diff options
| -rw-r--r-- | target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/kernel-entry-init.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/kernel-entry-init.h b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/kernel-entry-init.h new file mode 100644 index 0000000000..948d28034c --- /dev/null +++ b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/kernel-entry-init.h @@ -0,0 +1,32 @@ +/* + * Atheros AR71xx specific kernel entry setup + * + * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + */ +#ifndef __ASM_MACH_AR71XX_KERNEL_ENTRY_H +#define __ASM_MACH_AR71XX_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_AR71XX_KERNEL_ENTRY_H */ |