1 /* 2 * c 2001 PPC 64 Team, IBM Corp 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License 6 * as published by the Free Software Foundation; either version 7 * 2 of the License, or (at your option) any later version. 8 */ 9 10 #include <linux/config.h> 11 #include <linux/types.h> 12 #include <linux/threads.h> 13 #include <linux/module.h> 14 15 #include <asm/processor.h> 16 #include <asm/ptrace.h> 17 #include <asm/page.h> 18 #include <asm/systemcfg.h> 19 #include <asm/lppaca.h> 20 #include <asm/iseries/it_lp_queue.h> 21 #include <asm/paca.h> 22 23 static union { 24 struct systemcfg data; 25 u8 page[PAGE_SIZE]; 26 } systemcfg_store __attribute__((__section__(".data.page.aligned"))); 27 struct systemcfg *_systemcfg = &systemcfg_store.data; 28 29 30 /* This symbol is provided by the linker - let it fill in the paca 31 * field correctly */ 32 extern unsigned long __toc_start; 33 34 /* The Paca is an array with one entry per processor. Each contains an 35 * lppaca, which contains the information shared between the 36 * hypervisor and Linux. Each also contains an ItLpRegSave area which 37 * is used by the hypervisor to save registers. 38 * On systems with hardware multi-threading, there are two threads 39 * per processor. The Paca array must contain an entry for each thread. 40 * The VPD Areas will give a max logical processors = 2 * max physical 41 * processors. The processor VPD array needs one entry per physical 42 * processor (not thread). 43 */ 44 #define PACA_INIT_COMMON(number, start, asrr, asrv) \ 45 .lock_token = 0x8000, \ 46 .paca_index = (number), /* Paca Index */ \ 47 .default_decr = 0x00ff0000, /* Initial Decr */ \ 48 .kernel_toc = (unsigned long)(&__toc_start) + 0x8000UL, \ 49 .stab_real = (asrr), /* Real pointer to segment table */ \ 50 .stab_addr = (asrv), /* Virt pointer to segment table */ \ 51 .cpu_start = (start), /* Processor start */ \ 52 .hw_cpu_id = 0xffff, \ 53 .lppaca = { \ 54 .desc = 0xd397d781, /* "LpPa" */ \ 55 .size = sizeof(struct lppaca), \ 56 .dyn_proc_status = 2, \ 57 .decr_val = 0x00ff0000, \ 58 .fpregs_in_use = 1, \ 59 .end_of_quantum = 0xfffffffffffffffful, \ 60 .slb_count = 64, \ 61 .vmxregs_in_use = 0, \ 62 }, \ 63 64 #ifdef CONFIG_PPC_ISERIES 65 #define PACA_INIT_ISERIES(number) \ 66 .lppaca_ptr = &paca[number].lppaca, \ 67 .reg_save_ptr = &paca[number].reg_save, \ 68 .reg_save = { \ 69 .xDesc = 0xd397d9e2, /* "LpRS" */ \ 70 .xSize = sizeof(struct ItLpRegSave) \ 71 } 72 73 #define PACA_INIT(number) \ 74 { \ 75 PACA_INIT_COMMON(number, 0, 0, 0) \ 76 PACA_INIT_ISERIES(number) \ 77 } 78 79 #define BOOTCPU_PACA_INIT(number) \ 80 { \ 81 PACA_INIT_COMMON(number, 1, 0, (u64)&initial_stab) \ 82 PACA_INIT_ISERIES(number) \ 83 } 84 85 #else 86 #define PACA_INIT(number) \ 87 { \ 88 PACA_INIT_COMMON(number, 0, 0, 0) \ 89 } 90 91 #define BOOTCPU_PACA_INIT(number) \ 92 { \ 93 PACA_INIT_COMMON(number, 1, STAB0_PHYS_ADDR, (u64)&initial_stab) \ 94 } 95 #endif 96 97 struct paca_struct paca[] = { 98 BOOTCPU_PACA_INIT(0), 99 #if NR_CPUS > 1 100 PACA_INIT( 1), PACA_INIT( 2), PACA_INIT( 3), 101 #if NR_CPUS > 4 102 PACA_INIT( 4), PACA_INIT( 5), PACA_INIT( 6), PACA_INIT( 7), 103 #if NR_CPUS > 8 104 PACA_INIT( 8), PACA_INIT( 9), PACA_INIT( 10), PACA_INIT( 11), 105 PACA_INIT( 12), PACA_INIT( 13), PACA_INIT( 14), PACA_INIT( 15), 106 PACA_INIT( 16), PACA_INIT( 17), PACA_INIT( 18), PACA_INIT( 19), 107 PACA_INIT( 20), PACA_INIT( 21), PACA_INIT( 22), PACA_INIT( 23), 108 PACA_INIT( 24), PACA_INIT( 25), PACA_INIT( 26), PACA_INIT( 27), 109 PACA_INIT( 28), PACA_INIT( 29), PACA_INIT( 30), PACA_INIT( 31), 110 #if NR_CPUS > 32 111 PACA_INIT( 32), PACA_INIT( 33), PACA_INIT( 34), PACA_INIT( 35), 112 PACA_INIT( 36), PACA_INIT( 37), PACA_INIT( 38), PACA_INIT( 39), 113 PACA_INIT( 40), PACA_INIT( 41), PACA_INIT( 42), PACA_INIT( 43), 114 PACA_INIT( 44), PACA_INIT( 45), PACA_INIT( 46), PACA_INIT( 47), 115 PACA_INIT( 48), PACA_INIT( 49), PACA_INIT( 50), PACA_INIT( 51), 116 PACA_INIT( 52), PACA_INIT( 53), PACA_INIT( 54), PACA_INIT( 55), 117 PACA_INIT( 56), PACA_INIT( 57), PACA_INIT( 58), PACA_INIT( 59), 118 PACA_INIT( 60), PACA_INIT( 61), PACA_INIT( 62), PACA_INIT( 63), 119 #if NR_CPUS > 64 120 PACA_INIT( 64), PACA_INIT( 65), PACA_INIT( 66), PACA_INIT( 67), 121 PACA_INIT( 68), PACA_INIT( 69), PACA_INIT( 70), PACA_INIT( 71), 122 PACA_INIT( 72), PACA_INIT( 73), PACA_INIT( 74), PACA_INIT( 75), 123 PACA_INIT( 76), PACA_INIT( 77), PACA_INIT( 78), PACA_INIT( 79), 124 PACA_INIT( 80), PACA_INIT( 81), PACA_INIT( 82), PACA_INIT( 83), 125 PACA_INIT( 84), PACA_INIT( 85), PACA_INIT( 86), PACA_INIT( 87), 126 PACA_INIT( 88), PACA_INIT( 89), PACA_INIT( 90), PACA_INIT( 91), 127 PACA_INIT( 92), PACA_INIT( 93), PACA_INIT( 94), PACA_INIT( 95), 128 PACA_INIT( 96), PACA_INIT( 97), PACA_INIT( 98), PACA_INIT( 99), 129 PACA_INIT(100), PACA_INIT(101), PACA_INIT(102), PACA_INIT(103), 130 PACA_INIT(104), PACA_INIT(105), PACA_INIT(106), PACA_INIT(107), 131 PACA_INIT(108), PACA_INIT(109), PACA_INIT(110), PACA_INIT(111), 132 PACA_INIT(112), PACA_INIT(113), PACA_INIT(114), PACA_INIT(115), 133 PACA_INIT(116), PACA_INIT(117), PACA_INIT(118), PACA_INIT(119), 134 PACA_INIT(120), PACA_INIT(121), PACA_INIT(122), PACA_INIT(123), 135 PACA_INIT(124), PACA_INIT(125), PACA_INIT(126), PACA_INIT(127), 136 #endif 137 #endif 138 #endif 139 #endif 140 #endif 141 }; 142 EXPORT_SYMBOL(paca); 143