-$(CONFIG_PS3PF) += interrupt.o exports.o os-area.o
Index: cell--common--6/arch/powerpc/platforms/ps3pf/os-area.c ===================================================================
--- /dev/null
+++ cell--common--6/arch/powerpc/platforms/ps3pf/os-area.c@@ -0,0 +1,245 @@ +/* + * os-area.c - PS3 Platform OS data area. + * + * Copyright (C) 2006 Sony Computer Entertainment Inc. + * Copyright 2006 Sony Corp. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#undef DEBUG + +#include <linux/kernel.h> +#include <linux/io.h> + +#include <asm/lmb.h> +#include <asm/ps3pf.h> + +#include "platform.h" + +enum { + segment_size = 0x200, + ldr_format_raw = 0, + ldr_format_gzip = 1, + boot_flag_game_os = 0, + boot_flag_other_os = 1, + av_multi_out_ntsc = 0, + av_multi_out_pal_rgb = 1, + av_multi_out_pal_ycbcr = 2, + av_multi_out_secam = 3, + ctrl_button_o_is_yes = 0, + ctrl_button_x_is_yes = 1, +}; + +/** + * struct header - os area header segment. + * @magic_num: Always 'cell_ext_os_area'. + * @hdr_version: Header format version number. + * @os_region_offset: Segment number of os region. + * @bootloader_offset: Segment number of bootloader image. + * @ldr_format: ldr_format flag. + * @ldr_size: Size of bootloader image in bytes. + */ + +struct header { + s8 magic_num[16]; + u32 hdr_version; + u32 os_image_offset; + u32 bootloader_offset; + u32 _reserved_1; + u32 ldr_format; + u32 ldr_size; + u32 _reserved_2[6]; +} __attribute__ ((packed)); + +/** + * struct params - os area params segment. + * @boot_flag: User preference of operating system. + * @num_params: Number of params in this (params) segment. + * @rtc_diff: Difference in seconds between 1970 and the ps3pf rtc value. + * @av_multi_out: User preference of AV output. + * @ctrl_button: User preference of controller button config. + * @static_ip_addr: User preference of static IP address. + * @network_mask: User preference of static network mask. + * @default_gateway: User preference of static default gateway. + * @dns_primary: User preference of static primary dns server. + * @dns_secondary: User preference of static secondary dns server. + * + * User preference of zero for static_ip_addr means use dhcp. + */ + +struct params { + u32 boot_flag; + u32 _reserved_1[3]; + u32 num_params; + u32 _reserved_2[3]; + /* param 0 */ + s64 rtc_diff; + u8 av_multi_out; + u8 ctrl_button; + u8 _reserved_3[6]; + /* param 1 */ + u8 static_ip_addr[4]; + u8 network_mask[4]; + u8 default_gateway[4]; + u8 _reserved_4[4]; + /* param 2 */ + u8 dns_primary[4]; + u8 dns_secondary[4]; + u8 _reserved_5[8]; +} __attribute__ ((packed)); + +/** + * struct os_params - Static working copies of data from the os area. + * + * For the convinience of the guest, the HV makes a copy of the os area in + * flash to a high address in the boot memory region and then puts that RAM + * address and the byte count into the repository for retreval by the guest. + * We copy the data we want into a static variable and allow the memory setup + * by the HV to be claimed by the lmb manager. + */ + +struct os_params { + /* param 0 */ + s64 rtc_diff; + unsigned int av_multi_out; + unsigned int ctrl_button; + /* param 1 */ + u8 static_ip_addr[4]; + u8 network_mask[4]; + u8 default_gateway[4]; + /* param 2 */ + u8 dns_primary[4]; + u8 dns_secondary[4]; +} static os_params; + +#define dump_header(_a) _dump_header(_a, __func__, __LINE__) +static void _dump_header(const struct header __iomem *h, const char* func, + int line) +{ + pr_debug("%s:%d: h.magic_num: '%s'\n", func, line, + h->magic_num); + pr_debug("%s:%d: h.hdr_version: %u\n", func, line, + h->hdr_version); + pr_debug("%s:%d: h.os_image_offset: %u\n", func, line, + h->os_image_offset); + pr_debug("%s:%d: h.bootloader_offset: %u\n", func, line, + h->bootloader_offset); + pr_debug("%s:%d: h.ldr_format: %u\n", func, line, + h->ldr_format); + pr_debug("%s:%d: h.ldr_size: %xh\n", func, line, + h->ldr_size); +} + +#define dump_params(_a) _dump_params(_a, __func__, __LINE__) +static void _dump_params(const struct params __iomem *p, const char* func, + int line) +{ + pr_debug("%s:%d: p.boot_flag: %u\n", func, line, p->boot_flag); + pr_debug("%s:%d: p.num_params: %u\n", func, line, p->num_params); + pr_debug("%s:%d: p.rtc_diff %ld\n", func, line, p->rtc_diff); + pr_debug("%s:%d: p.av_multi_out %u\n", func, line, p->av_multi_out); + pr_debug("%s:%d: p.ctrl_button: %u\n", func, line, p->ctrl_button); + pr_debug("%s:%d: p.static_ip_addr: %u.%u.%u.%u\n", func, line, + p->static_ip_addr[0], p->static_ip_addr[1], + p->static_ip_addr[2], p->static_ip_addr[3]); + pr_debug("%s:%d: p.network_mask: %u.%u.%u.%u\n", func, line, + p->network_mask[0], p->network_mask[1], + p->network_mask[2], p->network_mask[3]); + pr_debug("%s:%d: p.default_gateway: %u.%u.%u.%u\n", func, line, + p->default_gateway[0], p->default_gateway[1], + p->default_gateway[2], p->default_gateway[3]); + pr_debug("%s:%d: p.dns_primary: %u.%u.%u.%u\n", func, line, + p->dns_primary[0], p->dns_primary[1], + p->dns_primary[2], p->dns_primary[3]); + pr_debug("%s:%d: p.dns_secondary: %u.%u.%u.%u\n", func, line, + p->dns_secondary[0], p->dns_secondary[1], + p->dns_secondary[2], p->dns_secondary[3]); +} + +static int __init verify_header(const struct header *header) +{ + if (memcmp(header->magic_num, "cell_ext_os_area", 16)) { + pr_debug("%s:%d magic_num failed\n", __func__, __LINE__); + return -1; + } + + if (header->hdr_version != 1) { + pr_debug("%s:%d hdr_version failed\n", __func__, __LINE__); + return -1; + } + + if (header->os_image_offset > header->bootloader_offset) { + pr_debug("%s:%d offsets failed\n", __func__, __LINE__); + return -1; + } + + return 0; +} + +int __init ps3pf_os_area_init(void) +{ + int result; + u64 lpar_addr; + unsigned int size; + struct header *header; + struct params *params; + + result = ps3pf_repository_read_boot_dat_info(&lpar_addr, &size); + + if (result) { + pr_debug("%s:%d ps3pf_repository_read_boot_dat_info failed\n", + __func__, __LINE__); + return result; + } + + header = (struct header *)__va(lpar_addr); + params = (struct params *)__va(lpar_addr + segment_size); + + result = verify_header(header); + + if (result) { + pr_debug("%s:%d verify_header failed\n", __func__, __LINE__); + dump_header(header); + return -EIO; + } + + dump_header(header); + dump_params(params); + + os_params.rtc_diff = params->rtc_diff; + os_params.av_multi_out = params->av_multi_out; + if (0) { /* currently not used */ + os_params.ctrl_button = params->ctrl_button; + memcpy(os_params.static_ip_addr, params->static_ip_addr, 4); + memcpy(os_params.network_mask, params->network_mask, 4); + memcpy(os_params.default_gateway, params->default_gateway, 4); + memcpy(os_params.dns_secondary, params->dns_secondary, 4); + } + + return result; +} + +/** + * ps3pf_os_area_rtc_diff - Returns the ps3pf rtc diff value. + * + * The ps3pf rtc maintains a value that approximates seconds since + * 2000-01-01 00:00:00 UTC. Returns the exact number of seconds from 1970 to + * 2000 when os_params.rtc_diff has not been properly set up. + */ + +u64 ps3pf_os_area_rtc_diff(void) +{ + return os_params.rtc_diff ? os_params.rtc_diff : 946684800UL; +}
Index: cell--common--6/arch/powerpc/platforms/ps3pf/setup.c ===================================================================
--- cell--common--6.orig/arch/powerpc/platforms/ps3pf/setup.c
+++ cell--common--6/arch/powerpc/platforms/ps3pf/setup.c@@ -115,6 +115,7 @@ powerpc_firmware_features |= FW_FEATURE_LPAR; + ps3pf_os_area_init(); ps3pf_mm_init(); ps3pf_mm_vas_create(&htab_size); ps3pf_hpte_init(htab_size);