diff options
Diffstat (limited to 'src/arch/mips/cache.c')
-rw-r--r-- | src/arch/mips/cache.c | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/src/arch/mips/cache.c b/src/arch/mips/cache.c deleted file mode 100644 index 2b56174898..0000000000 --- a/src/arch/mips/cache.c +++ /dev/null @@ -1,114 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * This program 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; version 2 of the License. - * - * This program 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. - */ - -#include <arch/cache.h> -#include <arch/cpu.h> -#include <console/console.h> -#include <program_loading.h> -#include <symbols.h> - -/* cache_op: issues cache operation for specified address */ -#define cache_op(op, addr) \ -({ \ - __asm__ __volatile__( \ - ".set push\n\t" \ - ".set noreorder\n\t" \ - ".set mips32\n\t" \ - "cache %0, %1\n\t" \ - ".set mips0\n\t" \ - ".set pop\n\t" \ - : \ - : "i" (op), "R" (*(unsigned char *)(addr))); \ -}) - -#define MIPS_CONFIG1_DL_SHIFT 10 -#define MIPS_CONFIG1_DL_MASK (0x00000007) -#define MIPS_CONFIG1_IL_SHIFT 19 -#define MIPS_CONFIG1_IL_MASK (0x00000007) -#define MIPS_CONFIG2_SL_SHIFT 4 -#define MIPS_CONFIG2_SL_MASK (0x0000000F) - -/* - * get_cache_line_size: - * Read config register - * Isolate instruction cache line size - * Interpret value as per MIPS manual: 2 << value - * Return cache line size - */ -static int get_cache_line_size(uint8_t type) -{ - switch (type) { - case ICACHE: - return 2 << ((read_c0_config1() >> MIPS_CONFIG1_IL_SHIFT) & - MIPS_CONFIG1_IL_MASK); - case DCACHE: - return 2 << ((read_c0_config1() >> MIPS_CONFIG1_DL_SHIFT) & - MIPS_CONFIG1_DL_MASK); - case L2CACHE: - return 2 << ((read_c0_config2() >> MIPS_CONFIG2_SL_SHIFT) & - MIPS_CONFIG2_SL_MASK); - default: - printk(BIOS_ERR, "%s: Error: unsupported cache type.\n", - __func__); - return 0; - } - return 0; -} - -void perform_cache_operation(uintptr_t start, size_t size, uint8_t operation) -{ - u32 line_size, line_mask; - uintptr_t end; - - line_size = get_cache_line_size((operation >> CACHE_TYPE_SHIFT) & - CACHE_TYPE_MASK); - if (!line_size) - return; - line_mask = ~(line_size-1); - end = (start + (line_size - 1) + size) & line_mask; - start &= line_mask; - if ((operation & L2CACHE) == L2CACHE) - write_c0_l23taglo(0); - while (start < end) { - switch (operation) { - case CACHE_CODE(ICACHE, WB_INVD): - cache_op(CACHE_CODE(ICACHE, WB_INVD), start); - break; - case CACHE_CODE(DCACHE, WB_INVD): - cache_op(CACHE_CODE(DCACHE, WB_INVD), start); - break; - case CACHE_CODE(L2CACHE, WB_INVD): - cache_op(CACHE_CODE(L2CACHE, WB_INVD), start); - break; - default: - return; - } - start += line_size; - } - asm("sync"); -} - -void cache_invalidate_all(uintptr_t start, size_t size) -{ - perform_cache_operation(start, size, CACHE_CODE(ICACHE, WB_INVD)); - perform_cache_operation(start, size, CACHE_CODE(DCACHE, WB_INVD)); - perform_cache_operation(start, size, CACHE_CODE(L2CACHE, WB_INVD)); -} - -void arch_segment_loaded(uintptr_t start, size_t size, int flags) -{ - cache_invalidate_all(start, size); - if (flags & SEG_FINAL) - cache_invalidate_all((uintptr_t)_cbfs_cache, - REGION_SIZE(cbfs_cache)); -} |