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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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368dd5acd1
Implement the Panasonic MN10300 AM34 CPU subarch and implement SMP support for MN10300. Also implement support for the MN2WS0060 processor and the ASB2364 evaluation board which are AM34 based. Signed-off-by: Akira Takeuchi <takeuchi.akr@jp.panasonic.com> Signed-off-by: Kiyoshi Owada <owada.kiyoshi@jp.panasonic.com> Signed-off-by: David Howells <dhowells@redhat.com>
52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
/* MN10300 Profiling setup
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*
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* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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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 Licence
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* as published by the Free Software Foundation; either version
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* 2 of the Licence, or (at your option) any later version.
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*/
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/*
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* initialise the profiling if enabled
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* - using with gdbstub will give anomalous results
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* - can't be used with gdbstub if running at IRQ priority 0
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*/
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static __init int profile_init(void)
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{
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u16 tmp;
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if (!prof_buffer)
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return 0;
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/* use timer 11 to drive the profiling interrupts */
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set_intr_stub(EXCEP_IRQ_LEVEL0, profile_handler);
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/* set IRQ priority at which to run */
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set_intr_level(TM11IRQ, GxICR_LEVEL_0);
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/* set up timer 11
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* - source: (IOCLK 33MHz)*2 = 66MHz
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* - frequency: (33330000*2) / 8 / 20625 = 202Hz
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*/
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TM11BR = 20625 - 1;
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TM11MD = TM8MD_SRC_IOCLK_8;
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TM11MD |= TM8MD_INIT_COUNTER;
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TM11MD &= ~TM8MD_INIT_COUNTER;
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TM11MD |= TM8MD_COUNT_ENABLE;
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TM11ICR |= GxICR_ENABLE;
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tmp = TM11ICR;
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printk(KERN_INFO "Profiling initiated on timer 11, priority 0, %uHz\n",
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MN10300_IOCLK / 8 / (TM11BR + 1));
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printk(KERN_INFO "Profile histogram stored %p-%p\n",
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prof_buffer, (u8 *)(prof_buffer + prof_len) - 1);
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return 0;
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}
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__initcall(profile_init);
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