riscv: Add Microchip MPFS Icicle board support

This patch adds Microchip MPFS Icicle board support.
For now, NS16550 serial driver is only enabled.
The Microchip MPFS Icicle defconfig by default builds
U-Boot for M-Mode with SMP support.

Signed-off-by: Padmarao Begari <padmarao.begari@microchip.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 0d04d91ad49517f10962180105a0009ccfe41d4a..8cfc7d0faaac1a98a00ac9e1b364f4016a05afaf 100644 (file)
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -11,6 +11,9 @@ choice
 config TARGET_AX25_AE350
        bool "Support ax25-ae350"
 
+config TARGET_MICROCHIP_ICICLE
+       bool "Support Microchip PolarFire-SoC Icicle Board"
+
 config TARGET_QEMU_VIRT
        bool "Support QEMU Virt Board"
 
@@ -48,6 +51,7 @@ config SPL_SYS_DCACHE_OFF
 # board-specific options below
 source "board/AndesTech/ax25-ae350/Kconfig"
 source "board/emulation/qemu-riscv/Kconfig"
+source "board/microchip/mpfs_icicle/Kconfig"
 source "board/sifive/fu540/Kconfig"
 
 # platform-specific options below

diff --git a/board/microchip/mpfs_icicle/Kconfig b/board/microchip/mpfs_icicle/Kconfig
new file mode 100644 (file)
index 0000000..bf8e1a1
--- /dev/null
+++ b/board/microchip/mpfs_icicle/Kconfig
@@ -0,0 +1,26 @@
+if TARGET_MICROCHIP_ICICLE
+
+config SYS_BOARD
+       default "mpfs_icicle"
+
+config SYS_VENDOR
+       default "microchip"
+
+config SYS_CPU
+       default "generic"
+
+config SYS_CONFIG_NAME
+       default "microchip_mpfs_icicle"
+
+config SYS_TEXT_BASE
+       default 0x80000000 if !RISCV_SMODE
+       default 0x80200000 if RISCV_SMODE
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+       def_bool y
+       select GENERIC_RISCV
+       select BOARD_EARLY_INIT_F
+       imply SMP
+       imply SYS_NS16550
+
+endif

diff --git a/board/microchip/mpfs_icicle/MAINTAINERS b/board/microchip/mpfs_icicle/MAINTAINERS
new file mode 100644 (file)
index 0000000..22f3b97
--- /dev/null
+++ b/board/microchip/mpfs_icicle/MAINTAINERS
@@ -0,0 +1,7 @@
+Microchip MPFS icicle
+M:     Padmarao Begari <padmarao.begari@microchip.com>
+M:     Cyril Jean <cyril.jean@microchip.com>
+S:     Maintained
+F:     board/microchip/mpfs_icicle/
+F:     include/configs/microchip_mpfs_icicle.h
+F:     configs/microchip_mpfs_icicle_defconfig

diff --git a/board/microchip/mpfs_icicle/Makefile b/board/microchip/mpfs_icicle/Makefile
new file mode 100644 (file)
index 0000000..72b0410
--- /dev/null
+++ b/board/microchip/mpfs_icicle/Makefile
@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (C) 2019 Microchip Technology Inc.
+# Padmarao Begari <padmarao.begari@microchip.com>
+#
+
+obj-y  += mpfs_icicle.o

diff --git a/board/microchip/mpfs_icicle/mpfs_icicle.c b/board/microchip/mpfs_icicle/mpfs_icicle.c
new file mode 100644 (file)
index 0000000..0ef2431
--- /dev/null
+++ b/board/microchip/mpfs_icicle/mpfs_icicle.c
@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 Microchip Technology Inc.
+ * Padmarao Begari <padmarao.begari@microchip.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <asm/io.h>
+
+#define MPFS_SYSREG_SOFT_RESET ((unsigned int *)0x20002088)
+
+int board_init(void)
+{
+       /* For now nothing to do here. */
+
+       return 0;
+}
+
+int board_early_init_f(void)
+{
+       unsigned int val;
+
+       /* Reset uart peripheral */
+       val = readl(MPFS_SYSREG_SOFT_RESET);
+       val = (val & ~(1u << 5u));
+       writel(val, MPFS_SYSREG_SOFT_RESET);
+
+       return 0;
+}

diff --git a/configs/microchip_mpfs_icicle_defconfig b/configs/microchip_mpfs_icicle_defconfig
new file mode 100644 (file)
index 0000000..a375546
--- /dev/null
+++ b/configs/microchip_mpfs_icicle_defconfig
@@ -0,0 +1,8 @@
+CONFIG_RISCV=y
+CONFIG_ARCH_RV64I=y
+CONFIG_NR_CPUS=5
+CONFIG_TARGET_MICROCHIP_ICICLE=y
+CONFIG_BOOTDELAY=3
+CONFIG_SYS_PROMPT="RISC-V # "
+CONFIG_FIT=y
+CONFIG_OF_PRIOR_STAGE=y

diff --git a/include/configs/microchip_mpfs_icicle.h b/include/configs/microchip_mpfs_icicle.h
new file mode 100644 (file)
index 0000000..82c7fbb
--- /dev/null
+++ b/include/configs/microchip_mpfs_icicle.h
@@ -0,0 +1,63 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2019 Microchip Technology Inc.
+ * Padmarao Begari <padmarao.begari@microchip.com>
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+/*
+ * CPU and Board Configuration Options
+ */
+#define CONFIG_BOOTP_SEND_HOSTNAME
+
+/*
+ * Miscellaneous configurable options
+ */
+#define CONFIG_SYS_CBSIZE      1024 /* Console I/O Buffer Size */
+
+/*
+ * Print Buffer Size
+ */
+#define CONFIG_SYS_PBSIZE      \
+       (CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
+
+/*
+ * max number of command args
+ */
+#define CONFIG_SYS_MAXARGS     16
+
+/*
+ * Boot Argument Buffer Size
+ */
+#define CONFIG_SYS_BARGSIZE    CONFIG_SYS_CBSIZE
+
+/*
+ * Size of malloc() pool
+ * 512kB is suggested, (CONFIG_ENV_SIZE + 128 * 1024) was not enough
+ */
+#define CONFIG_SYS_MALLOC_LEN  (512 << 10)
+
+/*
+ * Physical Memory Map
+ */
+#define PHYS_SDRAM_0           0x80000000 /* SDRAM Bank #1 */
+#define PHYS_SDRAM_0_SIZE      0x40000000 /* 1 GB */
+#define CONFIG_SYS_SDRAM_BASE  PHYS_SDRAM_0
+
+/* Init Stack Pointer */
+#define CONFIG_SYS_INIT_SP_ADDR        (CONFIG_SYS_SDRAM_BASE + 0x200000)
+
+#define CONFIG_SYS_LOAD_ADDR   0x80000000 /* SDRAM */
+
+/*
+ * memtest works on DRAM
+ */
+#define CONFIG_SYS_MEMTEST_START       PHYS_SDRAM_0
+#define CONFIG_SYS_MEMTEST_END         (PHYS_SDRAM_0 + PHYS_SDRAM_0_SIZE)
+
+/* When we use RAM as ENV */
+#define CONFIG_ENV_SIZE        0x2000
+
+#endif /* __CONFIG_H */