| // SPDX-License-Identifier: GPL-2.0+ |
| * Sysgo Real-Time Solutions, GmbH <www.elinos.com> |
| * Marius Groeger <mgroeger@sysgo.de> |
| * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de> |
| static void cache_flush(void); |
| /************************************************************ |
| * sdelay() - simple spin loop. Will be constant time as |
| * its generally used in bypass conditions only. This |
| * is necessary until timers are accessible. |
| * not inline to increase chances its in cache when called |
| *************************************************************/ |
| void sdelay(unsigned long loops) |
| __asm__ volatile ("1:\n" "subs %0, %1, #1\n" |
| "bne 1b":"=r" (loops):"0"(loops)); |
| int cleanup_before_linux (void) |
| * this function is called just before we call linux |
| * it prepares the processor for linux |
| * we turn off caches etc ... |
| static void cache_flush (void) |
| #if !(CONFIG_IS_ENABLED(SYS_ICACHE_OFF) && CONFIG_IS_ENABLED(SYS_DCACHE_OFF)) |
| asm ("mcr p15, 0, %0, c7, c7, 0": :"r" (i)); |