starfive: Add JH7100 support

This patch adds StarFive JH7100 main support, including Starlight and EVB
support, ported from StarFive HiFive_U-Boot REPO.

    The original authors are
    bo.li <bo.li@starfivetech.com>
    Chenjieqin <Jessica.Chen@starfivetech.com>
    Huan.Feng <huan.feng@starfivetech.com>
    jack.zhu <jack.zhu@starfivetech.com>
    Jianlong Huang <jianlong.huang@starfivetech.com>
    ke.zhu <ke.zhu@starfivetech.com>
    Micheal Zhu <michael.zhu@starfivetech.com>
    Samin Guo <samin.guo@starfivetech.com>
    yanhong.wang <yanhong.wang@starfivetech.com>
    yiming.li <yiming.li@starfivetech.com>

Note:
    1, disable BTRFS(will trigger a link error with *some* RV64 GCC)
    But RV64 GCC on Fedora works well with enabling BTRFS.

    BTRFS will select ZSTD which will trigger a link error with
    *some* RV64 GCC:
    ---
    riscv64-unknown-linux-gnu-ld.bfd: /usr/lib/gcc/riscv64-unknown-linux-gnu/11.2.0/libgcc.a(_clzsi2.o): can't link double-float modules with soft-float modules
    riscv64-unknown-linux-gnu-ld.bfd: failed to merge target specific data of file /usr/lib/gcc/riscv64-unknown-linux-gnu/11.2.0/libgcc.a(_clzsi2.o)
    riscv64-unknown-linux-gnu-ld.bfd: /usr/lib/gcc/riscv64-unknown-linux-gnu/11.2.0/libgcc.a(_clz.o): can't link double-float modules with soft-float modules
    riscv64-unknown-linux-gnu-ld.bfd: failed to merge target specific data of file /usr/lib/gcc/riscv64-unknown-linux-gnu/11.2.0/libgcc.a(_clz.o)
    make: *** [Makefile:1787: u-boot] Error 1
    ---

    2, enable OF_SEPARATE:
    This is required so that openSBI can add itself to /reserved-memory, and
    let EFI know about it.

    By Andreas Schwab <schwab@suse.de>

    3, Set default fdtfile name

    By Andreas Schwab <schwab@suse.de>

1 files changed, 99 insertions, 0 deletions

diff --git a/include/configs/starfive-jh7100.h b/include/configs/starfive-jh7100.h
new file mode 100644
index 0000000000..590e7b6db4
--- /dev/null
+++ b/include/configs/starfive-jh7100.h
@@ -0,0 +1,99 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2021 Shanghai StarFive Technology Co., Ltd.
+ * TekkamanV <tekkamanv@starfivetech.com>
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#include <version.h>
+#include <linux/sizes.h>
+
+#define CONFIG_SYS_CACHELINE_SIZE	64
+
+/*
+ * Miscellaneous configurable options
+ */
+#define CONFIG_SYS_CBSIZE		1024	/* Console I/O Buffer Size */
+#define CONFIG_SYS_BOOTM_LEN		(64 << 20) /* 64MB */
+
+/*
+ * Print Buffer Size
+ */
+#define CONFIG_SYS_PBSIZE	\
+			(CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
+/*
+ * Boot Argument Buffer Size
+ */
+#define CONFIG_SYS_BARGSIZE		CONFIG_SYS_CBSIZE
+
+/*
+ * max number of command args
+ */
+#define CONFIG_SYS_MAXARGS		16
+
+#define CONFIG_SYS_SDRAM_BASE		0x80000000
+/* Init Stack Pointer */
+#define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_SDRAM_BASE + SZ_2M)
+#define CONFIG_SYS_LOAD_ADDR		(CONFIG_SYS_SDRAM_BASE + SZ_2M)
+#define CONFIG_STANDALONE_LOAD_ADDR	(CONFIG_SYS_SDRAM_BASE + SZ_2M)
+
+/*mac addr offset in otp*/
+#define STARFIVE_OTP_MAC_OFFSET		0x28
+
+/*
+ * Ethernet
+ */
+#if CONFIG_IS_ENABLED(CMD_NET)
+#define CONFIG_DW_ALTDESCRIPTOR
+#define CONFIG_ARP_TIMEOUT		0x5000
+#endif
+
+/* HACK these should have '#if defined (stuff) around them like zynqp*/
+#define BOOT_TARGET_DEVICES(func)	func(DHCP, dhcp, na) \
+					func(MMC, mmc, 0)
+
+#include <config_distro_bootcmd.h>
+
+#include <environment/distro/sf.h>
+
+#define STARLIGHT_FEDORA_BOOTENV \
+	"bootdir=/boot\0" \
+	"bootenv=uEnv.txt\0" \
+	"mmcdev=0\0" \
+	"mmcpart=3\0"
+
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	STARLIGHT_FEDORA_BOOTENV \
+	"loadaddr=0xa0000000\0" \
+	"loadbootenv=fatload mmc ${mmcdev} ${loadaddr} ${bootenv}\0" \
+	"ext4bootenv=ext4load mmc ${bootpart} ${loadaddr} ${bootdir}/${bootenv}\0" \
+	"importbootenv=echo Importing environment from mmc${mmcdev} ...; " \
+		"env import -t ${loadaddr} ${filesize}\0" \
+	"mmcbootenv=setenv bootpart ${mmcdev}:${mmcpart}; " \
+		"mmc dev ${mmcdev}; " \
+		"if mmc rescan; then " \
+			"run loadbootenv && run importbootenv; " \
+			"run ext4bootenv && run importbootenv; " \
+			"if test -n $uenvcmd; then " \
+				"echo Running uenvcmd ...; " \
+				"run uenvcmd; " \
+			"fi; " \
+		"fi\0" \
+	"fdtfile=" CONFIG_DEFAULT_FDT_FILE "\0" \
+	BOOTENV \
+	BOOTENV_SF
+
+#define CONFIG_SYS_MAX_FLASH_SECT	0
+#define CONFIG_SYS_MAX_FLASH_BANKS	0
+#define __io
+
+/*
+ * QSPI support
+ */
+#ifdef CONFIG_OF_CONTROL		/* QSPI is controlled via DT */
+#define CONFIG_CQSPI_REF_CLK		(250000000)
+#endif
+
+#endif /* __CONFIG_H */