diff options
| author | Gabor Juhos <juhosg@openwrt.org> | 2011-01-04 21:28:14 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2011-01-18 19:30:24 +0100 |
| commit | d4a67d9dc8a5a80c4ec1814791af8c0252c158b8 (patch) | |
| tree | 28c9797f2ec5bf46325e1d5dd7db675ac0ac6713 /arch/mips/include/asm/mach-ath79/kernel-entry-init.h | |
| parent | 94bb0c1ab293c298a8852e4f10c4215bad6daa9b (diff) | |
| download | linux-d4a67d9dc8a5a80c4ec1814791af8c0252c158b8.tar.bz2 | |
MIPS: Add initial support for the Atheros AR71XX/AR724X/AR931X SoCs
This patch adds initial support for various Atheros SoCs based on the
MIPS 24Kc core. The following models are supported at the moment:
- AR7130
- AR7141
- AR7161
- AR9130
- AR9132
- AR7240
- AR7241
- AR7242
The current patch contains minimal support only, but the resulting
kernel can boot into user-space with using of an initramfs image on
various boards which are using these SoCs. Support for more built-in
devices and individual boards will be implemented in further patches.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: Luis R. Rodriguez <lrodriguez@atheros.com>
Cc: Cliff Holden <Cliff.Holden@Atheros.com>
Cc: Kathy Giori <Kathy.Giori@Atheros.com>
Patchwork: https://patchwork.linux-mips.org/patch/1947/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm/mach-ath79/kernel-entry-init.h')
| -rw-r--r-- | arch/mips/include/asm/mach-ath79/kernel-entry-init.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mach-ath79/kernel-entry-init.h b/arch/mips/include/asm/mach-ath79/kernel-entry-init.h new file mode 100644 index 000000000000..d8d046bccc8e --- /dev/null +++ b/arch/mips/include/asm/mach-ath79/kernel-entry-init.h @@ -0,0 +1,32 @@ +/* + * Atheros AR71XX/AR724X/AR913X 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_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 */ |