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// ------------------------------------------------------------
// Cortex-A MPCore - Private timer functions
//
// Copyright ARM Ltd 2009. All rights reserved.
// ------------------------------------------------------------
.text
.align 3
// PPI ID 29
// Typical set of calls to enable Timer:
// init_private_timer(0xXXXX, 0) <-- Counter down value of 0xXXXX, with auto-reload
// start_private_timer()
// Timer offset from base of private peripheral space --> 0x600
// ------------------------------------------------------------
// void init_private_timer(unsigned int load_value, unsigned int auto_reload)
// Sets up the private timer
// r0: initial load value
// r1: IF 0 (AutoReload) ELSE (SingleShot) AutoReload not supported on Cortex-A7
.global init_private_timer
.type init_private_timer,function
init_private_timer:
// Setup timeout value (CNTP_TVAL)
MCR p15, 0, r0, c14, c2, 0
BX lr
// ------------------------------------------------------------
// void start_private_timer(void)
// Starts the private timer
.global start_private_timer
.type start_private_timer,function
start_private_timer:
MOV r0, #0x1
// Enable timer (CNTP_CTL)
MCR p15, 0, r0, c14, c2, 1
BX lr
// ------------------------------------------------------------
// void stop_private_timer(void)
// Stops the private timer
.global stop_private_timer
.type stop_private_timer,function
stop_private_timer:
BX lr
// ------------------------------------------------------------
// unsigned int read_private_timer(void)
// Reads the current value of the timer count register
.global get_private_timer_count
.type get_private_timer_count,function
get_private_timer_count:
BX lr
// ------------------------------------------------------------
// void clear_private_timer_irq(void)
// Clears the private timer interrupt
.global clear_private_timer_irq
.type clear_private_timer_irq,function
clear_private_timer_irq:
BX lr
// ------------------------------------------------------------
// End of code
// ------------------------------------------------------------
// ------------------------------------------------------------
// End of MP_PrivateTimer.s
// ------------------------------------------------------------
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