Updated functions to deal with USB clocking. (PPL1) See http://www.nxp.com/documents/user_manual/UM10360.pdf Section 4.6 & 4.7.3
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Diff: CoreMark/core_portme.c
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- 0:b5d3bd64d2dc
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/CoreMark/core_portme.c Sun Jan 24 15:46:26 2010 +0000 @@ -0,0 +1,121 @@ +/* + File : core_portme.c +*/ +/* + Author : Shay Gal-On, EEMBC + Legal : TODO! +*/ +#include "coremark.h" +#include "core_portme.h" +#include "mbed.h" + + +#if VALIDATION_RUN + volatile ee_s32 seed1_volatile=0x3415; + volatile ee_s32 seed2_volatile=0x3415; + volatile ee_s32 seed3_volatile=0x66; +#endif +#if PERFORMANCE_RUN + volatile ee_s32 seed1_volatile=0x0; + volatile ee_s32 seed2_volatile=0x0; + volatile ee_s32 seed3_volatile=0x66; +#endif +#if PROFILE_RUN + volatile ee_s32 seed1_volatile=0x8; + volatile ee_s32 seed2_volatile=0x8; + volatile ee_s32 seed3_volatile=0x8; +#endif + volatile ee_s32 seed4_volatile=ITERATIONS; + volatile ee_s32 seed5_volatile=0; +/* Porting : Timing functions + How to capture time and convert to seconds must be ported to whatever is supported by the platform. + e.g. Read value from on board RTC, read value from cpu clock cycles performance counter etc. + Sample implementation for standard time.h and windows.h definitions included. +*/ + +CORETIMETYPE barebones_clock() { + return clock(); +} +/* Define : TIMER_RES_DIVIDER + Divider to trade off timer resolution and total time that can be measured. + + Use lower values to increase resolution, but make sure that overflow does not occur. + If there are issues with the return value overflowing, increase this value. + */ +#define GETMYTIME(_t) (*_t=barebones_clock()) +#define MYTIMEDIFF(fin,ini) ((fin)-(ini)) +#define TIMER_RES_DIVIDER 1 +#define SAMPLE_TIME_IMPLEMENTATION 1 +#define EE_TICKS_PER_SEC (CLOCKS_PER_SEC / TIMER_RES_DIVIDER) + +/** Define Host specific (POSIX), or target specific global time variables. */ +static CORETIMETYPE start_time_val, stop_time_val; + +/* Function : start_time + This function will be called right before starting the timed portion of the benchmark. + + Implementation may be capturing a system timer (as implemented in the example code) + or zeroing some system parameters - e.g. setting the cpu clocks cycles to 0. +*/ +void start_time(void) { + GETMYTIME(&start_time_val ); +} +/* Function : stop_time + This function will be called right after ending the timed portion of the benchmark. + + Implementation may be capturing a system timer (as implemented in the example code) + or other system parameters - e.g. reading the current value of cpu cycles counter. +*/ +void stop_time(void) { + GETMYTIME(&stop_time_val ); +} +/* Function : get_time + Return an abstract "ticks" number that signifies time on the system. + + Actual value returned may be cpu cycles, milliseconds or any other value, + as long as it can be converted to seconds by <time_in_secs>. + This methodology is taken to accomodate any hardware or simulated platform. + The sample implementation returns millisecs by default, + and the resolution is controlled by <TIMER_RES_DIVIDER> +*/ +CORE_TICKS get_time(void) { + CORE_TICKS elapsed=(CORE_TICKS)(MYTIMEDIFF(stop_time_val, start_time_val)); + return elapsed; +} +/* Function : time_in_secs + Convert the value returned by get_time to seconds. + + The <secs_ret> type is used to accomodate systems with no support for floating point. + Default implementation implemented by the EE_TICKS_PER_SEC macro above. +*/ +secs_ret time_in_secs(CORE_TICKS ticks) { + secs_ret retval=((secs_ret)ticks) / (secs_ret)EE_TICKS_PER_SEC; + return retval; +} + +ee_u32 default_num_contexts=1; + +/* Function : portable_init + Target specific initialization code + Test for some common mistakes. +*/ +void portable_init(core_portable *p, int *argc, char *argv[]) +{ + //#error "Call board initialization routines in portable init (if needed), in particular initialize UART!\n" + if (sizeof(ee_ptr_int) != sizeof(ee_u8 *)) { + ee_printf("ERROR! Please define ee_ptr_int to a type that holds a pointer!\n"); + } + if (sizeof(ee_u32) != 4) { + ee_printf("ERROR! Please define ee_u32 to a 32b unsigned type!\n"); + } + p->portable_id=1; +} +/* Function : portable_fini + Target specific final code +*/ +void portable_fini(core_portable *p) +{ + p->portable_id=0; +} + +