On Wed, Sep 1, 2021 at 10:06 AM Rick Chen <rickche...@gmail.com> wrote: > > > From: Zong Li <zong...@sifive.com> > > Sent: Tuesday, August 31, 2021 5:21 PM > > To: Rick Jian-Zhi Chen(陳建志) <r...@andestech.com>; Leo Yu-Chi Liang(梁育齊) > > <ycli...@andestech.com>; bmeng...@gmail.com; sean...@gmail.com; > > green....@sifive.com; paul.walms...@sifive.com; s...@chromium.org; > > u-boot@lists.denx.de > > Cc: Zong Li <zong...@sifive.com> > > Subject: [PATCH v4 2/4] riscv: lib: implement enable_caches for sifive cache > > > > The enable_caches is a generic hook for architecture-implemented, we define > > this function to enable composable cache of sifive platforms. > > > > In sifive_cache, it invokes the generic cache_enable interface of cache > > uclass to execute the relative implementation in SiFive ccache driver. > > > > Signed-off-by: Zong Li <zong...@sifive.com> > > --- > > arch/riscv/Kconfig | 5 +++++ > > arch/riscv/lib/Makefile | 1 + > > arch/riscv/lib/sifive_cache.c | 27 +++++++++++++++++++++++++++ > > common/board_r.c | 4 ++-- > > 4 files changed, 35 insertions(+), 2 deletions(-) create mode 100644 > > arch/riscv/lib/sifive_cache.c > > > > diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index > > 4b0c3dffa6..ec651fe0a4 100644 > > --- a/arch/riscv/Kconfig > > +++ b/arch/riscv/Kconfig > > @@ -179,6 +179,11 @@ config SPL_SIFIVE_CLINT > > The SiFive CLINT block holds memory-mapped control and status > > registers > > associated with software and timer interrupts. > > > > +config SIFIVE_CACHE > > + bool > > + help > > + This enables the operations to configure SiFive cache > > + > > config ANDES_PLIC > > bool > > depends on RISCV_MMODE || SPL_RISCV_MMODE diff --git > > a/arch/riscv/lib/Makefile b/arch/riscv/lib/Makefile index > > c4cc41434b..06020fcc2a 100644 > > --- a/arch/riscv/lib/Makefile > > +++ b/arch/riscv/lib/Makefile > > @@ -10,6 +10,7 @@ obj-$(CONFIG_CMD_BOOTM) += bootm.o > > obj-$(CONFIG_CMD_BOOTI) += bootm.o image.o > > obj-$(CONFIG_CMD_GO) += boot.o > > obj-y += cache.o > > +obj-$(CONFIG_SIFIVE_CACHE) += sifive_cache.o > > ifeq ($(CONFIG_$(SPL_)RISCV_MMODE),y) > > obj-$(CONFIG_$(SPL_)SIFIVE_CLINT) += sifive_clint.o > > obj-$(CONFIG_ANDES_PLIC) += andes_plic.o diff --git > > a/arch/riscv/lib/sifive_cache.c b/arch/riscv/lib/sifive_cache.c new file > > mode 100644 index 0000000000..28154878fc > > --- /dev/null > > +++ b/arch/riscv/lib/sifive_cache.c > > @@ -0,0 +1,27 @@ > > +// SPDX-License-Identifier: GPL-2.0+ > > +/* > > + * Copyright (C) 2021 SiFive, Inc > > + */ > > + > > +#include <common.h> > > +#include <cache.h> > > +#include <cpu_func.h> > > +#include <dm.h> > > + > > +void enable_caches(void) > > +{ > > + struct udevice *dev; > > + int ret; > > + > > + /* Enable ways of ccache */ > > + ret = uclass_get_device_by_driver(UCLASS_CACHE, > > + DM_DRIVER_GET(sifive_ccache), > > + &dev); > > + if (ret) { > > + log_debug("Cannot enable cache ways"); > > + } else { > > + ret = cache_enable(dev); > > + if (ret) > > + log_debug("ccache enable failed"); > > + } > > +} > > diff --git a/common/board_r.c b/common/board_r.c index > > e3e6248a1f..630c2451a2 100644 > > --- a/common/board_r.c > > +++ b/common/board_r.c > > @@ -114,7 +114,7 @@ static int initr_reloc(void) > > return 0; > > } > > > > -#ifdef CONFIG_ARM > > +#if defined(CONFIG_ARM) || defined(CONFIG_RISCV) > > Here may cause other RISC-V platforms build error. > eq, ae350 will compile error as below: > common/board_r.o: in function `initr_caches': > /u-boot-riscv/common/board_r.c:124: undefined reference to `enable_caches' > Makefile:1795: recipe for target 'u-boot' failed > > Maybe you can separate this part an isolate patch: > board_r: enable initr_caches for RISC-V ... > And also implement the week function for others. >
Thanks for reviewing that. I would fix it and send the next version. > Thanks, > Rick > > > > > /* > > * Some of these functions are needed purely because the functions they > > * call return void. If we change them to return 0, these stubs can go > > away. > > @@ -607,7 +607,7 @@ static init_fnc_t init_sequence_r[] = { > > initr_trace, > > initr_reloc, > > /* TODO: could x86/PPC have this also perhaps? */ -#ifdef CONFIG_ARM > > +#if defined(CONFIG_ARM) || defined(CONFIG_RISCV) > > initr_caches, > > /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR. > > * A temporary mapping of IFC high region is since removed, > > -- > > 2.32.0