[PATCH 3/3] ARM: zynq: add support for ARCH_MULTIPLATFORM
Josh Cartwright
josh.cartwright at ni.com
Mon Nov 19 12:38:29 EST 2012
The majority of changes are necessary to remove dependencies on header
files within arch/arm/mach-zynq/include/mach:
uncompress.h
- Deleted. It is unused for ARCH_MULTIPLATFORM builds.
uart.h:
- Move uart definitions out of uart.h into debug/zynq.S, which is
now the only user
zynq_soc.h:
- Move SCU address definitions into common.c.
- Other #defines, such as PERIPHERAL_CLOCK_RATE, TTC0_BASE, etc, are
unused and can be dropped
Signed-off-by: Josh Cartwright <josh.cartwright at ni.com>
---
arch/arm/Kconfig | 14 ++------
arch/arm/include/debug/zynq.S | 20 +++++++++--
arch/arm/mach-zynq/Kconfig | 13 +++++++
arch/arm/mach-zynq/common.c | 8 ++---
arch/arm/mach-zynq/include/mach/uart.h | 25 --------------
arch/arm/mach-zynq/include/mach/uncompress.h | 51 ----------------------------
arch/arm/mach-zynq/include/mach/zynq_soc.h | 49 --------------------------
7 files changed, 37 insertions(+), 143 deletions(-)
create mode 100644 arch/arm/mach-zynq/Kconfig
delete mode 100644 arch/arm/mach-zynq/include/mach/uart.h
delete mode 100644 arch/arm/mach-zynq/include/mach/uncompress.h
delete mode 100644 arch/arm/mach-zynq/include/mach/zynq_soc.h
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index ccfe0ab..28a2048 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -955,18 +955,6 @@ config ARCH_VT8500
help
Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.
-config ARCH_ZYNQ
- bool "Xilinx Zynq ARM Cortex A9 Platform"
- select ARM_AMBA
- select ARM_GIC
- select COMMON_CLK
- select CPU_V7
- select GENERIC_CLOCKEVENTS
- select ICST
- select MIGHT_HAVE_CACHE_L2X0
- select USE_OF
- help
- Support for Xilinx Zynq ARM Cortex A9 Platform
endchoice
menu "Multiple platform selection"
@@ -1128,6 +1116,8 @@ source "arch/arm/plat-versatile/Kconfig"
source "arch/arm/mach-w90x900/Kconfig"
+source "arch/arm/mach-zynq/Kconfig"
+
# Definitions to make life easier
config ARCH_ACORN
bool
diff --git a/arch/arm/include/debug/zynq.S b/arch/arm/include/debug/zynq.S
index 08aed97..f9aa974 100644
--- a/arch/arm/include/debug/zynq.S
+++ b/arch/arm/include/debug/zynq.S
@@ -12,9 +12,25 @@
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
+#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] */
-#include <mach/zynq_soc.h>
-#include <mach/uart.h>
+#define UART_SR_TXFULL 0x00000010 /* TX FIFO full */
+#define UART_SR_TXEMPTY 0x00000008 /* TX FIFO empty */
+
+#define UART0_PHYS 0xE0000000
+#define UART1_PHYS 0xE0001000
+#define UART_SIZE SZ_4K
+#define UART_VIRT 0xF0001000
+
+#if IS_ENABLED(CONFIG_DEBUG_ZYNQ_UART1)
+# define LL_UART_PADDR UART1_PHYS
+#else
+# define LL_UART_PADDR UART0_PHYS
+#endif
+
+#define LL_UART_VADDR UART_VIRT
.macro addruart, rp, rv, tmp
ldr \rp, =LL_UART_PADDR @ physical
diff --git a/arch/arm/mach-zynq/Kconfig b/arch/arm/mach-zynq/Kconfig
new file mode 100644
index 0000000..adb6c0e
--- /dev/null
+++ b/arch/arm/mach-zynq/Kconfig
@@ -0,0 +1,13 @@
+config ARCH_ZYNQ
+ bool "Xilinx Zynq ARM Cortex A9 Platform" if ARCH_MULTI_V7
+ select ARM_AMBA
+ select ARM_GIC
+ select COMMON_CLK
+ select CPU_V7
+ select GENERIC_CLOCKEVENTS
+ select ICST
+ select MIGHT_HAVE_CACHE_L2X0
+ select USE_OF
+ select SPARSE_IRQ
+ help
+ Support for Xilinx Zynq ARM Cortex A9 Platform
diff --git a/arch/arm/mach-zynq/common.c b/arch/arm/mach-zynq/common.c
index a2f48da..e16d4be 100644
--- a/arch/arm/mach-zynq/common.c
+++ b/arch/arm/mach-zynq/common.c
@@ -30,10 +30,10 @@
#include <asm/mach/time.h>
#include <asm/mach-types.h>
#include <asm/page.h>
+#include <asm/pgtable.h>
#include <asm/hardware/gic.h>
#include <asm/hardware/cache-l2x0.h>
-#include <mach/zynq_soc.h>
#include "common.h"
static struct of_device_id zynq_of_bus_ids[] __initdata = {
@@ -68,9 +68,9 @@ static void __init xilinx_irq_init(void)
of_irq_init(irq_match);
}
-/* The minimum devices needed to be mapped before the VM system is up and
- * running include the GIC, UART and Timer Counter.
- */
+#define SCU_PERIPH_PHYS 0xF8F00000
+#define SCU_PERIPH_SIZE SZ_8K
+#define SCU_PERIPH_VIRT (VMALLOC_END - SCU_PERIPH_SIZE)
static struct map_desc scu_desc __initdata = {
.virtual = SCU_PERIPH_VIRT,
diff --git a/arch/arm/mach-zynq/include/mach/uart.h b/arch/arm/mach-zynq/include/mach/uart.h
deleted file mode 100644
index 5c47c97..0000000
--- a/arch/arm/mach-zynq/include/mach/uart.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/* arch/arm/mach-zynq/include/mach/uart.h
- *
- * Copyright (C) 2011 Xilinx
- *
- * 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_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 */
-
-#endif
diff --git a/arch/arm/mach-zynq/include/mach/uncompress.h b/arch/arm/mach-zynq/include/mach/uncompress.h
deleted file mode 100644
index af4e844..0000000
--- a/arch/arm/mach-zynq/include/mach/uncompress.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/* arch/arm/mach-zynq/include/mach/uncompress.h
- *
- * Copyright (C) 2011 Xilinx
- *
- * 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_UNCOMPRESS_H__
-#define __MACH_UNCOMPRESS_H__
-
-#include <linux/io.h>
-#include <asm/processor.h>
-#include <mach/zynq_soc.h>
-#include <mach/uart.h>
-
-void arch_decomp_setup(void)
-{
-}
-
-static inline void flush(void)
-{
- /*
- * Wait while the FIFO is not empty
- */
- while (!(__raw_readl(IOMEM(LL_UART_PADDR + UART_SR_OFFSET)) &
- UART_SR_TXEMPTY))
- cpu_relax();
-}
-
-#define arch_decomp_wdog()
-
-static void putc(char ch)
-{
- /*
- * Wait for room in the FIFO, then write the char into the FIFO
- */
- while (__raw_readl(IOMEM(LL_UART_PADDR + UART_SR_OFFSET)) &
- UART_SR_TXFULL)
- cpu_relax();
-
- __raw_writel(ch, IOMEM(LL_UART_PADDR + UART_FIFO_OFFSET));
-}
-
-#endif
diff --git a/arch/arm/mach-zynq/include/mach/zynq_soc.h b/arch/arm/mach-zynq/include/mach/zynq_soc.h
deleted file mode 100644
index 2995044..0000000
--- a/arch/arm/mach-zynq/include/mach/zynq_soc.h
+++ /dev/null
@@ -1,49 +0,0 @@
-/* arch/arm/mach-zynq/include/mach/zynq_soc.h
- *
- * Copyright (C) 2011 Xilinx
- *
- * 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_XILINX_SOC_H__
-#define __MACH_XILINX_SOC_H__
-
-#include <asm/pgtable.h>
-
-#define PERIPHERAL_CLOCK_RATE 2500000
-
-/* Static peripheral mappings are mapped at the top of the vmalloc region. The
- * early uart mapping causes intermediate problems/failure at certain
- * addresses, including the very top of the vmalloc region. Map it at an
- * address that is known to work.
- */
-#define UART0_PHYS 0xE0000000
-#define UART1_PHYS 0xE0001000
-#define UART_SIZE SZ_4K
-#define UART_VIRT 0xF0001000
-
-#define SCU_PERIPH_PHYS 0xF8F00000
-#define SCU_PERIPH_SIZE SZ_8K
-#define SCU_PERIPH_VIRT (VMALLOC_END - SCU_PERIPH_SIZE)
-
-#if IS_ENABLED(CONFIG_DEBUG_ZYNQ_UART1)
-# define LL_UART_PADDR UART1_PHYS
-#else
-# define LL_UART_PADDR UART0_PHYS
-#endif
-
-#define LL_UART_VADDR UART_VIRT
-
-/* 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)
-
-#endif
--
1.8.0
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