From 9758e70a448f92fb850712650a0394d8532c17ff Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Tue, 11 Sep 2012 14:27:22 +0200 Subject: arm: mach-mvebu: use IOMEM() for base address definitions We now define all virtual base address constants using IOMEM() so that those are naturally typed as void __iomem pointers, and we do the necessary adjustements in the mach-mvebu code. Signed-off-by: Thomas Petazzoni Acked-by: Arnd Bergmann Tested-by: Andrew Lunn Signed-off-by: Jason Cooper --- arch/arm/mach-mvebu/armada-370-xp.c | 2 +- arch/arm/mach-mvebu/include/mach/armada-370-xp.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/arm/mach-mvebu') diff --git a/arch/arm/mach-mvebu/armada-370-xp.c b/arch/arm/mach-mvebu/armada-370-xp.c index 4ef923b032ec..dfe635b48136 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/include/mach/armada-370-xp.h b/arch/arm/mach-mvebu/include/mach/armada-370-xp.h index 25f0ca8d7820..aac9bebc6b03 100644 --- a/arch/arm/mach-mvebu/include/mach/armada-370-xp.h +++ b/arch/arm/mach-mvebu/include/mach/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 */ -- cgit v1.2.3 From 74dd80a7b9fe5e8438458bd17cc9352dff8fd6b7 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Tue, 11 Sep 2012 14:27:29 +0200 Subject: arm: mvebu: add basic address decoding support to Armada 370/XP This commit adds basic support for address decoding configuration for the Armada 370 and Armada XP SoCs, re-using the infrastructure provided in plat-orion. For now, only a BootROM window is configured on Armada XP, which is needed to get the non-boot CPUs started and is therefore a requirement for SMP support. Signed-off-by: Thomas Petazzoni Acked-by: Gregory CLEMENT Acked-by: Arnd Bergmann Tested-by: Andrew Lunn Signed-off-by: Jason Cooper --- arch/arm/mach-mvebu/Makefile | 2 +- arch/arm/mach-mvebu/addr-map.c | 134 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 135 insertions(+), 1 deletion(-) create mode 100644 arch/arm/mach-mvebu/addr-map.c (limited to 'arch/arm/mach-mvebu') diff --git a/arch/arm/mach-mvebu/Makefile b/arch/arm/mach-mvebu/Makefile index e61d2b8fdf50..21435581b92b 100644 --- a/arch/arm/mach-mvebu/Makefile +++ b/arch/arm/mach-mvebu/Makefile @@ -1,2 +1,2 @@ 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 000000000000..fe454a4430be --- /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 + * + * 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 + +/* + * 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); -- cgit v1.2.3