From: Anup Patel Date: Mon, 25 Feb 2019 08:14:10 +0000 (+0000) Subject: riscv: Rename cpu/qemu to cpu/generic X-Git-Tag: v2019.04-rc3~9^2~13 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=fdff1f96a6505bccb258f5b52e6c94c7e0b29512;p=oweals%2Fu-boot.git riscv: Rename cpu/qemu to cpu/generic The QEMU CPU support under arch/riscv is pretty much generic and works fine for SiFive Unleashed as well. In fact, there will be quite a few RISC-V SOCs for which QEMU CPU support will work fine. This patch renames cpu/qemu to cpu/generic to indicate the above fact. If there are SOC specific errata workarounds required in cpu/generic then those can be done at runtime in cpu/generic based on CPU vendor specific DT compatible string. Signed-off-by: Anup Patel Reviewed-by: Alexander Graf Reviewed-by: Lukas Auer Reviewed-by: Bin Meng --- diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index c45e4d73a8..6879047ff7 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -22,7 +22,7 @@ source "board/emulation/qemu-riscv/Kconfig" # platform-specific options below source "arch/riscv/cpu/ax25/Kconfig" -source "arch/riscv/cpu/qemu/Kconfig" +source "arch/riscv/cpu/generic/Kconfig" # architecture-specific options below diff --git a/arch/riscv/cpu/generic/Kconfig b/arch/riscv/cpu/generic/Kconfig new file mode 100644 index 0000000000..1d6ab5032d --- /dev/null +++ b/arch/riscv/cpu/generic/Kconfig @@ -0,0 +1,12 @@ +# SPDX-License-Identifier: GPL-2.0+ +# +# Copyright (C) 2018, Bin Meng + +config GENERIC_RISCV + bool + select ARCH_EARLY_INIT_R + imply CPU + imply CPU_RISCV + imply RISCV_TIMER + imply SIFIVE_CLINT if RISCV_MMODE + imply CMD_CPU diff --git a/arch/riscv/cpu/generic/Makefile b/arch/riscv/cpu/generic/Makefile new file mode 100644 index 0000000000..258e4620dd --- /dev/null +++ b/arch/riscv/cpu/generic/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0+ +# +# Copyright (C) 2018, Bin Meng + +obj-y += dram.o +obj-y += cpu.o diff --git a/arch/riscv/cpu/generic/cpu.c b/arch/riscv/cpu/generic/cpu.c new file mode 100644 index 0000000000..ad2950ce40 --- /dev/null +++ b/arch/riscv/cpu/generic/cpu.c @@ -0,0 +1,35 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2018, Bin Meng + */ + +#include +#include + +/* + * cleanup_before_linux() is called just before we call linux + * it prepares the processor for linux + * + * we disable interrupt and caches. + */ +int cleanup_before_linux(void) +{ + disable_interrupts(); + + cache_flush(); + + return 0; +} + +/* To enumerate devices on the /soc/ node, create a "simple-bus" driver */ +static const struct udevice_id riscv_virtio_soc_ids[] = { + { .compatible = "riscv-virtio-soc" }, + { } +}; + +U_BOOT_DRIVER(riscv_virtio_soc) = { + .name = "riscv_virtio_soc", + .id = UCLASS_SIMPLE_BUS, + .of_match = riscv_virtio_soc_ids, + .flags = DM_FLAG_PRE_RELOC, +}; diff --git a/arch/riscv/cpu/generic/dram.c b/arch/riscv/cpu/generic/dram.c new file mode 100644 index 0000000000..84d87d2a7f --- /dev/null +++ b/arch/riscv/cpu/generic/dram.c @@ -0,0 +1,17 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2018, Bin Meng + */ + +#include +#include + +int dram_init(void) +{ + return fdtdec_setup_mem_size_base(); +} + +int dram_init_banksize(void) +{ + return fdtdec_setup_memory_banksize(); +} diff --git a/arch/riscv/cpu/qemu/Kconfig b/arch/riscv/cpu/qemu/Kconfig deleted file mode 100644 index f48751e6de..0000000000 --- a/arch/riscv/cpu/qemu/Kconfig +++ /dev/null @@ -1,12 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0+ -# -# Copyright (C) 2018, Bin Meng - -config QEMU_RISCV - bool - select ARCH_EARLY_INIT_R - imply CPU - imply CPU_RISCV - imply RISCV_TIMER - imply SIFIVE_CLINT if RISCV_MMODE - imply CMD_CPU diff --git a/arch/riscv/cpu/qemu/Makefile b/arch/riscv/cpu/qemu/Makefile deleted file mode 100644 index 258e4620dd..0000000000 --- a/arch/riscv/cpu/qemu/Makefile +++ /dev/null @@ -1,6 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0+ -# -# Copyright (C) 2018, Bin Meng - -obj-y += dram.o -obj-y += cpu.o diff --git a/arch/riscv/cpu/qemu/cpu.c b/arch/riscv/cpu/qemu/cpu.c deleted file mode 100644 index ad2950ce40..0000000000 --- a/arch/riscv/cpu/qemu/cpu.c +++ /dev/null @@ -1,35 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Copyright (C) 2018, Bin Meng - */ - -#include -#include - -/* - * cleanup_before_linux() is called just before we call linux - * it prepares the processor for linux - * - * we disable interrupt and caches. - */ -int cleanup_before_linux(void) -{ - disable_interrupts(); - - cache_flush(); - - return 0; -} - -/* To enumerate devices on the /soc/ node, create a "simple-bus" driver */ -static const struct udevice_id riscv_virtio_soc_ids[] = { - { .compatible = "riscv-virtio-soc" }, - { } -}; - -U_BOOT_DRIVER(riscv_virtio_soc) = { - .name = "riscv_virtio_soc", - .id = UCLASS_SIMPLE_BUS, - .of_match = riscv_virtio_soc_ids, - .flags = DM_FLAG_PRE_RELOC, -}; diff --git a/arch/riscv/cpu/qemu/dram.c b/arch/riscv/cpu/qemu/dram.c deleted file mode 100644 index 84d87d2a7f..0000000000 --- a/arch/riscv/cpu/qemu/dram.c +++ /dev/null @@ -1,17 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Copyright (C) 2018, Bin Meng - */ - -#include -#include - -int dram_init(void) -{ - return fdtdec_setup_mem_size_base(); -} - -int dram_init_banksize(void) -{ - return fdtdec_setup_memory_banksize(); -} diff --git a/board/emulation/qemu-riscv/Kconfig b/board/emulation/qemu-riscv/Kconfig index 0d865acf10..88d07d568e 100644 --- a/board/emulation/qemu-riscv/Kconfig +++ b/board/emulation/qemu-riscv/Kconfig @@ -7,7 +7,7 @@ config SYS_VENDOR default "emulation" config SYS_CPU - default "qemu" + default "generic" config SYS_CONFIG_NAME default "qemu-riscv" @@ -18,7 +18,7 @@ config SYS_TEXT_BASE config BOARD_SPECIFIC_OPTIONS # dummy def_bool y - select QEMU_RISCV + select GENERIC_RISCV imply SYS_NS16550 imply VIRTIO_MMIO imply VIRTIO_NET