common.c revision fe08bf9f46d6ae8e08de32d29234a2c928eebf8f
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> 220f586fbf6f6a9119392a5cb0f193ac11c753b09eJosh Cartwright#include <linux/clk/zynq.h> 23e932900a3279b5dbb6d8f43c7b369003620e137cMichal Simek#include <linux/clocksource.h> 240f586fbf6f6a9119392a5cb0f193ac11c753b09eJosh Cartwright#include <linux/of_address.h> 25b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <linux/of_irq.h> 26b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <linux/of_platform.h> 273d64b4496f5fd90618106555344205a522178c0cArnd Bergmann#include <linux/of.h> 28b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn 293d64b4496f5fd90618106555344205a522178c0cArnd Bergmann#include <asm/mach/arch.h> 30b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <asm/mach/map.h> 3103e07595febc4857b2b6ad756826f369c7628ec8Josh Cartwright#include <asm/mach/time.h> 323d64b4496f5fd90618106555344205a522178c0cArnd Bergmann#include <asm/mach-types.h> 33b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <asm/page.h> 349a45eb691d8712b64a733178746557f708043444Josh Cartwright#include <asm/pgtable.h> 35732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek#include <asm/smp_scu.h> 36b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <asm/hardware/cache-l2x0.h> 37b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn 38b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include "common.h" 39b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn 40732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simekvoid __iomem *zynq_scu_base; 41732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek 42b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linnstatic struct of_device_id zynq_of_bus_ids[] __initdata = { 43b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn { .compatible = "simple-bus", }, 44b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn {} 45b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn}; 46b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn 47b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn/** 48889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simek * zynq_init_machine - System specific initialization, intended to be 49889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simek * called from board specific initialization. 50b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn */ 51889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simekstatic void __init zynq_init_machine(void) 52b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn{ 53b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn /* 54b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * 64KB way size, 8-way associativity, parity disabled 55b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn */ 560fcfdbcacf6fa234064126e5b18c720ca27bc6e7Josh Cartwright l2x0_of_init(0x02060000, 0xF0F0FFFF); 57b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn 58b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn of_platform_bus_probe(NULL, zynq_of_bus_ids, NULL); 59b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn} 60b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn 61889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simekstatic void __init zynq_timer_init(void) 6203e07595febc4857b2b6ad756826f369c7628ec8Josh Cartwright{ 6364b889b39e9958fdcfe5e9b7aa1ac0ffca3fc9a2Michal Simek zynq_slcr_init(); 64c5263bb8b7944f1e34b36b5ea8a9119fc48a31aeMichal Simek clocksource_of_init(); 6503e07595febc4857b2b6ad756826f369c7628ec8Josh Cartwright} 6603e07595febc4857b2b6ad756826f369c7628ec8Josh Cartwright 67732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simekstatic struct map_desc zynq_cortex_a9_scu_map __initdata = { 68732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek .length = SZ_256, 69732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek .type = MT_DEVICE, 70732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek}; 71732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek 72732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simekstatic void __init zynq_scu_map_io(void) 73732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek{ 74732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek unsigned long base; 75732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek 76732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek base = scu_a9_get_base(); 77732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek zynq_cortex_a9_scu_map.pfn = __phys_to_pfn(base); 78732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek /* Expected address is in vmalloc area that's why simple assign here */ 79732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek zynq_cortex_a9_scu_map.virtual = base; 80732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek iotable_init(&zynq_cortex_a9_scu_map, 1); 81732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek zynq_scu_base = (void __iomem *)base; 82732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek BUG_ON(!zynq_scu_base); 83732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek} 84732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek 85b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn/** 86889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simek * zynq_map_io - Create memory mappings needed for early I/O. 87b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn */ 88889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simekstatic void __init zynq_map_io(void) 89b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn{ 90385f02b1696004461d89589e69ae7247081a74a2Josh Cartwright debug_ll_io_init(); 91732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek zynq_scu_map_io(); 92b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn} 933d64b4496f5fd90618106555344205a522178c0cArnd Bergmann 94fe08bf9f46d6ae8e08de32d29234a2c928eebf8fVincent Stehléstatic void zynq_system_reset(enum reboot_mode mode, const char *cmd) 9596790f0a283976bc59f68657237293fe97b02334Michal Simek{ 9696790f0a283976bc59f68657237293fe97b02334Michal Simek zynq_slcr_system_reset(); 9796790f0a283976bc59f68657237293fe97b02334Michal Simek} 9896790f0a283976bc59f68657237293fe97b02334Michal Simek 99889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simekstatic const char * const zynq_dt_match[] = { 100e06f1a9ed7ebff170ba05d2606d079fb36c6a52dJosh Cartwright "xlnx,zynq-7000", 1013d64b4496f5fd90618106555344205a522178c0cArnd Bergmann NULL 1023d64b4496f5fd90618106555344205a522178c0cArnd Bergmann}; 1033d64b4496f5fd90618106555344205a522178c0cArnd Bergmann 104514a590847ff42dc00ba6c6165736128ad7730a8Arnd BergmannDT_MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform") 105aa7eb2bb4e4a22e41bbe4612ff46e5885b13c33eMichal Simek .smp = smp_ops(zynq_smp_ops), 106889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simek .map_io = zynq_map_io, 107889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simek .init_machine = zynq_init_machine, 108889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simek .init_time = zynq_timer_init, 109889faa88142801ee6bec2de2b8fb4c606076d52fMichal Simek .dt_compat = zynq_dt_match, 11096790f0a283976bc59f68657237293fe97b02334Michal Simek .restart = zynq_system_reset, 1113d64b4496f5fd90618106555344205a522178c0cArnd BergmannMACHINE_END 112