Merge https://gitlab.denx.de/u-boot/custodians/u-boot-riscvWIP/24Jul2020

- Fix SiFive HiFive Unleashed board booting failure problem.
- Enable SiFive fu540 PWM driver.
- Support SiFive fu540: SPI boot.
- Update OpenSBI used for RISC-V CI testing.
- Revert "riscv: Allow use of reset drivers".
- Revert "Revert "riscv: sifive: fu540: Add gpio-restart support"".
- sysreset: syscon:
        - Don't assume default value for offset and mask property.
        - Support value property.
- qemu: Add syscon reboot and poweroff support.
- Fix SIFIVE debug serial dependency.
- Fix linking error when building u-boot-spl with no SMP support.
- AE350 use fdtdec_get_addr_size_auto_noparent to parse smc reg.
- Make memory node available to SPL in hifive-unleashed-a00-u-boot.dtsi
- SiFive fu540 avoid using hardcoded ram base and size.

20 files changed, 178 insertions, 51 deletions

diff --git a/.azure-pipelines.yml b/.azure-pipelines.yml
index 97c89fc067..303857c1fc 100644
--- a/.azure-pipelines.yml
+++ b/.azure-pipelines.yml
@@ -295,12 +295,12 @@ jobs:
           grub-mkimage --prefix=\"\" -o ~/grub_x86.efi -O i386-efi normal  echo lsefimmap lsefi lsefisystab efinet tftp minicmd
           grub-mkimage --prefix=\"\" -o ~/grub_x64.efi -O x86_64-efi normal  echo lsefimmap lsefi lsefisystab efinet tftp minicmd
           if [[ "${TEST_PY_BD}" == "qemu-riscv32_spl" ]]; then
-              wget -O - https://github.com/riscv/opensbi/releases/download/v0.6/opensbi-0.6-rv32-bin.tar.xz | tar -C /tmp -xJ;
-              export OPENSBI=/tmp/opensbi-0.6-rv32-bin/platform/qemu/virt/firmware/fw_dynamic.bin;
+              wget -O - https://github.com/riscv/opensbi/releases/download/v0.8/opensbi-0.8-rv-bin.tar.xz | tar -C /tmp -xJ;
+              export OPENSBI=/tmp/opensbi-0.8-rv-bin/share/opensbi/ilp32/generic/firmware/fw_dynamic.bin;
           fi
           if [[ "${TEST_PY_BD}" == "qemu-riscv64_spl" ]]; then
-              wget -O - https://github.com/riscv/opensbi/releases/download/v0.6/opensbi-0.6-rv64-bin.tar.xz | tar -C /tmp -xJ;
-              export OPENSBI=/tmp/opensbi-0.6-rv64-bin/platform/qemu/virt/firmware/fw_dynamic.bin;
+              wget -O - https://github.com/riscv/opensbi/releases/download/v0.8/opensbi-0.8-rv-bin.tar.xz | tar -C /tmp -xJ;
+              export OPENSBI=/tmp/opensbi-0.8-rv-bin/share/opensbi/lp64/generic/firmware/fw_dynamic.bin;
           fi
           # the below corresponds to .gitlab-ci.yml "script"
           cd ${WORK_DIR}
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d2f864669d..e8ad3f42e5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -21,12 +21,12 @@ stages:
     - grub-mkimage --prefix="" -o ~/grub_x86.efi -O i386-efi normal  echo lsefimmap lsefi lsefisystab efinet tftp minicmd
     - grub-mkimage --prefix="" -o ~/grub_x64.efi -O x86_64-efi normal  echo lsefimmap lsefi lsefisystab efinet tftp minicmd
     - if [[ "${TEST_PY_BD}" == "qemu-riscv32_spl" ]]; then
-        wget -O - https://github.com/riscv/opensbi/releases/download/v0.6/opensbi-0.6-rv32-bin.tar.xz | tar -C /tmp -xJ;
-        export OPENSBI=/tmp/opensbi-0.6-rv32-bin/platform/qemu/virt/firmware/fw_dynamic.bin;
+        wget -O - https://github.com/riscv/opensbi/releases/download/v0.8/opensbi-0.8-rv-bin.tar.xz | tar -C /tmp -xJ;
+        export OPENSBI=/tmp/opensbi-0.8-rv-bin/share/opensbi/ilp32/generic/firmware/fw_dynamic.bin;
       fi
     - if [[ "${TEST_PY_BD}" == "qemu-riscv64_spl" ]]; then
-        wget -O - https://github.com/riscv/opensbi/releases/download/v0.6/opensbi-0.6-rv64-bin.tar.xz | tar -C /tmp -xJ;
-        export OPENSBI=/tmp/opensbi-0.6-rv64-bin/platform/qemu/virt/firmware/fw_dynamic.bin;
+        wget -O - https://github.com/riscv/opensbi/releases/download/v0.8/opensbi-0.8-rv-bin.tar.xz | tar -C /tmp -xJ;
+        export OPENSBI=/tmp/opensbi-0.8-rv-bin/share/opensbi/lp64/generic/firmware/fw_dynamic.bin;
       fi
 
   after_script:
diff --git a/.travis.yml b/.travis.yml
index 1ff140855e..96fd55fe1e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -204,12 +204,12 @@ before_script:
        popd;
     fi
   - if [[ "${TEST_PY_BD}" == "qemu-riscv32_spl" ]]; then
-       wget -O - https://github.com/riscv/opensbi/releases/download/v0.6/opensbi-0.6-rv32-bin.tar.xz | tar -C /tmp -xJ;
-       export OPENSBI=/tmp/opensbi-0.6-rv32-bin/platform/qemu/virt/firmware/fw_dynamic.bin;
+       wget -O - https://github.com/riscv/opensbi/releases/download/v0.8/opensbi-0.8-rv-bin.tar.xz | tar -C /tmp -xJ;
+       export OPENSBI=/tmp/opensbi-0.8-rv-bin/share/opensbi/ilp32/generic/firmware/fw_dynamic.bin;
     fi
   - if [[ "${TEST_PY_BD}" == "qemu-riscv64_spl" ]]; then
-       wget -O - https://github.com/riscv/opensbi/releases/download/v0.6/opensbi-0.6-rv64-bin.tar.xz | tar -C /tmp -xJ;
-       export OPENSBI=/tmp/opensbi-0.6-rv64-bin/platform/qemu/virt/firmware/fw_dynamic.bin;
+       wget -O - https://github.com/riscv/opensbi/releases/download/v0.8/opensbi-0.8-rv-bin.tar.xz | tar -C /tmp -xJ;
+       export OPENSBI=/tmp/opensbi-0.8-rv-bin/share/opensbi/lp64/generic/firmware/fw_dynamic.bin;
     fi
 
 script:
diff --git a/arch/riscv/cpu/cpu.c b/arch/riscv/cpu/cpu.c
index bbd6c15352..bfa2d4a426 100644
--- a/arch/riscv/cpu/cpu.c
+++ b/arch/riscv/cpu/cpu.c
@@ -107,7 +107,7 @@ int arch_cpu_init_dm(void)
 #endif
 	}
 
-#ifdef CONFIG_SMP
+#if CONFIG_IS_ENABLED(SMP)
 	ret = riscv_init_ipi();
 	if (ret)
 		return ret;
diff --git a/arch/riscv/cpu/fu540/Kconfig b/arch/riscv/cpu/fu540/Kconfig
index e9302e87c0..2dcad8e27f 100644
--- a/arch/riscv/cpu/fu540/Kconfig
+++ b/arch/riscv/cpu/fu540/Kconfig
@@ -13,3 +13,16 @@ config SIFIVE_FU540
 	imply SPL_CPU_SUPPORT
 	imply SPL_OPENSBI
 	imply SPL_LOAD_FIT
+
+if ENV_IS_IN_SPI_FLASH
+
+config ENV_OFFSET
+	default 0x505000
+
+config ENV_SIZE
+	default 0x20000
+
+config ENV_SECT_SIZE
+	default 0x10000
+
+endif # ENV_IS_IN_SPI_FLASH
diff --git a/arch/riscv/cpu/start.S b/arch/riscv/cpu/start.S
index f408e41ab9..bf9fdf369b 100644
--- a/arch/riscv/cpu/start.S
+++ b/arch/riscv/cpu/start.S
@@ -193,6 +193,7 @@ spl_stack_gd_setup:
 	mv	sp, s0
 #endif
 
+#if CONFIG_IS_ENABLED(SMP)
 	/* set new stack and global data pointer on secondary harts */
 spl_secondary_hart_stack_gd_setup:
 	la	a0, secondary_hart_relocate
@@ -207,6 +208,7 @@ spl_secondary_hart_stack_gd_setup:
 	la	a0, secondary_harts_relocation_error
 	jal	printf
 	jal	hang
+#endif
 
 	/* set new global data pointer on main hart */
 1:	mv	gp, s0
diff --git a/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi b/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi
index e037150520..5d0c928b29 100644
--- a/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi
+++ b/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi
@@ -16,6 +16,14 @@
 		spi2 = &qspi2;
 	};
 
+	config {
+		u-boot,spl-payload-offset = <0x105000>; /* loader2 @1044KB */
+	};
+
+	memory@80000000 {
+		u-boot,dm-spl;
+	};
+
 	hfclk {
 		u-boot,dm-spl;
 	};
@@ -26,6 +34,14 @@
 
 };
 
+&qspi0 {
+	u-boot,dm-spl;
+
+	flash@0 {
+		u-boot,dm-spl;
+	};
+};
+
 &qspi2 {
 	mmc@0 {
 		u-boot,dm-spl;
diff --git a/arch/riscv/lib/reset.c b/arch/riscv/lib/reset.c
index 6008bbe78e..8779c619cc 100644
--- a/arch/riscv/lib/reset.c
+++ b/arch/riscv/lib/reset.c
@@ -7,7 +7,6 @@
 #include <command.h>
 #include <hang.h>
 
-#ifndef CONFIG_SYSRESET
 int do_reset(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 {
 	printf("resetting ...\n");
@@ -17,4 +16,3 @@ int do_reset(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 
 	return 0;
 }
-#endif
diff --git a/arch/riscv/lib/sifive_clint.c b/arch/riscv/lib/sifive_clint.c
index 78fc6c868d..b9a2c649cc 100644
--- a/arch/riscv/lib/sifive_clint.c
+++ b/arch/riscv/lib/sifive_clint.c
@@ -26,6 +26,9 @@ DECLARE_GLOBAL_DATA_PTR;
 
 int riscv_get_time(u64 *time)
 {
+	/* ensure timer register base has a sane value */
+	riscv_init_ipi();
+
 	*time = readq((void __iomem *)MTIME_REG(gd->arch.clint));
 
 	return 0;
@@ -33,6 +36,9 @@ int riscv_get_time(u64 *time)
 
 int riscv_set_timecmp(int hart, u64 cmp)
 {
+	/* ensure timer register base has a sane value */
+	riscv_init_ipi();
+
 	writeq(cmp, (void __iomem *)MTIMECMP_REG(gd->arch.clint, hart));
 
 	return 0;
@@ -40,11 +46,13 @@ int riscv_set_timecmp(int hart, u64 cmp)
 
 int riscv_init_ipi(void)
 {
-	long *ret = syscon_get_first_range(RISCV_SYSCON_CLINT);
+	if (!gd->arch.clint) {
+		long *ret = syscon_get_first_range(RISCV_SYSCON_CLINT);
 
-	if (IS_ERR(ret))
-		return PTR_ERR(ret);
-	gd->arch.clint = ret;
+		if (IS_ERR(ret))
+			return PTR_ERR(ret);
+		gd->arch.clint = ret;
+	}
 
 	return 0;
 }
diff --git a/board/AndesTech/ax25-ae350/ax25-ae350.c b/board/AndesTech/ax25-ae350/ax25-ae350.c
index add0d56ef2..59a43e4dcc 100644
--- a/board/AndesTech/ax25-ae350/ax25-ae350.c
+++ b/board/AndesTech/ax25-ae350/ax25-ae350.c
@@ -71,7 +71,8 @@ int smc_init(void)
 	if (node < 0)
 		return -FDT_ERR_NOTFOUND;
 
-	addr = fdtdec_get_addr(blob, node, "reg");
+	addr = fdtdec_get_addr_size_auto_noparent(blob, node,
+		"reg", 0, NULL, false);
 
 	if (addr == FDT_ADDR_T_NONE)
 		return -EINVAL;
diff --git a/board/emulation/qemu-riscv/Kconfig b/board/emulation/qemu-riscv/Kconfig
index ad99b08b44..617c4aa33f 100644
--- a/board/emulation/qemu-riscv/Kconfig
+++ b/board/emulation/qemu-riscv/Kconfig
@@ -53,5 +53,9 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	imply NVME
 	imply SPL_RAM_SUPPORT
 	imply SPL_RAM_DEVICE
+	imply SYSRESET
+	imply SYSRESET_SYSCON
+	imply CMD_POWEROFF
+	imply SYSRESET_CMD_POWEROFF
 
 endif
diff --git a/board/sifive/fu540/Kconfig b/board/sifive/fu540/Kconfig
index 86193d7668..f3217f62c4 100644
--- a/board/sifive/fu540/Kconfig
+++ b/board/sifive/fu540/Kconfig
@@ -27,6 +27,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	def_bool y
 	select SIFIVE_FU540
 	select SUPPORT_SPL
+	select ENV_IS_IN_SPI_FLASH
 	select RAM
 	select SPL_RAM if SPL
 	imply CMD_DHCP
@@ -65,5 +66,9 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	imply SMP
 	imply MISC
 	imply SIFIVE_OTP
+	imply DM_PWM
+	imply PWM_SIFIVE
+	imply SYSRESET
+	imply SYSRESET_GPIO
 
 endif
diff --git a/board/sifive/fu540/fu540.c b/board/sifive/fu540/fu540.c
index 27ff52f903..57753ba50b 100644
--- a/board/sifive/fu540/fu540.c
+++ b/board/sifive/fu540/fu540.c
@@ -10,6 +10,7 @@
 #include <env.h>
 #include <init.h>
 #include <log.h>
+#include <linux/bitops.h>
 #include <linux/bug.h>
 #include <linux/delay.h>
 #include <linux/io.h>
@@ -128,14 +129,26 @@ int board_init(void)
 }
 
 #ifdef CONFIG_SPL
+#define MODE_SELECT_REG		0x1000
+#define MODE_SELECT_QSPI	0x6
+#define MODE_SELECT_SD		0xb
+#define MODE_SELECT_MASK	GENMASK(3, 0)
+
 u32 spl_boot_device(void)
 {
-#ifdef CONFIG_SPL_MMC_SUPPORT
-	return BOOT_DEVICE_MMC1;
-#else
-	puts("Unknown boot device\n");
-	hang();
-#endif
+	u32 mode_select = readl((void *)MODE_SELECT_REG);
+	u32 boot_device = mode_select & MODE_SELECT_MASK;
+
+	switch (boot_device) {
+	case MODE_SELECT_QSPI:
+		return BOOT_DEVICE_SPI;
+	case MODE_SELECT_SD:
+		return BOOT_DEVICE_MMC1;
+	default:
+		debug("Unsupported boot device 0x%x but trying MMC1\n",
+		      boot_device);
+		return BOOT_DEVICE_MMC1;
+	}
 }
 #endif
 
diff --git a/common/spl/spl_opensbi.c b/common/spl/spl_opensbi.c
index 3440bc0294..14f335f75f 100644
--- a/common/spl/spl_opensbi.c
+++ b/common/spl/spl_opensbi.c
@@ -79,11 +79,6 @@ void spl_invoke_opensbi(struct spl_image_info *spl_image)
 	invalidate_icache_all();
 
 #ifdef CONFIG_SPL_SMP
-	/* Initialize the IPI before we use it */
-	ret = riscv_init_ipi();
-	if (ret)
-		hang();
-
 	/*
 	 * Start OpenSBI on all secondary harts and wait for acknowledgment.
 	 *
diff --git a/configs/sifive_fu540_defconfig b/configs/sifive_fu540_defconfig
index 9e00a56ce6..06e17860c6 100644
--- a/configs/sifive_fu540_defconfig
+++ b/configs/sifive_fu540_defconfig
@@ -6,6 +6,7 @@ CONFIG_SPL_DM_SPI=y
 CONFIG_SPL_MMC_SUPPORT=y
 CONFIG_NR_DRAM_BANKS=1
 CONFIG_SPL=y
+CONFIG_SPL_SPI_FLASH_SUPPORT=y
 CONFIG_SPL_SPI_SUPPORT=y
 CONFIG_TARGET_SIFIVE_FU540=y
 CONFIG_ARCH_RV64I=y
@@ -16,8 +17,11 @@ CONFIG_MISC_INIT_R=y
 CONFIG_DISPLAY_CPUINFO=y
 CONFIG_DISPLAY_BOARDINFO=y
 CONFIG_SPL_SEPARATE_BSS=y
+CONFIG_SPL_DM_SPI_FLASH=y
+CONFIG_SPL_SPI_LOAD=y
 CONFIG_SPL_YMODEM_SUPPORT=y
 CONFIG_DEFAULT_DEVICE_TREE="hifive-unleashed-a00"
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+CONFIG_SPL_DM_SEQ_ALIAS=y
 CONFIG_SPL_CLK=y
 CONFIG_DM_MTD=y
diff --git a/doc/board/sifive/fu540.rst b/doc/board/sifive/fu540.rst
index 739eefa669..1ce9ab14f5 100644
--- a/doc/board/sifive/fu540.rst
+++ b/doc/board/sifive/fu540.rst
@@ -533,3 +533,44 @@ Sample boot log from HiFive Unleashed board
 	type:   0fc63daf-8483-4772-8e79-3d69d8477de4
 	type:   linux
 	guid:   9faa81b6-39b1-4418-af5e-89c48f29c20d
+
+Booting from SPI
+----------------
+
+Use Building steps from "Booting from MMC using U-Boot SPL" section.
+
+Partition the SPI in Linux via mtdblock. (Require to boot the board in
+SD boot mode by enabling MTD block in Linux)
+
+Use prebuilt image from here [1], which support to partition the SPI flash.
+
+.. code-block:: none
+
+  # sgdisk --clear \
+  > --set-alignment=2 \
+  > --new=1:40:2087 --change-name=1:loader1 --typecode=1:5B193300-FC78-40CD-8002-E86C45580B47 \
+  > --new=2:2088:10279 --change-name=2:loader2 --typecode=2:2E54B353-1271-4842-806F-E436D6AF6985 \
+  > --new=3:10536:65494 --change-name=3:rootfs --typecode=3:0FC63DAF-8483-4772-8E79-3D69D8477DE4 \
+  > /dev/mtdblock0
+
+Program the SPI (Require to boot the board in SD boot mode)
+
+Execute below steps on U-Boot proper,
+
+.. code-block:: none
+
+  tftpboot $kernel_addr_r u-boot-spl.bin
+  sf erase 0x5000 $filesize
+  sf write $kernel_addr_r 0x5000 $filesize
+
+  tftpboot $kernel_addr_r u-boot.itb
+  sf erase 0x105000 $filesize
+  sf write $kernel_addr_r 0x105000 $filesize
+
+Power off the board
+
+Change DIP switches MSEL[3:0] are set to 0110
+
+Power up the board.
+
+[1] https://github.com/amarula/bsp-sifive
diff --git a/drivers/ram/sifive/fu540_ddr.c b/drivers/ram/sifive/fu540_ddr.c
index f8f8ca9ad5..2eef1e7565 100644
--- a/drivers/ram/sifive/fu540_ddr.c
+++ b/drivers/ram/sifive/fu540_ddr.c
@@ -8,6 +8,7 @@
 
 #include <common.h>
 #include <dm.h>
+#include <fdtdec.h>
 #include <init.h>
 #include <ram.h>
 #include <regmap.h>
@@ -39,9 +40,6 @@
 #define DENALI_PHY_1152	1152
 #define DENALI_PHY_1214	1214
 
-#define PAYLOAD_DEST	0x80000000
-#define DDR_MEM_SIZE	(8UL * 1024UL * 1024UL * 1024UL)
-
 #define DRAM_CLASS_OFFSET			8
 #define DRAM_CLASS_DDR4				0xA
 #define OPTIMAL_RMODW_EN_OFFSET			0
@@ -65,6 +63,8 @@
 #define PHY_RX_CAL_DQ0_0_OFFSET			0
 #define PHY_RX_CAL_DQ1_0_OFFSET			16
 
+DECLARE_GLOBAL_DATA_PTR;
+
 struct fu540_ddrctl {
 	volatile u32 denali_ctl[265];
 };
@@ -235,8 +235,8 @@ static int fu540_ddr_setup(struct udevice *dev)
 	struct fu540_ddr_params *params = &plat->ddr_params;
 	volatile u32 *denali_ctl =  priv->ctl->denali_ctl;
 	volatile u32 *denali_phy =  priv->phy->denali_phy;
-	const u64 ddr_size = DDR_MEM_SIZE;
-	const u64 ddr_end = PAYLOAD_DEST + ddr_size;
+	const u64 ddr_size = priv->info.size;
+	const u64 ddr_end = priv->info.base + ddr_size;
 	int ret, i;
 	u32 physet;
 
@@ -302,7 +302,7 @@ static int fu540_ddr_setup(struct udevice *dev)
 		     | (1 << MULTIPLE_OUT_OF_RANGE_OFFSET));
 
 	/* set up range protection */
-	fu540_ddr_setup_range_protection(denali_ctl, DDR_MEM_SIZE);
+	fu540_ddr_setup_range_protection(denali_ctl, priv->info.size);
 
 	/* Mask off port command error interrupt DENALI_CTL_136 */
 	setbits_le32(DENALI_CTL_136 + denali_ctl,
@@ -314,14 +314,14 @@ static int fu540_ddr_setup(struct udevice *dev)
 
 	/* check size */
 	priv->info.size = get_ram_size((long *)priv->info.base,
-				       DDR_MEM_SIZE);
+				       ddr_size);
 
 	debug("%s : %lx\n", __func__, priv->info.size);
 
 	/* check memory access for all memory */
-	if (priv->info.size != DDR_MEM_SIZE) {
+	if (priv->info.size != ddr_size) {
 		printf("DDR invalid size : 0x%lx, expected 0x%lx\n",
-		       priv->info.size, DDR_MEM_SIZE);
+		       priv->info.size, (uintptr_t)ddr_size);
 		return -EINVAL;
 	}
 
@@ -333,6 +333,11 @@ static int fu540_ddr_probe(struct udevice *dev)
 {
 	struct fu540_ddr_info *priv = dev_get_priv(dev);
 
+	/* Read memory base and size from DT */
+	fdtdec_setup_mem_size_base();
+	priv->info.base = gd->ram_base;
+	priv->info.size = gd->ram_size;
+
 #if defined(CONFIG_SPL_BUILD)
 	struct regmap *map;
 	int ret;
@@ -368,14 +373,9 @@ static int fu540_ddr_probe(struct udevice *dev)
 	priv->phy = regmap_get_range(map, 1);
 	priv->physical_filter_ctrl = regmap_get_range(map, 2);
 
-	priv->info.base = CONFIG_SYS_SDRAM_BASE;
-
-	priv->info.size = 0;
 	return fu540_ddr_setup(dev);
-#else
-	priv->info.base = CONFIG_SYS_SDRAM_BASE;
-	priv->info.size = DDR_MEM_SIZE;
 #endif
+
 	return 0;
 }
 
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 14df2e9247..e146ffc5f8 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -359,7 +359,7 @@ config DEBUG_UART_SANDBOX
 
 config DEBUG_UART_SIFIVE
 	bool "SiFive UART"
-	depends on PL01X_SERIAL
+	depends on SIFIVE_SERIAL
 	help
 	  Select this to enable a debug UART using the serial_sifive driver. You
 	  will need to provide parameters to make this work. The driver will
diff --git a/drivers/sysreset/sysreset_syscon.c b/drivers/sysreset/sysreset_syscon.c
index f64701aab3..1c47486614 100644
--- a/drivers/sysreset/sysreset_syscon.c
+++ b/drivers/sysreset/sysreset_syscon.c
@@ -19,6 +19,7 @@ struct syscon_reboot_priv {
 	struct regmap *regmap;
 	unsigned int offset;
 	unsigned int mask;
+	unsigned int value;
 };
 
 static int syscon_reboot_request(struct udevice *dev, enum sysreset_t type)
@@ -29,7 +30,7 @@ static int syscon_reboot_request(struct udevice *dev, enum sysreset_t type)
 	if (type != driver_data)
 		return -EPROTONOSUPPORT;
 
-	regmap_write(priv->regmap, priv->offset, priv->mask);
+	regmap_update_bits(priv->regmap, priv->offset, priv->mask, priv->value);
 
 	return -EINPROGRESS;
 }
@@ -41,6 +42,8 @@ static struct sysreset_ops syscon_reboot_ops = {
 int syscon_reboot_probe(struct udevice *dev)
 {
 	struct syscon_reboot_priv *priv = dev_get_priv(dev);
+	int err;
+	int mask_err, value_err;
 
 	priv->regmap = syscon_regmap_lookup_by_phandle(dev, "regmap");
 	if (IS_ERR(priv->regmap)) {
@@ -48,8 +51,27 @@ int syscon_reboot_probe(struct udevice *dev)
 		return -ENODEV;
 	}
 
-	priv->offset = dev_read_u32_default(dev, "offset", 0);
-	priv->mask = dev_read_u32_default(dev, "mask", 0);
+	err = dev_read_u32(dev, "offset", &priv->offset);
+	if (err) {
+		pr_err("unable to find offset\n");
+		return -ENOENT;
+	}
+
+	mask_err = dev_read_u32(dev, "mask", &priv->mask);
+	value_err = dev_read_u32(dev, "value", &priv->value);
+	if (mask_err && value_err) {
+		pr_err("unable to find mask and value\n");
+		return -EINVAL;
+	}
+
+	if (value_err) {
+		/* support old binding */
+		priv->value = priv->mask;
+		priv->mask = 0xffffffff;
+	} else if (mask_err) {
+		/* support value without mask*/
+		priv->mask = 0xffffffff;
+	}
 
 	return 0;
 }
diff --git a/include/configs/sifive-fu540.h b/include/configs/sifive-fu540.h
index 72c841eb9b..f21411a701 100644
--- a/include/configs/sifive-fu540.h
+++ b/include/configs/sifive-fu540.h
@@ -43,9 +43,11 @@
 #ifndef CONFIG_SPL_BUILD
 #define BOOT_TARGET_DEVICES(func) \
 	func(MMC, mmc, 0) \
+	func(SF, sf, 0) \
 	func(DHCP, dhcp, na)
 
 #include <config_distro_bootcmd.h>
+#include <environment/distro/sf.h>
 
 #define TYPE_GUID_LOADER1	"5B193300-FC78-40CD-8002-E86C45580B47"
 #define TYPE_GUID_LOADER2	"2E54B353-1271-4842-806F-E436D6AF6985"
@@ -62,13 +64,16 @@
 	"kernel_addr_r=0x84000000\0" \
 	"fdt_addr_r=0x88000000\0" \
 	"scriptaddr=0x88100000\0" \
+	"script_offset_f=0x1fff000\0" \
+	"script_size_f=0x1000\0" \
 	"pxefile_addr_r=0x88200000\0" \
 	"ramdisk_addr_r=0x88300000\0" \
 	"type_guid_gpt_loader1=" TYPE_GUID_LOADER1 "\0" \
 	"type_guid_gpt_loader2=" TYPE_GUID_LOADER2 "\0" \
 	"type_guid_gpt_system=" TYPE_GUID_SYSTEM "\0" \
 	"partitions=" PARTS_DEFAULT "\0" \
-	BOOTENV
+	BOOTENV \
+	BOOTENV_SF
 
 #define CONFIG_PREBOOT \
 	"setenv fdt_addr ${fdtcontroladdr};" \