diff options
Diffstat (limited to 'arch/arm/mach-shmobile/setup-r8a7778.c')
| -rw-r--r-- | arch/arm/mach-shmobile/setup-r8a7778.c | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/setup-r8a7778.c b/arch/arm/mach-shmobile/setup-r8a7778.c new file mode 100644 index 000000000000..30b4a336308f --- /dev/null +++ b/arch/arm/mach-shmobile/setup-r8a7778.c @@ -0,0 +1,244 @@ +/* + * r8a7778 processor support + * + * Copyright (C) 2013 Renesas Solutions Corp. + * Copyright (C) 2013 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + * Copyright (C) 2013 Cogent Embedded, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/kernel.h> +#include <linux/io.h> +#include <linux/irqchip/arm-gic.h> +#include <linux/of.h> +#include <linux/of_platform.h> +#include <linux/platform_data/irq-renesas-intc-irqpin.h> +#include <linux/platform_device.h> +#include <linux/irqchip.h> +#include <linux/serial_sci.h> +#include <linux/sh_timer.h> +#include <mach/irqs.h> +#include <mach/r8a7778.h> +#include <mach/common.h> +#include <asm/mach/arch.h> +#include <asm/hardware/cache-l2x0.h> + +/* SCIF */ +#define SCIF_INFO(baseaddr, irq) \ +{ \ + .mapbase = baseaddr, \ + .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP, \ + .scscr = SCSCR_RE | SCSCR_TE | SCSCR_CKE1, \ + .scbrr_algo_id = SCBRR_ALGO_2, \ + .type = PORT_SCIF, \ + .irqs = SCIx_IRQ_MUXED(irq), \ +} + +static struct plat_sci_port scif_platform_data[] = { + SCIF_INFO(0xffe40000, gic_iid(0x66)), + SCIF_INFO(0xffe41000, gic_iid(0x67)), + SCIF_INFO(0xffe42000, gic_iid(0x68)), + SCIF_INFO(0xffe43000, gic_iid(0x69)), + SCIF_INFO(0xffe44000, gic_iid(0x6a)), + SCIF_INFO(0xffe45000, gic_iid(0x6b)), +}; + +/* TMU */ +static struct resource sh_tmu0_resources[] = { + DEFINE_RES_MEM(0xffd80008, 12), + DEFINE_RES_IRQ(gic_iid(0x40)), +}; + +static struct sh_timer_config sh_tmu0_platform_data = { + .name = "TMU00", + .channel_offset = 0x4, + .timer_bit = 0, + .clockevent_rating = 200, +}; + +static struct resource sh_tmu1_resources[] = { + DEFINE_RES_MEM(0xffd80014, 12), + DEFINE_RES_IRQ(gic_iid(0x41)), +}; + +static struct sh_timer_config sh_tmu1_platform_data = { + .name = "TMU01", + .channel_offset = 0x10, + .timer_bit = 1, + .clocksource_rating = 200, +}; + +/* Ether */ +static struct resource ether_resources[] = { + DEFINE_RES_MEM(0xfde00000, 0x400), + DEFINE_RES_IRQ(gic_iid(0x89)), +}; + +#define r8a7778_register_tmu(idx) \ + platform_device_register_resndata( \ + &platform_bus, "sh_tmu", idx, \ + sh_tmu##idx##_resources, \ + ARRAY_SIZE(sh_tmu##idx##_resources), \ + &sh_tmu##idx##_platform_data, \ + sizeof(sh_tmu##idx##_platform_data)) + +void __init r8a7778_add_standard_devices(void) +{ + int i; + +#ifdef CONFIG_CACHE_L2X0 + void __iomem *base = ioremap_nocache(0xf0100000, 0x1000); + if (base) { + /* + * Early BRESP enable, Shared attribute override enable, 64K*16way + * don't call iounmap(base) + */ + l2x0_init(base, 0x40470000, 0x82000fff); + } +#endif + + for (i = 0; i < ARRAY_SIZE(scif_platform_data); i++) + platform_device_register_data(&platform_bus, "sh-sci", i, + &scif_platform_data[i], + sizeof(struct plat_sci_port)); + + r8a7778_register_tmu(0); + r8a7778_register_tmu(1); +} + +void __init r8a7778_add_ether_device(struct sh_eth_plat_data *pdata) +{ + platform_device_register_resndata(&platform_bus, "sh_eth", -1, + ether_resources, + ARRAY_SIZE(ether_resources), + pdata, sizeof(*pdata)); +} + +static struct renesas_intc_irqpin_config irqpin_platform_data = { + .irq_base = irq_pin(0), /* IRQ0 -> IRQ3 */ + .sense_bitfield_width = 2, +}; + +static struct resource irqpin_resources[] = { + DEFINE_RES_MEM(0xfe78001c, 4), /* ICR1 */ + DEFINE_RES_MEM(0xfe780010, 4), /* INTPRI */ + DEFINE_RES_MEM(0xfe780024, 4), /* INTREQ */ + DEFINE_RES_MEM(0xfe780044, 4), /* INTMSK0 */ + DEFINE_RES_MEM(0xfe780064, 4), /* INTMSKCLR0 */ + DEFINE_RES_IRQ(gic_iid(0x3b)), /* IRQ0 */ + DEFINE_RES_IRQ(gic_iid(0x3c)), /* IRQ1 */ + DEFINE_RES_IRQ(gic_iid(0x3d)), /* IRQ2 */ + DEFINE_RES_IRQ(gic_iid(0x3e)), /* IRQ3 */ +}; + +void __init r8a7778_init_irq_extpin(int irlm) +{ + void __iomem *icr0 = ioremap_nocache(0xfe780000, PAGE_SIZE); + unsigned long tmp; + + if (!icr0) { + pr_warn("r8a7778: unable to setup external irq pin mode\n"); + return; + } + + tmp = ioread32(icr0); + if (irlm) + tmp |= 1 << 23; /* IRQ0 -> IRQ3 as individual pins */ + else + tmp &= ~(1 << 23); /* IRL mode - not supported */ + tmp |= (1 << 21); /* LVLMODE = 1 */ + iowrite32(tmp, icr0); + iounmap(icr0); + + if (irlm) + platform_device_register_resndata( + &platform_bus, "renesas_intc_irqpin", -1, + irqpin_resources, ARRAY_SIZE(irqpin_resources), + &irqpin_platform_data, sizeof(irqpin_platform_data)); +} + +#define INT2SMSKCR0 0x82288 /* 0xfe782288 */ +#define INT2SMSKCR1 0x8228c /* 0xfe78228c */ + +#define INT2NTSR0 0x00018 /* 0xfe700018 */ +#define INT2NTSR1 0x0002c /* 0xfe70002c */ +static void __init r8a7778_init_irq_common(void) +{ + void __iomem *base = ioremap_nocache(0xfe700000, 0x00100000); + + BUG_ON(!base); + + /* route all interrupts to ARM */ + __raw_writel(0x73ffffff, base + INT2NTSR0); + __raw_writel(0xffffffff, base + INT2NTSR1); + + /* unmask all known interrupts in INTCS2 */ + __raw_writel(0x08330773, base + INT2SMSKCR0); + __raw_writel(0x00311110, base + INT2SMSKCR1); + + iounmap(base); +} + +void __init r8a7778_init_irq(void) +{ + void __iomem *gic_dist_base; + void __iomem *gic_cpu_base; + + gic_dist_base = ioremap_nocache(0xfe438000, PAGE_SIZE); + gic_cpu_base = ioremap_nocache(0xfe430000, PAGE_SIZE); + BUG_ON(!gic_dist_base || !gic_cpu_base); + + /* use GIC to handle interrupts */ + gic_init(0, 29, gic_dist_base, gic_cpu_base); + + r8a7778_init_irq_common(); +} + +void __init r8a7778_init_delay(void) +{ + shmobile_setup_delay(800, 1, 3); /* Cortex-A9 @ 800MHz */ +} + +#ifdef CONFIG_USE_OF +void __init r8a7778_init_irq_dt(void) +{ + irqchip_init(); + r8a7778_init_irq_common(); +} + +static const struct of_dev_auxdata r8a7778_auxdata_lookup[] __initconst = { + {}, +}; + +void __init r8a7778_add_standard_devices_dt(void) +{ + of_platform_populate(NULL, of_default_bus_match_table, + r8a7778_auxdata_lookup, NULL); +} + +static const char *r8a7778_compat_dt[] __initdata = { + "renesas,r8a7778", + NULL, +}; + +DT_MACHINE_START(R8A7778_DT, "Generic R8A7778 (Flattened Device Tree)") + .init_early = r8a7778_init_delay, + .init_irq = r8a7778_init_irq_dt, + .init_machine = r8a7778_add_standard_devices_dt, + .init_time = shmobile_timer_init, + .dt_compat = r8a7778_compat_dt, +MACHINE_END + +#endif /* CONFIG_USE_OF */ |