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-rw-r--r--board/bsh/imx6ulz_smm_m2/Kconfig21
-rw-r--r--board/bsh/imx6ulz_smm_m2/MAINTAINERS1
-rw-r--r--board/bsh/imx6ulz_smm_m2/Makefile4
-rw-r--r--board/bsh/imx6ulz_smm_m2/ddr3l_timing_128m.c1
-rw-r--r--board/bsh/imx6ulz_smm_m2/ddr3l_timing_128m_m2b.c152
-rw-r--r--board/bsh/imx6ulz_smm_m2/ddr3l_timing_256m.c1
-rw-r--r--board/bsh/imx6ulz_smm_m2/ddr3l_timing_256m_m2b.c137
-rw-r--r--board/bsh/imx6ulz_smm_m2/ddr3l_timing_512m.c1
-rw-r--r--board/bsh/imx6ulz_smm_m2/spl.c37
-rw-r--r--board/bsh/imx6ulz_smm_m2/spl_mtypes.h1
-rw-r--r--configs/imx6ulz_smm_m2b_defconfig78
11 files changed, 416 insertions, 18 deletions
diff --git a/board/bsh/imx6ulz_smm_m2/Kconfig b/board/bsh/imx6ulz_smm_m2/Kconfig
index e38df7ce5cb..20971aa4fe1 100644
--- a/board/bsh/imx6ulz_smm_m2/Kconfig
+++ b/board/bsh/imx6ulz_smm_m2/Kconfig
@@ -9,4 +9,25 @@ config SYS_VENDOR
config SYS_CONFIG_NAME
default "imx6ulz_smm_m2"
+choice
+ prompt "Memory Type (M2/M2B) board"
+ default BSH_M2_MEMORY
+ help
+ Memory type setup.
+ Please choose correct memory model here.
+
+config BSH_M2_MEMORY
+ bool "Enable for bsh m2 variant"
+ help
+ If this option is enabled, U-Boot will be configured to support
+ imx6ulz bsh m2 revision memories.
+
+config BSH_M2B_MEMORY
+ bool "Enable for bsh m2b variant"
+ help
+ If this option is enabled, U-Boot will be configured to support
+ imx6ulz bsh m2b revision memories.
+
+endchoice
+
endif
diff --git a/board/bsh/imx6ulz_smm_m2/MAINTAINERS b/board/bsh/imx6ulz_smm_m2/MAINTAINERS
index 77a033c6cbb..a75cddd72f8 100644
--- a/board/bsh/imx6ulz_smm_m2/MAINTAINERS
+++ b/board/bsh/imx6ulz_smm_m2/MAINTAINERS
@@ -4,3 +4,4 @@ S: Maintained
F: board/bsh/imx6ulz_smm_m2/
F: include/configs/imx6ulz_smm_m2.h
F: configs/imx6ulz_smm_m2_defconfig
+F: configs/imx6ulz_smm_m2b_defconfig
diff --git a/board/bsh/imx6ulz_smm_m2/Makefile b/board/bsh/imx6ulz_smm_m2/Makefile
index 4f4d67f659d..233bbff4c16 100644
--- a/board/bsh/imx6ulz_smm_m2/Makefile
+++ b/board/bsh/imx6ulz_smm_m2/Makefile
@@ -2,4 +2,6 @@
# (C) Copyright 2021 Amarula Solutions B.V.
obj-y := imx6ulz_smm_m2.o
-obj-$(CONFIG_XPL_BUILD) += spl.o ddr3l_timing_512m.o ddr3l_timing_256m.o ddr3l_timing_128m.o
+obj-$(CONFIG_XPL_BUILD) += spl.o
+obj-$(CONFIG_BSH_M2_MEMORY) += ddr3l_timing_512m.o ddr3l_timing_256m.o ddr3l_timing_128m.o
+obj-$(CONFIG_BSH_M2B_MEMORY) += ddr3l_timing_256m_m2b.o ddr3l_timing_128m_m2b.o
diff --git a/board/bsh/imx6ulz_smm_m2/ddr3l_timing_128m.c b/board/bsh/imx6ulz_smm_m2/ddr3l_timing_128m.c
index 66c3483adbf..f11654a8ceb 100644
--- a/board/bsh/imx6ulz_smm_m2/ddr3l_timing_128m.c
+++ b/board/bsh/imx6ulz_smm_m2/ddr3l_timing_128m.c
@@ -166,4 +166,5 @@ static const struct dram_cfg_param ddr_ddrc_cfg_128mb[] = {
struct dram_timing_info bsh_dram_timing_128mb = {
.ddrc_cfg = ddr_ddrc_cfg_128mb,
.ddrc_cfg_num = ARRAY_SIZE(ddr_ddrc_cfg_128mb),
+ .dram_size = SZ_128M,
};
diff --git a/board/bsh/imx6ulz_smm_m2/ddr3l_timing_128m_m2b.c b/board/bsh/imx6ulz_smm_m2/ddr3l_timing_128m_m2b.c
new file mode 100644
index 00000000000..f989e24f567
--- /dev/null
+++ b/board/bsh/imx6ulz_smm_m2/ddr3l_timing_128m_m2b.c
@@ -0,0 +1,152 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include "spl_mtypes.h"
+
+static const struct dram_cfg_param ddr_ddrc_cfg_128mb[] = {
+ /* IOMUX */
+
+ /* DDR IO Type: */
+ {0x020e04b4, 0x000C0000}, /* IOMUXC_SW_PAD_CTL_GRP_DDR_TYPE */
+ {0x020e04ac, 0x00000000}, /* IOMUXC_SW_PAD_CTL_GRP_DDRPKE */
+
+ /* Clock: */
+ {0x020e027c, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDCLK_0 */
+
+ /* Address: */
+ {0x020e0250, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_CAS */
+ {0x020e024c, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_RAS */
+ {0x020e0490, 0x00000028}, /* IOMUXC_SW_PAD_CTL_GRP_ADDDS */
+
+ /* Control: */
+ {0x020e0288, 0x000C0028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_RESET */
+ {0x020e0270, 0x00000000}, /*
+ * IOMUXC_SW_PAD_CTL_PAD_DRAM_SDBA2 - DSE can be configured
+ * using Group Control Register IOMUXC_SW_PAD_CTL_GRP_CTLDS
+ */
+
+ {0x020e0260, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDODT0 */
+ {0x020e0264, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDODT1 */
+ {0x020e04a0, 0x00000028}, /* IOMUXC_SW_PAD_CTL_GRP_CTLDS */
+
+ /* Data Strobes: */
+ {0x020e0494, 0x00020000}, /* IOMUXC_SW_PAD_CTL_GRP_DDRMODE_CTL */
+ {0x020e0280, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDQS0 */
+ {0x020e0284, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDQS1 */
+
+ /* Data: */
+ {0x020e04b0, 0x00020000}, /* IOMUXC_SW_PAD_CTL_GRP_DDRMODE */
+ {0x020e0498, 0x00000028}, /* IOMUXC_SW_PAD_CTL_GRP_B0DS */
+ {0x020e04a4, 0x00000028}, /* IOMUXC_SW_PAD_CTL_GRP_B1DS */
+
+ {0x020e0244, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_DQM0 */
+ {0x020e0248, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_DQM1 */
+
+ /*
+ * =============================================================================
+ * DDR Controller Registers
+ * =============================================================================
+ * Manufacturer:WINBOND
+ * Device Part Number:W631GU6RB-11
+ * Clock Freq.: 400MHz
+ * Density per CS in Gb: 1
+ * Chip Selects used:1
+ * Total DRAM density (Gb)1
+ * Number of Banks:8
+ * Row address: 13
+ * Column address: 10
+ * Data bus width16
+ * =============================================================================
+ */
+ {0x021b001c, 0x00008000}, /*
+ * MMDC0_MDSCR, set the Configuration request bit
+ * during MMDC set up
+ */
+
+ /*
+ * =============================================================================
+ * Calibration setup.
+ * =============================================================================
+ */
+ {0x021b0800, 0xA1390003}, /*
+ * DDR_PHY_P0_MPZQHWCTRL, enable both one-time & periodic
+ * HW ZQ calibration.
+ */
+
+ /*
+ * For target board, may need to run write leveling calibration to fine tune
+ * these settings.
+ */
+ {0x021b080c, 0x00060002},
+
+ /* Read DQS Gating calibration */
+ {0x021b083c, 0x414c0150}, /* MPDGCTRL0 PHY0 */
+
+ /* Read calibration */
+ {0x021b0848, 0x4040363e}, /* MPRDDLCTL PHY0 */
+
+ /* Write calibration */
+ {0x021b0850, 0x40402a28}, /* MPWRDLCTL PHY0 */
+
+ /*
+ * Read data bit delay: 3 is the recommended default value, although out of reset
+ * value is 0.
+ */
+ {0x021b081c, 0x33333333}, /* MMDC_MPRDDQBY0DL */
+ {0x021b0820, 0x33333333}, /* MMDC_MPRDDQBY1DL */
+
+ /* Write data bit delay: */
+ {0x021b082c, 0xf3333333}, /* MMDC_MPWRDQBY0DL */
+ {0x021b0830, 0xf3333333}, /* MMDC_MPWRDQBY1DL */
+
+ /* DQS&CLK Duty Cycle */
+ {0x021b08c0, 0x00944009}, /* [MMDC_MPDCCR] MMDC Duty Cycle Control Register */
+
+ /* Complete calibration by forced measurement: */
+ {0x021b08b8, 0x00000800}, /* DDR_PHY_P0_MPMUR0, frc_msr */
+
+ /* MMDC init: */
+ {0x021b0004, 0x0002002D}, /* MMDC0_MDPDC */
+ {0x021b0008, 0x1B333030}, /* MMDC0_MDOTC */
+ {0x021b000c, 0x2B2F52F3}, /* MMDC0_MDCFG0 */
+ {0x021b0010, 0xB66D0A63}, /* MMDC0_MDCFG1 */
+ {0x021b0014, 0x01FF00DB}, /* MMDC0_MDCFG2 */
+ {0x021b0018, 0x00201740}, /* MMDC0_MDMISC */
+ {0x021b002C, 0x000026D2}, /* MMDC0_MDRWD */
+ {0x021b0030, 0x002F1023}, /* MMDC0_MDOR */
+ {0x021b0040, 0x00000043}, /* CS0_END */
+ {0x021b0000, 0x82180000}, /* MMDC0_MDCTL */
+
+ /* Mode register writes for CS0 */
+ {0x021B001C, 0x02808032}, /* MMDC0_MDSCR, MR2 write, CS0 */
+ {0x021B001C, 0x00008033}, /* MMDC0_MDSCR, MR3 write, CS0 */
+ {0x021B001C, 0x00048031}, /* MMDC0_MDSCR, MR1 write, CS0 */
+ {0x021B001C, 0x15208030}, /* MMDC0_MDSCR, MR0 write, CS0 */
+ {0x021B001C, 0x04008040}, /*
+ * MMDC0_MDSCR, ZQ calibration
+ * command sent to device on CS0
+ */
+
+ /* final DDR setup, before operation start: */
+ {0x021b0020, 0x00000800}, /* MMDC0_MDREF */
+
+ {0x021b0818, 0x00000227}, /* DDR_PHY_P0_MPODTCTRL */
+
+ {0x021b0004, 0x0002556D}, /* MMDC0_MDPDC now SDCTL power down enabled */
+
+ {0x021b0404, 0x00011006}, /*
+ * MMDC0_MAPSR ADOPT power down enabled,
+ * MMDC will enter automatically to self-refresh
+ * while the number of idle cycle reached.
+ */
+
+ {0x021b001c, 0x00000000}, /*
+ * MMDC0_MDSCR, clear this register (especially the
+ * configuration bit as initialization is complete)
+ */
+};
+
+struct dram_timing_info bsh_dram_timing_128mb = {
+ .ddrc_cfg = ddr_ddrc_cfg_128mb,
+ .ddrc_cfg_num = ARRAY_SIZE(ddr_ddrc_cfg_128mb),
+ .dram_size = SZ_128M,
+};
diff --git a/board/bsh/imx6ulz_smm_m2/ddr3l_timing_256m.c b/board/bsh/imx6ulz_smm_m2/ddr3l_timing_256m.c
index 0fe5b90a673..5dfc9f5c70d 100644
--- a/board/bsh/imx6ulz_smm_m2/ddr3l_timing_256m.c
+++ b/board/bsh/imx6ulz_smm_m2/ddr3l_timing_256m.c
@@ -165,4 +165,5 @@ static const struct dram_cfg_param ddr_ddrc_cfg_256mb[] = {
struct dram_timing_info bsh_dram_timing_256mb = {
.ddrc_cfg = ddr_ddrc_cfg_256mb,
.ddrc_cfg_num = ARRAY_SIZE(ddr_ddrc_cfg_256mb),
+ .dram_size = SZ_256M,
};
diff --git a/board/bsh/imx6ulz_smm_m2/ddr3l_timing_256m_m2b.c b/board/bsh/imx6ulz_smm_m2/ddr3l_timing_256m_m2b.c
new file mode 100644
index 00000000000..c44f632b928
--- /dev/null
+++ b/board/bsh/imx6ulz_smm_m2/ddr3l_timing_256m_m2b.c
@@ -0,0 +1,137 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include "spl_mtypes.h"
+
+static const struct dram_cfg_param ddr_ddrc_cfg_256mb[] = {
+ /* IOMUX */
+
+ /* DDR IO Type: */
+ {0x020e04b4, 0x000C0000}, /* IOMUXC_SW_PAD_CTL_GRP_DDR_TYPE */
+ {0x020e04ac, 0x00000000}, /* IOMUXC_SW_PAD_CTL_GRP_DDRPKE */
+
+ /* Clock: */
+ {0x020e027c, 0x00000030}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDCLK0_P */
+
+ /* Address: */
+ {0x020e0250, 0x00000030}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_CAS */
+ {0x020e024c, 0x00000030}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_RAS */
+ {0x020e0490, 0x00000030}, /* IOMUXC_SW_PAD_CTL_GRP_ADDDS */
+
+ /* Control: */
+ {0x020e0288, 0x000C0030}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_RESET */
+ {0x020e0270, 0x00000000}, /*
+ * IOMUXC_SW_PAD_CTL_PAD_DRAM_SDBA2 - DSE can be
+ * configured using Group Control Register:
+ * IOMUXC_SW_PAD_CTL_GRP_CTLDS
+ */
+
+ {0x020e0260, 0x00000030}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_ODT0 */
+ {0x020e0264, 0x00000030}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_ODT1 */
+ {0x020e04a0, 0x00000028}, /* IOMUXC_SW_PAD_CTL_GRP_CTLDS */
+
+ /* Data Strobes: */
+ {0x020e0494, 0x00020000}, /* IOMUXC_SW_PAD_CTL_GRP_DDRMODE_CTL */
+ {0x020e0280, 0x00000030}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDQS0_P */
+ {0x020e0284, 0x00000030}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDQS1_P */
+
+ /* Data: */
+ {0x020e04b0, 0x00020000}, /* IOMUXC_SW_PAD_CTL_GRP_DDRMODE */
+ {0x020e0498, 0x00000030}, /* IOMUXC_SW_PAD_CTL_GRP_B0DS */
+ {0x020e04a4, 0x00000030}, /* IOMUXC_SW_PAD_CTL_GRP_B1DS */
+
+ {0x020e0244, 0x00000030}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_DQM0 */
+ {0x020e0248, 0x00000030}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_DQM1 */
+
+ /*
+ * =============================================================================
+ * DDR Controller Registers
+ * =============================================================================
+ * Manufacturer:WINBOND
+ * Device Part Number:W632GU6RB-11
+ * Clock Freq.: 400MHz
+ * Density per CS in Gb: 2
+ * Chip Selects used:1
+ * Total DRAM density (Gb)2
+ * Number of Banks:8
+ * Row address: 14
+ * Column address: 10
+ * Data bus width16
+ * =============================================================================
+ */
+ {0x021b001c, 0x00008000}, /*
+ * MMDC0_MDSCR, set the Configuration request bit
+ * during MMDC set up
+ */
+
+ /*
+ * =============================================================================
+ * Calibration setup.
+ * =============================================================================
+ */
+ {0x021b0800, 0xA1390003}, /*
+ * DDR_PHY_P0_MPZQHWCTRL, enable both one-time & periodic
+ * HW ZQ calibration.
+ */
+
+ /*
+ * For target board, may need to run write leveling calibration to fine tune
+ * these settings.
+ */
+ {0x021b080c, 0x00070005},
+
+ /* Read DQS Gating calibration */
+ {0x021b083c, 0x414c0150}, /* MPDGCTRL0 PHY0 */
+
+ /* Read calibration */
+ {0x021b0848, 0x4040383e}, /* MMDC_MPRDDLCTL */
+
+ /* Write calibration */
+ {0x021b0850, 0x40402e2a}, /* MMDC_MPWRDLCTL */
+
+ {0x021B081C, 0x33333333}, /* MMDC_MPRDDQBY0DL */
+ {0x021B0820, 0x33333333}, /* MMDC_MPRDDQBY1DL */
+
+ {0x021B082C, 0xf3333333}, /* MMDC_MPWRDQBY0DL */
+ {0x021B0830, 0xf3333333}, /* MMDC_MPWRDQBY1DL */
+
+ {0x021B08C0, 0x00944009}, /* MMDC_MPDCCR */
+
+ /* Complete calibration by forced measurement: */
+ {0x021B08B8, 0x00000800}, /* DDR_PHY_P0_MPMUR0, frc_msr */
+
+ /* MMDC init: */
+ {0x021b0004, 0x00020024}, /* MMDC0_MDPDC */
+ {0x021b0008, 0x1B333030}, /* MMDC0_MDOTC */
+ {0x021b000c, 0x3F4352D3}, /* MMDC0_MDCFG0 */
+ {0x021b0010, 0xB66D0A63}, /* MMDC0_MDCFG1 */
+ {0x021b0014, 0x01FF00DB}, /* MMDC0_MDCFG2 */
+ {0x021b0018, 0x00201740}, /* MMDC0_MDMISC */
+ {0x021b002C, 0x000026D2}, /* MMDC0_MDRWD */
+ {0x021b0030, 0x00431023}, /* MMDC0_MDOR */
+ {0x021b0040, 0x00000047}, /* CS0_END */
+ {0x021b0000, 0x83180000}, /* MMDC0_MDCTL */
+
+ /* Mode register writes for CS0 */
+ {0x021B001C, 0x02808032}, /* MMDC0_MDSCR, MR2 write, CS0 */
+ {0x021B001C, 0x00008033}, /* MMDC0_MDSCR, MR3 write, CS0 */
+ {0x021B001C, 0x00048031}, /* MMDC0_MDSCR, MR1 write, CS0 */
+ {0x021B001C, 0x15208030}, /* MMDC0_MDSCR, MR0 write, CS0 */
+ {0x021B001C, 0x04008040}, /* MMDC0_MDSCR, ZQ calibration */
+
+ /* final DDR setup, before operation start: */
+ {0x021b0020, 0x00000800}, /* MMDC0_MDREF */
+
+ {0x021b0818, 0x00000227}, /* DDR_PHY_P0_MPODTCTRL */
+ {0x021b0004, 0x00025564}, /* MMDC0_MDPDC now SDCTL power down enabled */
+ {0x021b0404, 0x00011006}, /* MMDC0_MAPSR ADOPT power down enabled */
+ {0x021b001c, 0x00000000}, /*
+ * MMDC0_MDSCR, clear this register (especially
+ * the configuration bit as initialization is complete)
+ */
+};
+
+struct dram_timing_info bsh_dram_timing_256mb = {
+ .ddrc_cfg = ddr_ddrc_cfg_256mb,
+ .ddrc_cfg_num = ARRAY_SIZE(ddr_ddrc_cfg_256mb),
+ .dram_size = SZ_256M,
+};
diff --git a/board/bsh/imx6ulz_smm_m2/ddr3l_timing_512m.c b/board/bsh/imx6ulz_smm_m2/ddr3l_timing_512m.c
index f5989382f5a..4c2ffcd429d 100644
--- a/board/bsh/imx6ulz_smm_m2/ddr3l_timing_512m.c
+++ b/board/bsh/imx6ulz_smm_m2/ddr3l_timing_512m.c
@@ -165,4 +165,5 @@ static const struct dram_cfg_param ddr_ddrc_cfg_512mb[] = {
struct dram_timing_info bsh_dram_timing_512mb = {
.ddrc_cfg = ddr_ddrc_cfg_512mb,
.ddrc_cfg_num = ARRAY_SIZE(ddr_ddrc_cfg_512mb),
+ .dram_size = SZ_512M,
};
diff --git a/board/bsh/imx6ulz_smm_m2/spl.c b/board/bsh/imx6ulz_smm_m2/spl.c
index c330e4d6d39..7aea73f0f5d 100644
--- a/board/bsh/imx6ulz_smm_m2/spl.c
+++ b/board/bsh/imx6ulz_smm_m2/spl.c
@@ -52,28 +52,31 @@ static void ddr_cfg_write(const struct dram_timing_info *dram_timing_info)
}
}
+static const struct dram_timing_info *board_dram_timing[] = {
+#if defined(CONFIG_M2_MEMORY)
+ &bsh_dram_timing_512mb,
+#endif
+ &bsh_dram_timing_256mb,
+ &bsh_dram_timing_128mb,
+};
+
static void spl_dram_init(void)
{
/* Configure memory to maximum supported size for detection */
- ddr_cfg_write(&bsh_dram_timing_512mb);
+ ddr_cfg_write(board_dram_timing[0]);
/* Detect memory physically present */
- gd->ram_size = get_ram_size((void *)CFG_SYS_SDRAM_BASE, SZ_512M);
-
- /* Reconfigure memory for actual detected size */
- switch (gd->ram_size) {
- case SZ_512M:
- /* Already configured, nothing to do */
- break;
- case SZ_256M:
- udelay(1);
- ddr_cfg_write(&bsh_dram_timing_256mb);
- break;
- case SZ_128M:
- default:
- udelay(1);
- ddr_cfg_write(&bsh_dram_timing_128mb);
- break;
+ gd->ram_size = get_ram_size((void *)CFG_SYS_SDRAM_BASE, board_dram_timing[0]->dram_size);
+
+ if (board_dram_timing[0]->dram_size == gd->ram_size)
+ return;
+
+ for (size_t index = 1; index < ARRAY_SIZE(board_dram_timing); index++) {
+ if (board_dram_timing[index]->dram_size == gd->ram_size) {
+ udelay(1);
+ ddr_cfg_write(board_dram_timing[index]);
+ break;
+ }
}
}
diff --git a/board/bsh/imx6ulz_smm_m2/spl_mtypes.h b/board/bsh/imx6ulz_smm_m2/spl_mtypes.h
index 8da59881c83..06d6f2d76d8 100644
--- a/board/bsh/imx6ulz_smm_m2/spl_mtypes.h
+++ b/board/bsh/imx6ulz_smm_m2/spl_mtypes.h
@@ -18,6 +18,7 @@ struct dram_cfg_param {
struct dram_timing_info {
const struct dram_cfg_param *ddrc_cfg;
unsigned int ddrc_cfg_num;
+ size_t dram_size;
};
extern struct dram_timing_info bsh_dram_timing_128mb;
diff --git a/configs/imx6ulz_smm_m2b_defconfig b/configs/imx6ulz_smm_m2b_defconfig
new file mode 100644
index 00000000000..c9e66adde98
--- /dev/null
+++ b/configs/imx6ulz_smm_m2b_defconfig
@@ -0,0 +1,78 @@
+CONFIG_ARM=y
+CONFIG_ARCH_MX6=y
+CONFIG_TEXT_BASE=0x87800000
+CONFIG_SYS_MALLOC_LEN=0x1000000
+CONFIG_SYS_MALLOC_F_LEN=0x18000
+CONFIG_SPL_GPIO=y
+CONFIG_SPL_LIBCOMMON_SUPPORT=y
+CONFIG_SPL_LIBGENERIC_SUPPORT=y
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_ENV_SIZE=0x20000
+CONFIG_ENV_OFFSET=0x400000
+CONFIG_MX6ULL=y
+CONFIG_TARGET_MX6ULZ_SMM_M2=y
+CONFIG_BSH_M2B_MEMORY=y
+CONFIG_DEFAULT_DEVICE_TREE="nxp/imx/imx6ulz-bsh-smm-m2"
+CONFIG_SPL_SERIAL=y
+CONFIG_SPL_BSS_START_ADDR=0x84100000
+CONFIG_SPL=y
+CONFIG_FIT=y
+CONFIG_FIT_SIGNATURE=y
+CONFIG_FIT_VERBOSE=y
+CONFIG_LEGACY_IMAGE_FORMAT=y
+CONFIG_DISTRO_DEFAULTS=y
+CONFIG_BOOTDELAY=3
+CONFIG_BOARD_LATE_INIT=y
+CONFIG_SPL_SYS_MALLOC=y
+CONFIG_SPL_DMA=y
+CONFIG_SPL_MTD=y
+CONFIG_SPL_NAND_SUPPORT=y
+CONFIG_SPL_WATCHDOG=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_I2C=y
+CONFIG_CMD_USB=y
+CONFIG_CMD_USB_SDP=y
+CONFIG_CMD_CACHE=y
+CONFIG_CMD_MTDPARTS=y
+CONFIG_MTDIDS_DEFAULT="nand0=gpmi-nand"
+CONFIG_MTDPARTS_DEFAULT="mtdparts=gpmi-nand:4m(nandboot),1m(env),8m(kernel),1m(nanddtb),-(rootfs)"
+CONFIG_CMD_UBI=y
+# CONFIG_ISO_PARTITION is not set
+CONFIG_OF_CONTROL=y
+CONFIG_ENV_OVERWRITE=y
+CONFIG_ENV_IS_IN_NAND=y
+CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+CONFIG_NO_NET=y
+CONFIG_BOUNCE_BUFFER=y
+CONFIG_USB_FUNCTION_FASTBOOT=y
+CONFIG_FASTBOOT_BUF_ADDR=0x82000000
+CONFIG_FASTBOOT_FLASH=y
+CONFIG_FASTBOOT_UUU_SUPPORT=y
+CONFIG_SYS_I2C_MXC=y
+# CONFIG_MMC is not set
+CONFIG_MTD=y
+CONFIG_MTD_RAW_NAND=y
+CONFIG_SYS_NAND_USE_FLASH_BBT=y
+CONFIG_NAND_MXS=y
+CONFIG_NAND_MXS_DT=y
+CONFIG_SYS_NAND_ONFI_DETECTION=y
+CONFIG_SYS_NAND_U_BOOT_LOCATIONS=y
+CONFIG_SYS_NAND_U_BOOT_OFFS=0x111400
+CONFIG_SYS_NAND_U_BOOT_OFFS_REDUND=0x291400
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_IMX6=y
+CONFIG_DM_PMIC=y
+CONFIG_DM_REGULATOR=y
+CONFIG_DM_REGULATOR_FIXED=y
+CONFIG_MXC_UART=y
+CONFIG_IMX_THERMAL=y
+CONFIG_USB=y
+CONFIG_SPL_USB_HOST=y
+CONFIG_USB_GADGET=y
+CONFIG_SPL_USB_GADGET=y
+CONFIG_USB_GADGET_MANUFACTURER="BSH"
+CONFIG_USB_GADGET_VENDOR_NUM=0x0525
+CONFIG_USB_GADGET_PRODUCT_NUM=0xa4a5
+CONFIG_CI_UDC=y
+CONFIG_SDP_LOADADDR=0x877fffc0
+CONFIG_SPL_USB_SDP_SUPPORT=y
generated by cgit v1.2.3 (git 2.0.4) at 2025-08-04 12:55:37 +0000