| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * Atheros AR71XX/AR724X/AR913X specific kernel entry setup |
| * |
| * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org> |
| */ |
| #ifndef __ASM_MACH_ATH79_KERNEL_ENTRY_H |
| #define __ASM_MACH_ATH79_KERNEL_ENTRY_H |
| |
| /* |
| * Some bootloaders set the 'Kseg0 coherency algorithm' to |
| * 'Cacheable, noncoherent, write-through, no write allocate' |
| * and this cause performance issues. Let's go and change it to |
| * 'Cacheable, noncoherent, write-back, write allocate' |
| */ |
| .macro kernel_entry_setup |
| mfc0 t0, CP0_CONFIG |
| li t1, ~CONF_CM_CMASK |
| and t0, t1 |
| ori t0, CONF_CM_CACHABLE_NONCOHERENT |
| mtc0 t0, CP0_CONFIG |
| nop |
| .endm |
| |
| .macro smp_slave_setup |
| .endm |
| |
| #endif /* __ASM_MACH_ATH79_KERNEL_ENTRY_H */ |
