linux_dsm_epyc7002/arch/arm/plat-omap/include/mach/memory.h
Santosh Shilimkar 44169075e6 ARM: OMAP4: Add minimal support for omap4
This patch adds the support for OMAP4. The platform and machine specific
headers and sources updated for OMAP4430 SDP platform.

OMAP4430 is Texas Instrument's SOC based on ARM Cortex-A9 SMP architecture.
It's a dual core SOC with GIC used for interrupt handling and SCU for cache
coherency.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-05-28 14:16:04 -07:00

97 lines
3.3 KiB
C

/*
* arch/arm/plat-omap/include/mach/memory.h
*
* Memory map for OMAP-1510 and 1610
*
* Copyright (C) 2000 RidgeRun, Inc.
* Author: Greg Lonnon <glonnon@ridgerun.com>
*
* This file was derived from arch/arm/mach-intergrator/include/mach/memory.h
* Copyright (C) 1999 ARM Limited
*
* 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* 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.
*/
#ifndef __ASM_ARCH_MEMORY_H
#define __ASM_ARCH_MEMORY_H
/*
* Physical DRAM offset.
*/
#if defined(CONFIG_ARCH_OMAP1)
#define PHYS_OFFSET UL(0x10000000)
#elif defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
defined(CONFIG_ARCH_OMAP4)
#define PHYS_OFFSET UL(0x80000000)
#endif
/*
* Bus address is physical address, except for OMAP-1510 Local Bus.
* OMAP-1510 bus address is translated into a Local Bus address if the
* OMAP bus type is lbus. We do the address translation based on the
* device overriding the defaults used in the dma-mapping API.
* Note that the is_lbus_device() test is not very efficient on 1510
* because of the strncmp().
*/
#ifdef CONFIG_ARCH_OMAP15XX
/*
* OMAP-1510 Local Bus address offset
*/
#define OMAP1510_LB_OFFSET UL(0x30000000)
#define virt_to_lbus(x) ((x) - PAGE_OFFSET + OMAP1510_LB_OFFSET)
#define lbus_to_virt(x) ((x) - OMAP1510_LB_OFFSET + PAGE_OFFSET)
#define is_lbus_device(dev) (cpu_is_omap15xx() && dev && (strncmp(dev_name(dev), "ohci", 4) == 0))
#define __arch_page_to_dma(dev, page) \
({ dma_addr_t __dma = page_to_phys(page); \
if (is_lbus_device(dev)) \
__dma = __dma - PHYS_OFFSET + OMAP1510_LB_OFFSET; \
__dma; })
#define __arch_dma_to_virt(dev, addr) ({ (void *) (is_lbus_device(dev) ? \
lbus_to_virt(addr) : \
__phys_to_virt(addr)); })
#define __arch_virt_to_dma(dev, addr) ({ unsigned long __addr = (unsigned long)(addr); \
(dma_addr_t) (is_lbus_device(dev) ? \
virt_to_lbus(__addr) : \
__virt_to_phys(__addr)); })
#endif /* CONFIG_ARCH_OMAP15XX */
/* Override the ARM default */
#ifdef CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE
#if (CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE == 0)
#undef CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE
#define CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE 2
#endif
#define CONSISTENT_DMA_SIZE \
(((CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE + 1) & ~1) * 1024 * 1024)
#endif
#endif