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Merge pull request #1214 from Dolu1990/memspeed 

Improve bios memspeed performances
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enjoy-digital 2022-02-18 16:30:30 +01:00 committed by GitHub
parent 3510daaf0c ea6cadf7b2
commit fde7fc87a3
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 21 additions and 6 deletions
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27
litex/soc/software/libbase/memtest.c
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@ -262,6 +262,9 @@ void memspeed(unsigned int *addr, unsigned long size, bool read_only, bool rando
unsigned long read_speed; unsigned long read_speed;
__attribute__((unused)) unsigned long data; __attribute__((unused)) unsigned long data;
const unsigned int sz = sizeof(unsigned long); const unsigned int sz = sizeof(unsigned long);
int burst_size = 4;
volatile unsigned long *ptr, *ptr_max = (volatile unsigned long )(((char *)array) + size - sz*burst_size);
printf("Memspeed at %p (", addr); printf("Memspeed at %p (", addr);
if (random) if (random)
@ -281,9 +284,16 @@ void memspeed(unsigned int *addr, unsigned long size, bool read_only, bool rando
if (!read_only) { if (!read_only) {
timer0_update_value_write(1); timer0_update_value_write(1);
start = timer0_value_read(); start = timer0_value_read();
for(i = 0; i < size/sz; i++) {
array[i] = -1ul; ptr = array;
} do{
ptr[0] = -1ul;
ptr[1] = -1ul;
ptr[2] = -1ul;
ptr[3] = -1ul;
ptr += burst_size;
} while(ptr <= ptr_max);
timer0_update_value_write(1); timer0_update_value_write(1);
end = timer0_value_read(); end = timer0_value_read();
uint64_t numerator = ((uint64_t)size)*((uint64_t)CONFIG_CLOCK_FREQUENCY); uint64_t numerator = ((uint64_t)size)*((uint64_t)CONFIG_CLOCK_FREQUENCY);
@ -311,9 +321,14 @@ void memspeed(unsigned int *addr, unsigned long size, bool read_only, bool rando
data = array[seed_32 % num]; data = array[seed_32 % num];
} }
} else { } else {
for (i = 0; i < size/sz; i++) { ptr = array;
data = array[i]; do{
} data = ptr[0];
data = ptr[1];
data = ptr[2];
data = ptr[3];
ptr += burst_size;
} while(ptr <= ptr_max);
} }
timer0_update_value_write(1); timer0_update_value_write(1);