[ARM] basic support for the Marvell Orion SoC family

The Marvell Orion is a family of ARM SoCs with a DDR/DDR2 memory
controller, 10/100/1000 ethernet MAC, and USB 2.0 interfaces,
and, depending on the specific model, PCI-E interface, PCI-X
interface, SATA controllers, crypto unit, SPI interface, SDIO
interface, device bus, NAND controller, DMA engine and/or XOR
engine.

This contains the basic structure and architecture register definitions.

Signed-off-by: Tzachi Perelstein <tzachi@marvell.com>
Reviewed-by: Nicolas Pitre <nico@marvell.com>
Reviewed-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 31 insertions, 0 deletions

diff --git a/include/asm-arm/arch-orion/entry-macro.S b/include/asm-arm/arch-orion/entry-macro.S
new file mode 100644
index 000000000000..b76075a7e44b
--- /dev/null
+++ b/include/asm-arm/arch-orion/entry-macro.S
@@ -0,0 +1,31 @@
+/*
+ * include/asm-arm/arch-orion/entry-macro.S
+ *
+ * Low-level IRQ helper macros for Orion platforms
+ *
+ * This file is licensed under  the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <asm/arch/orion.h>
+
+        .macro  disable_fiq
+        .endm
+
+        .macro  arch_ret_to_user, tmp1, tmp2
+        .endm
+
+        .macro  get_irqnr_preamble, base, tmp
+        ldr     \base, =MAIN_IRQ_CAUSE
+        .endm
+
+        .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
+        ldr     \irqstat, [\base, #0]           @ main cause
+        ldr     \tmp, [\base, #(MAIN_IRQ_MASK - MAIN_IRQ_CAUSE)] @ main mask
+        mov     \irqnr, #0                      @ default irqnr
+        @ find cause bits that are unmasked
+        ands    \irqstat, \irqstat, \tmp        @ clear Z flag if any
+        clzne   \irqnr, \irqstat                @ calc irqnr
+        rsbne   \irqnr, \irqnr, #31
+        .endm