83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
106 lines
2.0 KiB
C
106 lines
2.0 KiB
C
// 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, wd@denx.de.
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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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