From 6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 18:29:51 +0200 Subject: Adding upstream version 2.06. Signed-off-by: Daniel Baumann --- grub-core/kern/riscv/cache.c | 63 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 grub-core/kern/riscv/cache.c (limited to 'grub-core/kern/riscv/cache.c') diff --git a/grub-core/kern/riscv/cache.c b/grub-core/kern/riscv/cache.c new file mode 100644 index 0000000..47777a0 --- /dev/null +++ b/grub-core/kern/riscv/cache.c @@ -0,0 +1,63 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2018 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see . + */ + +#include +#include + +static grub_int64_t dlinesz; +static grub_int64_t ilinesz; + +/* Prototypes for asm functions. */ +void grub_arch_clean_dcache_range (grub_addr_t beg, grub_addr_t end, + grub_size_t line_size); +void grub_arch_invalidate_icache_range (grub_addr_t beg, grub_addr_t end, + grub_size_t line_size); + +static void +probe_caches (void) +{ + /* TODO */ + dlinesz = 32; + ilinesz = 32; +} + +void +grub_arch_sync_caches (void *address, grub_size_t len) +{ + grub_size_t start, end, max_align; + + if (dlinesz == 0) + probe_caches(); + if (dlinesz == 0) + grub_fatal ("Unknown cache line size!"); + + max_align = dlinesz > ilinesz ? dlinesz : ilinesz; + + start = ALIGN_DOWN ((grub_size_t) address, max_align); + end = ALIGN_UP ((grub_size_t) address + len, max_align); + + grub_arch_clean_dcache_range (start, end, dlinesz); + grub_arch_invalidate_icache_range (start, end, ilinesz); +} + +void +grub_arch_sync_dma_caches (volatile void *address __attribute__((unused)), + grub_size_t len __attribute__((unused))) +{ + /* DMA incoherent devices not supported yet */ +} -- cgit v1.2.3