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platform: Drop qemu/sifive_u support
With QEMU v4.2 RISC-V changes to improve the emulation fidelity of 'sifive_u' machine, OpenSBI v0.4 / U-Boot v2019.10 / Linux kernel v5.3 images built for the SiFive HiFive Unleashed board can be used out of the box without any special hack. Hence there is no need for us to continue supporting such a special target in OpenSBI. Going forward, sifive/fu540 platform can be used on both real hardware and QEMU 'sifive_u' machine. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
This commit is contained in:
Bin Meng
Anup Patel
parent
5ff1ab0ed8
commit
6d0b4c520d
8 changed files with 8 additions and 286 deletions
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@ -44,9 +44,8 @@ follows:
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*FW_JUMP* Example
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-----------------
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The *[qemu/virt]* and *[qemu/sifive_u]* platforms illustrate how to configure
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and use a *FW_JUMP* firmware. Detailed information regarding these platforms
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can be found in the platform documentation files.
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The *[qemu/virt]* platform illustrates how to configure and use a *FW_JUMP*
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firmware. Detailed information regarding these platforms can be found in the
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platform documentation files.
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[qemu/virt]: ../platform/qemu_virt.md
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[qemu/sifive_u]: ../platform/qemu_sifive_u.md
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@ -79,12 +79,11 @@ file. The parameters currently defined are as follows:
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*FW_PAYLOAD* Example
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--------------------
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The *[qemu/virt]* and *[qemu/sifive_u]* platforms illustrate how to configure
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and use a *FW_PAYLOAD* firmware. Detailed information regarding these platforms
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can be found in the platform documentation files.
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The *[qemu/virt]* platforms illustrate how to configure and use a *FW_PAYLOAD*
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firmware. Detailed information regarding these platforms can be found in the
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platform documentation files.
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The *kendryte/k210* platform also enables a build of a *FW_PAYLOAD* using an
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internally defined device tree file (*FW_PAYLOAD_FDT*).
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[qemu/virt]: ../platform/qemu_virt.md
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[qemu/sifive_u]: ../platform/qemu_sifive_u.md
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@ -8,14 +8,9 @@ OpenSBI currently supports the following virtual and hardware platforms:
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development and tests. More details on this platform can be found in the
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file *[qemu_virt.md]*.
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* **QEMU SiFive Unleashed Machine**: Platform support for the *sifive_u* QEMU
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virtual RISC-V machine. This is an emulation machine of the HiFive Unleashed
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board by SiFive. More details on this platform can be found in the file
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*[qemu_sifive_u.md]*.
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* **SiFive FU540 SoC**: Platform support for SiFive FU540 SoC used on the
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HiFive Unleashed board. This platform is very similar to the *QEMU sifive_u*
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platform. More details on this platform can be found in the file
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HiFive Unleashed board, as well as the *sifive_u* QEMU virtual RISC-V
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machine. More details on this platform can be found in the file
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*[sifive_fu540.md]*.
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* **Kendryte K210 SoC**: Platform support for the Kendryte K210 SoC used on
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@ -35,7 +30,6 @@ template files for implementing support for a new platform. The *object.mk*,
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facilitate the implementation.
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[qemu_virt.md]: qemu_virt.md
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[qemu_sifive_u.md]: qemu_sifive_u.md
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[sifive_fu540.md]: sifive_fu540.md
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[ariane-fpga.md]: ariane-fpga.md
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[andes_ae350.md]: andes-ae350.md
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@ -1,60 +0,0 @@
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QEMU SiFive Unleashed Machine Platform
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======================================
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The **QEMU SiFive Unleashed Machine** is an emulation of the SiFive Unleashed
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platform.
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To build this platform specific library and firmwares, provide the
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*PLATFORM=qemu/sifive_u* parameter to the top level `make` command line.
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Note with QEMU v4.2 release, the QEMU *sifive_u* machine has been updated to
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closely match the SiFive HiFive Unleashed hardware and can therefore run the
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same firmware as what gets loaded onto the board, and OpenSBI's *qemu/sifive_u*
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platform should only be used with QEMU v4.1 release or before.
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The special *qemu/sifive_u* platform support will be dropped in the future
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OpenSBI release.
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Platform Options
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----------------
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The *QEMU SiFive Unleashed Machine* platform does not have any platform specific
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options.
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Executing on QEMU RISC-V 64-bit
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-------------------------------
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**No Payload Case**
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Build:
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```
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make PLATFORM=qemu/sifive_u
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```
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Run:
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```
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qemu-system-riscv64 -M sifive_u -m 256M -display none -serial stdio \
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-kernel build/platform/qemu/sifive_u/firmware/fw_payload.elf
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```
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**U-Boot as a Payload**
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Note: the command line examples here assume that U-Boot was compiled using
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the `sifive_fu540_defconfig` configuration.
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Build:
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```
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make PLATFORM=qemu/sifive_u FW_PAYLOAD_PATH=<uboot_build_directory>/u-boot.bin
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```
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Run:
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```
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qemu-system-riscv64 -M sifive_u -m 256M -display none -serial stdio \
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-kernel build/platform/qemu/sifive_u/firmware/fw_payload.elf
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```
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or
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```
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qemu-system-riscv64 -M sifive_u -m 256M -display none -serial stdio \
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-kernel build/platform/qemu/sifive_u/firmware/fw_jump.elf \
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-device loader,file=<uboot_build_directory>/u-boot.bin,addr=0x80200000
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```
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@ -1,40 +0,0 @@
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#
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# SPDX-License-Identifier: BSD-2-Clause
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#
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# Copyright (c) 2019 Western Digital Corporation or its affiliates.
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#
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# Authors:
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# Anup Patel <anup.patel@wdc.com>
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#
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# Compiler flags
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platform-cppflags-y =
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platform-cflags-y =
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platform-asflags-y =
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platform-ldflags-y =
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# Command for platform specific "make run"
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platform-runcmd = qemu-system-riscv$(PLATFORM_RISCV_XLEN) -M sifive_u -m 256M \
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-nographic -kernel $(build_dir)/platform/qemu/sifive_u/firmware/fw_payload.elf
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# Blobs to build
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FW_TEXT_START=0x80000000
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FW_DYNAMIC=y
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FW_JUMP=y
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ifeq ($(PLATFORM_RISCV_XLEN), 32)
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# This needs to be 4MB alligned for 32-bit system
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FW_JUMP_ADDR=0x80400000
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else
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# This needs to be 2MB alligned for 64-bit system
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FW_JUMP_ADDR=0x80200000
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endif
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FW_JUMP_FDT_ADDR=0x82200000
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FW_PAYLOAD=y
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ifeq ($(PLATFORM_RISCV_XLEN), 32)
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# This needs to be 4MB alligned for 32-bit system
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FW_PAYLOAD_OFFSET=0x400000
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else
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# This needs to be 2MB alligned for 64-bit system
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FW_PAYLOAD_OFFSET=0x200000
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endif
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FW_PAYLOAD_FDT_ADDR=0x82200000
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@ -1,10 +0,0 @@
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#
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# SPDX-License-Identifier: BSD-2-Clause
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#
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# Copyright (c) 2019 Western Digital Corporation or its affiliates.
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#
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# Authors:
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# Anup Patel <anup.patel@wdc.com>
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#
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platform-objs-y += platform.o
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@ -1,158 +0,0 @@
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/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2019 Western Digital Corporation or its affiliates.
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*
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* Authors:
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* Anup Patel <anup.patel@wdc.com>
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*/
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#include <sbi/riscv_encoding.h>
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#include <sbi/sbi_const.h>
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#include <sbi/sbi_hart.h>
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#include <sbi/sbi_platform.h>
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#include <sbi_utils/irqchip/plic.h>
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#include <sbi_utils/serial/sifive-uart.h>
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#include <sbi_utils/sys/clint.h>
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/* clang-format off */
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#define SIFIVE_U_HART_COUNT 4
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#define SIFIVE_U_HART_STACK_SIZE 8192
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#define SIFIVE_U_SYS_CLK 1000000000
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#define SIFIVE_U_PERIPH_CLK (SIFIVE_U_SYS_CLK / 2)
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#define SIFIVE_U_CLINT_ADDR 0x2000000
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#define SIFIVE_U_PLIC_ADDR 0xc000000
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#define SIFIVE_U_PLIC_NUM_SOURCES 0x35
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#define SIFIVE_U_PLIC_NUM_PRIORITIES 7
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#define SIFIVE_U_UART0_ADDR 0x10010000
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#define SIFIVE_U_UART1_ADDR 0x10011000
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/* clang-format on */
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static int sifive_u_final_init(bool cold_boot)
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{
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void *fdt;
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if (!cold_boot)
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return 0;
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fdt = sbi_scratch_thishart_arg1_ptr();
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plic_fdt_fixup(fdt, "riscv,plic0");
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return 0;
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}
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static u32 sifive_u_pmp_region_count(u32 hartid)
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{
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return 1;
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}
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static int sifive_u_pmp_region_info(u32 hartid, u32 index, ulong *prot,
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ulong *addr, ulong *log2size)
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{
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int ret = 0;
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switch (index) {
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case 0:
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*prot = PMP_R | PMP_W | PMP_X;
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*addr = 0;
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*log2size = __riscv_xlen;
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break;
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default:
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ret = -1;
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break;
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};
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return ret;
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}
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static int sifive_u_console_init(void)
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{
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return sifive_uart_init(SIFIVE_U_UART0_ADDR, SIFIVE_U_PERIPH_CLK,
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115200);
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}
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static int sifive_u_irqchip_init(bool cold_boot)
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{
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int rc;
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u32 hartid = sbi_current_hartid();
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if (cold_boot) {
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rc = plic_cold_irqchip_init(SIFIVE_U_PLIC_ADDR,
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SIFIVE_U_PLIC_NUM_SOURCES,
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SIFIVE_U_HART_COUNT);
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if (rc)
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return rc;
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}
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return plic_warm_irqchip_init(hartid, (2 * hartid), (2 * hartid + 1));
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}
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static int sifive_u_ipi_init(bool cold_boot)
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{
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int rc;
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if (cold_boot) {
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rc = clint_cold_ipi_init(SIFIVE_U_CLINT_ADDR,
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SIFIVE_U_HART_COUNT);
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if (rc)
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return rc;
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}
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return clint_warm_ipi_init();
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}
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static int sifive_u_timer_init(bool cold_boot)
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{
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int rc;
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if (cold_boot) {
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rc = clint_cold_timer_init(SIFIVE_U_CLINT_ADDR,
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SIFIVE_U_HART_COUNT, TRUE);
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if (rc)
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return rc;
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}
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return clint_warm_timer_init();
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}
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static int sifive_u_system_down(u32 type)
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{
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/* For now nothing to do. */
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return 0;
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}
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const struct sbi_platform_operations platform_ops = {
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.pmp_region_count = sifive_u_pmp_region_count,
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.pmp_region_info = sifive_u_pmp_region_info,
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.final_init = sifive_u_final_init,
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.console_putc = sifive_uart_putc,
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.console_getc = sifive_uart_getc,
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.console_init = sifive_u_console_init,
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.irqchip_init = sifive_u_irqchip_init,
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.ipi_send = clint_ipi_send,
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.ipi_clear = clint_ipi_clear,
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.ipi_init = sifive_u_ipi_init,
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.timer_value = clint_timer_value,
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.timer_event_stop = clint_timer_event_stop,
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.timer_event_start = clint_timer_event_start,
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.timer_init = sifive_u_timer_init,
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.system_reboot = sifive_u_system_down,
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.system_shutdown = sifive_u_system_down
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};
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const struct sbi_platform platform = {
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.opensbi_version = OPENSBI_VERSION,
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.platform_version = SBI_PLATFORM_VERSION(0x0, 0x01),
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.name = "QEMU SiFive Unleashed",
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.features = SBI_PLATFORM_DEFAULT_FEATURES,
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.hart_count = SIFIVE_U_HART_COUNT,
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.hart_stack_size = SIFIVE_U_HART_STACK_SIZE,
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.disabled_hart_mask = 0,
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.platform_ops_addr = (unsigned long)&platform_ops
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};
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@ -85,12 +85,10 @@ case "${BUILD_RISCV_XLEN}" in
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32)
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# Setup 32-bit platform list
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BUILD_PLATFORM_SUBDIR=("qemu/virt")
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BUILD_PLATFORM_SUBDIR+=("qemu/sifive_u")
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;;
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64)
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# Setup 64-bit platform list
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BUILD_PLATFORM_SUBDIR=("qemu/virt")
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BUILD_PLATFORM_SUBDIR+=("qemu/sifive_u")
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BUILD_PLATFORM_SUBDIR+=("sifive/fu540")
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BUILD_PLATFORM_SUBDIR+=("kendryte/k210")
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BUILD_PLATFORM_SUBDIR+=("ariane-fpga")
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