[PATCH v7 1/2] board: kontron: add sl28 support
Michael Walle
michael at walle.cc
Mon Sep 7 23:07:58 CEST 2020
Add basic support for the Kontron SMARC-sAL28 board. This includes just
the bare minimum to be able to bring up the board and boot linux.
For now, the Single and Dual PHY variant is supported. Other variants
will fall back to the basic variant.
In particular, there is no watchdog support for now. This means that you
have to disable the default watchdog, otherwise you'll end up in the
recovery bootloader. See the board README for details.
Signed-off-by: Michael Walle <michael at walle.cc>
---
arch/arm/Kconfig | 11 +
arch/arm/dts/Makefile | 3 +
.../dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi | 135 +++++++++++++
.../fsl-ls1028a-kontron-sl28-var3-u-boot.dtsi | 2 +
.../arm/dts/fsl-ls1028a-kontron-sl28-var3.dts | 15 ++
.../fsl-ls1028a-kontron-sl28-var4-u-boot.dtsi | 2 +
.../arm/dts/fsl-ls1028a-kontron-sl28-var4.dts | 48 +++++
arch/arm/dts/fsl-ls1028a-kontron-sl28.dts | 189 ++++++++++++++++++
board/kontron/sl28/Kconfig | 18 ++
board/kontron/sl28/MAINTAINERS | 7 +
board/kontron/sl28/Makefile | 8 +
board/kontron/sl28/common.c | 10 +
board/kontron/sl28/ddr.c | 98 +++++++++
board/kontron/sl28/sl28.c | 68 +++++++
board/kontron/sl28/spl.c | 32 +++
configs/kontron_sl28_defconfig | 107 ++++++++++
doc/board/index.rst | 1 +
doc/board/kontron/index.rst | 9 +
doc/board/kontron/sl28.rst | 160 +++++++++++++++
include/configs/kontron_sl28.h | 108 ++++++++++
20 files changed, 1031 insertions(+)
create mode 100644 arch/arm/dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi
create mode 100644 arch/arm/dts/fsl-ls1028a-kontron-sl28-var3-u-boot.dtsi
create mode 100644 arch/arm/dts/fsl-ls1028a-kontron-sl28-var3.dts
create mode 100644 arch/arm/dts/fsl-ls1028a-kontron-sl28-var4-u-boot.dtsi
create mode 100644 arch/arm/dts/fsl-ls1028a-kontron-sl28-var4.dts
create mode 100644 arch/arm/dts/fsl-ls1028a-kontron-sl28.dts
create mode 100644 board/kontron/sl28/Kconfig
create mode 100644 board/kontron/sl28/MAINTAINERS
create mode 100644 board/kontron/sl28/Makefile
create mode 100644 board/kontron/sl28/common.c
create mode 100644 board/kontron/sl28/ddr.c
create mode 100644 board/kontron/sl28/sl28.c
create mode 100644 board/kontron/sl28/spl.c
create mode 100644 configs/kontron_sl28_defconfig
create mode 100644 doc/board/kontron/index.rst
create mode 100644 doc/board/kontron/sl28.rst
create mode 100644 include/configs/kontron_sl28.h
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 80702c23d3..f57d48800d 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1615,6 +1615,16 @@ config TARGET_LS1046AFRWY
development platform that supports the QorIQ LS1046A
Layerscape Architecture processor.
+config TARGET_SL28
+ bool "Support sl28"
+ select ARCH_LS1028A
+ select ARM64
+ select ARMV8_MULTIENTRY
+ select SUPPORT_SPL
+ select BINMAN
+ help
+ Support for Kontron SMARC-sAL28 board.
+
config TARGET_COLIBRI_PXA270
bool "Support colibri_pxa270"
select CPU_PXA
@@ -1986,6 +1996,7 @@ source "board/hisilicon/hikey/Kconfig"
source "board/hisilicon/hikey960/Kconfig"
source "board/hisilicon/poplar/Kconfig"
source "board/isee/igep003x/Kconfig"
+source "board/kontron/sl28/Kconfig"
source "board/myir/mys_6ulx/Kconfig"
source "board/spear/spear300/Kconfig"
source "board/spear/spear310/Kconfig"
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index f8f529435b..b45eb6a772 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -422,6 +422,9 @@ dtb-$(CONFIG_FSL_LSCH2) += fsl-ls1043a-qds-duart.dtb \
fsl-ls1012a-2g5rdb.dtb \
fsl-ls1012a-frdm.dtb \
fsl-ls1012a-frwy.dtb
+dtb-$(CONFIG_TARGET_SL28) += fsl-ls1028a-kontron-sl28.dtb \
+ fsl-ls1028a-kontron-sl28-var3.dtb \
+ fsl-ls1028a-kontron-sl28-var4.dtb \
dtb-$(CONFIG_TARGET_DRAGONBOARD410C) += dragonboard410c.dtb
dtb-$(CONFIG_TARGET_DRAGONBOARD820C) += dragonboard820c.dtb
diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi b/arch/arm/dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi
new file mode 100644
index 0000000000..2375549c6e
--- /dev/null
+++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi
@@ -0,0 +1,135 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <config.h>
+
+/ {
+ aliases {
+ mmc0 = &esdhc0;
+ mmc1 = &esdhc1;
+ i2c0 = &i2c0;
+ i2c1 = &i2c3;
+ i2c2 = &i2c4;
+ rtc0 = &rtc;
+ ethernet0 = &enetc0;
+ ethernet1 = &enetc1;
+ ethernet2 = &enetc2;
+ ethernet3 = &enetc6;
+ };
+
+ binman {
+ filename = "u-boot.rom";
+ pad-byte = <0xff>;
+
+ u-boot-spl {
+ };
+
+ fit {
+ offset = <CONFIG_SPL_PAD_TO>;
+ description = "FIT image with multiple configurations";
+
+ images {
+ uboot {
+ description = "U-Boot";
+ type = "firmware";
+ os = "u-boot";
+ arch = "arm";
+ compression = "none";
+ load = <CONFIG_SYS_TEXT_BASE>;
+
+ u-boot-nodtb {
+ };
+ };
+
+ fdt-1 {
+ description = "fsl-ls1028a-kontron-sl28";
+ type = "flat_dt";
+ arch = "arm";
+ compression = "none";
+
+ blob {
+ filename = "arch/arm/dts/fsl-ls1028a-kontron-sl28.dtb";
+ };
+ };
+
+ fdt-2 {
+ description = "fsl-ls1028a-kontron-sl28-var3";
+ type = "flat_dt";
+ arch = "arm";
+ compression = "none";
+
+ blob {
+ filename = "arch/arm/dts/fsl-ls1028a-kontron-sl28-var3.dtb";
+ };
+ };
+
+ fdt-3 {
+ description = "fsl-ls1028a-kontron-sl28-var4";
+ type = "flat_dt";
+ arch = "arm";
+ compression = "none";
+
+ blob {
+ filename = "arch/arm/dts/fsl-ls1028a-kontron-sl28-var4.dtb";
+ };
+ };
+ };
+
+ configurations {
+ default = "conf-1";
+
+ conf-1 {
+ description = "fsl-ls1028a-kontron-sl28";
+ firmware = "uboot";
+ loadables = "uboot";
+ fdt = "fdt-1";
+ };
+
+ conf-2 {
+ description = "fsl-ls1028a-kontron-sl28-var3";
+ firmware = "uboot";
+ loadables = "uboot";
+ fdt = "fdt-2";
+ };
+
+ conf-3 {
+ description = "fsl-ls1028a-kontron-sl28-var4";
+ firmware = "uboot";
+ loadables = "uboot";
+ fdt = "fdt-3";
+ };
+ };
+ };
+ };
+};
+
+&i2c0 {
+ rtc: rtc at 32 {
+ };
+};
+
+&fspi {
+ u-boot,dm-pre-reloc;
+ flash at 0 {
+ u-boot,dm-pre-reloc;
+ };
+};
+
+&dspi2 {
+ u-boot,dm-pre-reloc;
+};
+
+&esdhc0 {
+ u-boot,dm-pre-reloc;
+};
+
+&esdhc1 {
+ u-boot,dm-pre-reloc;
+};
+
+&serial0 {
+ u-boot,dm-pre-reloc;
+};
+
+&sysclk {
+ u-boot,dm-pre-reloc;
+};
diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28-var3-u-boot.dtsi b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var3-u-boot.dtsi
new file mode 100644
index 0000000000..79b771e074
--- /dev/null
+++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var3-u-boot.dtsi
@@ -0,0 +1,2 @@
+// SPDX-License-Identifier: GPL-2.0+
+#include "fsl-ls1028a-kontron-sl28-u-boot.dtsi"
diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28-var3.dts b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var3.dts
new file mode 100644
index 0000000000..0c8b2af41a
--- /dev/null
+++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var3.dts
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Device Tree file for the Kontron SMARC-sAL28 board.
+ *
+ * Copyright (C) 2019 Michael Walle <michael at walle.cc>
+ *
+ */
+
+/dts-v1/;
+#include "fsl-ls1028a-kontron-sl28.dts"
+
+/ {
+ model = "Kontron SMARC-sAL28 (Single PHY)";
+ compatible = "kontron,sl28-var3", "kontron,sl28", "fsl,ls1028a";
+};
diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4-u-boot.dtsi b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4-u-boot.dtsi
new file mode 100644
index 0000000000..79b771e074
--- /dev/null
+++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4-u-boot.dtsi
@@ -0,0 +1,2 @@
+// SPDX-License-Identifier: GPL-2.0+
+#include "fsl-ls1028a-kontron-sl28-u-boot.dtsi"
diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4.dts b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4.dts
new file mode 100644
index 0000000000..33b16303ad
--- /dev/null
+++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4.dts
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Device Tree file for the Kontron SMARC-sAL28 board.
+ *
+ * This is for the network variant 4 which has two ethernet ports. It
+ * extends the base and provides one more port connected via RGMII.
+ *
+ * Copyright (C) 2019 Michael Walle <michael at walle.cc>
+ *
+ */
+
+/dts-v1/;
+#include "fsl-ls1028a-kontron-sl28.dts"
+#include <dt-bindings/net/qca-ar803x.h>
+
+/ {
+ model = "Kontron SMARC-sAL28 (Dual PHY)";
+ compatible = "kontron,sl28-var4", "kontron,sl28", "fsl,ls1028a";
+};
+
+&enetc1 {
+ phy-handle = <&phy1>;
+ phy-mode = "rgmii-id";
+ status = "okay";
+};
+
+&mdio0 {
+ phy1: ethernet-phy at 4 {
+ reg = <0x4>;
+ eee-broken-1000t;
+ eee-broken-100tx;
+
+ qca,clk-out-frequency = <125000000>;
+ qca,clk-out-strength = <AR803X_STRENGTH_FULL>;
+
+ vddio-supply = <&vddh>;
+
+ vddio: vddio-regulator {
+ regulator-name = "VDDIO";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ };
+
+ vddh: vddh-regulator {
+ regulator-name = "VDDH";
+ };
+ };
+};
diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28.dts b/arch/arm/dts/fsl-ls1028a-kontron-sl28.dts
new file mode 100644
index 0000000000..9561a58562
--- /dev/null
+++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28.dts
@@ -0,0 +1,189 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Device Tree file for the Kontron SMARC-sAL28 board.
+ *
+ * Copyright (C) 2019 Michael Walle <michael at walle.cc>
+ *
+ */
+
+/dts-v1/;
+#include "fsl-ls1028a.dtsi"
+
+/ {
+ model = "Kontron SMARC-sAL28";
+ compatible = "kontron,sl28", "fsl,ls1028a";
+
+ aliases {
+ serial0 = &serial0;
+ serial1 = &serial1;
+ serial2 = &lpuart1;
+ spi0 = &fspi;
+ spi1 = &dspi2;
+ };
+
+ chosen {
+ stdout-path = "serial0:115200n8";
+ };
+};
+
+&dspi2 {
+ status = "okay";
+};
+
+&enetc0 {
+ phy-handle = <&phy0>;
+ phy-mode = "sgmii";
+ status = "okay";
+};
+
+&enetc2 {
+ status = "disabled";
+};
+
+&enetc6 {
+ status = "disabled";
+};
+
+&esdhc0 {
+ sd-uhs-sdr104;
+ sd-uhs-sdr50;
+ sd-uhs-sdr25;
+ sd-uhs-sdr12;
+ status = "okay";
+};
+
+&esdhc1 {
+ mmc-hs200-1_8v;
+ mmc-hs400-1_8v;
+ bus-width = <8>;
+ status = "okay";
+};
+
+&fspi {
+ status = "okay";
+
+ flash at 0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "jedec,spi-nor";
+ m25p,fast-read;
+ spi-max-frequency = <133000000>;
+ reg = <0>;
+ /* The following setting enables 1-1-2 (CMD-ADDR-DATA) mode */
+ spi-rx-bus-width = <2>; /* 2 SPI Rx lines */
+ spi-tx-bus-width = <1>; /* 1 SPI Tx line */
+
+ partition at 0 {
+ reg = <0x000000 0x010000>;
+ label = "rcw";
+ read-only;
+ };
+
+ partition at 10000 {
+ reg = <0x010000 0x0f0000>;
+ label = "failsafe bootloader";
+ read-only;
+ };
+
+ partition at 100000 {
+ reg = <0x100000 0x040000>;
+ label = "failsafe DP firmware";
+ read-only;
+ };
+
+ partition at 140000 {
+ reg = <0x140000 0x0a0000>;
+ label = "failsafe trusted firmware";
+ read-only;
+ };
+
+ partition at 1e0000 {
+ reg = <0x1e0000 0x020000>;
+ label = "reserved";
+ read-only;
+ };
+
+ partition at 200000 {
+ reg = <0x200000 0x010000>;
+ label = "configuration store";
+ };
+
+ partition at 210000 {
+ reg = <0x210000 0x0f0000>;
+ label = "bootloader";
+ };
+
+ partition at 300000 {
+ reg = <0x300000 0x040000>;
+ label = "DP firmware";
+ };
+
+ partition at 340000 {
+ reg = <0x340000 0x0a0000>;
+ label = "trusted firmware";
+ };
+
+ partition at 3e0000 {
+ reg = <0x3e0000 0x020000>;
+ label = "bootloader environment";
+ };
+ };
+};
+
+&i2c0 {
+ status = "okay";
+
+ rtc at 32 {
+ compatible = "microcrystal,rv8803";
+ reg = <0x32>;
+ };
+
+ eeprom at 50 {
+ compatible = "atmel,24c32";
+ reg = <0x50>;
+ pagesize = <32>;
+ };
+};
+
+&i2c3 {
+ status = "okay";
+};
+
+&i2c4 {
+ status = "okay";
+
+ eeprom at 50 {
+ compatible = "atmel,24c32";
+ reg = <0x50>;
+ pagesize = <32>;
+ };
+};
+
+&lpuart1 {
+ status = "okay";
+};
+
+&mdio0 {
+ status = "okay";
+ phy0: ethernet-phy at 5 {
+ reg = <0x5>;
+ eee-broken-1000t;
+ eee-broken-100tx;
+ };
+};
+
+&serial0 {
+ status = "okay";
+};
+
+&serial1 {
+ status = "okay";
+};
+
+&usb1 {
+ status = "okay";
+};
+
+&usb2 {
+ status = "okay";
+};
diff --git a/board/kontron/sl28/Kconfig b/board/kontron/sl28/Kconfig
new file mode 100644
index 0000000000..cdec39be01
--- /dev/null
+++ b/board/kontron/sl28/Kconfig
@@ -0,0 +1,18 @@
+if TARGET_SL28
+
+config SYS_BOARD
+ default "sl28"
+
+config SYS_VENDOR
+ default "kontron"
+
+config SYS_SOC
+ default "fsl-layerscape"
+
+config SYS_CONFIG_NAME
+ default "kontron_sl28"
+
+config SYS_TEXT_BASE
+ default 0x96000000
+
+endif
diff --git a/board/kontron/sl28/MAINTAINERS b/board/kontron/sl28/MAINTAINERS
new file mode 100644
index 0000000000..a7b0fbbdd1
--- /dev/null
+++ b/board/kontron/sl28/MAINTAINERS
@@ -0,0 +1,7 @@
+Kontron SMARC-sAL28 board
+M: Michael Walle <michael at walle.cc>
+S: Maintained
+F: arch/arm/dts/fsl-ls1028a-kontron-sl28-*
+F: board/kontron/sl28/
+F: configs/kontron_sl28_defconfig
+F: include/configs/kontron_sl28.h
diff --git a/board/kontron/sl28/Makefile b/board/kontron/sl28/Makefile
new file mode 100644
index 0000000000..0f1866c874
--- /dev/null
+++ b/board/kontron/sl28/Makefile
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0+
+
+ifndef CONFIG_SPL_BUILD
+obj-y += sl28.o
+endif
+
+obj-y += common.o ddr.o
+obj-$(CONFIG_SPL_BUILD) += spl.o
diff --git a/board/kontron/sl28/common.c b/board/kontron/sl28/common.c
new file mode 100644
index 0000000000..14704f7051
--- /dev/null
+++ b/board/kontron/sl28/common.c
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <common.h>
+#include <asm/arch-fsl-layerscape/soc.h>
+
+int board_early_init_f(void)
+{
+ fsl_lsch3_early_init_f();
+ return 0;
+}
diff --git a/board/kontron/sl28/ddr.c b/board/kontron/sl28/ddr.c
new file mode 100644
index 0000000000..d111b6d4c3
--- /dev/null
+++ b/board/kontron/sl28/ddr.c
@@ -0,0 +1,98 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <common.h>
+#include <asm/io.h>
+#include <fsl_ddr_sdram.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define DCFG_GPPORCR1 0x20
+
+#define GPPORCR1_MEM_MASK (0x7 << 5)
+#define GPPORCR1_MEM_512MB_CS0 (0x0 << 5)
+#define GPPORCR1_MEM_1GB_CS0 (0x1 << 5)
+#define GPPORCR1_MEM_2GB_CS0 (0x2 << 5)
+#define GPPORCR1_MEM_4GB_CS0_1 (0x3 << 5)
+#define GPPORCR1_MEM_4GB_CS0_2 (0x4 << 5)
+#define GPPORCR1_MEM_8GB_CS0_1_2_3 (0x5 << 5)
+#define GPPORCR1_MEM_8GB_CS0_1 (0x6 << 5)
+
+static fsl_ddr_cfg_regs_t __maybe_unused ddr_cfg_regs = {
+ .cs[0].bnds = 0x0000007f,
+ .cs[0].config = 0x80044402,
+ .cs[1].bnds = 0x008000ff,
+ .cs[1].config = 0x80004402,
+
+ .timing_cfg_0 = 0x9011010c,
+ .timing_cfg_3 = 0x010c1000,
+ .timing_cfg_1 = 0xbcb48c66,
+ .timing_cfg_2 = 0x0fc0d118,
+ .ddr_sdram_cfg = 0xe70c000c,
+ .ddr_sdram_cfg_2 = 0x24401111,
+ .ddr_sdram_mode = 0x00441c70,
+ .ddr_sdram_mode_3 = 0x00001c70,
+ .ddr_sdram_mode_5 = 0x00001c70,
+ .ddr_sdram_mode_7 = 0x00001c70,
+ .ddr_sdram_mode_2 = 0x00180000,
+ .ddr_sdram_mode_4 = 0x00180000,
+ .ddr_sdram_mode_6 = 0x00180000,
+ .ddr_sdram_mode_8 = 0x00180000,
+
+ .ddr_sdram_interval = 0x0c30030c,
+ .ddr_data_init = 0xdeadbeef,
+
+ .ddr_sdram_clk_cntl = 0x02400000,
+
+ .timing_cfg_4 = 0x00000001,
+ .timing_cfg_5 = 0x04401400,
+
+ .ddr_zq_cntl = 0x89080600,
+ .ddr_wrlvl_cntl = 0x8675f606,
+ .ddr_wrlvl_cntl_2 = 0x04080700,
+ .ddr_wrlvl_cntl_3 = 0x00000009,
+
+ .ddr_cdr1 = 0x80040000,
+ .ddr_cdr2 = 0x0000bc01,
+};
+
+int fsl_initdram(void)
+{
+ u32 gpporcr1 = in_le32(DCFG_BASE + DCFG_GPPORCR1);
+ phys_size_t dram_size;
+
+ switch (gpporcr1 & GPPORCR1_MEM_MASK) {
+ case GPPORCR1_MEM_2GB_CS0:
+ dram_size = 0x80000000;
+ ddr_cfg_regs.cs[1].bnds = 0;
+ ddr_cfg_regs.cs[1].config = 0;
+ ddr_cfg_regs.cs[1].config_2 = 0;
+ break;
+ case GPPORCR1_MEM_4GB_CS0_1:
+ dram_size = 0x100000000ULL;
+ break;
+ case GPPORCR1_MEM_512MB_CS0:
+ dram_size = 0x20000000;
+ fallthrough; /* for now */
+ case GPPORCR1_MEM_1GB_CS0:
+ dram_size = 0x40000000;
+ fallthrough; /* for now */
+ case GPPORCR1_MEM_4GB_CS0_2:
+ dram_size = 0x100000000ULL;
+ fallthrough; /* for now */
+ case GPPORCR1_MEM_8GB_CS0_1:
+ case GPPORCR1_MEM_8GB_CS0_1_2_3:
+ dram_size = 0x200000000ULL;
+ fallthrough; /* for now */
+ default:
+ panic("Unsupported memory configuration (%08x)\n",
+ gpporcr1 & GPPORCR1_MEM_MASK);
+ break;
+ }
+
+ if (!IS_ENABLED(CONFIG_SPL) || IS_ENABLED(CONFIG_SPL_BUILD))
+ fsl_ddr_set_memctl_regs(&ddr_cfg_regs, 0, 0);
+
+ gd->ram_size = dram_size;
+
+ return 0;
+}
diff --git a/board/kontron/sl28/sl28.c b/board/kontron/sl28/sl28.c
new file mode 100644
index 0000000000..b18127c4d1
--- /dev/null
+++ b/board/kontron/sl28/sl28.c
@@ -0,0 +1,68 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <common.h>
+#include <malloc.h>
+#include <errno.h>
+#include <fsl_ddr.h>
+#include <fdt_support.h>
+#include <linux/libfdt.h>
+#include <env_internal.h>
+#include <asm/arch-fsl-layerscape/soc.h>
+#include <asm/arch-fsl-layerscape/fsl_icid.h>
+#include <i2c.h>
+#include <asm/arch/soc.h>
+#include <fsl_immap.h>
+#include <netdev.h>
+
+#include <fdtdec.h>
+#include <miiphy.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int board_init(void)
+{
+ if (CONFIG_IS_ENABLED(FSL_CAAM))
+ sec_init();
+
+ return 0;
+}
+
+int board_eth_init(struct bd_info *bis)
+{
+ return pci_eth_init(bis);
+}
+
+int checkboard(void)
+{
+ printf("EL: %d\n", current_el());
+ return 0;
+}
+
+void detail_board_ddr_info(void)
+{
+ puts("\nDDR ");
+ print_size(gd->bd->bi_dram[0].size + gd->bd->bi_dram[1].size, "");
+ print_ddr_info(0);
+}
+
+int ft_board_setup(void *blob, struct bd_info *bd)
+{
+ u64 base[CONFIG_NR_DRAM_BANKS];
+ u64 size[CONFIG_NR_DRAM_BANKS];
+ int nbanks = CONFIG_NR_DRAM_BANKS;
+ int i;
+
+ ft_cpu_setup(blob, bd);
+
+ /* fixup DT for the two GPP DDR banks */
+ for (i = 0; i < nbanks; i++) {
+ base[i] = gd->bd->bi_dram[i].start;
+ size[i] = gd->bd->bi_dram[i].size;
+ }
+
+ fdt_fixup_memory_banks(blob, base, size, nbanks);
+
+ fdt_fixup_icid(blob);
+
+ return 0;
+}
diff --git a/board/kontron/sl28/spl.c b/board/kontron/sl28/spl.c
new file mode 100644
index 0000000000..fa5829eee0
--- /dev/null
+++ b/board/kontron/sl28/spl.c
@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/spl.h>
+
+#define DCFG_RCWSR25 0x160
+#define GPINFO_HW_VARIANT_MASK 0xff
+
+int sl28_variant(void)
+{
+ return in_le32(DCFG_BASE + DCFG_RCWSR25) & GPINFO_HW_VARIANT_MASK;
+}
+
+int board_fit_config_name_match(const char *name)
+{
+ int variant = sl28_variant();
+
+ switch (variant) {
+ case 3:
+ return strcmp(name, "fsl-ls1028a-kontron-sl28-var3");
+ case 4:
+ return strcmp(name, "fsl-ls1028a-kontron-sl28-var4");
+ default:
+ return strcmp(name, "fsl-ls1028a-kontron-sl28");
+ }
+}
+
+void board_boot_order(u32 *spl_boot_list)
+{
+ spl_boot_list[0] = BOOT_DEVICE_SPI;
+}
diff --git a/configs/kontron_sl28_defconfig b/configs/kontron_sl28_defconfig
new file mode 100644
index 0000000000..68edeed1fc
--- /dev/null
+++ b/configs/kontron_sl28_defconfig
@@ -0,0 +1,107 @@
+CONFIG_ARM=y
+CONFIG_TARGET_SL28=y
+CONFIG_SPL_LIBCOMMON_SUPPORT=y
+CONFIG_SPL_LIBGENERIC_SUPPORT=y
+CONFIG_SYS_MALLOC_F_LEN=0x4000
+CONFIG_NR_DRAM_BANKS=2
+CONFIG_ENV_SIZE=0x2000
+CONFIG_ENV_OFFSET=0x3e0000
+CONFIG_ENV_SECT_SIZE=0x10000
+CONFIG_SYS_SPI_U_BOOT_OFFS=0x230000
+CONFIG_DM_GPIO=y
+CONFIG_SPL_DM_SPI=y
+CONFIG_SPL_TEXT_BASE=0x18010000
+CONFIG_SYS_FSL_SDHC_CLK_DIV=1
+CONFIG_SPL_SERIAL_SUPPORT=y
+CONFIG_SPL_SIZE_LIMIT=0x20000
+CONFIG_SPL_SIZE_LIMIT_PROVIDE_STACK=0x0
+CONFIG_SPL=y
+CONFIG_ENV_OFFSET_REDUND=0x3f0000
+CONFIG_SPL_SPI_FLASH_SUPPORT=y
+CONFIG_SPL_SPI_SUPPORT=y
+# CONFIG_PSCI_RESET is not set
+CONFIG_DEFAULT_DEVICE_TREE="fsl-ls1028a-kontron-sl28"
+CONFIG_AHCI=y
+CONFIG_DISTRO_DEFAULTS=y
+CONFIG_FIT=y
+CONFIG_SPL_LOAD_FIT=y
+# CONFIG_USE_SPL_FIT_GENERATOR is not set
+CONFIG_OF_BOARD_SETUP=y
+CONFIG_OF_STDOUT_VIA_ALIAS=y
+CONFIG_BOOTDELAY=10
+CONFIG_USE_BOOTARGS=y
+CONFIG_BOARD_LATE_INIT=y
+CONFIG_PCI_INIT_R=y
+CONFIG_SPL_BOARD_INIT=y
+CONFIG_SPL_SEPARATE_BSS=y
+CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT=y
+CONFIG_SPL_DM_SPI_FLASH=y
+CONFIG_SPL_SPI_LOAD=y
+CONFIG_CMD_ASKENV=y
+CONFIG_CMD_GREPENV=y
+CONFIG_CMD_DM=y
+CONFIG_CMD_GPT=y
+CONFIG_CMD_I2C=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_PCI=y
+CONFIG_CMD_USB=y
+CONFIG_CMD_WDT=y
+CONFIG_CMD_CACHE=y
+CONFIG_CMD_RNG=y
+CONFIG_MP=y
+CONFIG_OF_CONTROL=y
+CONFIG_SPL_OF_CONTROL=y
+CONFIG_OF_LIST=""
+CONFIG_ENV_OVERWRITE=y
+CONFIG_ENV_IS_IN_SPI_FLASH=y
+CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
+CONFIG_NET_RANDOM_ETHADDR=y
+CONFIG_NETCONSOLE=y
+CONFIG_DM=y
+CONFIG_SPL_DM=y
+CONFIG_SPL_DM_SEQ_ALIAS=y
+CONFIG_SCSI_AHCI=y
+CONFIG_FSL_CAAM=y
+CONFIG_SYS_FSL_DDR3=y
+CONFIG_DM_I2C=y
+CONFIG_I2C_SET_DEFAULT_BUS_NUM=y
+CONFIG_I2C_DEFAULT_BUS_NUMBER=0
+CONFIG_I2C_MUX=y
+CONFIG_DM_MMC=y
+CONFIG_FSL_ESDHC=y
+CONFIG_DM_SPI_FLASH=y
+CONFIG_SPI_FLASH_WINBOND=y
+# CONFIG_SPI_FLASH_USE_4K_SECTORS is not set
+CONFIG_PHYLIB=y
+CONFIG_PHY_ATHEROS=y
+CONFIG_DM_ETH=y
+CONFIG_DM_MDIO=y
+CONFIG_PHY_GIGE=y
+CONFIG_E1000=y
+CONFIG_FSL_ENETC=y
+CONFIG_NVME=y
+CONFIG_PCI=y
+CONFIG_DM_PCI=y
+CONFIG_DM_PCI_COMPAT=y
+CONFIG_PCIE_ECAM_GENERIC=y
+CONFIG_PCIE_LAYERSCAPE_RC=y
+CONFIG_DM_RNG=y
+CONFIG_DM_RTC=y
+CONFIG_RTC_RV8803=y
+CONFIG_SCSI=y
+CONFIG_DM_SCSI=y
+CONFIG_SYS_NS16550=y
+CONFIG_SPI=y
+CONFIG_DM_SPI=y
+CONFIG_FSL_DSPI=y
+CONFIG_NXP_FSPI=y
+CONFIG_USB=y
+CONFIG_DM_USB=y
+# CONFIG_SPL_DM_USB is not set
+CONFIG_USB_XHCI_HCD=y
+CONFIG_USB_XHCI_DWC3=y
+CONFIG_WDT=y
+CONFIG_WDT_SP805=y
+CONFIG_OF_LIBFDT_ASSUME_MASK=0x0
+CONFIG_OF_LIBFDT_OVERLAY=y
+CONFIG_EFI_LOADER_BOUNCE_BUFFER=y
diff --git a/doc/board/index.rst b/doc/board/index.rst
index 63935abcd7..4b6a996eb1 100644
--- a/doc/board/index.rst
+++ b/doc/board/index.rst
@@ -15,6 +15,7 @@ Board-specific doc
freescale/index
google/index
intel/index
+ kontron/index
renesas/index
rockchip/index
sifive/index
diff --git a/doc/board/kontron/index.rst b/doc/board/kontron/index.rst
new file mode 100644
index 0000000000..543b22e2f5
--- /dev/null
+++ b/doc/board/kontron/index.rst
@@ -0,0 +1,9 @@
+.. SPDX-License-Identifier: GPL-2.0+
+
+Kontron
+=======
+
+.. toctree::
+ :maxdepth: 2
+
+ sl28
diff --git a/doc/board/kontron/sl28.rst b/doc/board/kontron/sl28.rst
new file mode 100644
index 0000000000..e458fbc607
--- /dev/null
+++ b/doc/board/kontron/sl28.rst
@@ -0,0 +1,160 @@
+.. SPDX-License-Identifier: GPL-2.0+
+
+Summary
+=======
+
+The Kontron SMARC-sAL28 board is a TSN-enabled dual-core ARM A72
+processor module with an on-chip 6-port TSN switch and a 3D GPU.
+
+
+Quickstart
+==========
+
+Compile U-Boot
+--------------
+
+Configure and compile the binary::
+
+ $ make kontron_sl28_defconfig
+ $ CROSS_COMPILE=aarch64-linux-gnu make
+
+Copy u-boot.rom to a TFTP server.
+
+Install the bootloader on the board
+-----------------------------------
+
+Please note, this bootloader doesn't support the builtin watchdog (yet),
+therefore you have to disable it, see below. Otherwise you'll end up in
+the failsafe bootloader on every reset::
+
+ > tftp path/to/u-boot.rom
+ > sf probe 0
+ > sf update $fileaddr 0x210000 $filesize
+
+The board is fully failsafe, you can't break anything. But because you've
+disabled the builtin watchdog you might have to manually enter failsafe
+mode by asserting the ``FORCE_RECOV#`` line during board reset.
+
+Disable the builtin watchdog
+----------------------------
+
+- boot into the failsafe bootloader, either by asserting the
+ ``FORCE_RECOV#`` line or if you still have the original bootloader
+ installed you can use the command::
+
+ > wdt dev cpld_watchdog at 4a; wdt expire 1
+
+- in the failsafe bootloader use the "sl28 nvm" command to disable
+ the automatic start of the builtin watchdog::
+
+ > sl28 nvm 0008
+
+- power-cycle the board
+
+
+Useful I2C tricks
+=================
+
+The board has a board management controller which is not supported in
+u-boot (yet). But you can use the i2c command to access it.
+
+- reset into failsafe bootloader::
+
+ > i2c mw 4a 5.1 0; i2c mw 4a 6.1 6b; i2c mw 4a 4.1 42
+
+- read board management controller version::
+
+ > i2c md 4a 3.1 1
+
+
+Non-volatile Board Configuration Bits
+=====================================
+
+The board has 16 configuration bits which are stored in the CPLD and are
+non-volatile. These can be changed by the `sl28 nvm` command.
+
+=== ===============================================================
+Bit Description
+=== ===============================================================
+ 0 Power-on inhibit
+ 1 Enable eMMC boot
+ 2 Enable watchdog by default
+ 3 Disable failsafe watchdog by default
+ 4 Clock generator selection bit 0
+ 5 Clock generator selection bit 1
+ 6 Disable CPU SerDes clock #2 and PCIe-A clock output
+ 7 Disable PCIe-B and PCIe-C clock output
+ 8 Keep onboard PHYs in reset
+ 9 Keep USB hub in reset
+ 10 Keep eDP-to-LVDS converter in reset
+ 11 Enable I2C stuck recovery on I2C PM and I2C GP busses
+ 12 Enable automatic onboard PHY H/W reset
+ 13 reserved
+ 14 Used by the RCW to determine boot source
+ 15 Used by the RCW to determine boot source
+=== ===============================================================
+
+Please note, that if the board is in failsafe mode, the bits will have the
+factory defaults, ie. all bits are off.
+
+Power-On Inhibit
+----------------
+
+If this is set, the board doesn't automatically turn on when power is
+applied. Instead, the user has to either toggle the ``PWR_BTN#`` line or
+use any other wake-up source such as RTC alarm or Wake-on-LAN.
+
+eMMC Boot
+---------
+
+If this is set, the RCW will be fetched from the on-board eMMC at offset
+1MiB. For further details, have a look at the `Reset Configuration Word
+Documentation`_.
+
+Watchdog
+--------
+
+By default, the CPLD watchdog is enabled in failsafe mode. Using bits 2 and
+3, the user can change its mode or disable it altogether.
+
+===== ===== ===============================
+Bit 2 Bit 3 Description
+===== ===== ===============================
+ 0 0 Watchdog enabled, failsafe mode
+ 0 1 Watchdog disabled
+ 1 0 Watchdog enabled, failsafe mode
+ 1 1 Watchdog enabled, normal mode
+===== ===== ===============================
+
+Clock Generator Select
+----------------------
+
+The board is prepared to supply different SerDes clock speeds. But for now,
+only setting 0 is supported, otherwise the CPU will hang because the PLL
+will not lock.
+
+Clock Output Disable And Keep Devices In Reset
+----------------------------------------------
+
+To safe power, the user might disable different devices and clock output of
+the board. It is not supported to disable the "CPU SerDes clock #2" for
+now, otherwise the CPU will hang because the PLL will not lock.
+
+Automatic reset of the onboard PHYs
+-----------------------------------
+
+By default, there is no hardware reset of the onboard PHY. This is because
+for Wake-on-LAN, some registers have to retain their values. If you don't
+use the WOL feature and a soft reset of the PHY is not enough you can
+enable the hardware reset. The onboard PHY hardware reset follows the
+power-on reset.
+
+
+Further documentation
+=====================
+
+- `Vendor Documentation`_
+- `Reset Configuration Word Documentation`_
+
+.. _Reset Configuration Word Documentation: https://raw.githubusercontent.com/kontron/rcw-smarc-sal28/master/README.md
+.. _Vendor Documentation: https://raw.githubusercontent.com/kontron/u-boot-smarc-sal28/master/board/kontron/sl28/README.md
diff --git a/include/configs/kontron_sl28.h b/include/configs/kontron_sl28.h
new file mode 100644
index 0000000000..afe512a8c7
--- /dev/null
+++ b/include/configs/kontron_sl28.h
@@ -0,0 +1,108 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __SL28_H
+#define __SL28_H
+
+#include <asm/arch/stream_id_lsch3.h>
+#include <asm/arch/config.h>
+#include <asm/arch/soc.h>
+
+/* we don't use hwconfig but this has to be defined.. */
+#define HWCONFIG_BUFFER_SIZE 256
+
+/* we don't have secure memory unless we have a BL31 */
+#ifndef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
+#undef CONFIG_SYS_MEM_RESERVE_SECURE
+#endif
+
+/* DDR */
+#define CONFIG_DDR_ECC
+#define CONFIG_ECC_INIT_VIA_DDRCONTROLLER
+#define CONFIG_MEM_INIT_VALUE 0xdeadbeef
+
+#define CONFIG_VERY_BIG_RAM
+#define CONFIG_CHIP_SELECTS_PER_CTRL 4
+#define CONFIG_DIMM_SLOTS_PER_CTLR 1
+#define CONFIG_SYS_DDR_SDRAM_BASE 0x80000000
+#define CONFIG_SYS_FSL_DDR_SDRAM_BASE_PHY 0
+#define CONFIG_SYS_SDRAM_BASE CONFIG_SYS_DDR_SDRAM_BASE
+#define CONFIG_SYS_DDR_BLOCK2_BASE 0x2080000000ULL
+#define CONFIG_SYS_FSL_DDR_MAIN_NUM_CTRLS 1
+
+/* early stack pointer */
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_FSL_OCRAM_BASE + 0xeff0)
+
+/* memtest command */
+#define CONFIG_SYS_MEMTEST_START 0x80000000
+#define CONFIG_SYS_MEMTEST_END 0x9fffffff
+
+/* SMP */
+#define CPU_RELEASE_ADDR secondary_boot_addr
+
+/* generic timer */
+#define COUNTER_FREQUENCY 25000000
+
+/* size of malloc() pool */
+#define CONFIG_SYS_MALLOC_LEN (CONFIG_ENV_SIZE + 2048 * 1024)
+
+/* early heap for SPL DM */
+#define CONFIG_MALLOC_F_ADDR CONFIG_SYS_FSL_OCRAM_BASE
+
+/* serial port */
+#define CONFIG_SYS_NS16550_SERIAL
+#define CONFIG_SYS_NS16550_REG_SIZE 1
+#define CONFIG_SYS_NS16550_CLK (get_bus_freq(0) / 2)
+#define CONFIG_SYS_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 }
+
+#define CONFIG_SYS_CLK_FREQ 100000000
+#define CONFIG_DDR_CLK_FREQ 100000000
+#define COUNTER_FREQUENCY_REAL (CONFIG_SYS_CLK_FREQ / 4)
+
+/* MMC */
+#ifdef CONFIG_MMC
+#define CONFIG_SYS_FSL_MMC_HAS_CAPBLT_VS33
+#endif
+
+/* ethernet */
+#define CONFIG_SYS_RX_ETH_BUFFER 8
+
+/* SPL */
+#define CONFIG_SPL_BSS_START_ADDR 0x80100000
+#define CONFIG_SPL_BSS_MAX_SIZE 0x00100000
+#define CONFIG_SPL_MAX_SIZE 0x20000
+#define CONFIG_SPL_STACK (CONFIG_SYS_FSL_OCRAM_BASE + 0x9ff0)
+
+#define CONFIG_SYS_SPL_MALLOC_SIZE 0x00100000
+#define CONFIG_SYS_SPL_MALLOC_START 0x80200000
+#define CONFIG_SYS_MONITOR_LEN (1024 * 1024)
+
+/* environment */
+/* see include/configs/ti_armv7_common.h */
+#define CONFIG_SYS_LOAD_ADDR 0x82000000
+#define ENV_MEM_LAYOUT_SETTINGS \
+ "loadaddr=0x82000000\0" \
+ "kernel_addr_r=0x82000000\0" \
+ "fdt_addr_r=0x88000000\0" \
+ "bootm_size=0x10000000\0" \
+ "pxefile_addr_r=0x80100000\0" \
+ "scriptaddr=0x80000000\0" \
+ "ramdisk_addr_r=0x88080000\0"
+
+#define BOOT_TARGET_DEVICES(func) \
+ func(MMC, mmc, 1) \
+ func(MMC, mmc, 0) \
+ func(NVME, nvme, 0) \
+ func(USB, usb, 0) \
+ func(DHCP, dhcp, 0) \
+ func(PXE, pxe, 0)
+#include <config_distro_bootcmd.h>
+
+#define CONFIG_EXTRA_ENV_SETTINGS \
+ "env_addr=0x203e0004\0" \
+ "envload=env import -d -b ${env_addr}\0" \
+ "install_rcw=source 20200000\0" \
+ "fdtfile=freescale/fsl-ls1028a-kontron-sl28.dtb\0" \
+ ENV_MEM_LAYOUT_SETTINGS \
+ BOOTENV
+
+#endif /* __SL28_H */
--
2.20.1
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