From 849369d6c66d3054688672f97d31fceb8e8230fb Mon Sep 17 00:00:00 2001 From: root Date: Fri, 25 Dec 2015 04:40:36 +0000 Subject: initial_commit --- arch/arm/mach-dove/addr-map.c | 149 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 149 insertions(+) create mode 100644 arch/arm/mach-dove/addr-map.c (limited to 'arch/arm/mach-dove/addr-map.c') diff --git a/arch/arm/mach-dove/addr-map.c b/arch/arm/mach-dove/addr-map.c new file mode 100644 index 00000000..00be4fc2 --- /dev/null +++ b/arch/arm/mach-dove/addr-map.c @@ -0,0 +1,149 @@ +/* + * 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 +#include +#include +#include +#include +#include +#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 + +/* + * CPU Address Decode Windows registers + */ +#define WIN_CTRL(n) (BRIDGE_VIRT_BASE + ((n) << 4) + 0x0) +#define WIN_BASE(n) (BRIDGE_VIRT_BASE + ((n) << 4) + 0x4) +#define WIN_REMAP_LO(n) (BRIDGE_VIRT_BASE + ((n) << 4) + 0x8) +#define WIN_REMAP_HI(n) (BRIDGE_VIRT_BASE + ((n) << 4) + 0xc) + +struct mbus_dram_target_info dove_mbus_dram_info; + +static inline void __iomem *ddr_map_sc(int i) +{ + return (void __iomem *)(DOVE_MC_VIRT_BASE + 0x100 + ((i) << 4)); +} + +static int cpu_win_can_remap(int win) +{ + if (win < 4) + return 1; + + return 0; +} + +static void __init setup_cpu_win(int win, u32 base, u32 size, + u8 target, u8 attr, int remap) +{ + u32 ctrl; + + base &= 0xffff0000; + ctrl = ((size - 1) & 0xffff0000) | (attr << 8) | (target << 4) | 1; + + writel(base, WIN_BASE(win)); + writel(ctrl, WIN_CTRL(win)); + if (cpu_win_can_remap(win)) { + if (remap < 0) + remap = base; + writel(remap & 0xffff0000, WIN_REMAP_LO(win)); + writel(0, WIN_REMAP_HI(win)); + } +} + +void __init dove_setup_cpu_mbus(void) +{ + int i; + int cs; + + /* + * First, disable and clear windows. + */ + for (i = 0; i < 8; i++) { + writel(0, WIN_BASE(i)); + writel(0, WIN_CTRL(i)); + if (cpu_win_can_remap(i)) { + writel(0, WIN_REMAP_LO(i)); + writel(0, WIN_REMAP_HI(i)); + } + } + + /* + * Setup windows for PCIe IO+MEM space. + */ + setup_cpu_win(0, DOVE_PCIE0_IO_PHYS_BASE, DOVE_PCIE0_IO_SIZE, + TARGET_PCIE0, ATTR_PCIE_IO, DOVE_PCIE0_IO_BUS_BASE); + setup_cpu_win(1, DOVE_PCIE1_IO_PHYS_BASE, DOVE_PCIE1_IO_SIZE, + TARGET_PCIE1, ATTR_PCIE_IO, DOVE_PCIE1_IO_BUS_BASE); + setup_cpu_win(2, DOVE_PCIE0_MEM_PHYS_BASE, DOVE_PCIE0_MEM_SIZE, + TARGET_PCIE0, ATTR_PCIE_MEM, -1); + setup_cpu_win(3, DOVE_PCIE1_MEM_PHYS_BASE, DOVE_PCIE1_MEM_SIZE, + TARGET_PCIE1, ATTR_PCIE_MEM, -1); + + /* + * Setup window for CESA engine. + */ + setup_cpu_win(4, DOVE_CESA_PHYS_BASE, DOVE_CESA_SIZE, + TARGET_CESA, ATTR_CESA, -1); + + /* + * Setup the Window to the BootROM for Standby and Sleep Resume + */ + setup_cpu_win(5, DOVE_BOOTROM_PHYS_BASE, DOVE_BOOTROM_SIZE, + TARGET_BOOTROM, ATTR_BOOTROM, -1); + + /* + * Setup the Window to the PMU Scratch Pad space + */ + setup_cpu_win(6, DOVE_SCRATCHPAD_PHYS_BASE, DOVE_SCRATCHPAD_SIZE, + TARGET_SCRATCHPAD, ATTR_SCRATCHPAD, -1); + + /* + * Setup MBUS dram target info. + */ + dove_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 = &dove_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); + } + } + dove_mbus_dram_info.num_cs = cs; +} -- cgit v1.2.3