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>

1 files changed, 15 insertions, 0 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 954304068228..e0215d93df82 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -66,6 +66,20 @@ config AR7
           Support for the Texas Instruments AR7 System-on-a-Chip
           family: TNETD7100, 7200 and 7300.
 
+config ATH79
+        bool "Atheros AR71XX/AR724X/AR913X based boards"
+        select BOOT_RAW
+        select CEVT_R4K
+        select CSRC_R4K
+        select DMA_NONCOHERENT
+        select IRQ_CPU
+        select SYS_HAS_CPU_MIPS32_R2
+        select SYS_HAS_EARLY_PRINTK
+        select SYS_SUPPORTS_32BIT_KERNEL
+        select SYS_SUPPORTS_BIG_ENDIAN
+        help
+          Support for the Atheros AR71XX/AR724X/AR913X SoCs.
+
 config BCM47XX
         bool "Broadcom BCM47XX based boards"
         select CEVT_R4K
@@ -718,6 +732,7 @@ config CAVIUM_OCTEON_REFERENCE_BOARD
 endchoice
 
 source "arch/mips/alchemy/Kconfig"
+source "arch/mips/ath79/Kconfig"
 source "arch/mips/bcm63xx/Kconfig"
 source "arch/mips/jazz/Kconfig"
 source "arch/mips/jz4740/Kconfig"