[PATCH 4/4] ARM: Xilinx: base header files and assembly macros
John Linn
john.linn at xilinx.com
Sat Feb 5 11:17:17 EST 2011
These are the minimum needed to build the kernel for the new platform.
Signed-off-by: John Linn <john.linn at xilinx.com>
---
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 | 87 +++++++++++++++++++++++
arch/arm/mach-xilinx/include/mach/hardware.h | 44 ++++++++++++
arch/arm/mach-xilinx/include/mach/io.h | 27 +++++++
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 | 22 ++++++
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 +++++
12 files changed, 424 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
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..db16b13
--- /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/hardware.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..becb4cd
--- /dev/null
+++ b/arch/arm/mach-xilinx/include/mach/entry-macro.S
@@ -0,0 +1,87 @@
+/*
+ * 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 at wantstofly.org>
+ * 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/gic.h>
+
+ .macro disable_fiq
+ .endm
+
+ .macro get_irqnr_preamble, base, tmp
+ ldr \base, =gic_cpu_base_addr
+ ldr \base, [\base]
+ .endm
+
+ .macro arch_ret_to_user, tmp1, tmp2
+ .endm
+
+ /*
+ * The interrupt numbering scheme is defined in the
+ * interrupt controller spec.
+ *
+ * Interrupts 0-15 are SFI and are filtered
+ * Interrupts 31-1019 are normal and should be processed
+ * 1020-1021 are reserved and are filtered
+ * 1022 is not needed and filtered
+ * 1023 is "spurious" (no interrupt) and is filtered
+ *
+ * A simple read from the controller will tell us the number
+ * of the highest priority enabled interrupt. We then just
+ * need to check whether it is in the valid range for an IRQ
+ * (16-1019 inclusive). If a valid interrupt, Z = 0 on return.
+ */
+
+ .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
+
+ /* bits 12-10 = src CPU, 9-0 = int # */
+
+ ldr \irqstat, [\base, #GIC_CPU_INTACK]
+ ldr \tmp, =1020
+
+ bic \irqnr, \irqstat, #0x1c00
+
+ cmp \irqnr, #31
+ cmpcc \irqnr, \irqnr
+ cmpne \irqnr, \tmp
+ cmpcs \irqnr, \irqnr
+
+ .endm
+
+ .macro test_for_ipi, irqnr, irqstat, base, tmp
+ bic \irqnr, \irqstat, #0x1c00
+ cmp \irqnr, #16
+ it cc
+ strcc \irqstat, [\base, #GIC_CPU_EOI]
+ it cs
+ cmpcs \irqnr, \irqnr
+ .endm
+
+ /* As above, this assumes irqstat and base are preserved */
+
+ .macro test_for_ltirq, irqnr, irqstat, base, tmp
+ bic \irqnr, \irqstat, #0x1c00
+ mov \tmp, #0
+ cmp \irqnr, #29
+ itt eq
+ moveq \tmp, #1
+ streq \irqstat, [\base, #GIC_CPU_EOI]
+ cmp \tmp, #0
+ .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..a635322
--- /dev/null
+++ b/arch/arm/mach-xilinx/include/mach/hardware.h
@@ -0,0 +1,44 @@
+/* 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__
+
+#include <mach/memory.h>
+#include <mach/irqs.h>
+
+#define PERIPHERAL_CLOCK_RATE 2500000
+
+#define IO_BASE 0xE0000000
+#define UART0_BASE (IO_BASE)
+
+#define PERIPH_BASE 0xF8000000
+#define TTC0_BASE (PERIPH_BASE + 0x1000)
+
+#define SCU_PERIPH_BASE 0xF8F00000
+#define SCU_GIC_CPU_BASE (SCU_PERIPH_BASE + 0x100)
+#define SCU_GLOBAL_TIMER_BASE (SCU_PERIPH_BASE + 0x200)
+#define SCU_CPU_TIMER_BASE (SCU_PERIPH_BASE + 0x600)
+#define SCU_WDT_BASE (SCU_PERIPH_BASE + 0x620)
+#define SCU_GIC_DIST_BASE (SCU_PERIPH_BASE + 0x1000)
+
+#define PL310_L2CC_BASE 0xF8F02000
+
+/*
+ * Mandatory for CONFIG_LL_DEBUG, UART is mapped virtual = physical
+ */
+#define LL_UART_PADDR UART0_BASE
+#define LL_UART_VADDR UART0_BASE
+
+#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..2e69db7
--- /dev/null
+++ b/arch/arm/mach-xilinx/include/mach/io.h
@@ -0,0 +1,27 @@
+/* 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 0xffffffff
+
+/* IO address mapping macros, nothing special at this time but required */
+
+#define __io(a) ((void __iomem *)(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..0c1d292
--- /dev/null
+++ b/arch/arm/mach-xilinx/include/mach/timex.h
@@ -0,0 +1,22 @@
+/* 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 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..3a4aef7
--- /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/hardware.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..b70ff29
--- /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 IO_BASE
+
+#endif
--
1.6.2.1
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