[PATCH V2 3/4] ARM: Xilinx: base header files and assembly macros
From: John Linn
Date: Wed Feb 09 2011 - 12:01:02 EST
These are the minimum needed to build the kernel for the new platform.
Signed-off-by: John Linn <john.linn@xxxxxxxxxx>
---
V2 Changes
Updates based on Russell King's comments
moved to using entry-macro-gic.S
moved stuff from hardware.h to xilinx_soc.h
added IOMEM() in io.h to help with typing
Minor updates to IO_SPACE_LIMIT and __io()
Updated addresses to be clear with seperate virtual
and physical addresses
arch/arm/mach-xilinx/include/mach/clkdev.h | 33 ++++++++++++++++
arch/arm/mach-xilinx/include/mach/debug-macro.S | 36 ++++++++++++++++++
arch/arm/mach-xilinx/include/mach/entry-macro.S | 29 ++++++++++++++
arch/arm/mach-xilinx/include/mach/hardware.h | 18 +++++++++
arch/arm/mach-xilinx/include/mach/io.h | 33 ++++++++++++++++
arch/arm/mach-xilinx/include/mach/irqs.h | 28 ++++++++++++++
arch/arm/mach-xilinx/include/mach/memory.h | 23 +++++++++++
arch/arm/mach-xilinx/include/mach/system.h | 28 ++++++++++++++
arch/arm/mach-xilinx/include/mach/timex.h | 24 ++++++++++++
arch/arm/mach-xilinx/include/mach/uart.h | 30 +++++++++++++++
arch/arm/mach-xilinx/include/mach/uncompress.h | 46 +++++++++++++++++++++++
arch/arm/mach-xilinx/include/mach/vmalloc.h | 20 ++++++++++
arch/arm/mach-xilinx/include/mach/xilinx_soc.h | 46 +++++++++++++++++++++++
13 files changed, 394 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-xilinx/include/mach/clkdev.h
create mode 100644 arch/arm/mach-xilinx/include/mach/debug-macro.S
create mode 100644 arch/arm/mach-xilinx/include/mach/entry-macro.S
create mode 100644 arch/arm/mach-xilinx/include/mach/hardware.h
create mode 100644 arch/arm/mach-xilinx/include/mach/io.h
create mode 100644 arch/arm/mach-xilinx/include/mach/irqs.h
create mode 100644 arch/arm/mach-xilinx/include/mach/memory.h
create mode 100644 arch/arm/mach-xilinx/include/mach/system.h
create mode 100644 arch/arm/mach-xilinx/include/mach/timex.h
create mode 100644 arch/arm/mach-xilinx/include/mach/uart.h
create mode 100644 arch/arm/mach-xilinx/include/mach/uncompress.h
create mode 100644 arch/arm/mach-xilinx/include/mach/vmalloc.h
create mode 100644 arch/arm/mach-xilinx/include/mach/xilinx_soc.h
diff --git a/arch/arm/mach-xilinx/include/mach/clkdev.h b/arch/arm/mach-xilinx/include/mach/clkdev.h
new file mode 100644
index 0000000..5dd1453
--- /dev/null
+++ b/arch/arm/mach-xilinx/include/mach/clkdev.h
@@ -0,0 +1,33 @@
+/*
+ * arch/arm/mach-xilinx/include/mach/clkdev.h
+ *
+ * Copyright (C) 2011 Xilinx, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ *
+ */
+
+#ifndef __MACH_CLKDEV_H__
+#define __MACH_CLKDEV_H__
+
+struct clk {
+ unsigned long rate;
+};
+
+static inline int __clk_get(struct clk *clk)
+{
+ return 1;
+}
+
+static inline void __clk_put(struct clk *clk)
+{
+}
+
+#endif
diff --git a/arch/arm/mach-xilinx/include/mach/debug-macro.S b/arch/arm/mach-xilinx/include/mach/debug-macro.S
new file mode 100644
index 0000000..1aa227f
--- /dev/null
+++ b/arch/arm/mach-xilinx/include/mach/debug-macro.S
@@ -0,0 +1,36 @@
+/* arch/arm/mach-xilinx/include/mach/debug-macro.S
+ *
+ * Debugging macro include header
+ *
+ * Copyright (C) 2011 Xilinx
+ *
+ * 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.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <mach/xilinx_soc.h>
+#include <mach/uart.h>
+
+ .macro addruart, rp, rv
+ ldr \rp, =LL_UART_PADDR @ physical
+ ldr \rv, =LL_UART_VADDR @ virtual
+ .endm
+
+ .macro senduart,rd,rx
+ str \rd, [\rx, #UART_FIFO_OFFSET] @ TXDATA
+ .endm
+
+ .macro waituart,rd,rx
+ .endm
+
+ .macro busyuart,rd,rx
+1002: ldr \rd, [\rx, #UART_SR_OFFSET] @ get status register
+ tst \rd, #UART_SR_TXFULL @
+ bne 1002b @ wait if FIFO is full
+ .endm
diff --git a/arch/arm/mach-xilinx/include/mach/entry-macro.S b/arch/arm/mach-xilinx/include/mach/entry-macro.S
new file mode 100644
index 0000000..325bc3f
--- /dev/null
+++ b/arch/arm/mach-xilinx/include/mach/entry-macro.S
@@ -0,0 +1,29 @@
+/*
+ * arch/arm/mach-xilinx/include/mach/entry-macro.S
+ *
+ * Low-level IRQ helper macros
+ *
+ * Copyright (C) 2011 Xilinx
+ *
+ * based on arch/plat-mxc/include/mach/entry-macro.S
+ *
+ * Copyright (C) 2007 Lennert Buytenhek <buytenh@xxxxxxxxxxxxxx>
+ * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * 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.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <mach/hardware.h>
+#include <asm/hardware/entry-macro-gic.S>
+
+ .macro disable_fiq
+ .endm
+
+ .macro arch_ret_to_user, tmp1, tmp2
+ .endm
diff --git a/arch/arm/mach-xilinx/include/mach/hardware.h b/arch/arm/mach-xilinx/include/mach/hardware.h
new file mode 100644
index 0000000..195dd2c
--- /dev/null
+++ b/arch/arm/mach-xilinx/include/mach/hardware.h
@@ -0,0 +1,18 @@
+/* arch/arm/mach-xilinx/include/mach/hardware.h
+ *
+ * Copyright (C) 2011 Xilinx
+ *
+ * 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.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __MACH_HARDWARE_H__
+#define __MACH_HARDWARE_H__
+
+#endif
diff --git a/arch/arm/mach-xilinx/include/mach/io.h b/arch/arm/mach-xilinx/include/mach/io.h
new file mode 100644
index 0000000..bc90a55
--- /dev/null
+++ b/arch/arm/mach-xilinx/include/mach/io.h
@@ -0,0 +1,33 @@
+/* arch/arm/mach-xilinx/include/mach/io.h
+ *
+ * Copyright (C) 2011 Xilinx
+ *
+ * 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.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __MACH_IO_H__
+#define __MACH_IO_H__
+
+/* Allow IO space to be anywhere in the memory */
+
+#define IO_SPACE_LIMIT 0xffff
+
+/* IO address mapping macros, nothing special at this time but required */
+
+#ifdef __ASSEMBLER__
+#define IOMEM(x) (x)
+#else
+#define IOMEM(x) ((void __force __iomem *)(x))
+#endif
+
+#define __io(a) __typesafe_io(a)
+#define __mem_pci(a) (a)
+
+#endif
diff --git a/arch/arm/mach-xilinx/include/mach/irqs.h b/arch/arm/mach-xilinx/include/mach/irqs.h
new file mode 100644
index 0000000..da2fadc
--- /dev/null
+++ b/arch/arm/mach-xilinx/include/mach/irqs.h
@@ -0,0 +1,28 @@
+/* arch/arm/mach-xilinx/include/mach/irqs.h
+ *
+ * Copyright (C) 2011 Xilinx
+ *
+ * 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.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#ifndef __MACH_IRQS_H
+#define __MACH_IRQS_H
+
+#define ARCH_NR_GPIOS 118
+#define NR_IRQS (128 + ARCH_NR_GPIOS)
+
+/*
+ * GIC Interrupts
+ */
+
+#define IRQ_GIC_SPI_START 32
+#define IRQ_TIMERCOUNTER0 42
+#define IRQ_UART0 59
+
+#endif
diff --git a/arch/arm/mach-xilinx/include/mach/memory.h b/arch/arm/mach-xilinx/include/mach/memory.h
new file mode 100644
index 0000000..2b6d1eb
--- /dev/null
+++ b/arch/arm/mach-xilinx/include/mach/memory.h
@@ -0,0 +1,23 @@
+/* arch/arm/mach-xilinx/include/mach/memory.h
+ *
+ * Copyright (C) 2011 Xilinx
+ *
+ * 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.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __MACH_MEMORY_H__
+#define __MACH_MEMORY_H__
+
+#include <mach/hardware.h>
+
+#define PHYS_OFFSET 0x0
+#define MEM_SIZE SZ_256M
+
+#endif
diff --git a/arch/arm/mach-xilinx/include/mach/system.h b/arch/arm/mach-xilinx/include/mach/system.h
new file mode 100644
index 0000000..a5f1f0f
--- /dev/null
+++ b/arch/arm/mach-xilinx/include/mach/system.h
@@ -0,0 +1,28 @@
+/* arch/arm/mach-xilinx/include/mach/system.h
+ *
+ * Copyright (C) 2011 Xilinx
+ *
+ * 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.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __MACH_SYSTEM_H__
+#define __MACH_SYSTEM_H__
+
+static inline void arch_idle(void)
+{
+ cpu_do_idle();
+}
+
+static inline void arch_reset(char mode, const char *cmd)
+{
+ /* Add architecture specific reset processing here */
+}
+
+#endif
diff --git a/arch/arm/mach-xilinx/include/mach/timex.h b/arch/arm/mach-xilinx/include/mach/timex.h
new file mode 100644
index 0000000..2946c35
--- /dev/null
+++ b/arch/arm/mach-xilinx/include/mach/timex.h
@@ -0,0 +1,24 @@
+/* arch/arm/mach-xilinx/include/mach/timex.h
+ *
+ * Copyright (C) 2011 Xilinx
+ *
+ * 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.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __MACH_TIMEX_H__
+#define __MACH_TIMEX_H__
+
+#include <mach/hardware.h>
+
+#define PERIPHERAL_CLOCK_RATE 2500000
+
+#define CLOCK_TICK_RATE (PERIPHERAL_CLOCK_RATE / 32)
+
+#endif
diff --git a/arch/arm/mach-xilinx/include/mach/uart.h b/arch/arm/mach-xilinx/include/mach/uart.h
new file mode 100644
index 0000000..2601143
--- /dev/null
+++ b/arch/arm/mach-xilinx/include/mach/uart.h
@@ -0,0 +1,30 @@
+/* arch/arm/mach-xilinx/include/mach/uart.h
+ *
+ * Copyright (C) 2011 Xilinx
+ *
+ * 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.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#ifndef __MACH_UART_H__
+#define __MACH_UART_H__
+
+#define UART_CR_OFFSET 0x00 /* Control Register [8:0] */
+#define UART_SR_OFFSET 0x2C /* Channel Status [11:0] */
+#define UART_FIFO_OFFSET 0x30 /* FIFO [15:0] or [7:0] */
+
+#define UART_SR_TXFULL 0x00000010 /* TX FIFO full */
+#define UART_SR_TXEMPTY 0x00000008 /* TX FIFO empty */
+
+#define UART_FIFO_WRITE(base, value) \
+ (*(volatile unsigned int *)((base) + UART_FIFO_OFFSET) = (value))
+
+#define UART_STATUS(base) \
+ (*(volatile unsigned int *)((base) + UART_SR_OFFSET))
+
+#endif
diff --git a/arch/arm/mach-xilinx/include/mach/uncompress.h b/arch/arm/mach-xilinx/include/mach/uncompress.h
new file mode 100644
index 0000000..7b9f4c3
--- /dev/null
+++ b/arch/arm/mach-xilinx/include/mach/uncompress.h
@@ -0,0 +1,46 @@
+/* arch/arm/mach-xilinx/include/mach/uncompress.h
+ *
+ * Copyright (C) 2011 Xilinx
+ *
+ * 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.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#ifndef __MACH_UNCOMPRESS_H__
+#define __MACH_UNCOMPRESS_H__
+
+#include <mach/xilinx_soc.h>
+#include <mach/uart.h>
+
+void arch_decomp_setup(void)
+{
+}
+
+static inline void flush(void)
+{
+ /*
+ * Wait while the FIFO is not empty
+ */
+ while (!(UART_STATUS(LL_UART_PADDR) & UART_SR_TXEMPTY))
+ ;
+}
+
+#define arch_decomp_wdog()
+
+static void putc(char ch)
+{
+ /*
+ * Wait for room in the FIFO, then write the char into the FIFO
+ */
+ while (UART_STATUS(LL_UART_PADDR) & UART_SR_TXFULL)
+ ;
+
+ UART_FIFO_WRITE(LL_UART_PADDR, ch);
+}
+
+#endif
diff --git a/arch/arm/mach-xilinx/include/mach/vmalloc.h b/arch/arm/mach-xilinx/include/mach/vmalloc.h
new file mode 100644
index 0000000..62e2408
--- /dev/null
+++ b/arch/arm/mach-xilinx/include/mach/vmalloc.h
@@ -0,0 +1,20 @@
+/* arch/arm/mach-xilinx/include/mach/vmalloc.h
+ *
+ * Copyright (C) 2011 Xilinx
+ *
+ * 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.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __MACH_VMALLOC_H__
+#define __MACH_VMALLOC_H__
+
+#define VMALLOC_END 0xE0000000
+
+#endif
diff --git a/arch/arm/mach-xilinx/include/mach/xilinx_soc.h b/arch/arm/mach-xilinx/include/mach/xilinx_soc.h
new file mode 100644
index 0000000..aa7cab5
--- /dev/null
+++ b/arch/arm/mach-xilinx/include/mach/xilinx_soc.h
@@ -0,0 +1,46 @@
+/* arch/arm/mach-xilinx/include/mach/xilinx_soc.h
+ *
+ * Copyright (C) 2011 Xilinx
+ *
+ * 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.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __MACH_XILINX_SOC_H__
+#define __MACH_XILINX_SOC_H__
+
+/* For now, all mappings are flat (physical = virtual)
+ */
+#define UART0_PHYS 0xE0000000
+#define UART0_VIRT UART0_PHYS
+
+#define TTC0_PHYS 0xF8001000
+#define TTC0_VIRT TTC0_PHYS
+
+#define PL310_L2CC_PHYS 0xF8F02000
+#define PL310_L2CC_VIRT PL310_L2CC_PHYS
+
+#define SCU_PERIPH_PHYS 0xF8F00000
+#define SCU_PERIPH_VIRT SCU_PERIPH_PHYS
+
+/* The following are intended for the devices that are mapped early */
+
+#define TTC0_BASE IOMEM(TTC0_VIRT)
+#define SCU_PERIPH_BASE IOMEM(SCU_PERIPH_VIRT)
+#define SCU_GIC_CPU_BASE (SCU_PERIPH_BASE + 0x100)
+#define SCU_GIC_DIST_BASE (SCU_PERIPH_BASE + 0x1000)
+#define PL310_L2CC_BASE IOMEM(PL310_L2CC_VIRT)
+
+/*
+ * Mandatory for CONFIG_LL_DEBUG, UART is mapped virtual = physical
+ */
+#define LL_UART_PADDR UART0_PHYS
+#define LL_UART_VADDR UART0_VIRT
+
+#endif
--
1.6.2.1
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