Enable all cache ways from u-boot proper.
Signed-off-by: Pragnesh Patel pragnesh.patel@sifive.com --- board/sifive/fu540/Makefile | 1 + board/sifive/fu540/cache.c | 20 ++++++++++++++++++++ board/sifive/fu540/cache.h | 13 +++++++++++++ board/sifive/fu540/fu540.c | 6 ++++-- 4 files changed, 38 insertions(+), 2 deletions(-) create mode 100644 board/sifive/fu540/cache.c create mode 100644 board/sifive/fu540/cache.h
diff --git a/board/sifive/fu540/Makefile b/board/sifive/fu540/Makefile index b05e2f5807..3b867bbd89 100644 --- a/board/sifive/fu540/Makefile +++ b/board/sifive/fu540/Makefile @@ -3,6 +3,7 @@ # Copyright (c) 2019 Western Digital Corporation or its affiliates.
obj-y += fu540.o +obj-y += cache.o
ifdef CONFIG_SPL_BUILD obj-y += spl.o diff --git a/board/sifive/fu540/cache.c b/board/sifive/fu540/cache.c new file mode 100644 index 0000000000..a0bcd2ba48 --- /dev/null +++ b/board/sifive/fu540/cache.c @@ -0,0 +1,20 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2019 SiFive, Inc + */ +#include <asm/io.h> + +/* Register offsets */ +#define CACHE_ENABLE 0x008 + +/* Enable ways; allow cache to use these ways */ +void cache_enable_ways(u64 base_addr, u8 value) +{ + volatile u32 *enable = (volatile u32 *)(base_addr + + CACHE_ENABLE); + /* memory barrier */ + mb(); + (*enable) = value; + /* memory barrier */ + mb(); +} diff --git a/board/sifive/fu540/cache.h b/board/sifive/fu540/cache.h new file mode 100644 index 0000000000..425124a23b --- /dev/null +++ b/board/sifive/fu540/cache.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (c) 2019 SiFive, Inc + */ + +#ifndef FU540_CACHE_H +#define FU540_CACHE_H + +#define CACHE_CTRL_ADDR _AC(0x2010000, UL) + +void cache_enable_ways(u64 base_addr, u8 value); + +#endif /* FU540_CACHE_H */ diff --git a/board/sifive/fu540/fu540.c b/board/sifive/fu540/fu540.c index fba9469c2d..661b2ad282 100644 --- a/board/sifive/fu540/fu540.c +++ b/board/sifive/fu540/fu540.c @@ -13,6 +13,8 @@ #include <misc.h> #include <spl.h>
+#include "cache.h" + /* * This define is a value used for error/unknown serial. * If we really care about distinguishing errors and 0 is @@ -111,8 +113,8 @@ int misc_init_r(void)
int board_init(void) { - /* For now nothing to do here. */ - + /* enable all cache ways */ + cache_enable_ways(CACHE_CTRL_ADDR, 15); return 0; }