[PATCH v3 09/12] board: emulation: New board qemu-xtensa
Jiaxun Yang
jiaxun.yang at flygoat.com
Tue Jun 18 15:56:09 CEST 2024
Introduce the new board, define every bits.
Tested-by: Max Filippov <jcmvbkbc at gmail.com>
Signed-off-by: Jiaxun Yang <jiaxun.yang at flygoat.com>
---
v2:
- Fix maintainers entries
- Refine address mapping for noMMU machine
- Add a dtsi overlay to describe different memory size for noMMU system
v3:
- Use dc233c as default CPU
---
arch/xtensa/Kconfig | 5 +++
arch/xtensa/dts/virt-u-boot.dtsi | 17 +++++++++
board/emulation/qemu-xtensa/Kconfig | 43 ++++++++++++++++++++++
board/emulation/qemu-xtensa/MAINTAINERS | 8 +++++
board/emulation/qemu-xtensa/Makefile | 5 +++
board/emulation/qemu-xtensa/qemu-xtensa.c | 60 +++++++++++++++++++++++++++++++
configs/qemu-xtensa-dc233c_defconfig | 32 +++++++++++++++++
include/configs/qemu-xtensa.h | 36 +++++++++++++++++++
8 files changed, 206 insertions(+)
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 4afd56bca095..70eebb4bd22f 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -15,6 +15,10 @@ config TARGET_XTFPGA
bool "Support XTFPGA"
select BOARD_POSTCLK_INIT
+config TARGET_QEMU_XTENSA
+ bool "Support QEMU Xtensa Virt Board"
+ select BOARD_LATE_INIT
+
endchoice
config SYS_ICACHE_OFF
@@ -69,5 +73,6 @@ config XTENSA_SIMCALL_GDBIO
endchoice
source "board/cadence/xtfpga/Kconfig"
+source "board/emulation/qemu-xtensa/Kconfig"
endmenu
diff --git a/arch/xtensa/dts/virt-u-boot.dtsi b/arch/xtensa/dts/virt-u-boot.dtsi
new file mode 100644
index 000000000000..22b4683e7617
--- /dev/null
+++ b/arch/xtensa/dts/virt-u-boot.dtsi
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2024 Jiaxun Yang <jiaxun.yang at flygoat.com>
+ */
+
+#include <config.h>
+
+/ {
+ memory at 0 {
+ device_type = "memory";
+#if XCHAL_HAVE_PTP_MMU
+ reg = <0x00000000 CFG_SYS_SDRAM_SIZE>;
+#else
+ reg = <CFG_SYS_MEMORY_BASE CFG_SYS_SDRAM_SIZE>;
+#endif
+ };
+};
diff --git a/board/emulation/qemu-xtensa/Kconfig b/board/emulation/qemu-xtensa/Kconfig
new file mode 100644
index 000000000000..8767b6fabbdb
--- /dev/null
+++ b/board/emulation/qemu-xtensa/Kconfig
@@ -0,0 +1,43 @@
+if TARGET_QEMU_XTENSA
+
+config SYS_BOARD
+ default "qemu-xtensa"
+
+config SYS_VENDOR
+ default "emulation"
+
+config SYS_CONFIG_NAME
+ default "qemu-xtensa"
+
+config TEXT_BASE
+ default 0x50000000 if (SYS_CPU = de212)
+ default 0xfe000000
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+ def_bool y
+ select BOARD_EARLY_INIT_F
+ select DM
+ select CPU
+ select CPU_XTENSA
+ select CLK
+ select DM_SERIAL
+ select XTENSA_SEMIHOSTING
+ select XTENSA_SEMIHOSTING_SERIAL
+ imply BLK
+ imply VIRTIO
+ imply VIRTIO_PCI
+ imply VIRTIO_NET
+ imply VIRTIO_BLK
+ imply E1000
+ imply PCI
+ imply PCI_INIT_R
+ imply NVME_PCI
+ imply PCIE_ECAM_GENERIC
+ imply SCSI
+ imply REMAKE_ELF
+ select OF_CONTROL
+ select OF_UPSTREAM
+ imply CMD_DM
+ imply CMD_PCI
+
+endif
diff --git a/board/emulation/qemu-xtensa/MAINTAINERS b/board/emulation/qemu-xtensa/MAINTAINERS
new file mode 100644
index 000000000000..6ffdfe85deeb
--- /dev/null
+++ b/board/emulation/qemu-xtensa/MAINTAINERS
@@ -0,0 +1,8 @@
+QEMU XTENSA 'VIRT' BOARD
+M: Jiaxun Yang <jiaxun.yang at flygoat.com>
+M: Max Filippov <jcmvbkbc at gmail.com>
+S: Maintained
+F: board/emulation/qemu-xtensa/
+F: board/emulation/common/
+F: include/configs/qemu-xtensa.h
+F: configs/qemu-xtensa-dc233c_defconfig
diff --git a/board/emulation/qemu-xtensa/Makefile b/board/emulation/qemu-xtensa/Makefile
new file mode 100644
index 000000000000..0f33a65f6c6b
--- /dev/null
+++ b/board/emulation/qemu-xtensa/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (C) 2024, Jiaxun Yang <jiaxun.yang at flygoat.com>
+
+obj-y += qemu-xtensa.o
diff --git a/board/emulation/qemu-xtensa/qemu-xtensa.c b/board/emulation/qemu-xtensa/qemu-xtensa.c
new file mode 100644
index 000000000000..0ca83341c25c
--- /dev/null
+++ b/board/emulation/qemu-xtensa/qemu-xtensa.c
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018, Bin Meng <bmeng.cn at gmail.com>
+ */
+
+#include <dm.h>
+#include <cpu.h>
+#include <log.h>
+#include <init.h>
+#include <usb.h>
+#include <virtio_types.h>
+#include <virtio.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int board_init(void)
+{
+ return 0;
+}
+
+unsigned long get_board_sys_clk(void)
+{
+ return gd->cpu_clk ? gd->cpu_clk : 40000000;
+}
+
+int dram_init(void)
+{
+ return fdtdec_setup_mem_size_base();
+}
+
+int board_early_init_f(void)
+{
+ struct cpu_plat *cpu_plat;
+ struct udevice *cpu = cpu_get_current_dev();
+
+ if (!cpu)
+ return -ENODEV;
+
+ cpu_plat = dev_get_parent_plat(cpu);
+ if (!cpu_plat)
+ return -ENODEV;
+
+ gd->cpu_clk = cpu_plat->timebase_freq;
+ return 0;
+}
+
+int board_late_init(void)
+{
+ /* start usb so that usb keyboard can be used as input device */
+ if (CONFIG_IS_ENABLED(USB_KEYBOARD))
+ usb_init();
+
+ /*
+ * Make sure virtio bus is enumerated so that peripherals
+ * on the virtio bus can be discovered by their drivers
+ */
+ virtio_init();
+
+ return 0;
+}
diff --git a/configs/qemu-xtensa-dc233c_defconfig b/configs/qemu-xtensa-dc233c_defconfig
new file mode 100644
index 000000000000..e6f40b37ed8e
--- /dev/null
+++ b/configs/qemu-xtensa-dc233c_defconfig
@@ -0,0 +1,32 @@
+CONFIG_XTENSA=y
+CONFIG_SYS_CPU="dc233c"
+CONFIG_SYS_MALLOC_LEN=0x40000
+CONFIG_SYS_MALLOC_F_LEN=0x400
+CONFIG_ENV_SIZE=0x20000
+CONFIG_DEFAULT_DEVICE_TREE="virt"
+CONFIG_SYS_MONITOR_LEN=262144
+CONFIG_SYS_LOAD_ADDR=0x02000000
+CONFIG_TARGET_QEMU_XTENSA=y
+CONFIG_REMAKE_ELF=y
+CONFIG_SYS_MONITOR_BASE=0xF6000000
+CONFIG_DYNAMIC_SYS_CLK_FREQ=y
+CONFIG_SHOW_BOOT_PROGRESS=y
+CONFIG_BOOTDELAY=10
+CONFIG_AUTOBOOT_KEYED=y
+CONFIG_AUTOBOOT_PROMPT="Autobooting in %d seconds, press <SPACE> to stop\n"
+CONFIG_AUTOBOOT_STOP_STR=" "
+CONFIG_SYS_PBSIZE=1049
+CONFIG_SYS_MALLOC_BOOTPARAMS=y
+CONFIG_HUSH_PARSER=y
+CONFIG_SYS_PROMPT="U-Boot> "
+CONFIG_CMD_ASKENV=y
+CONFIG_CRC32_VERIFY=y
+CONFIG_CMD_MX_CYCLIC=y
+CONFIG_CMD_SAVES=y
+CONFIG_CMD_DHCP=y
+CONFIG_CMD_PING=y
+CONFIG_CMD_DIAG=y
+CONFIG_USE_BOOTFILE=y
+CONFIG_BOOTFILE="uImage"
+CONFIG_VERSION_VARIABLE=y
+CONFIG_SYSRESET=y
diff --git a/include/configs/qemu-xtensa.h b/include/configs/qemu-xtensa.h
new file mode 100644
index 000000000000..505aa0646bc9
--- /dev/null
+++ b/include/configs/qemu-xtensa.h
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2007-2013 Tensilica, Inc.
+ * Copyright (C) 2014 - 2016 Cadence Design Systems Inc.
+ * Copyright (C) 2024 Jiaxun Yang <jiaxun.yang at flygoat.com>
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#include <asm/arch/core.h>
+#include <asm/addrspace.h>
+#include <asm/config.h>
+
+#if XCHAL_HAVE_PTP_MMU
+#define CFG_SYS_MEMORY_BASE \
+ (XCHAL_VECBASE_RESET_VADDR - XCHAL_VECBASE_RESET_PADDR)
+#define CFG_SYS_IO_BASE 0xf0000000
+#define CFG_SYS_SDRAM_SIZE 0x80000000 /* xtensa.sysram0 */
+#else
+#define CFG_SYS_MEMORY_BASE 0x60000000
+#define CFG_SYS_SDRAM_SIZE 0x08000000 /* xtensa.sysram0 */
+#endif
+
+#define CFG_SYS_SDRAM_BASE MEMADDR(0x00000000)
+
+#if defined(CFG_MAX_MEM_MAPPED) && \
+ CFG_MAX_MEM_MAPPED < CFG_SYS_SDRAM_SIZE
+#define XTENSA_SYS_TEXT_ADDR \
+ (MEMADDR(CFG_MAX_MEM_MAPPED) - CONFIG_SYS_MONITOR_LEN)
+#else
+#define XTENSA_SYS_TEXT_ADDR \
+ (MEMADDR(CFG_SYS_SDRAM_SIZE) - CONFIG_SYS_MONITOR_LEN)
+#endif
+
+#endif /* __CONFIG_H */
--
2.43.0
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