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-rw-r--r--cmd/ti/ddr3.c248
1 files changed, 248 insertions, 0 deletions
diff --git a/cmd/ti/ddr3.c b/cmd/ti/ddr3.c
new file mode 100644
index 0000000000..b6435a43f4
--- /dev/null
+++ b/cmd/ti/ddr3.c
@@ -0,0 +1,248 @@
+/*
+ * EMIF: DDR3 test commands
+ *
+ * Copyright (C) 2012-2017 Texas Instruments Incorporated, <www.ti.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <asm/arch/hardware.h>
+#include <asm/arch/ddr3.h>
+#include <common.h>
+#include <command.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define DDR_MIN_ADDR CONFIG_SYS_SDRAM_BASE
+#define STACKSIZE (512 << 10) /* 512 KiB */
+
+#define DDR_REMAP_ADDR 0x80000000
+#define ECC_START_ADDR1 ((DDR_MIN_ADDR - DDR_REMAP_ADDR) >> 17)
+
+#define ECC_END_ADDR1 (((gd->start_addr_sp - DDR_REMAP_ADDR - \
+ STACKSIZE) >> 17) - 2)
+
+#define DDR_TEST_BURST_SIZE 1024
+
+static int ddr_memory_test(u32 start_address, u32 end_address, int quick)
+{
+ u32 index_start, value, index;
+
+ index_start = start_address;
+
+ while (1) {
+ /* Write a pattern */
+ for (index = index_start;
+ index < index_start + DDR_TEST_BURST_SIZE;
+ index += 4)
+ __raw_writel(index, index);
+
+ /* Read and check the pattern */
+ for (index = index_start;
+ index < index_start + DDR_TEST_BURST_SIZE;
+ index += 4) {
+ value = __raw_readl(index);
+ if (value != index) {
+ printf("ddr_memory_test: Failed at address index = 0x%x value = 0x%x *(index) = 0x%x\n",
+ index, value, __raw_readl(index));
+
+ return -1;
+ }
+ }
+
+ index_start += DDR_TEST_BURST_SIZE;
+ if (index_start >= end_address)
+ break;
+
+ if (quick)
+ continue;
+
+ /* Write a pattern for complementary values */
+ for (index = index_start;
+ index < index_start + DDR_TEST_BURST_SIZE;
+ index += 4)
+ __raw_writel((u32)~index, index);
+
+ /* Read and check the pattern */
+ for (index = index_start;
+ index < index_start + DDR_TEST_BURST_SIZE;
+ index += 4) {
+ value = __raw_readl(index);
+ if (value != ~index) {
+ printf("ddr_memory_test: Failed at address index = 0x%x value = 0x%x *(index) = 0x%x\n",
+ index, value, __raw_readl(index));
+
+ return -1;
+ }
+ }
+
+ index_start += DDR_TEST_BURST_SIZE;
+ if (index_start >= end_address)
+ break;
+
+ /* Write a pattern */
+ for (index = index_start;
+ index < index_start + DDR_TEST_BURST_SIZE;
+ index += 2)
+ __raw_writew((u16)index, index);
+
+ /* Read and check the pattern */
+ for (index = index_start;
+ index < index_start + DDR_TEST_BURST_SIZE;
+ index += 2) {
+ value = __raw_readw(index);
+ if (value != (u16)index) {
+ printf("ddr_memory_test: Failed at address index = 0x%x value = 0x%x *(index) = 0x%x\n",
+ index, value, __raw_readw(index));
+
+ return -1;
+ }
+ }
+
+ index_start += DDR_TEST_BURST_SIZE;
+ if (index_start >= end_address)
+ break;
+
+ /* Write a pattern */
+ for (index = index_start;
+ index < index_start + DDR_TEST_BURST_SIZE;
+ index += 1)
+ __raw_writeb((u8)index, index);
+
+ /* Read and check the pattern */
+ for (index = index_start;
+ index < index_start + DDR_TEST_BURST_SIZE;
+ index += 1) {
+ value = __raw_readb(index);
+ if (value != (u8)index) {
+ printf("ddr_memory_test: Failed at address index = 0x%x value = 0x%x *(index) = 0x%x\n",
+ index, value, __raw_readb(index));
+
+ return -1;
+ }
+ }
+
+ index_start += DDR_TEST_BURST_SIZE;
+ if (index_start >= end_address)
+ break;
+ }
+
+ puts("ddr memory test PASSED!\n");
+ return 0;
+}
+
+static int ddr_memory_compare(u32 address1, u32 address2, u32 size)
+{
+ u32 index, value, index2, value2;
+
+ for (index = address1, index2 = address2;
+ index < address1 + size;
+ index += 4, index2 += 4) {
+ value = __raw_readl(index);
+ value2 = __raw_readl(index2);
+
+ if (value != value2) {
+ printf("ddr_memory_test: Compare failed at address = 0x%x value = 0x%x, address2 = 0x%x value2 = 0x%x\n",
+ index, value, index2, value2);
+
+ return -1;
+ }
+ }
+
+ puts("ddr memory compare PASSED!\n");
+ return 0;
+}
+
+static int ddr_memory_ecc_err(u32 base, u32 address, u32 ecc_err)
+{
+ u32 value1, value2, value3;
+
+ puts("Disabling DDR ECC ...\n");
+ ddr3_disable_ecc(base);
+
+ value1 = __raw_readl(address);
+ value2 = value1 ^ ecc_err;
+ __raw_writel(value2, address);
+
+ value3 = __raw_readl(address);
+ printf("ECC err test, addr 0x%x, read data 0x%x, wrote data 0x%x, err pattern: 0x%x, read after write data 0x%x\n",
+ address, value1, value2, ecc_err, value3);
+
+ __raw_writel(ECC_START_ADDR1 | (ECC_END_ADDR1 << 16),
+ base + KS2_DDR3_ECC_ADDR_RANGE1_OFFSET);
+
+ puts("Enabling DDR ECC ...\n");
+ ddr3_enable_ecc(base, 1);
+
+ value1 = __raw_readl(address);
+ printf("ECC err test, addr 0x%x, read data 0x%x\n", address, value1);
+
+ ddr3_check_ecc_int(base);
+ return 0;
+}
+
+static int do_ddr_test(cmd_tbl_t *cmdtp,
+ int flag, int argc, char * const argv[])
+{
+ u32 start_addr, end_addr, size, ecc_err;
+
+ if ((argc == 4) && (strncmp(argv[1], "ecc_err", 8) == 0)) {
+ if (!ddr3_ecc_support_rmw(KS2_DDR3A_EMIF_CTRL_BASE)) {
+ puts("ECC RMW isn't supported for this SOC\n");
+ return 1;
+ }
+
+ start_addr = simple_strtoul(argv[2], NULL, 16);
+ ecc_err = simple_strtoul(argv[3], NULL, 16);
+
+ if ((start_addr < CONFIG_SYS_SDRAM_BASE) ||
+ (start_addr > (CONFIG_SYS_SDRAM_BASE +
+ CONFIG_MAX_RAM_BANK_SIZE - 1))) {
+ puts("Invalid address!\n");
+ return cmd_usage(cmdtp);
+ }
+
+ ddr_memory_ecc_err(KS2_DDR3A_EMIF_CTRL_BASE,
+ start_addr, ecc_err);
+ return 0;
+ }
+
+ if (!(((argc == 4) && (strncmp(argv[1], "test", 5) == 0)) ||
+ ((argc == 5) && (strncmp(argv[1], "compare", 8) == 0))))
+ return cmd_usage(cmdtp);
+
+ start_addr = simple_strtoul(argv[2], NULL, 16);
+ end_addr = simple_strtoul(argv[3], NULL, 16);
+
+ if ((start_addr < CONFIG_SYS_SDRAM_BASE) ||
+ (start_addr > (CONFIG_SYS_SDRAM_BASE +
+ CONFIG_MAX_RAM_BANK_SIZE - 1)) ||
+ (end_addr < CONFIG_SYS_SDRAM_BASE) ||
+ (end_addr > (CONFIG_SYS_SDRAM_BASE +
+ CONFIG_MAX_RAM_BANK_SIZE - 1)) || (start_addr >= end_addr)) {
+ puts("Invalid start or end address!\n");
+ return cmd_usage(cmdtp);
+ }
+
+ puts("Please wait ...\n");
+ if (argc == 5) {
+ size = simple_strtoul(argv[4], NULL, 16);
+ ddr_memory_compare(start_addr, end_addr, size);
+ } else {
+ ddr_memory_test(start_addr, end_addr, 0);
+ }
+
+ return 0;
+}
+
+U_BOOT_CMD(ddr, 5, 1, do_ddr_test,
+ "DDR3 test",
+ "test <start_addr in hex> <end_addr in hex> - test DDR from start\n"
+ " address to end address\n"
+ "ddr compare <start_addr in hex> <end_addr in hex> <size in hex> -\n"
+ " compare DDR data of (size) bytes from start address to end\n"
+ " address\n"
+ "ddr ecc_err <addr in hex> <bit_err in hex> - generate bit errors\n"
+ " in DDR data at <addr>, the command will read a 32-bit data\n"
+ " from <addr>, and write (data ^ bit_err) back to <addr>\n"
+);
generated by cgit (git 2.34.1) at 2024-12-23 09:51:27 +0000