1220e6cf7SRob Herring /* 2220e6cf7SRob Herring * Copyright 2010-2011 Calxeda, Inc. 3220e6cf7SRob Herring * 4220e6cf7SRob Herring * This program is free software; you can redistribute it and/or modify it 5220e6cf7SRob Herring * under the terms and conditions of the GNU General Public License, 6220e6cf7SRob Herring * version 2, as published by the Free Software Foundation. 7220e6cf7SRob Herring * 8220e6cf7SRob Herring * This program is distributed in the hope it will be useful, but WITHOUT 9220e6cf7SRob Herring * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10220e6cf7SRob Herring * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 11220e6cf7SRob Herring * more details. 12220e6cf7SRob Herring * 13220e6cf7SRob Herring * You should have received a copy of the GNU General Public License along with 14220e6cf7SRob Herring * this program. If not, see <http://www.gnu.org/licenses/>. 15220e6cf7SRob Herring */ 16220e6cf7SRob Herring #include <linux/clk.h> 17220e6cf7SRob Herring #include <linux/clkdev.h> 18220e6cf7SRob Herring #include <linux/io.h> 19220e6cf7SRob Herring #include <linux/irq.h> 20220e6cf7SRob Herring #include <linux/irqdomain.h> 21220e6cf7SRob Herring #include <linux/of.h> 22220e6cf7SRob Herring #include <linux/of_irq.h> 23220e6cf7SRob Herring #include <linux/of_platform.h> 24220e6cf7SRob Herring #include <linux/of_address.h> 25220e6cf7SRob Herring 26220e6cf7SRob Herring #include <asm/cacheflush.h> 27220e6cf7SRob Herring #include <asm/unified.h> 28220e6cf7SRob Herring #include <asm/smp_scu.h> 29220e6cf7SRob Herring #include <asm/hardware/arm_timer.h> 30220e6cf7SRob Herring #include <asm/hardware/timer-sp.h> 31220e6cf7SRob Herring #include <asm/hardware/gic.h> 32220e6cf7SRob Herring #include <asm/hardware/cache-l2x0.h> 33220e6cf7SRob Herring #include <asm/mach/arch.h> 34220e6cf7SRob Herring #include <asm/mach/map.h> 35220e6cf7SRob Herring #include <asm/mach/time.h> 36220e6cf7SRob Herring #include <mach/irqs.h> 37220e6cf7SRob Herring 38220e6cf7SRob Herring #include "core.h" 39220e6cf7SRob Herring #include "sysregs.h" 40220e6cf7SRob Herring 41220e6cf7SRob Herring void __iomem *sregs_base; 42220e6cf7SRob Herring 43220e6cf7SRob Herring #define HB_SCU_VIRT_BASE 0xfee00000 44220e6cf7SRob Herring void __iomem *scu_base_addr = ((void __iomem *)(HB_SCU_VIRT_BASE)); 45220e6cf7SRob Herring 46220e6cf7SRob Herring static struct map_desc scu_io_desc __initdata = { 47220e6cf7SRob Herring .virtual = HB_SCU_VIRT_BASE, 48220e6cf7SRob Herring .pfn = 0, /* run-time */ 49220e6cf7SRob Herring .length = SZ_4K, 50220e6cf7SRob Herring .type = MT_DEVICE, 51220e6cf7SRob Herring }; 52220e6cf7SRob Herring 53220e6cf7SRob Herring static void __init highbank_scu_map_io(void) 54220e6cf7SRob Herring { 55220e6cf7SRob Herring unsigned long base; 56220e6cf7SRob Herring 57220e6cf7SRob Herring /* Get SCU base */ 58220e6cf7SRob Herring asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (base)); 59220e6cf7SRob Herring 60220e6cf7SRob Herring scu_io_desc.pfn = __phys_to_pfn(base); 61220e6cf7SRob Herring iotable_init(&scu_io_desc, 1); 62220e6cf7SRob Herring } 63220e6cf7SRob Herring 64220e6cf7SRob Herring static void __init highbank_map_io(void) 65220e6cf7SRob Herring { 66220e6cf7SRob Herring highbank_scu_map_io(); 67220e6cf7SRob Herring highbank_lluart_map_io(); 68220e6cf7SRob Herring } 69220e6cf7SRob Herring 70220e6cf7SRob Herring #define HB_JUMP_TABLE_PHYS(cpu) (0x40 + (0x10 * (cpu))) 71220e6cf7SRob Herring #define HB_JUMP_TABLE_VIRT(cpu) phys_to_virt(HB_JUMP_TABLE_PHYS(cpu)) 72220e6cf7SRob Herring 73220e6cf7SRob Herring void highbank_set_cpu_jump(int cpu, void *jump_addr) 74220e6cf7SRob Herring { 75220e6cf7SRob Herring writel(BSYM(virt_to_phys(jump_addr)), HB_JUMP_TABLE_VIRT(cpu)); 76220e6cf7SRob Herring __cpuc_flush_dcache_area(HB_JUMP_TABLE_VIRT(cpu), 16); 77220e6cf7SRob Herring outer_clean_range(HB_JUMP_TABLE_PHYS(cpu), 78220e6cf7SRob Herring HB_JUMP_TABLE_PHYS(cpu) + 15); 79220e6cf7SRob Herring } 80220e6cf7SRob Herring 81220e6cf7SRob Herring const static struct of_device_id irq_match[] = { 82220e6cf7SRob Herring { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, }, 83220e6cf7SRob Herring {} 84220e6cf7SRob Herring }; 85220e6cf7SRob Herring 86220e6cf7SRob Herring static void __init highbank_init_irq(void) 87220e6cf7SRob Herring { 88220e6cf7SRob Herring of_irq_init(irq_match); 89220e6cf7SRob Herring l2x0_of_init(0, ~0UL); 90220e6cf7SRob Herring } 91220e6cf7SRob Herring 92220e6cf7SRob Herring static void __init highbank_timer_init(void) 93220e6cf7SRob Herring { 94220e6cf7SRob Herring int irq; 95220e6cf7SRob Herring struct device_node *np; 96220e6cf7SRob Herring void __iomem *timer_base; 97220e6cf7SRob Herring 98220e6cf7SRob Herring /* Map system registers */ 99220e6cf7SRob Herring np = of_find_compatible_node(NULL, NULL, "calxeda,hb-sregs"); 100220e6cf7SRob Herring sregs_base = of_iomap(np, 0); 101220e6cf7SRob Herring WARN_ON(!sregs_base); 102220e6cf7SRob Herring 103220e6cf7SRob Herring np = of_find_compatible_node(NULL, NULL, "arm,sp804"); 104220e6cf7SRob Herring timer_base = of_iomap(np, 0); 105220e6cf7SRob Herring WARN_ON(!timer_base); 106220e6cf7SRob Herring irq = irq_of_parse_and_map(np, 0); 107220e6cf7SRob Herring 108220e6cf7SRob Herring highbank_clocks_init(); 109220e6cf7SRob Herring 110220e6cf7SRob Herring sp804_clocksource_init(timer_base + 0x20, "timer1"); 111220e6cf7SRob Herring sp804_clockevents_init(timer_base, irq, "timer0"); 112220e6cf7SRob Herring } 113220e6cf7SRob Herring 114220e6cf7SRob Herring static struct sys_timer highbank_timer = { 115220e6cf7SRob Herring .init = highbank_timer_init, 116220e6cf7SRob Herring }; 117220e6cf7SRob Herring 118220e6cf7SRob Herring static void highbank_power_off(void) 119220e6cf7SRob Herring { 120220e6cf7SRob Herring hignbank_set_pwr_shutdown(); 121220e6cf7SRob Herring scu_power_mode(scu_base_addr, SCU_PM_POWEROFF); 122220e6cf7SRob Herring 123220e6cf7SRob Herring while (1) 124220e6cf7SRob Herring cpu_do_idle(); 125220e6cf7SRob Herring } 126220e6cf7SRob Herring 127220e6cf7SRob Herring static void __init highbank_init(void) 128220e6cf7SRob Herring { 129220e6cf7SRob Herring pm_power_off = highbank_power_off; 130220e6cf7SRob Herring 131220e6cf7SRob Herring of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); 132220e6cf7SRob Herring } 133220e6cf7SRob Herring 134220e6cf7SRob Herring static const char *highbank_match[] __initconst = { 135220e6cf7SRob Herring "calxeda,highbank", 136220e6cf7SRob Herring NULL, 137220e6cf7SRob Herring }; 138220e6cf7SRob Herring 139220e6cf7SRob Herring DT_MACHINE_START(HIGHBANK, "Highbank") 140220e6cf7SRob Herring .map_io = highbank_map_io, 141220e6cf7SRob Herring .init_irq = highbank_init_irq, 142220e6cf7SRob Herring .timer = &highbank_timer, 1437e01799cSMarc Zyngier .handle_irq = gic_handle_irq, 144220e6cf7SRob Herring .init_machine = highbank_init, 145220e6cf7SRob Herring .dt_compat = highbank_match, 146220e6cf7SRob Herring MACHINE_END 147