1 /* 2 * PS3 bootwrapper support. 3 * 4 * Copyright (C) 2007 Sony Computer Entertainment Inc. 5 * Copyright 2007 Sony Corp. 6 * 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. 10 * 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. 15 * 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 19 */ 20 21 #include <stdarg.h> 22 #include <stddef.h> 23 #include "types.h" 24 #include "elf.h" 25 #include "string.h" 26 #include "stdio.h" 27 #include "page.h" 28 #include "ops.h" 29 30 extern int lv1_panic(u64 in_1); 31 extern int lv1_get_logical_partition_id(u64 *out_1); 32 extern int lv1_get_logical_ppe_id(u64 *out_1); 33 extern int lv1_get_repository_node_value(u64 in_1, u64 in_2, u64 in_3, 34 u64 in_4, u64 in_5, u64 *out_1, u64 *out_2); 35 36 #ifdef DEBUG 37 #define DBG(fmt...) printf(fmt) 38 #else 39 static inline int __attribute__ ((format (printf, 1, 2))) DBG( 40 const char *fmt, ...) {return 0;} 41 #endif 42 43 BSS_STACK(4096); 44 45 /* A buffer that may be edited by tools operating on a zImage binary so as to 46 * edit the command line passed to vmlinux (by setting /chosen/bootargs). 47 * The buffer is put in it's own section so that tools may locate it easier. 48 */ 49 50 static char cmdline[BOOT_COMMAND_LINE_SIZE] 51 __attribute__((__section__("__builtin_cmdline"))); 52 53 static void prep_cmdline(void *chosen) 54 { 55 if (cmdline[0] == '\0') 56 getprop(chosen, "bootargs", cmdline, BOOT_COMMAND_LINE_SIZE-1); 57 else 58 setprop_str(chosen, "bootargs", cmdline); 59 60 printf("cmdline: '%s'\n", cmdline); 61 } 62 63 static void ps3_console_write(const char *buf, int len) 64 { 65 } 66 67 static void ps3_exit(void) 68 { 69 printf("ps3_exit\n"); 70 71 /* lv1_panic will shutdown the lpar. */ 72 73 lv1_panic(0); /* zero = do not reboot */ 74 while (1); 75 } 76 77 static int ps3_repository_read_rm_size(u64 *rm_size) 78 { 79 int result; 80 u64 lpar_id; 81 u64 ppe_id; 82 u64 v2; 83 84 result = lv1_get_logical_partition_id(&lpar_id); 85 86 if (result) 87 return -1; 88 89 result = lv1_get_logical_ppe_id(&ppe_id); 90 91 if (result) 92 return -1; 93 94 /* 95 * n1: 0000000062690000 : ....bi.. 96 * n2: 7075000000000000 : pu...... 97 * n3: 0000000000000001 : ........ 98 * n4: 726d5f73697a6500 : rm_size. 99 */ 100 101 result = lv1_get_repository_node_value(lpar_id, 0x0000000062690000ULL, 102 0x7075000000000000ULL, ppe_id, 0x726d5f73697a6500ULL, rm_size, 103 &v2); 104 105 printf("%s:%d: ppe_id %lu \n", __func__, __LINE__, 106 (unsigned long)ppe_id); 107 printf("%s:%d: lpar_id %lu \n", __func__, __LINE__, 108 (unsigned long)lpar_id); 109 printf("%s:%d: rm_size %llxh \n", __func__, __LINE__, *rm_size); 110 111 return result ? -1 : 0; 112 } 113 114 void ps3_copy_vectors(void) 115 { 116 extern char __system_reset_kernel[]; 117 118 memcpy((void *)0x100, __system_reset_kernel, 512); 119 flush_cache((void *)0x100, 512); 120 } 121 122 void platform_init(unsigned long null_check) 123 { 124 const u32 heapsize = 0x1000000 - (u32)_end; /* 16MiB */ 125 void *chosen; 126 unsigned long ft_addr; 127 u64 rm_size; 128 unsigned long val; 129 130 console_ops.write = ps3_console_write; 131 platform_ops.exit = ps3_exit; 132 133 printf("\n-- PS3 bootwrapper --\n"); 134 135 simple_alloc_init(_end, heapsize, 32, 64); 136 fdt_init(_dtb_start); 137 138 chosen = finddevice("/chosen"); 139 140 ps3_repository_read_rm_size(&rm_size); 141 dt_fixup_memory(0, rm_size); 142 143 if (_initrd_end > _initrd_start) { 144 setprop_val(chosen, "linux,initrd-start", (u32)(_initrd_start)); 145 setprop_val(chosen, "linux,initrd-end", (u32)(_initrd_end)); 146 } 147 148 prep_cmdline(chosen); 149 150 ft_addr = dt_ops.finalize(); 151 152 ps3_copy_vectors(); 153 154 printf(" flat tree at 0x%lx\n\r", ft_addr); 155 156 val = *(unsigned long *)0; 157 158 if (val != null_check) 159 printf("null check failed: %lx != %lx\n\r", val, null_check); 160 161 ((kernel_entry_t)0)(ft_addr, 0, NULL); 162 163 ps3_exit(); 164 } 165