[U-Boot] nds32: add amic multicore interrupt controller support

diff --git a/include/andestech/amic.h b/include/andestech/amic.h
new file mode 100644
index 0000000..52d95ca
--- /dev/null
+++ b/include/andestech/amic.h
@@ -0,0 +1,195 @@ 
+/*
+ * (C) Copyright 2012 Andes Technology Corp
+ * Macpaul Lin <macpaul@andestech.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * Andes Multi-Core Interrupt Controller
+ */
+#ifndef __ANDES_AMIC_H
+#define __ANDES_AMIC_H
+
+#ifndef __ASSEMBLY__
+
+struct amic {
+	unsigned int	intconfig;	/* 0x00 - Hardware Configuration */
+	unsigned int	cpudc;		/* 0x04 - CPU owner DC reg */
+	unsigned int	cpuid1;		/* 0x08 - CPU owner ID reg 1 */
+	unsigned int	cpuid2;		/* 0x0c - CPU owner ID reg 2 */
+	unsigned int	rsvd0[4];	/* 0x10-0x1c - Reserved */
+	unsigned int	intrigmode;	/* 0x20 - Interrupt Trigger Mode */
+	unsigned int	intriglevel;	/* 0x24 - Interrupt Trigger Level */
+	unsigned int	intsrc;		/* 0x28 - Interrupt Source reg */
+	unsigned int	rsvd1[5];	/* 0x2c-0x3c - Reserved */
+	unsigned int	ipitrg;		/* 0x40 - IPI trigger reg */
+	unsigned int	ipista;		/* 0x44 - IPI status/clear reg */
+	unsigned int	ipipl;		/* 0x48 - IPI priority level reg */
+	unsigned int	ipigsta;	/* 0x4c - IPI global status/clear reg */
+	unsigned int	ipigpt;		/* 0x50 - IPI global priority reg */
+	unsigned int	rsvd2[11];	/* 0x54-0x7c - Reserved */
+	unsigned int	inten;		/* 0x80 - Interrupt enable reg */
+	unsigned int	intgsta;	/* 0x84 - Interrupt status/clear reg */
+	unsigned int	inthw0sta;	/* 0x88 - IVIC HW0 int status/clear */
+	unsigned int	inthw1sta;	/* 0x8c - IVIC HW1 int status/clear */
+	unsigned int	inthw2sta;	/* 0x90 - IVIC HW2 int status/clear */
+	unsigned int	inthw3sta;	/* 0x94 - IVIC HW3 int status/clear */
+	unsigned int	inthw4sta;	/* 0x98 - IVIC HW4 int status/clear */
+	unsigned int	inthw5sta;	/* 0x9c - IVIC HW5 int status/clear */
+	unsigned int	iplcr0;		/* 0xa0 - Int priority level0 0-7) */
+	unsigned int	iplcr1;		/* 0xa4 - Int priority level1 8-15 */
+	unsigned int	iplcr2;		/* 0xa8 - Int priority level2 16-23 */
+	unsigned int	iplcr3;		/* 0xac - Int priority level3 24-31 */
+};
+#endif /* __ASSEMBLY__ */
+
+/*
+ * 0x00 - Configuration Register (ro)
+ */
+#define ANDES_AMIC_CPU_CNT(x)		(((x) & 0x7) > 0)
+#define ANDES_AMIC_PLVL			(1 << 4)
+#define ANDES_AMIC_IPI32		(1 << 5)
+#define ANDES_AMIC_EM0			(1 << 8)
+#define ANDES_AMIC_EM1			(1 << 9)
+#define ANDES_AMIC_EM2			(1 << 10)
+#define ANDES_AMIC_EM3			(1 << 11)
+#define ANDES_AMIC_VER(x)		(((x) & 0xffff0000) > 16)
+
+/*
+ * 0x04 - CPU owner DC register
+ */
+#define ANDES_AMIC_CPUDC(x)		((x) & 0xffffffff)
+
+/*
+ * 0x08 - CPU owner ID register 1
+ */
+#define ANDES_AMIC_CPUID1(x)		(((x) & 0x0000ffff) > 0)
+
+/*
+ * 0x0c - CPU owner ID register 2
+ */
+#define ANDES_AMIC_CPUID2(x)		(((x) & 0xffff0000) > 16)
+
+/*
+ * 0x20 - Interrupt Trigger Mode Register
+ * 0: level trigger, 1: edge trigger
+ */
+#define ANDES_AMIC_INTRIGMODE(x)	(1 << (x))
+
+/*
+ * 0x24 - Interrupt Trigger Level Register
+ * 0: Active-high/rising edge, 1: Active-low/falling edge
+ */
+#define ANDES_AMIC_INTRIGLEVEL(x)	(1 << (x))
+
+/*
+ * 0x28 - Interrupt Source Register
+ */
+#define ANDES_AMIC_INTRSRC(x)		(1 << (x))
+
+/*
+ * 0x040 - IPI Trigger Register
+ */
+#define ANDES_AMIC_IPITRG_CX0		(1 << 0)
+#define ANDES_AMIC_IPITRG_CX1		(1 << 1)
+#define ANDES_AMIC_IPITRG_CX2		(1 << 2)
+#define ANDES_AMIC_IPITRG_CX3		(1 << 3)
+
+/*
+ * 0x044 - IPI Status/Clear register
+ */
+#define ANDES_AMIC_IPISTA_CX0		(1 << 0)
+#define ANDES_AMIC_IPISTA_CX1		(1 << 1)
+#define ANDES_AMIC_IPISTA_CX2		(1 << 2)
+#define ANDES_AMIC_IPISTA_CX3		(1 << 3)
+
+/*
+ * 0x48 - IPI Priority Level register
+ */
+#define ANDES_AMIC_IPIPL(x)		(((x) & 0x7) << 0)
+
+/*
+ * 0x04c - IPI Global Status/Clear register
+ * Read: indicate all Inter-Processor Interrupt (IPI) status.
+ *	The name of each bit is "C<source><target>"
+ *	and the meaning is "CPU<source> call CPU<target>"
+ * Write : Any CPU can write 1 to clear any one bit of ipigsta
+ *	to make that the "CPU<source> call CPU <target>" event
+ *	have been serviced.
+ */
+#define ANDES_AMIC_IPIGSTA_C00		(1 << 0)
+#define ANDES_AMIC_IPIGSTA_C10		(1 << 1)
+#define ANDES_AMIC_IPIGSTA_C20		(1 << 2)
+#define ANDES_AMIC_IPIGSTA_C30		(1 << 3)
+#define ANDES_AMIC_IPIGSTA_C01		(1 << 4)
+#define ANDES_AMIC_IPIGSTA_C11		(1 << 5)
+#define ANDES_AMIC_IPIGSTA_C21		(1 << 6)
+#define ANDES_AMIC_IPIGSTA_C31		(1 << 7)
+#define ANDES_AMIC_IPIGSTA_C02		(1 << 8)
+#define ANDES_AMIC_IPIGSTA_C12		(1 << 9)
+#define ANDES_AMIC_IPIGSTA_C22		(1 << 10)
+#define ANDES_AMIC_IPIGSTA_C32		(1 << 11)
+#define ANDES_AMIC_IPIGSTA_C03		(1 << 12)
+#define ANDES_AMIC_IPIGSTA_C13		(1 << 13)
+#define ANDES_AMIC_IPIGSTA_C23		(1 << 14)
+#define ANDES_AMIC_IPIGSTA_C33		(1 << 15)
+
+/*
+ * 0x050 - IPI Global Priority Register
+ */
+#define ANDES_AMIC_IPIGPT_C0PT(x)	(((x) & 0x7) << 0)
+#define ANDES_AMIC_IPIGPT_C1PT(x)	(((x) & 0x7) << 4)
+#define ANDES_AMIC_IPIGPT_C2PT(x)	(((x) & 0x7) << 8)
+#define ANDES_AMIC_IPIGPT_C3PT(x)	(((x) & 0x7) << 12)
+
+/*
+ * 0x80 - Interrupt Enable Register
+ */
+#define ANDES_AMIC_INTEN(x)		(1 << (x))
+
+/*
+ * 0x84 - Interrupt Enable Register
+ */
+#define ANDES_AMIC_GSTA(x)		(1 << (x))
+
+/*
+ * 0x88-0x9c - IVIC HW0~HW5 Status Register
+ * Read: Shows the priority level corresponding HW0-5 status of
+ *	the CPU ID owner interrupts after masking by the enable registers.
+ *	A HIGH bit indicates that the appropriate interrupt request is
+ *	active after masking.
+ * Write: A HIGH bit clears the corresponding bit in the intsrcreg which
+ *	is edge trigger mode. A LOW bit has no effect.
+ */
+#define ANDES_AMIC_HWSTA(x)		(1 << (x))
+
+/*
+ * 0xA0-0xAC - Interrupt priority level configuration registers
+ *
+ * 0xA0: 0~7, 0xA4: 8~15, 0xA8: 16~23, 0xAC: 24~31
+ * Each interrupt input can be configured the priority level from
+ * level 0(max.) to level 7(min.).
+ */
+#define ANDES_AMIC_IPLCR_HW0(x)		(((x) & 0x7) << 0)
+#define ANDES_AMIC_IPLCR_HW1(x)		(((x) & 0x7) << 4)
+#define ANDES_AMIC_IPLCR_HW2(x)		(((x) & 0x7) << 8)
+#define ANDES_AMIC_IPLCR_HW3(x)		(((x) & 0x7) << 12)
+#define ANDES_AMIC_IPLCR_HW4(x)		(((x) & 0x7) << 16)
+#define ANDES_AMIC_IPLCR_HW5(x)		(((x) & 0x7) << 20)
+#define ANDES_AMIC_IPLCR_HW6(x)		(((x) & 0x7) << 24)
+#define ANDES_AMIC_IPLCR_HW7(x)		(((x) & 0x7) << 28)
+
+#endif	/* __ANDES_PCU_H */