mirror of https://gitee.com/openkylin/linux.git
125 lines
2.9 KiB
C
125 lines
2.9 KiB
C
/*
|
|
* arch/arm/mach-dove/addr-map.c
|
|
*
|
|
* Address map functions for Marvell Dove 88AP510 SoC
|
|
*
|
|
* 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 <asm/mach/arch.h>
|
|
#include <asm/setup.h>
|
|
#include <plat/addr-map.h>
|
|
#include "common.h"
|
|
|
|
/*
|
|
* Generic Address Decode Windows bit settings
|
|
*/
|
|
#define TARGET_DDR 0x0
|
|
#define TARGET_BOOTROM 0x1
|
|
#define TARGET_CESA 0x3
|
|
#define TARGET_PCIE0 0x4
|
|
#define TARGET_PCIE1 0x8
|
|
#define TARGET_SCRATCHPAD 0xd
|
|
|
|
#define ATTR_CESA 0x01
|
|
#define ATTR_BOOTROM 0xfd
|
|
#define ATTR_DEV_SPI0_ROM 0xfe
|
|
#define ATTR_DEV_SPI1_ROM 0xfb
|
|
#define ATTR_PCIE_IO 0xe0
|
|
#define ATTR_PCIE_MEM 0xe8
|
|
#define ATTR_SCRATCHPAD 0x0
|
|
|
|
static inline void __iomem *ddr_map_sc(int i)
|
|
{
|
|
return (void __iomem *)(DOVE_MC_VIRT_BASE + 0x100 + ((i) << 4));
|
|
}
|
|
|
|
/*
|
|
* Description of the windows needed by the platform code
|
|
*/
|
|
static struct __initdata orion_addr_map_cfg addr_map_cfg = {
|
|
.num_wins = 8,
|
|
.remappable_wins = 4,
|
|
.bridge_virt_base = BRIDGE_VIRT_BASE,
|
|
};
|
|
|
|
static const struct __initdata orion_addr_map_info addr_map_info[] = {
|
|
/*
|
|
* Windows for PCIe IO+MEM space.
|
|
*/
|
|
{ 0, DOVE_PCIE0_IO_PHYS_BASE, DOVE_PCIE0_IO_SIZE,
|
|
TARGET_PCIE0, ATTR_PCIE_IO, DOVE_PCIE0_IO_BUS_BASE
|
|
},
|
|
{ 1, DOVE_PCIE1_IO_PHYS_BASE, DOVE_PCIE1_IO_SIZE,
|
|
TARGET_PCIE1, ATTR_PCIE_IO, DOVE_PCIE1_IO_BUS_BASE
|
|
},
|
|
{ 2, DOVE_PCIE0_MEM_PHYS_BASE, DOVE_PCIE0_MEM_SIZE,
|
|
TARGET_PCIE0, ATTR_PCIE_MEM, -1
|
|
},
|
|
{ 3, DOVE_PCIE1_MEM_PHYS_BASE, DOVE_PCIE1_MEM_SIZE,
|
|
TARGET_PCIE1, ATTR_PCIE_MEM, -1
|
|
},
|
|
/*
|
|
* Window for CESA engine.
|
|
*/
|
|
{ 4, DOVE_CESA_PHYS_BASE, DOVE_CESA_SIZE,
|
|
TARGET_CESA, ATTR_CESA, -1
|
|
},
|
|
/*
|
|
* Window to the BootROM for Standby and Sleep Resume
|
|
*/
|
|
{ 5, DOVE_BOOTROM_PHYS_BASE, DOVE_BOOTROM_SIZE,
|
|
TARGET_BOOTROM, ATTR_BOOTROM, -1
|
|
},
|
|
/*
|
|
* Window to the PMU Scratch Pad space
|
|
*/
|
|
{ 6, DOVE_SCRATCHPAD_PHYS_BASE, DOVE_SCRATCHPAD_SIZE,
|
|
TARGET_SCRATCHPAD, ATTR_SCRATCHPAD, -1
|
|
},
|
|
/* End marker */
|
|
{ -1, 0, 0, 0, 0, 0 }
|
|
};
|
|
|
|
void __init dove_setup_cpu_mbus(void)
|
|
{
|
|
int i;
|
|
int cs;
|
|
|
|
/*
|
|
* Disable, clear and configure windows.
|
|
*/
|
|
orion_config_wins(&addr_map_cfg, addr_map_info);
|
|
|
|
/*
|
|
* Setup MBUS dram target info.
|
|
*/
|
|
orion_mbus_dram_info.mbus_dram_target_id = TARGET_DDR;
|
|
|
|
for (i = 0, cs = 0; i < 2; i++) {
|
|
u32 map = readl(ddr_map_sc(i));
|
|
|
|
/*
|
|
* Chip select enabled?
|
|
*/
|
|
if (map & 1) {
|
|
struct mbus_dram_window *w;
|
|
|
|
w = &orion_mbus_dram_info.cs[cs++];
|
|
w->cs_index = i;
|
|
w->mbus_attr = 0; /* CS address decoding done inside */
|
|
/* the DDR controller, no need to */
|
|
/* provide attributes */
|
|
w->base = map & 0xff800000;
|
|
w->size = 0x100000 << (((map & 0x000f0000) >> 16) - 4);
|
|
}
|
|
}
|
|
orion_mbus_dram_info.num_cs = cs;
|
|
}
|