addr-map.c
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/*
* arch/arm/mach-mv78xx0/addr-map.c
*
* Address map functions for Marvell MV78xx0 SoCs
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mbus.h>
#include <linux/io.h>
#include <plat/addr-map.h>
#include "common.h"
/*
* Generic Address Decode Windows bit settings
*/
#define TARGET_DEV_BUS 1
#define TARGET_PCIE0 4
#define TARGET_PCIE1 8
#define TARGET_PCIE(i) ((i) ? TARGET_PCIE1 : TARGET_PCIE0)
#define ATTR_DEV_SPI_ROM 0x1f
#define ATTR_DEV_BOOT 0x2f
#define ATTR_DEV_CS3 0x37
#define ATTR_DEV_CS2 0x3b
#define ATTR_DEV_CS1 0x3d
#define ATTR_DEV_CS0 0x3e
#define ATTR_PCIE_IO(l) (0xf0 & ~(0x10 << (l)))
#define ATTR_PCIE_MEM(l) (0xf8 & ~(0x10 << (l)))
/*
* CPU Address Decode Windows registers
*/
#define WIN0_OFF(n) (BRIDGE_VIRT_BASE + 0x0000 + ((n) << 4))
#define WIN8_OFF(n) (BRIDGE_VIRT_BASE + 0x0900 + (((n) - 8) << 4))
static void __init __iomem *win_cfg_base(int win)
{
/*
* Find the control register base address for this window.
*
* BRIDGE_VIRT_BASE points to the right (CPU0's or CPU1's)
* MBUS bridge depending on which CPU core we're running on,
* so we don't need to take that into account here.
*/
return (void __iomem *)((win < 8) ? WIN0_OFF(win) : WIN8_OFF(win));
}
/*
* Description of the windows needed by the platform code
*/
static struct __initdata orion_addr_map_cfg addr_map_cfg = {
.num_wins = 14,
.remappable_wins = 8,
.win_cfg_base = win_cfg_base,
};
void __init mv78xx0_setup_cpu_mbus(void)
{
/*
* Disable, clear and configure windows.
*/
orion_config_wins(&addr_map_cfg, NULL);
/*
* Setup MBUS dram target info.
*/
if (mv78xx0_core_index() == 0)
orion_setup_cpu_mbus_target(&addr_map_cfg,
DDR_WINDOW_CPU0_BASE);
else
orion_setup_cpu_mbus_target(&addr_map_cfg,
DDR_WINDOW_CPU1_BASE);
}
void __init mv78xx0_setup_pcie_io_win(int window, u32 base, u32 size,
int maj, int min)
{
orion_setup_cpu_win(&addr_map_cfg, window, base, size,
TARGET_PCIE(maj), ATTR_PCIE_IO(min), -1);
}
void __init mv78xx0_setup_pcie_mem_win(int window, u32 base, u32 size,
int maj, int min)
{
orion_setup_cpu_win(&addr_map_cfg, window, base, size,
TARGET_PCIE(maj), ATTR_PCIE_MEM(min), -1);
}