mirror of
https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
synced 2024-10-11 06:03:31 +00:00
c59c464a3e
On ppc64 machines with segment tables, CPU0's segment table is at a fixed address, currently 0x9000. This patch moves it to the free space at 0x6000, just below the fwnmi data area. This saves 8k of space in vmlinux and the runtime kernel image. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
142 lines
5.2 KiB
C
142 lines
5.2 KiB
C
/*
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* c 2001 PPC 64 Team, IBM Corp
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/config.h>
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#include <linux/types.h>
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#include <linux/threads.h>
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#include <linux/module.h>
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#include <asm/processor.h>
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#include <asm/ptrace.h>
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#include <asm/page.h>
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#include <asm/lppaca.h>
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#include <asm/iSeries/ItLpQueue.h>
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#include <asm/paca.h>
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static union {
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struct systemcfg data;
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u8 page[PAGE_SIZE];
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} systemcfg_store __page_aligned;
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struct systemcfg *systemcfg = &systemcfg_store.data;
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EXPORT_SYMBOL(systemcfg);
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/* This symbol is provided by the linker - let it fill in the paca
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* field correctly */
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extern unsigned long __toc_start;
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/* The Paca is an array with one entry per processor. Each contains an
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* lppaca, which contains the information shared between the
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* hypervisor and Linux. Each also contains an ItLpRegSave area which
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* is used by the hypervisor to save registers.
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* On systems with hardware multi-threading, there are two threads
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* per processor. The Paca array must contain an entry for each thread.
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* The VPD Areas will give a max logical processors = 2 * max physical
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* processors. The processor VPD array needs one entry per physical
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* processor (not thread).
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*/
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#define PACA_INIT_COMMON(number, start, asrr, asrv) \
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.lock_token = 0x8000, \
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.paca_index = (number), /* Paca Index */ \
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.default_decr = 0x00ff0000, /* Initial Decr */ \
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.kernel_toc = (unsigned long)(&__toc_start) + 0x8000UL, \
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.stab_real = (asrr), /* Real pointer to segment table */ \
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.stab_addr = (asrv), /* Virt pointer to segment table */ \
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.cpu_start = (start), /* Processor start */ \
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.hw_cpu_id = 0xffff, \
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.lppaca = { \
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.desc = 0xd397d781, /* "LpPa" */ \
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.size = sizeof(struct lppaca), \
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.dyn_proc_status = 2, \
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.decr_val = 0x00ff0000, \
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.fpregs_in_use = 1, \
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.end_of_quantum = 0xfffffffffffffffful, \
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.slb_count = 64, \
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}, \
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#ifdef CONFIG_PPC_ISERIES
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#define PACA_INIT_ISERIES(number) \
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.lppaca_ptr = &paca[number].lppaca, \
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.reg_save_ptr = &paca[number].reg_save, \
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.reg_save = { \
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.xDesc = 0xd397d9e2, /* "LpRS" */ \
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.xSize = sizeof(struct ItLpRegSave) \
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}
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#define PACA_INIT(number) \
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{ \
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PACA_INIT_COMMON(number, 0, 0, 0) \
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PACA_INIT_ISERIES(number) \
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}
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#define BOOTCPU_PACA_INIT(number) \
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{ \
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PACA_INIT_COMMON(number, 1, 0, (u64)&initial_stab) \
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PACA_INIT_ISERIES(number) \
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}
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#else
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#define PACA_INIT(number) \
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{ \
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PACA_INIT_COMMON(number, 0, 0, 0) \
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}
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#define BOOTCPU_PACA_INIT(number) \
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{ \
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PACA_INIT_COMMON(number, 1, STAB0_PHYS_ADDR, (u64)&initial_stab) \
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}
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#endif
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struct paca_struct paca[] = {
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BOOTCPU_PACA_INIT(0),
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#if NR_CPUS > 1
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PACA_INIT( 1), PACA_INIT( 2), PACA_INIT( 3),
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#if NR_CPUS > 4
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PACA_INIT( 4), PACA_INIT( 5), PACA_INIT( 6), PACA_INIT( 7),
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#if NR_CPUS > 8
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PACA_INIT( 8), PACA_INIT( 9), PACA_INIT( 10), PACA_INIT( 11),
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PACA_INIT( 12), PACA_INIT( 13), PACA_INIT( 14), PACA_INIT( 15),
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PACA_INIT( 16), PACA_INIT( 17), PACA_INIT( 18), PACA_INIT( 19),
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PACA_INIT( 20), PACA_INIT( 21), PACA_INIT( 22), PACA_INIT( 23),
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PACA_INIT( 24), PACA_INIT( 25), PACA_INIT( 26), PACA_INIT( 27),
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PACA_INIT( 28), PACA_INIT( 29), PACA_INIT( 30), PACA_INIT( 31),
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#if NR_CPUS > 32
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PACA_INIT( 32), PACA_INIT( 33), PACA_INIT( 34), PACA_INIT( 35),
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PACA_INIT( 36), PACA_INIT( 37), PACA_INIT( 38), PACA_INIT( 39),
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PACA_INIT( 40), PACA_INIT( 41), PACA_INIT( 42), PACA_INIT( 43),
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PACA_INIT( 44), PACA_INIT( 45), PACA_INIT( 46), PACA_INIT( 47),
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PACA_INIT( 48), PACA_INIT( 49), PACA_INIT( 50), PACA_INIT( 51),
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PACA_INIT( 52), PACA_INIT( 53), PACA_INIT( 54), PACA_INIT( 55),
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PACA_INIT( 56), PACA_INIT( 57), PACA_INIT( 58), PACA_INIT( 59),
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PACA_INIT( 60), PACA_INIT( 61), PACA_INIT( 62), PACA_INIT( 63),
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#if NR_CPUS > 64
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PACA_INIT( 64), PACA_INIT( 65), PACA_INIT( 66), PACA_INIT( 67),
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PACA_INIT( 68), PACA_INIT( 69), PACA_INIT( 70), PACA_INIT( 71),
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PACA_INIT( 72), PACA_INIT( 73), PACA_INIT( 74), PACA_INIT( 75),
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PACA_INIT( 76), PACA_INIT( 77), PACA_INIT( 78), PACA_INIT( 79),
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PACA_INIT( 80), PACA_INIT( 81), PACA_INIT( 82), PACA_INIT( 83),
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PACA_INIT( 84), PACA_INIT( 85), PACA_INIT( 86), PACA_INIT( 87),
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PACA_INIT( 88), PACA_INIT( 89), PACA_INIT( 90), PACA_INIT( 91),
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PACA_INIT( 92), PACA_INIT( 93), PACA_INIT( 94), PACA_INIT( 95),
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PACA_INIT( 96), PACA_INIT( 97), PACA_INIT( 98), PACA_INIT( 99),
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PACA_INIT(100), PACA_INIT(101), PACA_INIT(102), PACA_INIT(103),
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PACA_INIT(104), PACA_INIT(105), PACA_INIT(106), PACA_INIT(107),
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PACA_INIT(108), PACA_INIT(109), PACA_INIT(110), PACA_INIT(111),
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PACA_INIT(112), PACA_INIT(113), PACA_INIT(114), PACA_INIT(115),
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PACA_INIT(116), PACA_INIT(117), PACA_INIT(118), PACA_INIT(119),
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PACA_INIT(120), PACA_INIT(121), PACA_INIT(122), PACA_INIT(123),
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PACA_INIT(124), PACA_INIT(125), PACA_INIT(126), PACA_INIT(127),
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#endif
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#endif
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#endif
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#endif
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#endif
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};
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EXPORT_SYMBOL(paca);
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