| 1 | |
| 2 | * arch/xtensa/kernel/platform.c
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| 3 | *
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| 4 | * Default platform functions.
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| 5 | *
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| 6 | * This file is subject to the terms and conditions of the GNU General Public
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| 7 | * License. See the file "COPYING" in the main directory of this archive
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| 8 | * for more details.
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| 9 | *
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| 10 | * Copyright (C) 2005 Tensilica Inc.
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| 11 | *
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| 12 | * Chris Zankel <[email protected]>
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| 13 |
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| 14 |
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| 15 | #include <linux/printk.h>
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| 16 | #include <linux/types.h>
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| 17 | #include <linux/units.h>
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| 18 | #include <asm/platform.h>
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| 19 | #include <asm/timex.h>
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| 20 |
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| 21 | |
| 22 | * Default functions that are used if no platform specific function is defined.
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| 23 | * (Please, refer to arch/xtensa/include/asm/platform.h for more information)
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| 24 |
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| 25 |
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| 26 | void __weak __init platform_init(bp_tag_t *first)
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| 27 | {
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| 28 | }
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| 29 |
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| 30 | void __weak __init platform_setup(char **cmd)
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| 31 | {
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| 32 | }
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| 33 |
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| 34 | void __weak platform_idle(void)
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| 35 | {
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| 36 | __asm__ __volatile__ ("waiti 0" ::: "memory");
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| 37 | }
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| 38 |
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| 39 | #ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
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| 40 | void __weak platform_calibrate_ccount(void)
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| 41 | {
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| 42 | pr_err("ERROR: Cannot calibrate cpu frequency! Assuming 10 MHz.\n");
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| 43 | ccount_freq = 10 * HZ_PER_MHZ;
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| 44 | }
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| 45 | #endif
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