[U-Boot] [PATCH 8/9] stm32mp1: ram: add tests in DDR interactive mode
Patrick Delaunay
patrick.delaunay at st.com
Wed Apr 10 12:09:28 UTC 2019
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 at st.com>
---
drivers/ram/stm32mp1/Kconfig | 8 +
drivers/ram/stm32mp1/Makefile | 1 +
drivers/ram/stm32mp1/stm32mp1_interactive.c | 75 ++
drivers/ram/stm32mp1/stm32mp1_tests.c | 1426 +++++++++++++++++++++++++++
drivers/ram/stm32mp1/stm32mp1_tests.h | 31 +
5 files changed, 1541 insertions(+)
create mode 100644 drivers/ram/stm32mp1/stm32mp1_tests.c
create mode 100644 drivers/ram/stm32mp1/stm32mp1_tests.h
diff --git a/drivers/ram/stm32mp1/Kconfig b/drivers/ram/stm32mp1/Kconfig
index 511eaf2..4e682b4 100644
--- a/drivers/ram/stm32mp1/Kconfig
+++ b/drivers/ram/stm32mp1/Kconfig
@@ -29,3 +29,11 @@ config STM32MP1_DDR_INTERACTIVE_FORCE
skip the polling of character 'd' in console
useful when SPL is loaded in sysram
directly by programmer
+
+config STM32MP1_DDR_TESTS
+ bool "STM32MP1 DDR driver : tests support"
+ depends on STM32MP1_DDR_INTERACTIVE
+ default y
+ help
+ activate test support for interactive support in
+ STM32MP1 DDR controller driver: command test
diff --git a/drivers/ram/stm32mp1/Makefile b/drivers/ram/stm32mp1/Makefile
index 7b1f095..71ded6b 100644
--- a/drivers/ram/stm32mp1/Makefile
+++ b/drivers/ram/stm32mp1/Makefile
@@ -7,6 +7,7 @@ obj-y += stm32mp1_ram.o
obj-y += stm32mp1_ddr.o
obj-$(CONFIG_STM32MP1_DDR_INTERACTIVE) += stm32mp1_interactive.o
+obj-$(CONFIG_STM32MP1_DDR_TESTS) += stm32mp1_tests.o
ifneq ($(DDR_INTERACTIVE),)
CFLAGS_stm32mp1_interactive.o += -DCONFIG_STM32MP1_DDR_INTERACTIVE_FORCE=y
diff --git a/drivers/ram/stm32mp1/stm32mp1_interactive.c b/drivers/ram/stm32mp1/stm32mp1_interactive.c
index 1a31948..62d61ac 100644
--- a/drivers/ram/stm32mp1/stm32mp1_interactive.c
+++ b/drivers/ram/stm32mp1/stm32mp1_interactive.c
@@ -11,6 +11,7 @@
#include <ram.h>
#include <reset.h>
#include "stm32mp1_ddr.h"
+#include "stm32mp1_tests.h"
DECLARE_GLOBAL_DATA_PTR;
@@ -51,6 +52,9 @@ enum ddr_command stm32mp1_get_command(char *cmd, int argc)
[DDR_CMD_STEP] = "step",
[DDR_CMD_NEXT] = "next",
[DDR_CMD_GO] = "go",
+#ifdef CONFIG_STM32MP1_DDR_TESTS
+ [DDR_CMD_TEST] = "test",
+#endif
};
/* min and max number of argument */
const char cmd_arg[DDR_CMD_UNKNOWN][2] = {
@@ -64,6 +68,9 @@ enum ddr_command stm32mp1_get_command(char *cmd, int argc)
[DDR_CMD_STEP] = { 0, 1 },
[DDR_CMD_NEXT] = { 0, 0 },
[DDR_CMD_GO] = { 0, 0 },
+#ifdef CONFIG_STM32MP1_DDR_TESTS
+ [DDR_CMD_TEST] = { 0, 255 },
+#endif
};
int i;
@@ -105,6 +112,9 @@ static void stm32mp1_do_usage(void)
"next goes to the next step\n"
"go continues the U-Boot SPL execution\n"
"reset reboots machine\n"
+#ifdef CONFIG_STM32MP1_DDR_TESTS
+ "test [help] | <n> [...] lists (with help) or executes test <n>\n"
+#endif
"\nwith for [type|reg]:\n"
" all registers if absent\n"
" <type> = ctl, phy\n"
@@ -287,6 +297,63 @@ end:
return step;
}
+#if defined(CONFIG_STM32MP1_DDR_TESTS)
+static const char * const s_result[] = {
+ [TEST_PASSED] = "Pass",
+ [TEST_FAILED] = "Failed",
+ [TEST_ERROR] = "Error"
+};
+
+static void stm32mp1_ddr_subcmd(struct ddr_info *priv,
+ int argc, char *argv[],
+ const struct test_desc array[],
+ const int array_nb)
+{
+ int i;
+ unsigned long value;
+ int result;
+ char string[50] = "";
+
+ if (argc == 1) {
+ printf("%s:%d\n", argv[0], array_nb);
+ for (i = 0; i < array_nb; i++)
+ printf("%d:%s:%s\n",
+ i, array[i].name, array[i].usage);
+ return;
+ }
+ if (argc > 1 && !strcmp(argv[1], "help")) {
+ printf("%s:%d\n", argv[0], array_nb);
+ for (i = 0; i < array_nb; i++)
+ printf("%d:%s:%s:%s\n", i,
+ array[i].name, array[i].usage, array[i].help);
+ return;
+ }
+
+ if ((strict_strtoul(argv[1], 0, &value) < 0) ||
+ value >= array_nb) {
+ sprintf(string, "invalid argument %s",
+ argv[1]);
+ result = TEST_FAILED;
+ goto end;
+ }
+
+ if (argc > (array[value].max_args + 2)) {
+ sprintf(string, "invalid nb of args %d, max %d",
+ argc - 2, array[value].max_args);
+ result = TEST_FAILED;
+ goto end;
+ }
+
+ printf("execute %d:%s\n", (int)value, array[value].name);
+ clear_ctrlc();
+ result = array[value].fct(priv->ctl, priv->phy,
+ string, argc - 2, &argv[2]);
+
+end:
+ printf("Result: %s [%s]\n", s_result[result], string);
+}
+#endif
+
bool stm32mp1_ddr_interactive(void *priv,
enum stm32mp1_ddr_interact_step step,
const struct stm32mp1_ddr_config *config)
@@ -382,6 +449,14 @@ bool stm32mp1_ddr_interactive(void *priv,
next_step = stm32mp1_do_step(step, argc, argv);
break;
+#ifdef CONFIG_STM32MP1_DDR_TESTS
+ case DDR_CMD_TEST:
+ if (!stm32mp1_check_step(step, STEP_DDR_READY))
+ continue;
+ stm32mp1_ddr_subcmd(priv, argc, argv, test, test_nb);
+ break;
+#endif
+
default:
break;
}
diff --git a/drivers/ram/stm32mp1/stm32mp1_tests.c b/drivers/ram/stm32mp1/stm32mp1_tests.c
new file mode 100644
index 0000000..b6fb2a9
--- /dev/null
+++ b/drivers/ram/stm32mp1/stm32mp1_tests.c
@@ -0,0 +1,1426 @@
+// 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);
diff --git a/drivers/ram/stm32mp1/stm32mp1_tests.h b/drivers/ram/stm32mp1/stm32mp1_tests.h
new file mode 100644
index 0000000..8436780
--- /dev/null
+++ b/drivers/ram/stm32mp1/stm32mp1_tests.h
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause */
+/*
+ * Copyright (C) 2019, STMicroelectronics - All Rights Reserved
+ */
+
+#ifndef _RAM_STM32MP1_TESTS_H_
+#define _RAM_STM32MP1_TESTS_H_
+
+#include "stm32mp1_ddr_regs.h"
+
+enum test_result {
+ TEST_PASSED,
+ TEST_FAILED,
+ TEST_ERROR
+};
+
+struct test_desc {
+ enum test_result (*fct)(struct stm32mp1_ddrctl *ctl,
+ struct stm32mp1_ddrphy *phy,
+ char *string,
+ int argc, char *argv[]);
+ const char *name;
+ const char *usage;
+ const char *help;
+ u8 max_args;
+};
+
+extern const struct test_desc test[];
+extern const int test_nb;
+
+#endif
--
2.7.4
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