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-rw-r--r--arch/arm/dts/Makefile2
-rw-r--r--arch/arm/dts/ste-ux500-samsung-stemmy.dts20
-rw-r--r--arch/arm/mach-u8500/Kconfig21
-rw-r--r--board/ste/stemmy/Kconfig12
-rw-r--r--board/ste/stemmy/MAINTAINERS6
-rw-r--r--board/ste/stemmy/Makefile2
-rw-r--r--board/ste/stemmy/README49
-rw-r--r--board/ste/stemmy/stemmy.c18
-rw-r--r--configs/stemmy_defconfig18
-rw-r--r--include/configs/stemmy.h29
10 files changed, 177 insertions, 0 deletions
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 44f742017e..38d0c2a92c 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -389,6 +389,8 @@ dtb-$(CONFIG_FSL_LSCH2) += fsl-ls1043a-qds-duart.dtb \
dtb-$(CONFIG_TARGET_DRAGONBOARD410C) += dragonboard410c.dtb
dtb-$(CONFIG_TARGET_DRAGONBOARD820C) += dragonboard820c.dtb
+dtb-$(CONFIG_TARGET_STEMMY) += ste-ux500-samsung-stemmy.dtb
+
dtb-$(CONFIG_STM32F4) += stm32f429-disco.dtb \
stm32429i-eval.dtb \
stm32f469-disco.dtb
diff --git a/arch/arm/dts/ste-ux500-samsung-stemmy.dts b/arch/arm/dts/ste-ux500-samsung-stemmy.dts
new file mode 100644
index 0000000000..7e7f4c823a
--- /dev/null
+++ b/arch/arm/dts/ste-ux500-samsung-stemmy.dts
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/dts-v1/;
+
+#include "ste-dbx5x0-u-boot.dtsi"
+#include "ste-ab8500.dtsi"
+
+/ {
+ compatible = "samsung,stemmy", "st-ericsson,u8500";
+
+ chosen {
+ stdout-path = &serial2;
+ };
+
+ soc {
+ /* Debugging console UART */
+ uart@80007000 {
+ status = "okay";
+ };
+ };
+};
diff --git a/arch/arm/mach-u8500/Kconfig b/arch/arm/mach-u8500/Kconfig
index 3bc76295cb..7478deb25f 100644
--- a/arch/arm/mach-u8500/Kconfig
+++ b/arch/arm/mach-u8500/Kconfig
@@ -3,4 +3,25 @@ if ARCH_U8500
config SYS_SOC
default "u8500"
+choice
+ prompt "U8500 board selection"
+
+config TARGET_STEMMY
+ bool "Samsung (stemmy) board"
+ help
+ The Samsung "stemmy" board supports Samsung smartphones released with
+ the ST-Ericsson NovaThor U8500 SoC, e.g.
+
+ - Samsung Galaxy S III mini (GT-I8190) "golden"
+ - Samsung Galaxy S Advance (GT-I9070) "janice"
+ - Samsung Galaxy Xcover 2 (GT-S7710) "skomer"
+
+ and likely others as well (untested).
+
+ See board/ste/stemmy/README for details.
+
+endchoice
+
+source "board/ste/stemmy/Kconfig"
+
endif
diff --git a/board/ste/stemmy/Kconfig b/board/ste/stemmy/Kconfig
new file mode 100644
index 0000000000..b890ba51cb
--- /dev/null
+++ b/board/ste/stemmy/Kconfig
@@ -0,0 +1,12 @@
+if TARGET_STEMMY
+
+config SYS_BOARD
+ default "stemmy"
+
+config SYS_VENDOR
+ default "ste"
+
+config SYS_CONFIG_NAME
+ default "stemmy"
+
+endif
diff --git a/board/ste/stemmy/MAINTAINERS b/board/ste/stemmy/MAINTAINERS
new file mode 100644
index 0000000000..37daabea9c
--- /dev/null
+++ b/board/ste/stemmy/MAINTAINERS
@@ -0,0 +1,6 @@
+STEMMY BOARD
+M: Stephan Gerhold <stephan@gerhold.net>
+S: Maintained
+F: board/ste/stemmy/
+F: include/configs/stemmy.h
+F: configs/stemmy_defconfig
diff --git a/board/ste/stemmy/Makefile b/board/ste/stemmy/Makefile
new file mode 100644
index 0000000000..1245099bc9
--- /dev/null
+++ b/board/ste/stemmy/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+obj-y := stemmy.o
diff --git a/board/ste/stemmy/README b/board/ste/stemmy/README
new file mode 100644
index 0000000000..81f72426f2
--- /dev/null
+++ b/board/ste/stemmy/README
@@ -0,0 +1,49 @@
+ST-Ericsson U8500 Samsung "stemmy" board
+========================================
+
+The "stemmy" board supports Samsung smartphones released with
+the ST-Ericsson NovaThor U8500 SoC, e.g.
+
+ - Samsung Galaxy S III mini (GT-I8190) "golden"
+ - Samsung Galaxy S Advance (GT-I9070) "janice"
+ - Samsung Galaxy Xcover 2 (GT-S7710) "skomer"
+
+and likely others as well (untested).
+
+At the moment, U-Boot is intended to be chain-loaded from
+the original Samsung bootloader, not replacing it entirely.
+
+Installation
+------------
+
+1. Setup cross compiler, e.g. export CROSS_COMPILE=arm-none-eabi-
+2. make stemmy_defconfig
+3. make
+
+For newer devices (golden and skomer), the U-Boot binary has to be packed into
+an Android boot image. janice boots the raw U-Boot binary from the boot partition.
+
+4. Obtain mkbootimg, e.g. https://android.googlesource.com/platform/system/core/+/refs/tags/android-7.1.2_r37/mkbootimg/mkbootimg
+5. mkbootimg \
+ --kernel=u-boot.bin \
+ --base=0x00000000 \
+ --kernel_offset=0x00100000 \
+ --ramdisk_offset=0x02000000 \
+ --tags_offset=0x00000100 \
+ --output=u-boot.img
+
+6. Enter Samsung download mode (press Power + Home + Volume Down)
+7. Flash U-Boot image to Android boot partition using Heimdall:
+ https://gitlab.com/BenjaminDobell/Heimdall
+
+ heimdall flash --Kernel u-boot.(bin|img)
+
+8. After reboot U-Boot prompt should appear via UART.
+
+UART
+----
+
+UART is available through the micro USB port, similar to the Carkit standard.
+With a ~619kOhm resistor between ID and GND, 1.8V RX/TX is available at D+/D-.
+
+Make sure to connect the UART cable *before* turning on the phone.
diff --git a/board/ste/stemmy/stemmy.c b/board/ste/stemmy/stemmy.c
new file mode 100644
index 0000000000..8cf6f18755
--- /dev/null
+++ b/board/ste/stemmy/stemmy.c
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2019 Stephan Gerhold <stephan@gerhold.net>
+ */
+#include <common.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+ gd->ram_size = get_ram_size(CONFIG_SYS_SDRAM_BASE, CONFIG_SYS_SDRAM_SIZE);
+ return 0;
+}
+
+int board_init(void)
+{
+ return 0;
+}
diff --git a/configs/stemmy_defconfig b/configs/stemmy_defconfig
new file mode 100644
index 0000000000..6908ef3448
--- /dev/null
+++ b/configs/stemmy_defconfig
@@ -0,0 +1,18 @@
+CONFIG_ARM=y
+CONFIG_ARCH_U8500=y
+CONFIG_SYS_TEXT_BASE=0x100000
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_SYS_CONSOLE_INFO_QUIET=y
+CONFIG_HUSH_PARSER=y
+CONFIG_CMD_CONFIG=y
+CONFIG_CMD_LICENSE=y
+CONFIG_CMD_DM=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_PART=y
+CONFIG_CMD_GETTIME=y
+CONFIG_EFI_PARTITION=y
+CONFIG_DEFAULT_DEVICE_TREE="ste-ux500-samsung-stemmy"
+# CONFIG_NET is not set
+# CONFIG_MMC_HW_PARTITIONING is not set
+# CONFIG_EFI_LOADER is not set
diff --git a/include/configs/stemmy.h b/include/configs/stemmy.h
new file mode 100644
index 0000000000..922eec43ee
--- /dev/null
+++ b/include/configs/stemmy.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2019 Stephan Gerhold <stephan@gerhold.net>
+ */
+#ifndef __CONFIGS_STEMMY_H
+#define __CONFIGS_STEMMY_H
+
+#include <linux/sizes.h>
+
+#define CONFIG_SKIP_LOWLEVEL_INIT /* Loaded by another bootloader */
+#define CONFIG_SYS_MALLOC_LEN SZ_2M
+
+/* Physical Memory Map */
+#define PHYS_SDRAM_1 0x00000000 /* DDR-SDRAM Bank #1 */
+#define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM_1
+#define CONFIG_SYS_SDRAM_SIZE SZ_1G
+#define CONFIG_SYS_INIT_RAM_SIZE 0x00100000
+#define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_SDRAM_BASE + \
+ CONFIG_SYS_INIT_RAM_SIZE - \
+ GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR CONFIG_SYS_GBL_DATA_OFFSET
+
+/* FIXME: This should be loaded from device tree... */
+#define CONFIG_SYS_L2_PL310
+#define CONFIG_SYS_PL310_BASE 0xa0412000
+
+#define CONFIG_SYS_LOAD_ADDR 0x00100000
+
+#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-28 04:29:44 +0000