Merge branch 'master' of https://source.denx.de/u-boot/custodians/u-boot-sh

arch/arm/dts/r8a779f4-s4sk-u-boot.dtsi

@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source extras for U-Boot for the S4SK board
+ *
+ * Copyright (C) 2024-2025 Renesas Electronics Corp.
+ */
+
+#include "r8a779f0-u-boot.dtsi"
+
+/ {
+	aliases {
+		spi0 = &rpc;
+		/delete-property/ ethernet0;
+	};
+};
+
+&pfc {
+	qspi0_pins: qspi0 {
+		groups = "qspi0_ctrl", "qspi0_data4";
+		function = "qspi0";
+	};
+};
+
+&rpc {
+	pinctrl-0 = <&qspi0_pins>;
+	pinctrl-names = "default";
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+	spi-max-frequency = <40000000>;
+	status = "okay";
+
+	spi-flash@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "s25fs512s", "jedec,spi-nor";
+		reg = <0>;
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <1>;
+		spi-max-frequency = <40000000>;
+	};
+};

arch/arm/mach-renesas/Kconfig.rcar4

@@ -54,6 +54,12 @@ config TARGET_SPIDER
 	help
 	  Support for Renesas R-Car Gen4 Spider platform
 
+config TARGET_S4SK
+	bool "S4SK board"
+	imply R8A779F0
+	help
+	  Support for Renesas R-Car Gen4 S4SK platform
+
 config TARGET_WHITEHAWK
 	bool "White Hawk board"
 	imply R8A779G0
@@ -70,6 +76,7 @@ endchoice
 
 source "board/renesas/falcon/Kconfig"
 source "board/renesas/spider/Kconfig"
+source "board/renesas/s4sk/Kconfig"
 source "board/renesas/whitehawk/Kconfig"
 source "board/renesas/grayhawk/Kconfig"
 

arch/arm/mach-renesas/include/mach/boot0.h

@@ -34,7 +34,7 @@ _start:
 	.inst	0xe380070a	/* orr     r0, r0, #0x280000 */
 
 	/* APMU_RVBARPLC0 = (address of 'b reset' below) | CA_CORE0_VLD_RVBARP */
-	.inst	0xe28f3088	/* add     r3, pc, #0x88 */
+	.inst	0xe28f30a8	/* add     r3, pc, #0xa8 */
 	.inst	0xe3833001	/* orr     r3, r3, #1 */
 	.inst	0xe5843038	/* str     r3, [r4, #56]   @ 0x38 */
 
@@ -75,12 +75,22 @@ _start:
 	.inst	0xe20230ff	/* and     r3, r2, #255    @ 0xff */
 	.inst	0xe3530011	/* cmp     r3, #17 */
 	.inst	0x1afffffb	/* bne     78 <reset-0x28> */
+	/* Invalidate icache before jump to follow up software */
+	.inst	0xe3a00000	/* mov     r0, #0 */
+	.inst	0xee070f15	/* mcr     15, 0, r0, cr7, cr5, {0} */
+	.inst	0xf57ff04f	/* dsb     sy */
+	.inst	0xf57ff06f	/* isb     sy */
+	/* Jump to follow up software */
 	.inst	0xe1a02922	/* lsr     r2, r2, #18 */
 	.inst	0xe1a02902	/* lsl     r2, r2, #18 */
 	.inst	0xe1a0f002	/* mov     pc, r2 */
 	.inst	0xeafffffe	/* b       94 <reset-0xc> */
 	.inst	0xe1a00000	/* nop                     @ (mov r0, r0) */
 	.inst	0xe1a00000	/* nop                     @ (mov r0, r0) */
+	.inst	0xe1a00000	/* nop                     @ (mov r0, r0) */
+	.inst	0xe1a00000	/* nop                     @ (mov r0, r0) */
+	.inst	0xe1a00000	/* nop                     @ (mov r0, r0) */
+	.inst	0xe1a00000	/* nop                     @ (mov r0, r0) */
 	/* Offset 0xa0 */
 #endif
 	b	reset

board/renesas/s4sk/Kconfig

@@ -0,0 +1,15 @@
+if TARGET_S4SK
+
+config SYS_SOC
+	default "renesas"
+
+config SYS_BOARD
+	default "s4sk"
+
+config SYS_VENDOR
+	default "renesas"
+
+config SYS_CONFIG_NAME
+	default "s4sk"
+
+endif

board/renesas/s4sk/MAINTAINERS

@@ -0,0 +1,7 @@
+S4SK BOARD
+M:	Marek Vasut <marek.vasut+renesas@mailbox.org>
+S:	Maintained
+F:	arch/arm/dts/r8a779f4*
+F:	board/renesas/s4sk/
+F:	configs/r8a779f4_s4sk_defconfig
+F:	include/configs/s4sk.h

board/renesas/s4sk/Makefile

@@ -0,0 +1,7 @@
+#
+# Copyright (C) 2025 Renesas Electronics Corp.
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+obj-y	:= s4sk.o

board/renesas/s4sk/s4sk.c

@@ -0,0 +1,85 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2025 Marek Vasut <marek.vasut+renesas@mailbox.org>
+ */
+
+#include <dm.h>
+#include <i2c.h>
+#include <malloc.h>
+#include <net-common.h>
+
+#define S4SK_FPGA_I2C_BUS			"i2c5"
+#define S4SK_FPGA_I2C_DEV_ADDR			0x70
+#define S4SK_FPGA_I2C_DEV_WIDTH			2
+#define S4SK_FPGA_I2C_MAC_COUNT			4
+#define S4SK_FPGA_I2C_MAC_OFFSET		0x58
+#define S4SK_FPGA_I2C_MAC_WIDTH			8
+
+int board_late_init(void)
+{
+	/*
+	 * Extract AVB and TSN0,1,2 MAC addresses from FPGA via I2C.
+	 *
+	 * In case a matching ethaddr/ethNaddr environment variable
+	 * is not set, set it, otherwise do not override it. This
+	 * allows users to set their own MAC addresses via ethaddr
+	 * and ethNaddr environment variables.
+	 *
+	 * The ethaddr/ethNaddr mapping follows Linux kernel DT aliases
+	 * ethernetN property assignment:
+	 * - ethaddr ..... TSN0 (IC104 connector)
+	 * - eth1addr .... TSN1 (IC101 connector)
+	 * - eth2addr .... TSN2 (Expansion connector)
+	 * - eth3addr .... AVB (CN1 connector)
+	 */
+	ofnode i2c_node = ofnode_path(S4SK_FPGA_I2C_BUS);
+	struct udevice *bus, *dev;
+	unsigned char enetaddr[6];
+	unsigned char macs[32];	/* Four MAC addresses in FPGA in total. */
+	int i, idx, j, ret;
+
+	ret = uclass_get_device_by_ofnode(UCLASS_I2C, i2c_node, &bus);
+	if (ret < 0) {
+		printf("s4sk: cannot find i2c bus (%d)\n", ret);
+		return 0;
+	}
+
+	ret = i2c_get_chip(bus, S4SK_FPGA_I2C_DEV_ADDR,
+			   S4SK_FPGA_I2C_DEV_WIDTH, &dev);
+	if (ret < 0) {
+		printf("s4sk: cannot find i2c chip (%d)\n", ret);
+		return 0;
+	}
+
+	ret = dm_i2c_read(dev, S4SK_FPGA_I2C_MAC_OFFSET, macs, sizeof(macs));
+	if (ret < 0) {
+		printf("s4sk: failed to read MAC addresses via i2c (%d)\n", ret);
+		return 0;
+	}
+
+	for (i = 0; i < S4SK_FPGA_I2C_MAC_COUNT; i++) {
+		/*
+		 * Remap TSN0,1,2 to ethaddr,eth1addr,eth2addr and
+		 * AVB to eth3addr to match Linux /aliases ethernetN
+		 * assignment, which starts with ethernet0 for TSN.
+		 */
+		idx = (i + 3) % 4;
+		ret = eth_env_get_enetaddr_by_index("eth", idx, enetaddr);
+		if (ret)	/* ethaddr is already set */
+			continue;
+
+		/* Byte-wise reverse the MAC address */
+		for (j = 0; j < sizeof(enetaddr); j++)
+			enetaddr[j] = macs[i * S4SK_FPGA_I2C_MAC_WIDTH + (5 - j)];
+
+		if (!is_valid_ethaddr(enetaddr)) {
+			printf("s4sk: MAC address %d in FPGA not valid (%pM)\n",
+			       i, enetaddr);
+			continue;
+		}
+
+		eth_env_set_enetaddr_by_index("eth", idx, enetaddr);
+	}
+
+	return 0;
+}

configs/r8a779f0_spider_defconfig

@@ -1,32 +1,11 @@
-#include <configs/renesas_rcar4.config>
+#include <configs/renesas_rcar4_s4.config>
 
 CONFIG_ARM=y
 CONFIG_ARCH_RENESAS=y
 CONFIG_RCAR_GEN4=y
-CONFIG_ENV_SIZE=0x40000
-CONFIG_ENV_OFFSET=0xD00000
-CONFIG_ENV_SECT_SIZE=0x40000
-CONFIG_DEFAULT_DEVICE_TREE="renesas/r8a779f0-spider"
 CONFIG_TARGET_SPIDER=y
-CONFIG_SYS_CLK_FREQ=20000000
+CONFIG_DEFAULT_DEVICE_TREE="renesas/r8a779f0-spider"
-CONFIG_SYS_BOOT_GET_CMDLINE=y
-CONFIG_SYS_BARGSIZE=2048
 CONFIG_BOOTCOMMAND="tftp 0x48080000 Image && tftp 0x48000000 Image-r8a779f0-spider.dtb && booti 0x48080000 - 0x48000000"
 CONFIG_DEFAULT_FDT_FILE="r8a779f0-spider.dtb"
-CONFIG_SYS_CBSIZE=2048
-CONFIG_CMD_PART=y
-CONFIG_CMD_UFS=y
-CONFIG_ENV_IS_IN_SPI_FLASH=y
-CONFIG_LBA48=y
-CONFIG_SYS_64BIT_LBA=y
-CONFIG_CLK_GPIO=y
-CONFIG_DM_PCA953X=y
-CONFIG_PHYLIB_10G=y
-CONFIG_PHY_MARVELL_10G=y
-CONFIG_RENESAS_ETHER_SWITCH=y
-CONFIG_PHY_R8A779F0_ETHERNET_SERDES=y
-CONFIG_SCSI=y
 CONFIG_BAUDRATE=1843200
-CONFIG_UFS=y
+CONFIG_DM_PCA953X=y
-CONFIG_UFS_RENESAS=y
-CONFIG_FS_FAT_MAX_CLUSTSIZE=131072

configs/r8a779f4_s4sk_defconfig

@@ -0,0 +1,11 @@
+#include <configs/renesas_rcar4_s4.config>
+
+CONFIG_ARM=y
+CONFIG_ARCH_RENESAS=y
+CONFIG_RCAR_GEN4=y
+CONFIG_TARGET_S4SK=y
+CONFIG_DEFAULT_DEVICE_TREE="renesas/r8a779f4-s4sk"
+CONFIG_BOOTCOMMAND="tftp 0x48080000 Image && tftp 0x48000000 Image-r8a779f4-s4sk.dtb && booti 0x48080000 - 0x48000000"
+CONFIG_DEFAULT_FDT_FILE="r8a779f4-s4sk.dtb"
+CONFIG_BAUDRATE=921600
+CONFIG_BOARD_LATE_INIT=y

configs/renesas_rcar4_s4.config

@@ -0,0 +1,23 @@
+#include <configs/renesas_rcar4.config>
+
+CONFIG_CLK_GPIO=y
+CONFIG_CMD_PART=y
+CONFIG_CMD_UFS=y
+CONFIG_ENV_IS_IN_SPI_FLASH=y
+CONFIG_ENV_OFFSET=0xD00000
+CONFIG_ENV_SECT_SIZE=0x40000
+CONFIG_ENV_SIZE=0x40000
+CONFIG_FS_FAT_MAX_CLUSTSIZE=131072
+CONFIG_LBA48=y
+CONFIG_PHYLIB_10G=y
+CONFIG_PHY_MARVELL_10G=y
+CONFIG_PHY_R8A779F0_ETHERNET_SERDES=y
+CONFIG_RENESAS_ETHER_SWITCH=y
+CONFIG_SCSI=y
+CONFIG_SYS_64BIT_LBA=y
+CONFIG_SYS_BARGSIZE=2048
+CONFIG_SYS_BOOT_GET_CMDLINE=y
+CONFIG_SYS_CBSIZE=2048
+CONFIG_SYS_CLK_FREQ=20000000
+CONFIG_UFS=y
+CONFIG_UFS_RENESAS=y

doc/board/renesas/renesas.rst

@@ -168,6 +168,12 @@ Renesas is a SoC solutions provider for automotive and industrial applications.
      - arm64
      - r8a779f0_spider_defconfig
 
+   * -
+     - S4SK
+     - R8A779F4 (S4)
+     - arm64
+     - r8a779f4_s4sk_defconfig
+
    * -
      - White Hawk
      - R8A779G0 (V4H)

drivers/net/phy/miiphybb.c

@@ -183,9 +183,7 @@ int bb_miiphy_read(struct mii_dev *miidev, int addr, int devad, int reg)
 	bus->set_mdc(bus, 1);
 	bus->delay(bus);
 
-#ifdef DEBUG
+	debug("%s[%s](0x%x) @ 0x%x = 0x%04x\n", __func__, miidev->name, reg, addr, rdreg);
-	printf("miiphy_read(0x%x) @ 0x%x = 0x%04x\n", reg, addr, rdreg);
-#endif
 
 	return rdreg;
 }

drivers/remoteproc/renesas_apmu.c

@@ -68,6 +68,13 @@ static int renesas_apmu_rproc_load(struct udevice *dev, ulong addr, ulong size)
 	flush_dcache_range(trampolineaddr,
 			   trampolineaddr +
 			   sizeof(renesas_apmu_rproc_trampoline));
+	invalidate_dcache_range(trampolineaddr,
+				trampolineaddr +
+				sizeof(renesas_apmu_rproc_trampoline));
+	flush_dcache_range(addr, addr + size);
+	invalidate_dcache_range(addr, addr + size);
+	asm volatile("dsb sy\n");
+	asm volatile("isb sy\n");
 
 	/* CR52 boot address set */
 	writel(trampolineaddr | APMU_CRBARP_CR_VLD_BARP,

include/configs/s4sk.h

@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * This file is S4SK board configuration.
+ *
+ * Copyright (C) 2024-2025 Renesas Electronics Corp.
+ */
+
+#ifndef __S4SK_H
+#define __S4SK_H
+
+#include "rcar-gen4-common.h"
+
+#endif /* __S4SK_H */