diff options
-rw-r--r-- | arch/nios2/cpu/cpu.c | 15 | ||||
-rw-r--r-- | arch/nios2/include/asm/cache.h | 13 | ||||
-rw-r--r-- | arch/nios2/lib/bootm.c | 6 | ||||
-rw-r--r-- | arch/nios2/lib/cache.S | 68 | ||||
-rw-r--r-- | arch/nios2/lib/cache.c | 129 |
5 files changed, 133 insertions, 98 deletions
diff --git a/arch/nios2/cpu/cpu.c b/arch/nios2/cpu/cpu.c index 0e71b43..e4217c8 100644 --- a/arch/nios2/cpu/cpu.c +++ b/arch/nios2/cpu/cpu.c @@ -29,21 +29,6 @@ int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) return 0; } -int dcache_status(void) -{ - return 1; -} - -void dcache_enable(void) -{ - flush_dcache(CONFIG_SYS_DCACHE_SIZE, CONFIG_SYS_DCACHELINE_SIZE); -} - -void dcache_disable(void) -{ - flush_dcache(CONFIG_SYS_DCACHE_SIZE, CONFIG_SYS_DCACHELINE_SIZE); -} - int arch_cpu_init_dm(void) { struct udevice *dev; diff --git a/arch/nios2/include/asm/cache.h b/arch/nios2/include/asm/cache.h index 9b87c9f..dde43cd 100644 --- a/arch/nios2/include/asm/cache.h +++ b/arch/nios2/include/asm/cache.h @@ -8,18 +8,11 @@ #ifndef __ASM_NIOS2_CACHE_H_ #define __ASM_NIOS2_CACHE_H_ -extern void flush_dcache (unsigned long start, unsigned long size); -extern void flush_icache (unsigned long start, unsigned long size); - /* - * Valid L1 data cache line sizes for the NIOS2 architecture are 4, 16, and 32 - * bytes. If the board configuration has not specified one we default to the - * largest of these values for alignment of DMA buffers. + * Valid L1 data cache line sizes for the NIOS2 architecture are 4, + * 16, and 32 bytes. We default to the largest of these values for + * alignment of DMA buffers. */ -#ifdef CONFIG_SYS_CACHELINE_SIZE -#define ARCH_DMA_MINALIGN CONFIG_SYS_CACHELINE_SIZE -#else #define ARCH_DMA_MINALIGN 32 -#endif #endif /* __ASM_NIOS2_CACHE_H_ */ diff --git a/arch/nios2/lib/bootm.c b/arch/nios2/lib/bootm.c index c730a3f..4e5c269 100644 --- a/arch/nios2/lib/bootm.c +++ b/arch/nios2/lib/bootm.c @@ -6,9 +6,6 @@ */ #include <common.h> -#include <command.h> -#include <asm/byteorder.h> -#include <asm/cache.h> #define NIOS_MAGIC 0x534f494e /* enable command line and initrd passing */ @@ -40,8 +37,7 @@ int do_bootm_linux(int flag, int argc, char * const argv[], bootm_headers_t *ima /* flushes data and instruction caches before calling the kernel */ disable_interrupts(); - flush_dcache((ulong)kernel, CONFIG_SYS_DCACHE_SIZE); - flush_icache((ulong)kernel, CONFIG_SYS_ICACHE_SIZE); + flush_dcache_all(); debug("bootargs=%s @ 0x%lx\n", commandline, (ulong)&commandline); debug("initrd=0x%lx-0x%lx\n", (ulong)initrd_start, (ulong)initrd_end); diff --git a/arch/nios2/lib/cache.S b/arch/nios2/lib/cache.S deleted file mode 100644 index 683f005..0000000 --- a/arch/nios2/lib/cache.S +++ /dev/null @@ -1,68 +0,0 @@ -/* - * (C) Copyright 2004, Psyent Corporation <www.psyent.com> - * Scott McNutt <smcnutt@psyent.com> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <config.h> - - .text - - .global flush_dcache - -flush_dcache: - add r5, r5, r4 - movhi r8, %hi(CONFIG_SYS_DCACHELINE_SIZE) - ori r8, r8, %lo(CONFIG_SYS_DCACHELINE_SIZE) -0: flushd 0(r4) - add r4, r4, r8 - bltu r4, r5, 0b - ret - - - .global flush_icache - -flush_icache: - add r5, r5, r4 - movhi r8, %hi(CONFIG_SYS_ICACHELINE_SIZE) - ori r8, r8, %lo(CONFIG_SYS_ICACHELINE_SIZE) -1: flushi r4 - add r4, r4, r8 - bltu r4, r5, 1b - ret - - .global flush_dcache_range - -flush_dcache_range: - movhi r8, %hi(CONFIG_SYS_DCACHELINE_SIZE) - ori r8, r8, %lo(CONFIG_SYS_DCACHELINE_SIZE) -0: flushd 0(r4) - add r4, r4, r8 - bltu r4, r5, 0b - ret - - .global flush_cache - -flush_cache: - add r5, r5, r4 - mov r9, r4 - mov r10, r5 - - movhi r8, %hi(CONFIG_SYS_DCACHELINE_SIZE) - ori r8, r8, %lo(CONFIG_SYS_DCACHELINE_SIZE) -0: flushd 0(r4) - add r4, r4, r8 - bltu r4, r5, 0b - - mov r4, r9 - mov r5, r10 - movhi r8, %hi(CONFIG_SYS_ICACHELINE_SIZE) - ori r8, r8, %lo(CONFIG_SYS_ICACHELINE_SIZE) -1: flushi r4 - add r4, r4, r8 - bltu r4, r5, 1b - - sync - flushp - ret diff --git a/arch/nios2/lib/cache.c b/arch/nios2/lib/cache.c new file mode 100644 index 0000000..7c74e1a --- /dev/null +++ b/arch/nios2/lib/cache.c @@ -0,0 +1,129 @@ +/* + * Copyright (C) 2015 Thomas Chou <thomas@wytron.com.tw> + * Copyright (C) 2009, Wind River Systems Inc + * Implemented by fredrik.markstrom@gmail.com and ivarholmqvist@gmail.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/cache.h> + +DECLARE_GLOBAL_DATA_PTR; + +static void __flush_dcache(unsigned long start, unsigned long end) +{ + unsigned long addr; + + start &= ~(gd->arch.dcache_line_size - 1); + end += (gd->arch.dcache_line_size - 1); + end &= ~(gd->arch.dcache_line_size - 1); + + for (addr = start; addr < end; addr += gd->arch.dcache_line_size) { + __asm__ __volatile__ (" flushda 0(%0)\n" + : /* Outputs */ + : /* Inputs */ "r"(addr) + /* : No clobber */); + } +} + +static void __flush_dcache_all(unsigned long start, unsigned long end) +{ + unsigned long addr; + + start &= ~(gd->arch.dcache_line_size - 1); + end += (gd->arch.dcache_line_size - 1); + end &= ~(gd->arch.dcache_line_size - 1); + + if (end > start + gd->arch.dcache_size) + end = start + gd->arch.dcache_size; + + for (addr = start; addr < end; addr += gd->arch.dcache_line_size) { + __asm__ __volatile__ (" flushd 0(%0)\n" + : /* Outputs */ + : /* Inputs */ "r"(addr) + /* : No clobber */); + } +} + +static void __invalidate_dcache(unsigned long start, unsigned long end) +{ + unsigned long addr; + + start &= ~(gd->arch.dcache_line_size - 1); + end += (gd->arch.dcache_line_size - 1); + end &= ~(gd->arch.dcache_line_size - 1); + + for (addr = start; addr < end; addr += gd->arch.dcache_line_size) { + __asm__ __volatile__ (" initda 0(%0)\n" + : /* Outputs */ + : /* Inputs */ "r"(addr) + /* : No clobber */); + } +} + +static void __flush_icache(unsigned long start, unsigned long end) +{ + unsigned long addr; + + start &= ~(gd->arch.icache_line_size - 1); + end += (gd->arch.icache_line_size - 1); + end &= ~(gd->arch.icache_line_size - 1); + + if (end > start + gd->arch.icache_size) + end = start + gd->arch.icache_size; + + for (addr = start; addr < end; addr += gd->arch.icache_line_size) { + __asm__ __volatile__ (" flushi %0\n" + : /* Outputs */ + : /* Inputs */ "r"(addr) + /* : No clobber */); + } + __asm__ __volatile(" flushp\n"); +} + +void flush_dcache_all(void) +{ + __flush_dcache_all(0, gd->arch.dcache_size); + __flush_icache(0, gd->arch.icache_size); +} + +void flush_dcache_range(unsigned long start, unsigned long end) +{ + if (gd->arch.has_initda) + __flush_dcache(start, end); + else + __flush_dcache_all(start, end); +} + +void flush_cache(unsigned long start, unsigned long size) +{ + if (gd->arch.has_initda) + __flush_dcache(start, start + size); + else + __flush_dcache_all(start, start + size); + __flush_icache(start, start + size); +} + +void invalidate_dcache_range(unsigned long start, unsigned long end) +{ + if (gd->arch.has_initda) + __invalidate_dcache(start, end); + else + __flush_dcache_all(start, end); +} + +int dcache_status(void) +{ + return 1; +} + +void dcache_enable(void) +{ + flush_dcache_all(); +} + +void dcache_disable(void) +{ + flush_dcache_all(); +} |