| 1 | /************************************************************************* |
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| 2 | ** Broadcom Corp. Confidential |
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| 3 | ** Copyright 2013 Broadcom Corp. All Rights Reserved. |
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| 4 | ** |
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| 5 | ** THIS SOFTWARE MAY ONLY BE USED SUBJECT TO AN EXECUTED SOFTWARE LICENSE |
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| 6 | ** AGREEMENT BETWEEN THE USER AND BROADCOM. YOU HAVE NO RIGHT TO USE OR |
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| 7 | ** EXPLOIT THIS MATERIAL EXCEPT SUBJECT TO THE TERMS OF SUCH AN AGREEMENT. |
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| 8 | ** |
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| 9 | ** File: shmoosupport.S |
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| 10 | ** Description: functions for memsysinit_lib support |
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| 11 | ** Created: alexp |
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| 12 | ** |
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| 13 | ** REVISION: |
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| 14 | ** |
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| 15 | ***************************************************************************/ |
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| 16 | |
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| 17 | #include "bmips.h" |
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| 18 | #include "bchp.h" |
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| 19 | #include "bchp_common.h" |
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| 20 | #include "bchp_timer.h" |
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| 21 | |
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| 22 | LEAF(IsSystemPllSetup) |
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| 23 | li v0, 0x1 |
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| 24 | jr ra |
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| 25 | nop |
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| 26 | END(IsSystemPllSetup) |
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| 27 | |
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| 28 | LEAF(check_S3_warm_boot) |
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| 29 | li v0, 0x0 |
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| 30 | jr ra |
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| 31 | nop |
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| 32 | END(check_S3_warm_boot) |
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| 33 | |
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| 34 | /****************************************************************************** |
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| 35 | * Function: sleep |
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| 36 | * Arguments: sleep time in a0 |
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| 37 | * |
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| 38 | * Description: |
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| 39 | * |
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| 40 | * pseudo code: |
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| 41 | * |
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| 42 | ******************************************************************************/ |
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| 43 | LEAF(sleep) |
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| 44 | li t3, REG_ADDR(BCHP_TIMER_TIMER_IS) |
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| 45 | /* TIMER_TIMER_IS.TMR0TO = 1 => clears this bit, resets timer count; writing '0' (to other bits) has no effect */ |
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| 46 | li t1, BCHP_TIMER_TIMER_IS_TMR0TO_MASK |
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| 47 | sw t1, 0(t3) |
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| 48 | |
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| 49 | li t0, REG_ADDR(BCHP_TIMER_TIMER0_CTRL) |
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| 50 | /* TIMER_TIMER0_CTRL.MODE = 1 => count down mode */ |
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| 51 | /* TIMER_TIMER0_CTRL.ENA = 1 => start counting */ |
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| 52 | li t1, (BCHP_TIMER_TIMER0_CTRL_MODE_MASK | BCHP_TIMER_TIMER0_CTRL_ENA_MASK) |
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| 53 | or t1, t1, a0 /* TIMER_TIMER0_CTRL.TIMEOUT_VAL = a0 */ |
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| 54 | sw t1, 0(t0) |
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| 55 | |
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| 56 | li t2, BCHP_TIMER_TIMER_IS_TMR0TO_MASK |
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| 57 | 1: lw t1, 0(t3) |
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| 58 | and t1, t1, t2 |
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| 59 | beq zero, t1, 1b |
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| 60 | nop |
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| 61 | |
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| 62 | |
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| 63 | /* TIMER_TIMER0_CTRL.ENA = 0 => stop counting */ |
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| 64 | sw zero, 0(t0) |
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| 65 | sw zero, 0(t0) |
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| 66 | |
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| 67 | jr ra |
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| 68 | nop |
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| 69 | END (sleep) |
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