common.c revision 4a32c74e762236a53627536b9b9c1693d3073359
1b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn/* 2b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * This file contains common code that is intended to be used across 3b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * boards so that it's not replicated. 4b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * 5b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * Copyright (C) 2011 Xilinx 6b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * 7b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * This software is licensed under the terms of the GNU General Public 8b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * License version 2, as published by the Free Software Foundation, and 9b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * may be copied, distributed, and modified under those terms. 10b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * 11b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * This program is distributed in the hope that it will be useful, 12b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * but WITHOUT ANY WARRANTY; without even the implied warranty of 13b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * GNU General Public License for more details. 15b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn */ 16b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn 17b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <linux/init.h> 18b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <linux/kernel.h> 19b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <linux/cpumask.h> 20b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <linux/platform_device.h> 21b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <linux/clk.h> 224a32c74e762236a53627536b9b9c1693d3073359Michal Simek#include <linux/clk-provider.h> 230f586fbf6f6a9119392a5cb0f193ac11c753b09eJosh Cartwright#include <linux/clk/zynq.h> 24e932900a3279b5dbb6d8f43c7b369003620e137cMichal Simek#include <linux/clocksource.h> 250f586fbf6f6a9119392a5cb0f193ac11c753b09eJosh Cartwright#include <linux/of_address.h> 26b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <linux/of_irq.h> 27b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <linux/of_platform.h> 283d64b4496f5fd90618106555344205a522178c0cArnd Bergmann#include <linux/of.h> 299f4f5d26c66153bc63ea60f4f05dd6f19e9e7b48Soren Brinkmann#include <linux/irqchip.h> 309f4f5d26c66153bc63ea60f4f05dd6f19e9e7b48Soren Brinkmann#include <linux/irqchip/arm-gic.h> 31b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn 323d64b4496f5fd90618106555344205a522178c0cArnd Bergmann#include <asm/mach/arch.h> 33b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <asm/mach/map.h> 3403e07595febc4857b2b6ad756826f369c7628ec8Josh Cartwright#include <asm/mach/time.h> 353d64b4496f5fd90618106555344205a522178c0cArnd Bergmann#include <asm/mach-types.h> 36b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <asm/page.h> 379a45eb691d8712b64a733178746557f708043444Josh Cartwright#include <asm/pgtable.h> 38732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek#include <asm/smp_scu.h> 39b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <asm/hardware/cache-l2x0.h> 40b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn 41b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include "common.h" 42b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn 43732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simekvoid __iomem *zynq_scu_base; 44732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek 453e8ceca6c76ec2d5ee47ece0420cf10d041cf58fDaniel Lezcanostatic struct platform_device zynq_cpuidle_device = { 463e8ceca6c76ec2d5ee47ece0420cf10d041cf58fDaniel Lezcano .name = "cpuidle-zynq", 473e8ceca6c76ec2d5ee47ece0420cf10d041cf58fDaniel Lezcano}; 483e8ceca6c76ec2d5ee47ece0420cf10d041cf58fDaniel Lezcano 49b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn/** 50889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simek * zynq_init_machine - System specific initialization, intended to be 51889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simek * called from board specific initialization. 52b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn */ 53889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simekstatic void __init zynq_init_machine(void) 54b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn{ 55b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn /* 56b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * 64KB way size, 8-way associativity, parity disabled 57b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn */ 580fcfdbcacf6fa234064126e5b18c720ca27bc6e7Josh Cartwright l2x0_of_init(0x02060000, 0xF0F0FFFF); 59b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn 60f4d5d7b7c60c0258f7556f5cfddec2934666aa77Soren Brinkmann of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); 613e8ceca6c76ec2d5ee47ece0420cf10d041cf58fDaniel Lezcano 623e8ceca6c76ec2d5ee47ece0420cf10d041cf58fDaniel Lezcano platform_device_register(&zynq_cpuidle_device); 63016f4dcae81e842a2b7dbfbc0fc9257f9f16e785Michal Simek 64016f4dcae81e842a2b7dbfbc0fc9257f9f16e785Michal Simek zynq_slcr_init(); 65b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn} 66b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn 67889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simekstatic void __init zynq_timer_init(void) 6803e07595febc4857b2b6ad756826f369c7628ec8Josh Cartwright{ 69016f4dcae81e842a2b7dbfbc0fc9257f9f16e785Michal Simek zynq_early_slcr_init(); 706f69c7f21ce89409ccc54bd596434fa61d5b26ffSteffen Trumtrar 71b0504e39c27b00101c9c1fa2c58fd896ae0f64f5Michal Simek zynq_clock_init(); 724a32c74e762236a53627536b9b9c1693d3073359Michal Simek of_clk_init(NULL); 73c5263bb8b7944f1e34b36b5ea8a9119fc48a31aeMichal Simek clocksource_of_init(); 7403e07595febc4857b2b6ad756826f369c7628ec8Josh Cartwright} 7503e07595febc4857b2b6ad756826f369c7628ec8Josh Cartwright 76732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simekstatic struct map_desc zynq_cortex_a9_scu_map __initdata = { 77732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek .length = SZ_256, 78732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek .type = MT_DEVICE, 79732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek}; 80732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek 81732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simekstatic void __init zynq_scu_map_io(void) 82732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek{ 83732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek unsigned long base; 84732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek 85732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek base = scu_a9_get_base(); 86732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek zynq_cortex_a9_scu_map.pfn = __phys_to_pfn(base); 87732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek /* Expected address is in vmalloc area that's why simple assign here */ 88732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek zynq_cortex_a9_scu_map.virtual = base; 89732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek iotable_init(&zynq_cortex_a9_scu_map, 1); 90732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek zynq_scu_base = (void __iomem *)base; 91732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek BUG_ON(!zynq_scu_base); 92732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek} 93732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek 94b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn/** 95889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simek * zynq_map_io - Create memory mappings needed for early I/O. 96b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn */ 97889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simekstatic void __init zynq_map_io(void) 98b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn{ 99385f02b1696004461d89589e69ae7247081a74a2Josh Cartwright debug_ll_io_init(); 100732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek zynq_scu_map_io(); 101b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn} 1023d64b4496f5fd90618106555344205a522178c0cArnd Bergmann 1039f4f5d26c66153bc63ea60f4f05dd6f19e9e7b48Soren Brinkmannstatic void __init zynq_irq_init(void) 1049f4f5d26c66153bc63ea60f4f05dd6f19e9e7b48Soren Brinkmann{ 1059f4f5d26c66153bc63ea60f4f05dd6f19e9e7b48Soren Brinkmann gic_arch_extn.flags = IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND; 1069f4f5d26c66153bc63ea60f4f05dd6f19e9e7b48Soren Brinkmann irqchip_init(); 1079f4f5d26c66153bc63ea60f4f05dd6f19e9e7b48Soren Brinkmann} 1089f4f5d26c66153bc63ea60f4f05dd6f19e9e7b48Soren Brinkmann 109fe08bf9f46d6ae8e08de32d29234a2c928eebf8fVincent Stehléstatic void zynq_system_reset(enum reboot_mode mode, const char *cmd) 11096790f0a283976bc59f68657237293fe97b02334Michal Simek{ 11196790f0a283976bc59f68657237293fe97b02334Michal Simek zynq_slcr_system_reset(); 11296790f0a283976bc59f68657237293fe97b02334Michal Simek} 11396790f0a283976bc59f68657237293fe97b02334Michal Simek 114889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simekstatic const char * const zynq_dt_match[] = { 115e06f1a9ed7ebff170ba05d2606d079fb36c6a52dJosh Cartwright "xlnx,zynq-7000", 1163d64b4496f5fd90618106555344205a522178c0cArnd Bergmann NULL 1173d64b4496f5fd90618106555344205a522178c0cArnd Bergmann}; 1183d64b4496f5fd90618106555344205a522178c0cArnd Bergmann 119514a590847ff42dc00ba6c6165736128ad7730a8Arnd BergmannDT_MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform") 120aa7eb2bb4e4a22e41bbe4612ff46e5885b13c33eMichal Simek .smp = smp_ops(zynq_smp_ops), 121889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simek .map_io = zynq_map_io, 1229f4f5d26c66153bc63ea60f4f05dd6f19e9e7b48Soren Brinkmann .init_irq = zynq_irq_init, 123889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simek .init_machine = zynq_init_machine, 124889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simek .init_time = zynq_timer_init, 125889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simek .dt_compat = zynq_dt_match, 12696790f0a283976bc59f68657237293fe97b02334Michal Simek .restart = zynq_system_reset, 1273d64b4496f5fd90618106555344205a522178c0cArnd BergmannMACHINE_END 128