diff options
author | Olof Johansson <olof@lixom.net> | 2012-09-22 14:09:21 -0700 |
---|---|---|
committer | Olof Johansson <olof@lixom.net> | 2012-09-22 14:22:47 -0700 |
commit | 0d601f613b8557cf6489f06251ae5dc383b811d0 (patch) | |
tree | 05f3a4d054e0bddc308af479918ce67cd02e8eba /arch/arm/mach-mvebu | |
parent | d7ffa2234c186ce040e79b43639628c1c482b115 (diff) | |
parent | 5b40baee4a39d96d4d6a48a2b2383982912c429b (diff) |
Merge branch 'kirkwood/addr_decode' of git://git.infradead.org/users/jcooper/linux into late/kirkwood
* 'kirkwood/addr_decode' of git://git.infradead.org/users/jcooper/linux:
arm: mvebu: add address decoding controller to the DT
arm: mvebu: add basic address decoding support to Armada 370/XP
arm: plat-orion: make bridge_virt_base non-const to support DT use case
arm: plat-orion: introduce PLAT_ORION_LEGACY hidden config option
arm: plat-orion: use void __iomem pointers for addr-map functions
arm: plat-orion: use void __iomem pointers for time functions
arm: plat-orion: use void __iomem pointers for MPP functions
arm: plat-orion: use void __iomem pointers for UART registration functions
arm: mach-mvebu: use IOMEM() for base address definitions
arm: mach-orion5x: use IOMEM() for base address definitions
arm: mach-mv78xx0: use IOMEM() for base address definitions
arm: mach-kirkwood: use IOMEM() for base address definitions
arm: mach-dove: use IOMEM() for base address definitions
arm: mach-orion5x: use plus instead of or for address definitions
arm: mach-mv78xx0: use plus instead of or for address definitions
arm: mach-kirkwood: use plus instead of or for address definitions
arm: mach-dove: use plus instead of or for address definitions
This branch had quite a few conflicts, in particular with the PCI static
map rework from Rob Herring, and a few other context conflicts due to
changes in Kconfig, etc.
I fixed up conflicts in:
arch/arm/Kconfig
arch/arm/mach-dove/common.c
arch/arm/mach-dove/include/mach/dove.h
arch/arm/mach-kirkwood/common.c
arch/arm/mach-kirkwood/include/mach/kirkwood.h
arch/arm/mach-mv78xx0/common.c
arch/arm/mach-mv78xx0/include/mach/mv78xx0.h
arch/arm/mach-orion5x/common.c
arch/arm/mach-orion5x/include/mach/orion5x.h
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch/arm/mach-mvebu')
-rw-r--r-- | arch/arm/mach-mvebu/Makefile | 2 | ||||
-rw-r--r-- | arch/arm/mach-mvebu/addr-map.c | 134 | ||||
-rw-r--r-- | arch/arm/mach-mvebu/armada-370-xp.c | 2 | ||||
-rw-r--r-- | arch/arm/mach-mvebu/armada-370-xp.h | 2 |
4 files changed, 137 insertions, 3 deletions
diff --git a/arch/arm/mach-mvebu/Makefile b/arch/arm/mach-mvebu/Makefile index 6ea8998ab8f..cbe56644306 100644 --- a/arch/arm/mach-mvebu/Makefile +++ b/arch/arm/mach-mvebu/Makefile @@ -1,4 +1,4 @@ ccflags-$(ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include obj-y += system-controller.o -obj-$(CONFIG_MACH_ARMADA_370_XP) += armada-370-xp.o irq-armada-370-xp.o +obj-$(CONFIG_MACH_ARMADA_370_XP) += armada-370-xp.o irq-armada-370-xp.o addr-map.o diff --git a/arch/arm/mach-mvebu/addr-map.c b/arch/arm/mach-mvebu/addr-map.c new file mode 100644 index 00000000000..fe454a4430b --- /dev/null +++ b/arch/arm/mach-mvebu/addr-map.c @@ -0,0 +1,134 @@ +/* + * Address map functions for Marvell 370 / XP SoCs + * + * Copyright (C) 2012 Marvell + * + * Thomas Petazzoni <thomas.petazzoni@free-electrons.com> + * + * 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 <linux/of.h> +#include <linux/of_address.h> +#include <plat/addr-map.h> + +/* + * Generic Address Decode Windows bit settings + */ +#define ARMADA_XP_TARGET_DEV_BUS 1 +#define ARMADA_XP_ATTR_DEV_BOOTROM 0x1D +#define ARMADA_XP_TARGET_ETH1 3 +#define ARMADA_XP_TARGET_PCIE_0_2 4 +#define ARMADA_XP_TARGET_ETH0 7 +#define ARMADA_XP_TARGET_PCIE_1_3 8 + +#define ARMADA_370_TARGET_DEV_BUS 1 +#define ARMADA_370_ATTR_DEV_BOOTROM 0x1D +#define ARMADA_370_TARGET_PCIE_0 4 +#define ARMADA_370_TARGET_PCIE_1 8 + +#define ARMADA_WINDOW_8_PLUS_OFFSET 0x90 +#define ARMADA_SDRAM_ADDR_DECODING_OFFSET 0x180 + +static const struct __initdata orion_addr_map_info +armada_xp_addr_map_info[] = { + /* + * Window for the BootROM, needed for SMP on Armada XP + */ + { 0, 0xfff00000, SZ_1M, ARMADA_XP_TARGET_DEV_BUS, + ARMADA_XP_ATTR_DEV_BOOTROM, -1 }, + /* End marker */ + { -1, 0, 0, 0, 0, 0 }, +}; + +static const struct __initdata orion_addr_map_info +armada_370_addr_map_info[] = { + /* End marker */ + { -1, 0, 0, 0, 0, 0 }, +}; + +static struct of_device_id of_addr_decoding_controller_table[] = { + { .compatible = "marvell,armada-addr-decoding-controller" }, + { /* end of list */ }, +}; + +static void __iomem * +armada_cfg_base(const struct orion_addr_map_cfg *cfg, int win) +{ + unsigned int offset; + + /* The register layout is a bit annoying and the below code + * tries to cope with it. + * - At offset 0x0, there are the registers for the first 8 + * windows, with 4 registers of 32 bits per window (ctrl, + * base, remap low, remap high) + * - Then at offset 0x80, there is a hole of 0x10 bytes for + * the internal registers base address and internal units + * sync barrier register. + * - Then at offset 0x90, there the registers for 12 + * windows, with only 2 registers of 32 bits per window + * (ctrl, base). + */ + if (win < 8) + offset = (win << 4); + else + offset = ARMADA_WINDOW_8_PLUS_OFFSET + (win << 3); + + return cfg->bridge_virt_base + offset; +} + +static struct __initdata orion_addr_map_cfg addr_map_cfg = { + .num_wins = 20, + .remappable_wins = 8, + .win_cfg_base = armada_cfg_base, +}; + +static int __init armada_setup_cpu_mbus(void) +{ + struct device_node *np; + void __iomem *mbus_unit_addr_decoding_base; + void __iomem *sdram_addr_decoding_base; + + np = of_find_matching_node(NULL, of_addr_decoding_controller_table); + if (!np) + return -ENODEV; + + mbus_unit_addr_decoding_base = of_iomap(np, 0); + BUG_ON(!mbus_unit_addr_decoding_base); + + sdram_addr_decoding_base = + mbus_unit_addr_decoding_base + + ARMADA_SDRAM_ADDR_DECODING_OFFSET; + + addr_map_cfg.bridge_virt_base = mbus_unit_addr_decoding_base; + + /* + * Disable, clear and configure windows. + */ + if (of_machine_is_compatible("marvell,armadaxp")) + orion_config_wins(&addr_map_cfg, armada_xp_addr_map_info); + else if (of_machine_is_compatible("marvell,armada370")) + orion_config_wins(&addr_map_cfg, armada_370_addr_map_info); + else { + pr_err("Unsupported SoC\n"); + return -EINVAL; + } + + /* + * Setup MBUS dram target info. + */ + orion_setup_cpu_mbus_target(&addr_map_cfg, + sdram_addr_decoding_base); + return 0; +} + +/* Using a early_initcall is needed so that this initialization gets + * done before the SMP initialization, which requires the BootROM to + * be remapped. */ +early_initcall(armada_setup_cpu_mbus); diff --git a/arch/arm/mach-mvebu/armada-370-xp.c b/arch/arm/mach-mvebu/armada-370-xp.c index b46418a8b35..49d791548ad 100644 --- a/arch/arm/mach-mvebu/armada-370-xp.c +++ b/arch/arm/mach-mvebu/armada-370-xp.c @@ -25,7 +25,7 @@ static struct map_desc armada_370_xp_io_desc[] __initdata = { { - .virtual = ARMADA_370_XP_REGS_VIRT_BASE, + .virtual = (unsigned long) ARMADA_370_XP_REGS_VIRT_BASE, .pfn = __phys_to_pfn(ARMADA_370_XP_REGS_PHYS_BASE), .length = ARMADA_370_XP_REGS_SIZE, .type = MT_DEVICE, diff --git a/arch/arm/mach-mvebu/armada-370-xp.h b/arch/arm/mach-mvebu/armada-370-xp.h index 25f0ca8d782..aac9bebc6b0 100644 --- a/arch/arm/mach-mvebu/armada-370-xp.h +++ b/arch/arm/mach-mvebu/armada-370-xp.h @@ -16,7 +16,7 @@ #define __MACH_ARMADA_370_XP_H #define ARMADA_370_XP_REGS_PHYS_BASE 0xd0000000 -#define ARMADA_370_XP_REGS_VIRT_BASE 0xfeb00000 +#define ARMADA_370_XP_REGS_VIRT_BASE IOMEM(0xfeb00000) #define ARMADA_370_XP_REGS_SIZE SZ_1M #endif /* __MACH_ARMADA_370_XP_H */ |