[PATCH] riscv: Add support for AMD/Xilinx MicroBlaze V
Michal Simek
michal.simek at amd.com
Fri Nov 3 17:03:25 CET 2023
MicroBlaze V is new AMD/Xilinx soft-core 32bit RISC-V processor IP.
It is hardware compatible with classic MicroBlaze processor.
The patch contains initial wiring and configuration for initial HW design
with memory, cpu, interrupt controller, timers and uartlite console.
Provided DT is just describing one configuration and should be taken only
as example.
Signed-off-by: Michal Simek <michal.simek at amd.com>
---
Public annoucement is available here if someone is interested.
https://www.xilinx.com/products/design-tools/microblaze-v.html?utm_source=marketo&utm_medium=email&utm_campaign=EN-EM-2023-11-02-New-MicroBlaze-V-Processor&utm_term=btn&mkt_tok=NDA5LVdZWC03MjQAAAGPMMJYuPPscCags7WdvOeUSWy-_mC9aOwrobFaZRf5ok_eHoQUvTLBzJdHrkcBId9tQ4a-odfnU91WjUkIxx-iSG4OKGofjK5iZcAiK_VN8_xK
---
arch/riscv/Kconfig | 4 ++
arch/riscv/dts/Makefile | 2 +
arch/riscv/dts/xilinx-mbv32.dts | 86 ++++++++++++++++++++++++++++
board/xilinx/Kconfig | 3 +-
board/xilinx/common/board.c | 5 ++
board/xilinx/mbv/Kconfig | 28 +++++++++
board/xilinx/mbv/MAINTAINERS | 7 +++
board/xilinx/mbv/Makefile | 5 ++
board/xilinx/mbv/board.c | 11 ++++
configs/xilinx_mbv32_defconfig | 30 ++++++++++
configs/xilinx_mbv32_smode_defconfig | 32 +++++++++++
include/configs/xilinx_mbv.h | 6 ++
12 files changed, 218 insertions(+), 1 deletion(-)
create mode 100644 arch/riscv/dts/xilinx-mbv32.dts
create mode 100644 board/xilinx/mbv/Kconfig
create mode 100644 board/xilinx/mbv/MAINTAINERS
create mode 100644 board/xilinx/mbv/Makefile
create mode 100644 board/xilinx/mbv/board.c
create mode 100644 configs/xilinx_mbv32_defconfig
create mode 100644 configs/xilinx_mbv32_smode_defconfig
create mode 100644 include/configs/xilinx_mbv.h
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 8fc81fb284cd..40113d7803b2 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -39,6 +39,9 @@ config TARGET_SIPEED_MAIX
config TARGET_OPENPITON_RISCV64
bool "Support RISC-V cores on OpenPiton SoC"
+config TARGET_XILINX_MBV
+ bool "Support AMD/Xilinx MicroBlaze V"
+
endchoice
config SYS_ICACHE_OFF
@@ -82,6 +85,7 @@ source "board/thead/th1520_lpi4a/Kconfig"
source "board/openpiton/riscv64/Kconfig"
source "board/sipeed/maix/Kconfig"
source "board/starfive/visionfive2/Kconfig"
+source "board/xilinx/mbv/Kconfig"
# platform-specific options below
source "arch/riscv/cpu/andesv5/Kconfig"
diff --git a/arch/riscv/dts/Makefile b/arch/riscv/dts/Makefile
index be6c8a422729..b05bb5607f06 100644
--- a/arch/riscv/dts/Makefile
+++ b/arch/riscv/dts/Makefile
@@ -9,6 +9,8 @@ dtb-$(CONFIG_TARGET_SIFIVE_UNMATCHED) += hifive-unmatched-a00.dtb
dtb-$(CONFIG_TARGET_SIPEED_MAIX) += k210-maix-bit.dtb
dtb-$(CONFIG_TARGET_STARFIVE_VISIONFIVE2) += jh7110-starfive-visionfive-2.dtb
dtb-$(CONFIG_TARGET_TH1520_LPI4A) += th1520-lichee-pi-4a.dtb
+dtb-$(CONFIG_TARGET_XILINX_MBV) += xilinx-mbv32.dtb
+
include $(srctree)/scripts/Makefile.dts
targets += $(dtb-y)
diff --git a/arch/riscv/dts/xilinx-mbv32.dts b/arch/riscv/dts/xilinx-mbv32.dts
new file mode 100644
index 000000000000..9046aa0e52eb
--- /dev/null
+++ b/arch/riscv/dts/xilinx-mbv32.dts
@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * dts file for Xilinx MicroBlaze V
+ *
+ * (C) Copyright 2023, Advanced Micro Devices, Inc.
+ *
+ * Michal Simek <michal.simek at amd.com>
+ */
+
+/dts-v1/;
+/ {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ model = "Xilinx MicroBlaze V 32bit";
+ compatible = "xlnx,mbv32";
+
+ cpus: cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ timebase-frequency = <102000000>;
+ cpu_0: cpu at 0 {
+ device_type = "cpu";
+ compatible = "riscv";
+ reg = <0>;
+ status = "okay";
+ riscv,isa = "rv32imafdc";
+ clock-frequency = <100000000>;
+ i-cache-size = <32768>;
+ d-cache-size = <32768>;
+ };
+ };
+
+ aliases {
+ serial0 = &uart0;
+ };
+
+ chosen {
+ bootargs = "earlycon";
+ stdout-path = "serial0:115200n8";
+ };
+
+ memory at 20000000 {
+ device_type = "memory";
+ reg = <0x20000000 0x20000000>;
+ };
+
+ axi: axi {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "simple-bus";
+ ranges;
+ bootph-all;
+
+ axi_intc: interrupt-controller at 41200000 {
+ compatible = "xlnx.xps-intc";
+ reg = <0x41200000 0x1000>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ kind-of-intr = <0>;
+ };
+
+ xlnx_timer0: timer at 41c00000 {
+ compatible = "xlnx,xps-timer-1.00.a";
+ reg = <0x41c00000 0x1000>;
+ interrupt-parent = <&axi_intc>;
+ interrupts = <1 2>;
+ clock-frequency = <102000000>;
+ bootph-all;
+ };
+
+ xlnx_timer1: timer at 41c20000 {
+ compatible = "xlnx,xps-timer-1.00.a";
+ reg = <0x41c20000 0x1000>;
+ interrupt-parent = <&axi_intc>;
+ interrupts = <0 2>;
+ clock-frequency = <102000000>;
+ };
+
+ uart0: serial at 40600000 {
+ compatible = "xlnx,xps-uartlite-1.00.a";
+ reg = <0x40600000 0x1000>;
+ interrupt-parent = <&axi_intc>;
+ bootph-all;
+ };
+ };
+};
diff --git a/board/xilinx/Kconfig b/board/xilinx/Kconfig
index 4f0776e8bd95..843198fa0da8 100644
--- a/board/xilinx/Kconfig
+++ b/board/xilinx/Kconfig
@@ -51,10 +51,11 @@ config XILINX_OF_BOARD_DTB_ADDR
config BOOT_SCRIPT_OFFSET
hex "Boot script offset"
- depends on ARCH_ZYNQ || ARCH_ZYNQMP || ARCH_VERSAL || ARCH_VERSAL_NET || MICROBLAZE
+ depends on ARCH_ZYNQ || ARCH_ZYNQMP || ARCH_VERSAL || ARCH_VERSAL_NET || MICROBLAZE || TARGET_XILINX_MBV
default 0xFC0000 if ARCH_ZYNQ || MICROBLAZE
default 0x3E80000 if ARCH_ZYNQMP
default 0x7F80000 if ARCH_VERSAL || ARCH_VERSAL_NET
+ default 0 if TARGET_XILINX_MBV
help
Specifies distro boot script offset in NAND/QSPI/NOR flash.
diff --git a/board/xilinx/common/board.c b/board/xilinx/common/board.c
index 9309b071269f..12a877c71549 100644
--- a/board/xilinx/common/board.c
+++ b/board/xilinx/common/board.c
@@ -652,6 +652,11 @@ int embedded_dtb_select(void)
#endif
#if defined(CONFIG_LMB)
+
+#ifndef MMU_SECTION_SIZE
+#define MMU_SECTION_SIZE (1 * 1024 * 1024)
+#endif
+
phys_addr_t board_get_usable_ram_top(phys_size_t total_size)
{
phys_size_t size;
diff --git a/board/xilinx/mbv/Kconfig b/board/xilinx/mbv/Kconfig
new file mode 100644
index 000000000000..4bc9f72c541b
--- /dev/null
+++ b/board/xilinx/mbv/Kconfig
@@ -0,0 +1,28 @@
+if TARGET_XILINX_MBV
+
+config SYS_BOARD
+ default "mbv"
+
+config SYS_VENDOR
+ default "xilinx"
+
+config SYS_CPU
+ default "generic"
+
+config SYS_CONFIG_NAME
+ default "xilinx_mbv"
+
+config TEXT_BASE
+ default 0x80000000 if !RISCV_SMODE
+ default 0x80400000 if RISCV_SMODE && ARCH_RV32I
+
+config BOARD_SPECIFIC_OPTIONS
+ def_bool y
+ select GENERIC_RISCV
+ imply BOARD_LATE_INIT
+ imply CMD_SBI
+ imply CMD_PING
+
+source "board/xilinx/Kconfig"
+
+endif
diff --git a/board/xilinx/mbv/MAINTAINERS b/board/xilinx/mbv/MAINTAINERS
new file mode 100644
index 000000000000..445654fe740e
--- /dev/null
+++ b/board/xilinx/mbv/MAINTAINERS
@@ -0,0 +1,7 @@
+XILINX MicroBlaze V BOARD
+M: Michal Simek <michal.simek at amd.com>
+S: Maintained
+F: arch/riscv/dts/xilinx-mbv*
+F: board/xilinx/mbv/
+F: configs/xilinx_mbv*
+F: include/configs/xilinx_mbv.h
diff --git a/board/xilinx/mbv/Makefile b/board/xilinx/mbv/Makefile
new file mode 100644
index 000000000000..e2fc0c69715f
--- /dev/null
+++ b/board/xilinx/mbv/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# (C) Copyright 2023, Advanced Micro Devices, Inc.
+
+obj-y += board.o
diff --git a/board/xilinx/mbv/board.c b/board/xilinx/mbv/board.c
new file mode 100644
index 000000000000..ccf4395d6ace
--- /dev/null
+++ b/board/xilinx/mbv/board.c
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2023, Advanced Micro Devices, Inc.
+ *
+ * Michal Simek <michal.simek at amd.com>
+ */
+
+int board_init(void)
+{
+ return 0;
+}
diff --git a/configs/xilinx_mbv32_defconfig b/configs/xilinx_mbv32_defconfig
new file mode 100644
index 000000000000..2689495057b0
--- /dev/null
+++ b/configs/xilinx_mbv32_defconfig
@@ -0,0 +1,30 @@
+CONFIG_RISCV=y
+CONFIG_TEXT_BASE=0x21200000
+CONFIG_SYS_MALLOC_LEN=0x800000
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
+CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x20200000
+CONFIG_ENV_SIZE=0x20000
+CONFIG_DEFAULT_DEVICE_TREE="xilinx-mbv32"
+CONFIG_DEBUG_UART_BASE=0x40600000
+CONFIG_DEBUG_UART_CLOCK=1000000
+CONFIG_SYS_CLK_FREQ=100000000
+CONFIG_BOOT_SCRIPT_OFFSET=0x0
+CONFIG_SYS_LOAD_ADDR=0x80200000
+CONFIG_DEBUG_UART=y
+CONFIG_TARGET_XILINX_MBV=y
+CONFIG_FIT=y
+CONFIG_DISTRO_DEFAULTS=y
+CONFIG_DISPLAY_CPUINFO=y
+CONFIG_DISPLAY_BOARDINFO=y
+# CONFIG_BOARD_LATE_INIT is not set
+# CONFIG_CMD_MII is not set
+CONFIG_CMD_TIMER=y
+CONFIG_OF_EMBED=y
+CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+CONFIG_DM_MTD=y
+CONFIG_DEBUG_UART_ANNOUNCE=y
+CONFIG_DEBUG_UART_SKIP_INIT=y
+CONFIG_XILINX_UARTLITE=y
+CONFIG_XILINX_TIMER=y
+CONFIG_PANIC_HANG=y
diff --git a/configs/xilinx_mbv32_smode_defconfig b/configs/xilinx_mbv32_smode_defconfig
new file mode 100644
index 000000000000..c724d1bad742
--- /dev/null
+++ b/configs/xilinx_mbv32_smode_defconfig
@@ -0,0 +1,32 @@
+CONFIG_RISCV=y
+CONFIG_TEXT_BASE=0x21200000
+CONFIG_SYS_MALLOC_LEN=0x800000
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
+CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x20200000
+CONFIG_ENV_SIZE=0x20000
+CONFIG_DEFAULT_DEVICE_TREE="xilinx-mbv32"
+CONFIG_DEBUG_UART_BASE=0x40600000
+CONFIG_DEBUG_UART_CLOCK=1000000
+CONFIG_SYS_CLK_FREQ=100000000
+CONFIG_BOOT_SCRIPT_OFFSET=0x0
+CONFIG_SYS_LOAD_ADDR=0x80200000
+CONFIG_TARGET_XILINX_MBV=y
+CONFIG_RISCV_SMODE=y
+CONFIG_FIT=y
+CONFIG_DISTRO_DEFAULTS=y
+CONFIG_DISPLAY_CPUINFO=y
+CONFIG_DISPLAY_BOARDINFO=y
+# CONFIG_BOARD_LATE_INIT is not set
+# CONFIG_CMD_MII is not set
+CONFIG_CMD_TIMER=y
+CONFIG_OF_EMBED=y
+CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+CONFIG_DM_MTD=y
+CONFIG_DEBUG_UART_UARTLITE=y
+CONFIG_DEBUG_UART_ANNOUNCE=y
+CONFIG_DEBUG_UART_SKIP_INIT=y
+CONFIG_XILINX_UARTLITE=y
+# CONFIG_RISCV_TIMER is not set
+CONFIG_XILINX_TIMER=y
+CONFIG_PANIC_HANG=y
diff --git a/include/configs/xilinx_mbv.h b/include/configs/xilinx_mbv.h
new file mode 100644
index 000000000000..dba398aeec49
--- /dev/null
+++ b/include/configs/xilinx_mbv.h
@@ -0,0 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * (C) Copyright 2023, Advanced Micro Devices, Inc.
+ *
+ * Michal Simek <michal.simek at amd.com>
+ */
--
2.36.1
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