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105 lines
2.0 KiB
105 lines
2.0 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* (C) Copyright 2000 |
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* Wolfgang Denk, DENX Software Engineering, [email protected]. |
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*/ |
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/* |
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* Cache support: switch on or off, get status |
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*/ |
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#include <common.h> |
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#include <command.h> |
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#include <linux/compiler.h> |
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static int parse_argv(const char *); |
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void __weak invalidate_icache_all(void) |
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{ |
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/* please define arch specific invalidate_icache_all */ |
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puts("No arch specific invalidate_icache_all available!\n"); |
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} |
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static int do_icache(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
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{ |
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switch (argc) { |
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case 2: /* on / off */ |
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switch (parse_argv(argv[1])) { |
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case 0: |
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icache_disable(); |
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break; |
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case 1: |
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icache_enable(); |
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break; |
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case 2: |
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invalidate_icache_all(); |
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break; |
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} |
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break; |
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case 1: /* get status */ |
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printf("Instruction Cache is %s\n", |
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icache_status() ? "ON" : "OFF"); |
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return 0; |
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default: |
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return CMD_RET_USAGE; |
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} |
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return 0; |
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} |
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void __weak flush_dcache_all(void) |
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{ |
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puts("No arch specific flush_dcache_all available!\n"); |
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/* please define arch specific flush_dcache_all */ |
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} |
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static int do_dcache(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
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{ |
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switch (argc) { |
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case 2: /* on / off */ |
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switch (parse_argv(argv[1])) { |
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case 0: |
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dcache_disable(); |
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break; |
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case 1: |
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dcache_enable(); |
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break; |
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case 2: |
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flush_dcache_all(); |
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break; |
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} |
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break; |
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case 1: /* get status */ |
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printf("Data (writethrough) Cache is %s\n", |
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dcache_status() ? "ON" : "OFF"); |
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return 0; |
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default: |
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return CMD_RET_USAGE; |
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} |
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return 0; |
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} |
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static int parse_argv(const char *s) |
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{ |
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if (strcmp(s, "flush") == 0) |
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return 2; |
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else if (strcmp(s, "on") == 0) |
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return 1; |
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else if (strcmp(s, "off") == 0) |
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return 0; |
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return -1; |
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} |
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U_BOOT_CMD( |
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icache, 2, 1, do_icache, |
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"enable or disable instruction cache", |
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"[on, off, flush]\n" |
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" - enable, disable, or flush instruction cache" |
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); |
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U_BOOT_CMD( |
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dcache, 2, 1, do_dcache, |
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"enable or disable data cache", |
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"[on, off, flush]\n" |
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" - enable, disable, or flush data (writethrough) cache" |
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);
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