u-boot/drivers/ram/stm32mp1/stm32mp1_tests.c
Patrick Delaunay 0d44752442 stm32mp1: ram: add tests in DDR interactive mode
Add command tests for DDR interactive mode, used during
board bring-up or with CubeMX DDR tools to verify the
DDR configuration.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-05-23 11:38:11 +02:00

1426 lines
36 KiB
C

// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
/*
* Copyright (C) 2019, STMicroelectronics - All Rights Reserved
*/
#include <common.h>
#include <console.h>
#include <asm/io.h>
#include <linux/log2.h>
#include "stm32mp1_tests.h"
#define ADDR_INVALID 0xFFFFFFFF
DECLARE_GLOBAL_DATA_PTR;
static int get_bufsize(char *string, int argc, char *argv[], int arg_nb,
size_t *bufsize, size_t default_size)
{
unsigned long value;
if (argc > arg_nb) {
if (strict_strtoul(argv[arg_nb], 0, &value) < 0) {
sprintf(string, "invalid %d parameter %s",
arg_nb, argv[arg_nb]);
return -1;
}
if (value > STM32_DDR_SIZE || value == 0) {
sprintf(string, "invalid size %s", argv[arg_nb]);
return -1;
}
if (value & 0x3) {
sprintf(string, "unaligned size %s",
argv[arg_nb]);
return -1;
}
*bufsize = value;
} else {
if (default_size != STM32_DDR_SIZE)
*bufsize = default_size;
else
*bufsize = get_ram_size((long *)STM32_DDR_BASE,
STM32_DDR_SIZE);
}
return 0;
}
static int get_nb_loop(char *string, int argc, char *argv[], int arg_nb,
u32 *nb_loop, u32 default_nb_loop)
{
unsigned long value;
if (argc > arg_nb) {
if (strict_strtoul(argv[arg_nb], 0, &value) < 0) {
sprintf(string, "invalid %d parameter %s",
arg_nb, argv[arg_nb]);
return -1;
}
if (value == 0)
printf("WARNING: infinite loop requested\n");
*nb_loop = value;
} else {
*nb_loop = default_nb_loop;
}
return 0;
}
static int get_addr(char *string, int argc, char *argv[], int arg_nb,
u32 *addr)
{
unsigned long value;
if (argc > arg_nb) {
if (strict_strtoul(argv[arg_nb], 16, &value) < 0) {
sprintf(string, "invalid %d parameter %s",
arg_nb, argv[arg_nb]);
return -1;
}
if (value < STM32_DDR_BASE) {
sprintf(string, "too low address %s", argv[arg_nb]);
return -1;
}
if (value & 0x3 && value != ADDR_INVALID) {
sprintf(string, "unaligned address %s",
argv[arg_nb]);
return -1;
}
*addr = value;
} else {
*addr = STM32_DDR_BASE;
}
return 0;
}
static int get_pattern(char *string, int argc, char *argv[], int arg_nb,
u32 *pattern, u32 default_pattern)
{
unsigned long value;
if (argc > arg_nb) {
if (strict_strtoul(argv[arg_nb], 16, &value) < 0) {
sprintf(string, "invalid %d parameter %s",
arg_nb, argv[arg_nb]);
return -1;
}
*pattern = value;
} else {
*pattern = default_pattern;
}
return 0;
}
static u32 check_addr(u32 addr, u32 value)
{
u32 data = readl(addr);
if (value != data) {
printf("0x%08x: 0x%08x <=> 0x%08x", addr, data, value);
data = readl(addr);
printf("(2nd read: 0x%08x)", data);
if (value == data)
printf("- read error");
else
printf("- write error");
printf("\n");
return -1;
}
return 0;
}
static int progress(u32 offset)
{
if (!(offset & 0xFFFFFF)) {
putc('.');
if (ctrlc()) {
printf("\ntest interrupted!\n");
return 1;
}
}
return 0;
}
static int test_loop_end(u32 *loop, u32 nb_loop, u32 progress)
{
(*loop)++;
if (nb_loop && *loop >= nb_loop)
return 1;
if ((*loop) % progress)
return 0;
/* allow to interrupt the test only for progress step */
if (ctrlc()) {
printf("test interrupted!\n");
return 1;
}
printf("loop #%d\n", *loop);
return 0;
}
/**********************************************************************
*
* Function: memTestDataBus()
*
* Description: Test the data bus wiring in a memory region by
* performing a walking 1's test at a fixed address
* within that region. The address is selected
* by the caller.
*
* Notes:
*
* Returns: 0 if the test succeeds.
* A non-zero result is the first pattern that failed.
*
**********************************************************************/
static u32 databus(u32 *address)
{
u32 pattern;
u32 read_value;
/* Perform a walking 1's test at the given address. */
for (pattern = 1; pattern != 0; pattern <<= 1) {
/* Write the test pattern. */
writel(pattern, address);
/* Read it back (immediately is okay for this test). */
read_value = readl(address);
debug("%x: %x <=> %x\n",
(u32)address, read_value, pattern);
if (read_value != pattern)
return pattern;
}
return 0;
}
/**********************************************************************
*
* Function: memTestAddressBus()
*
* Description: Test the address bus wiring in a memory region by
* performing a walking 1's test on the relevant bits
* of the address and checking for aliasing. This test
* will find single-bit address failures such as stuck
* -high, stuck-low, and shorted pins. The base address
* and size of the region are selected by the caller.
*
* Notes: For best results, the selected base address should
* have enough LSB 0's to guarantee single address bit
* changes. For example, to test a 64-Kbyte region,
* select a base address on a 64-Kbyte boundary. Also,
* select the region size as a power-of-two--if at all
* possible.
*
* Returns: NULL if the test succeeds.
* A non-zero result is the first address at which an
* aliasing problem was uncovered. By examining the
* contents of memory, it may be possible to gather
* additional information about the problem.
*
**********************************************************************/
static u32 *addressbus(u32 *address, u32 nb_bytes)
{
u32 mask = (nb_bytes / sizeof(u32) - 1);
u32 offset;
u32 test_offset;
u32 read_value;
u32 pattern = 0xAAAAAAAA;
u32 antipattern = 0x55555555;
/* Write the default pattern at each of the power-of-two offsets. */
for (offset = 1; (offset & mask) != 0; offset <<= 1)
writel(pattern, &address[offset]);
/* Check for address bits stuck high. */
test_offset = 0;
writel(antipattern, &address[test_offset]);
for (offset = 1; (offset & mask) != 0; offset <<= 1) {
read_value = readl(&address[offset]);
debug("%x: %x <=> %x\n",
(u32)&address[offset], read_value, pattern);
if (read_value != pattern)
return &address[offset];
}
writel(pattern, &address[test_offset]);
/* Check for address bits stuck low or shorted. */
for (test_offset = 1; (test_offset & mask) != 0; test_offset <<= 1) {
writel(antipattern, &address[test_offset]);
if (readl(&address[0]) != pattern)
return &address[test_offset];
for (offset = 1; (offset & mask) != 0; offset <<= 1) {
if (readl(&address[offset]) != pattern &&
offset != test_offset)
return &address[test_offset];
}
writel(pattern, &address[test_offset]);
}
return NULL;
}
/**********************************************************************
*
* Function: memTestDevice()
*
* Description: Test the integrity of a physical memory device by
* performing an increment/decrement test over the
* entire region. In the process every storage bit
* in the device is tested as a zero and a one. The
* base address and the size of the region are
* selected by the caller.
*
* Notes:
*
* Returns: NULL if the test succeeds.
*
* A non-zero result is the first address at which an
* incorrect value was read back. By examining the
* contents of memory, it may be possible to gather
* additional information about the problem.
*
**********************************************************************/
static u32 *memdevice(u32 *address, u32 nb_bytes)
{
u32 offset;
u32 nb_words = nb_bytes / sizeof(u32);
u32 pattern;
u32 antipattern;
puts("Fill with pattern");
/* Fill memory with a known pattern. */
for (pattern = 1, offset = 0; offset < nb_words; pattern++, offset++) {
writel(pattern, &address[offset]);
if (progress(offset))
return NULL;
}
puts("\nCheck and invert pattern");
/* Check each location and invert it for the second pass. */
for (pattern = 1, offset = 0; offset < nb_words; pattern++, offset++) {
if (readl(&address[offset]) != pattern)
return &address[offset];
antipattern = ~pattern;
writel(antipattern, &address[offset]);
if (progress(offset))
return NULL;
}
puts("\nCheck inverted pattern");
/* Check each location for the inverted pattern and zero it. */
for (pattern = 1, offset = 0; offset < nb_words; pattern++, offset++) {
antipattern = ~pattern;
if (readl(&address[offset]) != antipattern)
return &address[offset];
if (progress(offset))
return NULL;
}
printf("\n");
return NULL;
}
static enum test_result databuswalk0(struct stm32mp1_ddrctl *ctl,
struct stm32mp1_ddrphy *phy,
char *string, int argc, char *argv[])
{
int i;
u32 loop = 0, nb_loop;
u32 addr;
u32 error = 0;
u32 data;
if (get_nb_loop(string, argc, argv, 0, &nb_loop, 100))
return TEST_ERROR;
if (get_addr(string, argc, argv, 1, &addr))
return TEST_ERROR;
printf("running %d loops at 0x%x\n", nb_loop, addr);
while (!error) {
for (i = 0; i < 32; i++)
writel(~(1 << i), addr + 4 * i);
for (i = 0; i < 32; i++) {
data = readl(addr + 4 * i);
if (~(1 << i) != data) {
error |= 1 << i;
debug("%x: error %x expected %x => error:%x\n",
addr + 4 * i, data, ~(1 << i), error);
}
}
if (test_loop_end(&loop, nb_loop, 1000))
break;
for (i = 0; i < 32; i++)
writel(0, addr + 4 * i);
}
if (error) {
sprintf(string, "loop %d: error for bits 0x%x",
loop, error);
return TEST_FAILED;
}
sprintf(string, "no error for %d loops", loop);
return TEST_PASSED;
}
static enum test_result databuswalk1(struct stm32mp1_ddrctl *ctl,
struct stm32mp1_ddrphy *phy,
char *string, int argc, char *argv[])
{
int i;
u32 loop = 0, nb_loop;
u32 addr;
u32 error = 0;
u32 data;
if (get_nb_loop(string, argc, argv, 0, &nb_loop, 100))
return TEST_ERROR;
if (get_addr(string, argc, argv, 1, &addr))
return TEST_ERROR;
printf("running %d loops at 0x%x\n", nb_loop, addr);
while (!error) {
for (i = 0; i < 32; i++)
writel(1 << i, addr + 4 * i);
for (i = 0; i < 32; i++) {
data = readl(addr + 4 * i);
if ((1 << i) != data) {
error |= 1 << i;
debug("%x: error %x expected %x => error:%x\n",
addr + 4 * i, data, (1 << i), error);
}
}
if (test_loop_end(&loop, nb_loop, 1000))
break;
for (i = 0; i < 32; i++)
writel(0, addr + 4 * i);
}
if (error) {
sprintf(string, "loop %d: error for bits 0x%x",
loop, error);
return TEST_FAILED;
}
sprintf(string, "no error for %d loops", loop);
return TEST_PASSED;
}
static enum test_result test_databus(struct stm32mp1_ddrctl *ctl,
struct stm32mp1_ddrphy *phy,
char *string, int argc, char *argv[])
{
u32 addr;
u32 error;
if (get_addr(string, argc, argv, 0, &addr))
return TEST_ERROR;
error = databus((u32 *)addr);
if (error) {
sprintf(string, "0x%x: error for bits 0x%x",
addr, error);
return TEST_FAILED;
}
sprintf(string, "address 0x%x", addr);
return TEST_PASSED;
}
static enum test_result test_addressbus(struct stm32mp1_ddrctl *ctl,
struct stm32mp1_ddrphy *phy,
char *string, int argc, char *argv[])
{
u32 addr;
u32 bufsize;
u32 error;
if (get_bufsize(string, argc, argv, 0, &bufsize, 4 * 1024))
return TEST_ERROR;
if (!is_power_of_2(bufsize)) {
sprintf(string, "size 0x%x is not a power of 2",
(u32)bufsize);
return TEST_ERROR;
}
if (get_addr(string, argc, argv, 1, &addr))
return TEST_ERROR;
error = (u32)addressbus((u32 *)addr, bufsize);
if (error) {
sprintf(string, "0x%x: error for address 0x%x",
addr, error);
return TEST_FAILED;
}
sprintf(string, "address 0x%x, size 0x%x",
addr, bufsize);
return TEST_PASSED;
}
static enum test_result test_memdevice(struct stm32mp1_ddrctl *ctl,
struct stm32mp1_ddrphy *phy,
char *string, int argc, char *argv[])
{
u32 addr;
size_t bufsize;
u32 error;
if (get_bufsize(string, argc, argv, 0, &bufsize, 4 * 1024))
return TEST_ERROR;
if (get_addr(string, argc, argv, 1, &addr))
return TEST_ERROR;
error = (u32)memdevice((u32 *)addr, (unsigned long)bufsize);
if (error) {
sprintf(string, "0x%x: error for address 0x%x",
addr, error);
return TEST_FAILED;
}
sprintf(string, "address 0x%x, size 0x%x",
addr, bufsize);
return TEST_PASSED;
}
/**********************************************************************
*
* Function: sso
*
* Description: Test the Simultaneous Switching Output.
* Verifies succes sive reads and writes to the same memory word,
* holding one bit constant while toggling all other data bits
* simultaneously
* => stress the data bus over an address range
*
* The CPU writes to each address in the given range.
* For each bit, first the CPU holds the bit at 1 while
* toggling the other bits, and then the CPU holds the bit at 0
* while toggling the other bits.
* After each write, the CPU reads the address that was written
* to verify that it contains the correct data
*
**********************************************************************/
static enum test_result test_sso(struct stm32mp1_ddrctl *ctl,
struct stm32mp1_ddrphy *phy,
char *string, int argc, char *argv[])
{
int i, j;
u32 addr, bufsize, remaining, offset;
u32 error = 0;
u32 data;
if (get_bufsize(string, argc, argv, 0, &bufsize, 4))
return TEST_ERROR;
if (get_addr(string, argc, argv, 1, &addr))
return TEST_ERROR;
printf("running sso at 0x%x length 0x%x", addr, bufsize);
offset = addr;
remaining = bufsize;
while (remaining) {
for (i = 0; i < 32; i++) {
/* write pattern. */
for (j = 0; j < 6; j++) {
switch (j) {
case 0:
case 2:
data = 1 << i;
break;
case 3:
case 5:
data = ~(1 << i);
break;
case 1:
data = ~0x0;
break;
case 4:
data = 0x0;
break;
}
writel(data, offset);
error = check_addr(offset, data);
if (error)
goto end;
}
}
offset += 4;
remaining -= 4;
if (progress(offset << 7))
goto end;
}
puts("\n");
end:
if (error) {
sprintf(string, "error for pattern 0x%x @0x%x",
data, offset);
return TEST_FAILED;
}
sprintf(string, "no error for sso at 0x%x length 0x%x", addr, bufsize);
return TEST_PASSED;
}
/**********************************************************************
*
* Function: Random
*
* Description: Verifies r/w with pseudo-ramdom value on one region
* + write the region (individual access)
* + memcopy to the 2nd region (try to use burst)
* + verify the 2 regions
*
**********************************************************************/
static enum test_result test_random(struct stm32mp1_ddrctl *ctl,
struct stm32mp1_ddrphy *phy,
char *string, int argc, char *argv[])
{
u32 addr, offset, value = 0;
size_t bufsize;
u32 loop = 0, nb_loop;
u32 error = 0;
unsigned int seed;
if (get_bufsize(string, argc, argv, 0, &bufsize, 4 * 1024))
return TEST_ERROR;
if (get_nb_loop(string, argc, argv, 1, &nb_loop, 1))
return TEST_ERROR;
if (get_addr(string, argc, argv, 2, &addr))
return TEST_ERROR;
printf("running %d loops at 0x%x\n", nb_loop, addr);
while (!error) {
seed = rand();
for (offset = addr; offset < addr + bufsize; offset += 4)
writel(rand(), offset);
memcpy((void *)addr + bufsize, (void *)addr, bufsize);
srand(seed);
for (offset = addr; offset < addr + 2 * bufsize; offset += 4) {
if (offset == (addr + bufsize))
srand(seed);
value = rand();
error = check_addr(offset, value);
if (error)
break;
if (progress(offset))
return TEST_FAILED;
}
if (test_loop_end(&loop, nb_loop, 100))
break;
}
if (error) {
sprintf(string,
"loop %d: error for address 0x%x: 0x%x expected 0x%x",
loop, offset, readl(offset), value);
return TEST_FAILED;
}
sprintf(string, "no error for %d loops, size 0x%x",
loop, bufsize);
return TEST_PASSED;
}
/**********************************************************************
*
* Function: noise
*
* Description: Verifies r/w while forcing switching of all data bus lines.
* optimised 4 iteration write/read/write/read cycles...
* for pattern and inversed pattern
*
**********************************************************************/
void do_noise(u32 addr, u32 pattern, u32 *result)
{
__asm__("push {R0-R11}");
__asm__("mov r0, %0" : : "r" (addr));
__asm__("mov r1, %0" : : "r" (pattern));
__asm__("mov r11, %0" : : "r" (result));
__asm__("mvn r2, r1");
__asm__("str r1, [r0]");
__asm__("ldr r3, [r0]");
__asm__("str r2, [r0]");
__asm__("ldr r4, [r0]");
__asm__("str r1, [r0]");
__asm__("ldr r5, [r0]");
__asm__("str r2, [r0]");
__asm__("ldr r6, [r0]");
__asm__("str r1, [r0]");
__asm__("ldr r7, [r0]");
__asm__("str r2, [r0]");
__asm__("ldr r8, [r0]");
__asm__("str r1, [r0]");
__asm__("ldr r9, [r0]");
__asm__("str r2, [r0]");
__asm__("ldr r10, [r0]");
__asm__("stmia R11!, {R3-R10}");
__asm__("pop {R0-R11}");
}
static enum test_result test_noise(struct stm32mp1_ddrctl *ctl,
struct stm32mp1_ddrphy *phy,
char *string, int argc, char *argv[])
{
u32 addr, pattern;
u32 result[8];
int i;
enum test_result res = TEST_PASSED;
if (get_pattern(string, argc, argv, 0, &pattern, 0xFFFFFFFF))
return TEST_ERROR;
if (get_addr(string, argc, argv, 1, &addr))
return TEST_ERROR;
printf("running noise for 0x%x at 0x%x\n", pattern, addr);
do_noise(addr, pattern, result);
for (i = 0; i < 0x8;) {
if (check_addr((u32)&result[i++], pattern))
res = TEST_FAILED;
if (check_addr((u32)&result[i++], ~pattern))
res = TEST_FAILED;
}
return res;
}
/**********************************************************************
*
* Function: noise_burst
*
* Description: Verifies r/w while forcing switching of all data bus lines.
* optimised write loop witrh store multiple to use burst
* for pattern and inversed pattern
*
**********************************************************************/
void do_noise_burst(u32 addr, u32 pattern, size_t bufsize)
{
__asm__("push {R0-R9}");
__asm__("mov r0, %0" : : "r" (addr));
__asm__("mov r1, %0" : : "r" (pattern));
__asm__("mov r9, %0" : : "r" (bufsize));
__asm__("mvn r2, r1");
__asm__("mov r3, r1");
__asm__("mov r4, r2");
__asm__("mov r5, r1");
__asm__("mov r6, r2");
__asm__("mov r7, r1");
__asm__("mov r8, r2");
__asm__("loop1:");
__asm__("stmia R0!, {R1-R8}");
__asm__("stmia R0!, {R1-R8}");
__asm__("stmia R0!, {R1-R8}");
__asm__("stmia R0!, {R1-R8}");
__asm__("subs r9, r9, #128");
__asm__("bge loop1");
__asm__("pop {R0-R9}");
}
/* chunk size enough to allow interruption with Ctrl-C*/
#define CHUNK_SIZE 0x8000000
static enum test_result test_noise_burst(struct stm32mp1_ddrctl *ctl,
struct stm32mp1_ddrphy *phy,
char *string, int argc, char *argv[])
{
u32 addr, offset, pattern;
size_t bufsize, remaining, size;
int i;
enum test_result res = TEST_PASSED;
if (get_bufsize(string, argc, argv, 0, &bufsize, 4 * 1024))
return TEST_ERROR;
if (get_pattern(string, argc, argv, 1, &pattern, 0xFFFFFFFF))
return TEST_ERROR;
if (get_addr(string, argc, argv, 2, &addr))
return TEST_ERROR;
printf("running noise burst for 0x%x at 0x%x + 0x%x",
pattern, addr, bufsize);
offset = addr;
remaining = bufsize;
size = CHUNK_SIZE;
while (remaining) {
if (remaining < size)
size = remaining;
do_noise_burst(offset, pattern, size);
remaining -= size;
offset += size;
if (progress(offset)) {
res = TEST_FAILED;
goto end;
}
}
puts("\ncheck buffer");
for (i = 0; i < bufsize;) {
if (check_addr(addr + i, pattern))
res = TEST_FAILED;
i += 4;
if (check_addr(addr + i, ~pattern))
res = TEST_FAILED;
i += 4;
if (progress(i)) {
res = TEST_FAILED;
goto end;
}
}
end:
puts("\n");
return res;
}
/**********************************************************************
*
* Function: pattern test
*
* Description: optimized loop for read/write pattern (array of 8 u32)
*
**********************************************************************/
#define PATTERN_SIZE 8
static enum test_result test_loop(const u32 *pattern, u32 *address,
const u32 bufsize)
{
int i;
int j;
enum test_result res = TEST_PASSED;
u32 *offset, testsize, remaining;
offset = address;
remaining = bufsize;
while (remaining) {
testsize = bufsize > 0x1000000 ? 0x1000000 : bufsize;
__asm__("push {R0-R10}");
__asm__("mov r0, %0" : : "r" (pattern));
__asm__("mov r1, %0" : : "r" (offset));
__asm__("mov r2, %0" : : "r" (testsize));
__asm__("ldmia r0!, {R3-R10}");
__asm__("loop2:");
__asm__("stmia r1!, {R3-R10}");
__asm__("stmia r1!, {R3-R10}");
__asm__("stmia r1!, {R3-R10}");
__asm__("stmia r1!, {R3-R10}");
__asm__("subs r2, r2, #8");
__asm__("bge loop2");
__asm__("pop {R0-R10}");
offset += testsize;
remaining -= testsize;
if (progress((u32)offset)) {
res = TEST_FAILED;
goto end;
}
}
puts("\ncheck buffer");
for (i = 0; i < bufsize; i += PATTERN_SIZE * 4) {
for (j = 0; j < PATTERN_SIZE; j++, address++)
if (check_addr((u32)address, pattern[j])) {
res = TEST_FAILED;
goto end;
}
if (progress(i)) {
res = TEST_FAILED;
goto end;
}
}
end:
puts("\n");
return res;
}
const u32 pattern_div1_x16[PATTERN_SIZE] = {
0x0000FFFF, 0x0000FFFF, 0x0000FFFF, 0x0000FFFF,
0x0000FFFF, 0x0000FFFF, 0x0000FFFF, 0x0000FFFF
};
const u32 pattern_div2_x16[PATTERN_SIZE] = {
0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000000,
0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000000
};
const u32 pattern_div4_x16[PATTERN_SIZE] = {
0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000,
0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000
};
const u32 pattern_div4_x32[PATTERN_SIZE] = {
0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
0x00000000, 0x00000000, 0x00000000, 0x00000000
};
const u32 pattern_mostly_zero_x16[PATTERN_SIZE] = {
0x00000000, 0x00000000, 0x00000000, 0x0000FFFF,
0x00000000, 0x00000000, 0x00000000, 0x00000000
};
const u32 pattern_mostly_zero_x32[PATTERN_SIZE] = {
0x00000000, 0x00000000, 0x00000000, 0xFFFFFFFF,
0x00000000, 0x00000000, 0x00000000, 0x00000000
};
const u32 pattern_mostly_one_x16[PATTERN_SIZE] = {
0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x0000FFFF,
0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF
};
const u32 pattern_mostly_one_x32[PATTERN_SIZE] = {
0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000,
0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF
};
#define NB_PATTERN 5
static enum test_result test_freq_pattern(struct stm32mp1_ddrctl *ctl,
struct stm32mp1_ddrphy *phy,
char *string, int argc, char *argv[])
{
const u32 * const patterns_x16[NB_PATTERN] = {
pattern_div1_x16,
pattern_div2_x16,
pattern_div4_x16,
pattern_mostly_zero_x16,
pattern_mostly_one_x16,
};
const u32 * const patterns_x32[NB_PATTERN] = {
pattern_div2_x16,
pattern_div4_x16,
pattern_div4_x32,
pattern_mostly_zero_x32,
pattern_mostly_one_x32
};
const char *patterns_comments[NB_PATTERN] = {
"switching at frequency F/1",
"switching at frequency F/2",
"switching at frequency F/4",
"mostly zero",
"mostly one"
};
enum test_result res = TEST_PASSED, pattern_res;
int i, bus_width;
const u32 **patterns;
u32 bufsize;
if (get_bufsize(string, argc, argv, 0, &bufsize, 4 * 1024))
return TEST_ERROR;
switch (readl(&ctl->mstr) & DDRCTRL_MSTR_DATA_BUS_WIDTH_MASK) {
case DDRCTRL_MSTR_DATA_BUS_WIDTH_HALF:
case DDRCTRL_MSTR_DATA_BUS_WIDTH_QUARTER:
bus_width = 16;
break;
default:
bus_width = 32;
break;
}
printf("running test pattern at 0x%08x length 0x%x width = %d\n",
STM32_DDR_BASE, bufsize, bus_width);
patterns =
(const u32 **)(bus_width == 16 ? patterns_x16 : patterns_x32);
for (i = 0; i < NB_PATTERN; i++) {
printf("test data pattern %s:", patterns_comments[i]);
pattern_res = test_loop(patterns[i], (u32 *)STM32_DDR_BASE,
bufsize);
if (pattern_res != TEST_PASSED) {
printf("Failed\n");
return pattern_res;
}
printf("Passed\n");
}
return res;
}
/**********************************************************************
*
* Function: pattern test with size
*
* Description: loop for write pattern
*
**********************************************************************/
static enum test_result test_loop_size(const u32 *pattern, u32 size,
u32 *address,
const u32 bufsize)
{
int i, j;
enum test_result res = TEST_PASSED;
u32 *p = address;
for (i = 0; i < bufsize; i += size * 4) {
for (j = 0; j < size ; j++, p++)
*p = pattern[j];
if (progress(i)) {
res = TEST_FAILED;
goto end;
}
}
puts("\ncheck buffer");
p = address;
for (i = 0; i < bufsize; i += size * 4) {
for (j = 0; j < size; j++, p++)
if (check_addr((u32)p, pattern[j])) {
res = TEST_FAILED;
goto end;
}
if (progress(i)) {
res = TEST_FAILED;
goto end;
}
}
end:
puts("\n");
return res;
}
static enum test_result test_checkboard(struct stm32mp1_ddrctl *ctl,
struct stm32mp1_ddrphy *phy,
char *string, int argc, char *argv[])
{
enum test_result res = TEST_PASSED;
u32 bufsize, nb_loop, loop = 0, addr;
int i;
u32 checkboard[2] = {0x55555555, 0xAAAAAAAA};
if (get_bufsize(string, argc, argv, 0, &bufsize, 4 * 1024))
return TEST_ERROR;
if (get_nb_loop(string, argc, argv, 1, &nb_loop, 1))
return TEST_ERROR;
if (get_addr(string, argc, argv, 2, &addr))
return TEST_ERROR;
printf("running %d loops at 0x%08x length 0x%x\n",
nb_loop, addr, bufsize);
while (1) {
for (i = 0; i < 2; i++) {
res = test_loop_size(checkboard, 2, (u32 *)addr,
bufsize);
if (res)
return res;
checkboard[0] = ~checkboard[0];
checkboard[1] = ~checkboard[1];
}
if (test_loop_end(&loop, nb_loop, 1))
break;
}
sprintf(string, "no error for %d loops at 0x%08x length 0x%x",
loop, addr, bufsize);
return res;
}
static enum test_result test_blockseq(struct stm32mp1_ddrctl *ctl,
struct stm32mp1_ddrphy *phy,
char *string, int argc, char *argv[])
{
enum test_result res = TEST_PASSED;
u32 bufsize, nb_loop, loop = 0, addr, value;
int i;
if (get_bufsize(string, argc, argv, 0, &bufsize, 4 * 1024))
return TEST_ERROR;
if (get_nb_loop(string, argc, argv, 1, &nb_loop, 1))
return TEST_ERROR;
if (get_addr(string, argc, argv, 2, &addr))
return TEST_ERROR;
printf("running %d loops at 0x%08x length 0x%x\n",
nb_loop, addr, bufsize);
while (1) {
for (i = 0; i < 256; i++) {
value = i | i << 8 | i << 16 | i << 24;
printf("pattern = %08x", value);
res = test_loop_size(&value, 1, (u32 *)addr, bufsize);
if (res != TEST_PASSED)
return res;
}
if (test_loop_end(&loop, nb_loop, 1))
break;
}
sprintf(string, "no error for %d loops at 0x%08x length 0x%x",
loop, addr, bufsize);
return res;
}
static enum test_result test_walkbit0(struct stm32mp1_ddrctl *ctl,
struct stm32mp1_ddrphy *phy,
char *string, int argc, char *argv[])
{
enum test_result res = TEST_PASSED;
u32 bufsize, nb_loop, loop = 0, addr, value;
int i;
if (get_bufsize(string, argc, argv, 0, &bufsize, 4 * 1024))
return TEST_ERROR;
if (get_nb_loop(string, argc, argv, 1, &nb_loop, 1))
return TEST_ERROR;
if (get_addr(string, argc, argv, 2, &addr))
return TEST_ERROR;
printf("running %d loops at 0x%08x length 0x%x\n",
nb_loop, addr, bufsize);
while (1) {
for (i = 0; i < 64; i++) {
if (i < 32)
value = 1 << i;
else
value = 1 << (63 - i);
printf("pattern = %08x", value);
res = test_loop_size(&value, 1, (u32 *)addr, bufsize);
if (res != TEST_PASSED)
return res;
}
if (test_loop_end(&loop, nb_loop, 1))
break;
}
sprintf(string, "no error for %d loops at 0x%08x length 0x%x",
loop, addr, bufsize);
return res;
}
static enum test_result test_walkbit1(struct stm32mp1_ddrctl *ctl,
struct stm32mp1_ddrphy *phy,
char *string, int argc, char *argv[])
{
enum test_result res = TEST_PASSED;
u32 bufsize, nb_loop, loop = 0, addr, value;
int i;
if (get_bufsize(string, argc, argv, 0, &bufsize, 4 * 1024))
return TEST_ERROR;
if (get_nb_loop(string, argc, argv, 1, &nb_loop, 1))
return TEST_ERROR;
if (get_addr(string, argc, argv, 2, &addr))
return TEST_ERROR;
printf("running %d loops at 0x%08x length 0x%x\n",
nb_loop, addr, bufsize);
while (1) {
for (i = 0; i < 64; i++) {
if (i < 32)
value = ~(1 << i);
else
value = ~(1 << (63 - i));
printf("pattern = %08x", value);
res = test_loop_size(&value, 1, (u32 *)addr, bufsize);
if (res != TEST_PASSED)
return res;
}
if (test_loop_end(&loop, nb_loop, 1))
break;
}
sprintf(string, "no error for %d loops at 0x%08x length 0x%x",
loop, addr, bufsize);
return res;
}
/*
* try to catch bad bits which are dependent on the current values of
* surrounding bits in either the same word32
*/
static enum test_result test_bitspread(struct stm32mp1_ddrctl *ctl,
struct stm32mp1_ddrphy *phy,
char *string, int argc, char *argv[])
{
enum test_result res = TEST_PASSED;
u32 bufsize, nb_loop, loop = 0, addr, bitspread[4];
int i, j;
if (get_bufsize(string, argc, argv, 0, &bufsize, 4 * 1024))
return TEST_ERROR;
if (get_nb_loop(string, argc, argv, 1, &nb_loop, 1))
return TEST_ERROR;
if (get_addr(string, argc, argv, 2, &addr))
return TEST_ERROR;
printf("running %d loops at 0x%08x length 0x%x\n",
nb_loop, addr, bufsize);
while (1) {
for (i = 1; i < 32; i++) {
for (j = 0; j < i; j++) {
if (i < 32)
bitspread[0] = (1 << i) | (1 << j);
else
bitspread[0] = (1 << (63 - i)) |
(1 << (63 - j));
bitspread[1] = bitspread[0];
bitspread[2] = ~bitspread[0];
bitspread[3] = ~bitspread[0];
printf("pattern = %08x", bitspread[0]);
res = test_loop_size(bitspread, 4, (u32 *)addr,
bufsize);
if (res != TEST_PASSED)
return res;
}
}
if (test_loop_end(&loop, nb_loop, 1))
break;
}
sprintf(string, "no error for %d loops at 0x%08x length 0x%x",
loop, addr, bufsize);
return res;
}
static enum test_result test_bitflip(struct stm32mp1_ddrctl *ctl,
struct stm32mp1_ddrphy *phy,
char *string, int argc, char *argv[])
{
enum test_result res = TEST_PASSED;
u32 bufsize, nb_loop, loop = 0, addr;
int i;
u32 bitflip[4];
if (get_bufsize(string, argc, argv, 0, &bufsize, 4 * 1024))
return TEST_ERROR;
if (get_nb_loop(string, argc, argv, 1, &nb_loop, 1))
return TEST_ERROR;
if (get_addr(string, argc, argv, 2, &addr))
return TEST_ERROR;
printf("running %d loops at 0x%08x length 0x%x\n",
nb_loop, addr, bufsize);
while (1) {
for (i = 0; i < 32; i++) {
bitflip[0] = 1 << i;
bitflip[1] = bitflip[0];
bitflip[2] = ~bitflip[0];
bitflip[3] = bitflip[2];
printf("pattern = %08x", bitflip[0]);
res = test_loop_size(bitflip, 4, (u32 *)addr, bufsize);
if (res != TEST_PASSED)
return res;
}
if (test_loop_end(&loop, nb_loop, 1))
break;
}
sprintf(string, "no error for %d loops at 0x%08x length 0x%x",
loop, addr, bufsize);
return res;
}
/**********************************************************************
*
* Function: infinite read access to DDR
*
* Description: continuous read the same pattern at the same address
*
**********************************************************************/
static enum test_result test_read(struct stm32mp1_ddrctl *ctl,
struct stm32mp1_ddrphy *phy,
char *string, int argc, char *argv[])
{
u32 *addr;
u32 data;
u32 loop = 0;
bool random = false;
if (get_addr(string, argc, argv, 0, (u32 *)&addr))
return TEST_ERROR;
if ((u32)addr == ADDR_INVALID) {
printf("random ");
random = true;
}
printf("running at 0x%08x\n", (u32)addr);
while (1) {
if (random)
addr = (u32 *)(STM32_DDR_BASE +
(rand() & (STM32_DDR_SIZE - 1) & ~0x3));
data = readl(addr);
if (test_loop_end(&loop, 0, 1000))
break;
}
sprintf(string, "0x%x: %x", (u32)addr, data);
return TEST_PASSED;
}
/**********************************************************************
*
* Function: infinite write access to DDR
*
* Description: continuous write the same pattern at the same address
*
**********************************************************************/
static enum test_result test_write(struct stm32mp1_ddrctl *ctl,
struct stm32mp1_ddrphy *phy,
char *string, int argc, char *argv[])
{
u32 *addr;
u32 data = 0xA5A5AA55;
u32 loop = 0;
bool random = false;
if (get_addr(string, argc, argv, 0, (u32 *)&addr))
return TEST_ERROR;
if ((u32)addr == ADDR_INVALID) {
printf("random ");
random = true;
}
printf("running at 0x%08x\n", (u32)addr);
while (1) {
if (random) {
addr = (u32 *)(STM32_DDR_BASE +
(rand() & (STM32_DDR_SIZE - 1) & ~0x3));
data = rand();
}
writel(data, addr);
if (test_loop_end(&loop, 0, 1000))
break;
}
sprintf(string, "0x%x: %x", (u32)addr, data);
return TEST_PASSED;
}
#define NB_TEST_INFINITE 2
static enum test_result test_all(struct stm32mp1_ddrctl *ctl,
struct stm32mp1_ddrphy *phy,
char *string, int argc, char *argv[])
{
enum test_result res = TEST_PASSED, result;
int i, nb_error = 0;
u32 loop = 0, nb_loop;
if (get_nb_loop(string, argc, argv, 0, &nb_loop, 1))
return TEST_ERROR;
while (!nb_error) {
/* execute all the test except the lasts which are infinite */
for (i = 1; i < test_nb - NB_TEST_INFINITE; i++) {
printf("execute %d:%s\n", (int)i, test[i].name);
result = test[i].fct(ctl, phy, string, 0, NULL);
printf("result %d:%s = ", (int)i, test[i].name);
if (result != TEST_PASSED) {
nb_error++;
res = TEST_FAILED;
puts("Failed");
} else {
puts("Passed");
}
puts("\n\n");
}
printf("loop %d: %d/%d test failed\n\n\n",
loop + 1, nb_error, test_nb - NB_TEST_INFINITE);
if (test_loop_end(&loop, nb_loop, 1))
break;
}
if (res != TEST_PASSED) {
sprintf(string, "loop %d: %d/%d test failed", loop, nb_error,
test_nb - NB_TEST_INFINITE);
} else {
sprintf(string, "loop %d: %d tests passed", loop,
test_nb - NB_TEST_INFINITE);
}
return res;
}
/****************************************************************
* TEST Description
****************************************************************/
const struct test_desc test[] = {
{test_all, "All", "[loop]", "Execute all tests", 1 },
{test_databus, "Simple DataBus", "[addr]",
"Verifies each data line by walking 1 on fixed address",
1
},
{databuswalk0, "DataBusWalking0", "[loop] [addr]",
"Verifies each data bus signal can be driven low (32 word burst)",
2
},
{databuswalk1, "DataBusWalking1", "[loop] [addr]",
"Verifies each data bus signal can be driven high (32 word burst)",
2
},
{test_addressbus, "AddressBus", "[size] [addr]",
"Verifies each relevant bits of the address and checking for aliasing",
2
},
{test_memdevice, "MemDevice", "[size] [addr]",
"Test the integrity of a physical memory (test every storage bit in the region)",
2
},
{test_sso, "SimultaneousSwitchingOutput", "[size] [addr] ",
"Stress the data bus over an address range",
2
},
{test_noise, "Noise", "[pattern] [addr]",
"Verifies r/w while forcing switching of all data bus lines.",
3
},
{test_noise_burst, "NoiseBurst", "[size] [pattern] [addr]",
"burst transfers while forcing switching of the data bus lines",
3
},
{test_random, "Random", "[size] [loop] [addr]",
"Verifies r/w and memcopy(burst for pseudo random value.",
3
},
{test_freq_pattern, "FrequencySelectivePattern ", "[size]",
"write & test patterns: Mostly Zero, Mostly One and F/n",
1
},
{test_blockseq, "BlockSequential", "[size] [loop] [addr]",
"test incremental pattern",
3
},
{test_checkboard, "Checkerboard", "[size] [loop] [addr]",
"test checker pattern",
3
},
{test_bitspread, "BitSpread", "[size] [loop] [addr]",
"test Bit Spread pattern",
3
},
{test_bitflip, "BitFlip", "[size] [loop] [addr]",
"test Bit Flip pattern",
3
},
{test_walkbit0, "WalkingOnes", "[size] [loop] [addr]",
"test Walking Ones pattern",
3
},
{test_walkbit1, "WalkingZeroes", "[size] [loop] [addr]",
"test Walking Zeroes pattern",
3
},
/* need to the the 2 last one (infinite) : skipped for test all */
{test_read, "infinite read", "[addr]",
"basic test : infinite read access", 1},
{test_write, "infinite write", "[addr]",
"basic test : infinite write access", 1},
};
const int test_nb = ARRAY_SIZE(test);