1161592Scognet/* $NetBSD: hpc_machdep.c,v 1.70 2003/09/16 08:18:22 agc Exp $ */ 2161592Scognet 3161592Scognet/*- 4161592Scognet * Copyright (c) 1994-1998 Mark Brinicombe. 5161592Scognet * Copyright (c) 1994 Brini. 6161592Scognet * All rights reserved. 7161592Scognet * 8161592Scognet * This code is derived from software written for Brini by Mark Brinicombe 9161592Scognet * 10161592Scognet * Redistribution and use in source and binary forms, with or without 11161592Scognet * modification, are permitted provided that the following conditions 12161592Scognet * are met: 13161592Scognet * 1. Redistributions of source code must retain the above copyright 14161592Scognet * notice, this list of conditions and the following disclaimer. 15161592Scognet * 2. Redistributions in binary form must reproduce the above copyright 16161592Scognet * notice, this list of conditions and the following disclaimer in the 17161592Scognet * documentation and/or other materials provided with the distribution. 18161592Scognet * 3. All advertising materials mentioning features or use of this software 19161592Scognet * must display the following acknowledgement: 20161592Scognet * This product includes software developed by Brini. 21161592Scognet * 4. The name of the company nor the name of the author may be used to 22161592Scognet * endorse or promote products derived from this software without specific 23161592Scognet * prior written permission. 24161592Scognet * 25161592Scognet * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED 26161592Scognet * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 27161592Scognet * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 28161592Scognet * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 29161592Scognet * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 30161592Scognet * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 31161592Scognet * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32161592Scognet * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33161592Scognet * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34161592Scognet * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35161592Scognet * SUCH DAMAGE. 36161592Scognet * 37161592Scognet * RiscBSD kernel project 38161592Scognet * 39161592Scognet * machdep.c 40161592Scognet * 41161592Scognet * Machine dependant functions for kernel setup 42161592Scognet * 43236987Simp * This file needs a lot of work. 44161592Scognet * 45161592Scognet * Created : 17/09/94 46161592Scognet */ 47161592Scognet 48161592Scognet#include <sys/cdefs.h> 49161592Scognet__FBSDID("$FreeBSD: releng/10.3/sys/arm/xscale/i80321/ep80219_machdep.c 278727 2015-02-13 22:32:02Z ian $"); 50161592Scognet 51161592Scognet#define _ARM32_BUS_DMA_PRIVATE 52161592Scognet#include <sys/param.h> 53161592Scognet#include <sys/systm.h> 54161592Scognet#include <sys/sysproto.h> 55161592Scognet#include <sys/signalvar.h> 56161592Scognet#include <sys/imgact.h> 57161592Scognet#include <sys/kernel.h> 58161592Scognet#include <sys/ktr.h> 59161592Scognet#include <sys/linker.h> 60161592Scognet#include <sys/lock.h> 61161592Scognet#include <sys/malloc.h> 62161592Scognet#include <sys/mutex.h> 63161592Scognet#include <sys/pcpu.h> 64161592Scognet#include <sys/proc.h> 65161592Scognet#include <sys/ptrace.h> 66161592Scognet#include <sys/cons.h> 67161592Scognet#include <sys/bio.h> 68161592Scognet#include <sys/bus.h> 69161592Scognet#include <sys/buf.h> 70161592Scognet#include <sys/exec.h> 71161592Scognet#include <sys/kdb.h> 72161592Scognet#include <sys/msgbuf.h> 73161592Scognet#include <machine/reg.h> 74161592Scognet#include <machine/cpu.h> 75161592Scognet 76161592Scognet#include <vm/vm.h> 77161592Scognet#include <vm/pmap.h> 78161592Scognet#include <vm/vm_object.h> 79161592Scognet#include <vm/vm_page.h> 80161592Scognet#include <vm/vm_map.h> 81259364Sian#include <machine/devmap.h> 82161592Scognet#include <machine/vmparam.h> 83161592Scognet#include <machine/pcb.h> 84161592Scognet#include <machine/undefined.h> 85161592Scognet#include <machine/machdep.h> 86161592Scognet#include <machine/metadata.h> 87161592Scognet#include <machine/armreg.h> 88161592Scognet#include <machine/bus.h> 89266194Sian#include <machine/physmem.h> 90161592Scognet#include <sys/reboot.h> 91161592Scognet 92161592Scognet#include <arm/xscale/i80321/i80321reg.h> 93161592Scognet#include <arm/xscale/i80321/i80321var.h> 94161592Scognet#include <arm/xscale/i80321/iq80321reg.h> 95161592Scognet#include <arm/xscale/i80321/obiovar.h> 96161592Scognet 97243194Sandrew#define KERNEL_PT_SYS 0 /* Page table for mapping proc0 zero page */ 98243194Sandrew#define KERNEL_PT_IOPXS 1 99243194Sandrew#define KERNEL_PT_BEFOREKERN 2 100243194Sandrew#define KERNEL_PT_AFKERNEL 3 /* L2 table for mapping after kernel */ 101243194Sandrew#define KERNEL_PT_AFKERNEL_NUM 9 102161592Scognet 103161592Scognet/* this should be evenly divisable by PAGE_SIZE / L2_TABLE_SIZE_REAL (or 4) */ 104161592Scognet#define NUM_KERNEL_PTS (KERNEL_PT_AFKERNEL + KERNEL_PT_AFKERNEL_NUM) 105161592Scognet 106161592Scognetstruct pv_addr kernel_pt_table[NUM_KERNEL_PTS]; 107161592Scognet 108161592Scognet/* Physical and virtual addresses for some global pages */ 109161592Scognet 110161592Scognetstruct pv_addr systempage; 111161592Scognetstruct pv_addr msgbufpv; 112161592Scognetstruct pv_addr irqstack; 113161592Scognetstruct pv_addr undstack; 114161592Scognetstruct pv_addr abtstack; 115161592Scognetstruct pv_addr kernelstack; 116161592Scognetstruct pv_addr minidataclean; 117161592Scognet 118161592Scognet 119161592Scognet/* #define IQ80321_OBIO_BASE 0xfe800000UL */ 120161592Scognet/* #define IQ80321_OBIO_SIZE 0x00100000UL */ 121161592Scognet 122161592Scognet/* Static device mappings. */ 123259364Sianstatic const struct arm_devmap_entry ep80219_devmap[] = { 124236987Simp /* 125161592Scognet * Map the on-board devices VA == PA so that we can access them 126161592Scognet * with the MMU on or off. 127161592Scognet */ 128161592Scognet { 129161592Scognet IQ80321_OBIO_BASE, 130161592Scognet IQ80321_OBIO_BASE, 131161592Scognet IQ80321_OBIO_SIZE, 132236987Simp VM_PROT_READ|VM_PROT_WRITE, 133266386Sian PTE_DEVICE, 134161592Scognet }, 135161592Scognet { 136161592Scognet IQ80321_IOW_VBASE, 137161592Scognet VERDE_OUT_XLATE_IO_WIN0_BASE, 138161592Scognet VERDE_OUT_XLATE_IO_WIN_SIZE, 139161592Scognet VM_PROT_READ|VM_PROT_WRITE, 140266386Sian PTE_DEVICE, 141236987Simp }, 142161592Scognet { 143161592Scognet IQ80321_80321_VBASE, 144161592Scognet VERDE_PMMR_BASE, 145161592Scognet VERDE_PMMR_SIZE, 146161592Scognet VM_PROT_READ|VM_PROT_WRITE, 147266386Sian PTE_DEVICE, 148161592Scognet }, 149161592Scognet { 150161592Scognet 0, 151161592Scognet 0, 152161592Scognet 0, 153161592Scognet 0, 154161592Scognet 0, 155161592Scognet } 156161592Scognet}; 157161592Scognet 158161592Scognetextern vm_offset_t xscale_cache_clean_addr; 159161592Scognet 160161592Scognetvoid * 161236524Simpinitarm(struct arm_boot_params *abp) 162161592Scognet{ 163161592Scognet struct pv_addr kernel_l1pt; 164194784Sjeff struct pv_addr dpcpu; 165177883Simp int loop, i; 166161592Scognet u_int l1pagetable; 167161592Scognet vm_offset_t freemempos; 168161592Scognet vm_offset_t freemem_pt; 169161592Scognet vm_offset_t afterkern; 170161592Scognet vm_offset_t freemem_after; 171161592Scognet vm_offset_t lastaddr; 172161592Scognet uint32_t memsize, memstart; 173161592Scognet 174237040Simp lastaddr = parse_boot_param(abp); 175266194Sian arm_physmem_kernaddr = abp->abp_physaddr; 176161592Scognet set_cpufuncs(); 177161592Scognet pcpu_init(pcpup, 0, sizeof(struct pcpu)); 178161592Scognet PCPU_SET(curthread, &thread0); 179161592Scognet 180243194Sandrew /* Do basic tuning, hz etc */ 181243194Sandrew init_param1(); 182243194Sandrew 183161592Scognet freemempos = 0xa0200000; 184161592Scognet /* Define a macro to simplify memory allocation */ 185161592Scognet#define valloc_pages(var, np) \ 186243194Sandrew alloc_pages((var).pv_pa, (np)); \ 187161592Scognet (var).pv_va = (var).pv_pa + 0x20000000; 188161592Scognet 189161592Scognet#define alloc_pages(var, np) \ 190161592Scognet freemempos -= (np * PAGE_SIZE); \ 191161592Scognet (var) = freemempos; \ 192161592Scognet memset((char *)(var), 0, ((np) * PAGE_SIZE)); 193161592Scognet 194161592Scognet while (((freemempos - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) != 0) 195161592Scognet freemempos -= PAGE_SIZE; 196161592Scognet valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); 197161592Scognet for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { 198161592Scognet if (!(loop % (PAGE_SIZE / L2_TABLE_SIZE_REAL))) { 199161592Scognet valloc_pages(kernel_pt_table[loop], 200243194Sandrew L2_TABLE_SIZE / PAGE_SIZE); 201161592Scognet } else { 202161592Scognet kernel_pt_table[loop].pv_pa = freemempos + 203161592Scognet (loop % (PAGE_SIZE / L2_TABLE_SIZE_REAL)) * 204161592Scognet L2_TABLE_SIZE_REAL; 205236987Simp kernel_pt_table[loop].pv_va = 206161592Scognet kernel_pt_table[loop].pv_pa + 0x20000000; 207161592Scognet } 208161592Scognet } 209161592Scognet freemem_pt = freemempos; 210161592Scognet freemempos = 0xa0100000; 211161592Scognet /* 212161592Scognet * Allocate a page for the system page mapped to V0x00000000 213161592Scognet * This page will just contain the system vectors and can be 214161592Scognet * shared by all processes. 215161592Scognet */ 216161592Scognet valloc_pages(systempage, 1); 217161592Scognet 218194784Sjeff /* Allocate dynamic per-cpu area. */ 219194784Sjeff valloc_pages(dpcpu, DPCPU_SIZE / PAGE_SIZE); 220194784Sjeff dpcpu_init((void *)dpcpu.pv_va, 0); 221194784Sjeff 222161592Scognet /* Allocate stacks for all modes */ 223161592Scognet valloc_pages(irqstack, IRQ_STACK_SIZE); 224161592Scognet valloc_pages(abtstack, ABT_STACK_SIZE); 225161592Scognet valloc_pages(undstack, UND_STACK_SIZE); 226161592Scognet valloc_pages(kernelstack, KSTACK_PAGES); 227161592Scognet alloc_pages(minidataclean.pv_pa, 1); 228217688Spluknet valloc_pages(msgbufpv, round_page(msgbufsize) / PAGE_SIZE); 229161592Scognet /* 230161592Scognet * Allocate memory for the l1 and l2 page tables. The scheme to avoid 231161592Scognet * wasting memory by allocating the l1pt on the first 16k memory was 232161592Scognet * taken from NetBSD rpc_machdep.c. NKPT should be greater than 12 for 233161592Scognet * this to work (which is supposed to be the case). 234161592Scognet */ 235161592Scognet 236161592Scognet /* 237161592Scognet * Now we start construction of the L1 page table 238161592Scognet * We start by mapping the L2 page tables into the L1. 239161592Scognet * This means that we can replace L1 mappings later on if necessary 240161592Scognet */ 241161592Scognet l1pagetable = kernel_l1pt.pv_va; 242161592Scognet 243161592Scognet /* Map the L2 pages tables in the L1 page table */ 244161592Scognet pmap_link_l2pt(l1pagetable, ARM_VECTORS_HIGH & ~(0x00100000 - 1), 245243194Sandrew &kernel_pt_table[KERNEL_PT_SYS]); 246161592Scognet pmap_link_l2pt(l1pagetable, IQ80321_IOPXS_VBASE, 247243194Sandrew &kernel_pt_table[KERNEL_PT_IOPXS]); 248161592Scognet pmap_link_l2pt(l1pagetable, KERNBASE, 249243194Sandrew &kernel_pt_table[KERNEL_PT_BEFOREKERN]); 250161592Scognet pmap_map_chunk(l1pagetable, KERNBASE, IQ80321_SDRAM_START, 0x100000, 251243194Sandrew VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 252161592Scognet pmap_map_chunk(l1pagetable, KERNBASE + 0x100000, IQ80321_SDRAM_START + 0x100000, 253243194Sandrew 0x100000, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 254161592Scognet pmap_map_chunk(l1pagetable, KERNBASE + 0x200000, IQ80321_SDRAM_START + 0x200000, 255243194Sandrew (((uint32_t)(lastaddr) - KERNBASE - 0x200000) + L1_S_SIZE) & ~(L1_S_SIZE - 1), 256243194Sandrew VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 257161592Scognet freemem_after = ((int)lastaddr + PAGE_SIZE) & ~(PAGE_SIZE - 1); 258236987Simp afterkern = round_page(((vm_offset_t)lastaddr + L1_S_SIZE) & ~(L1_S_SIZE 259243194Sandrew - 1)); 260161592Scognet for (i = 0; i < KERNEL_PT_AFKERNEL_NUM; i++) { 261161592Scognet pmap_link_l2pt(l1pagetable, afterkern + i * 0x00100000, 262243194Sandrew &kernel_pt_table[KERNEL_PT_AFKERNEL + i]); 263161592Scognet } 264236987Simp pmap_map_entry(l1pagetable, afterkern, minidataclean.pv_pa, 265243194Sandrew VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 266161592Scognet 267161592Scognet 268161592Scognet /* Map the Mini-Data cache clean area. */ 269161592Scognet xscale_setup_minidata(l1pagetable, afterkern, 270243194Sandrew minidataclean.pv_pa); 271161592Scognet 272161592Scognet /* Map the vector page. */ 273161592Scognet pmap_map_entry(l1pagetable, ARM_VECTORS_HIGH, systempage.pv_pa, 274243194Sandrew VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 275259364Sian arm_devmap_bootstrap(l1pagetable, ep80219_devmap); 276161592Scognet /* 277161592Scognet * Give the XScale global cache clean code an appropriately 278161592Scognet * sized chunk of unmapped VA space starting at 0xff000000 279161592Scognet * (our device mappings end before this address). 280161592Scognet */ 281161592Scognet xscale_cache_clean_addr = 0xff000000U; 282161592Scognet 283161592Scognet cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); 284161592Scognet setttb(kernel_l1pt.pv_pa); 285161592Scognet cpu_tlb_flushID(); 286161592Scognet cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)); 287161592Scognet /* 288161592Scognet * Pages were allocated during the secondary bootstrap for the 289161592Scognet * stacks for different CPU modes. 290161592Scognet * We must now set the r13 registers in the different CPU modes to 291161592Scognet * point to these stacks. 292161592Scognet * Since the ARM stacks use STMFD etc. we must set r13 to the top end 293161592Scognet * of the stack memory. 294161592Scognet */ 295240802Sandrew set_stackptrs(0); 296161592Scognet 297161592Scognet /* 298161592Scognet * We must now clean the cache again.... 299161592Scognet * Cleaning may be done by reading new data to displace any 300161592Scognet * dirty data in the cache. This will have happened in setttb() 301161592Scognet * but since we are boot strapping the addresses used for the read 302161592Scognet * may have just been remapped and thus the cache could be out 303161592Scognet * of sync. A re-clean after the switch will cure this. 304185513Sstas * After booting there are no gross relocations of the kernel thus 305161592Scognet * this problem will not occur after initarm(). 306161592Scognet */ 307161592Scognet cpu_idcache_wbinv_all(); 308259377Sian cpu_setup(""); 309259377Sian 310161592Scognet /* 311161592Scognet * Fetch the SDRAM start/size from the i80321 SDRAM configration 312161592Scognet * registers. 313161592Scognet */ 314161592Scognet i80321_calibrate_delay(); 315278727Sian i80321_sdram_bounds(obio_bs_tag, IQ80321_80321_VBASE + VERDE_MCU_BASE, 316161592Scognet &memstart, &memsize); 317161592Scognet physmem = memsize / PAGE_SIZE; 318161592Scognet cninit(); 319161592Scognet 320161592Scognet undefined_init(); 321161592Scognet 322236828Sandrew init_proc0(kernelstack.pv_va); 323161592Scognet 324161592Scognet /* Enable MMU, I-cache, D-cache, write buffer. */ 325161592Scognet 326161592Scognet arm_vector_init(ARM_VECTORS_HIGH, ARM_VEC_ALL); 327247046Salc vm_max_kernel_address = 0xd0000000; 328247046Salc pmap_bootstrap(pmap_curmaxkvaddr, &kernel_l1pt); 329161592Scognet msgbufp = (void*)msgbufpv.pv_va; 330217688Spluknet msgbufinit(msgbufp, msgbufsize); 331161592Scognet mutex_init(); 332161592Scognet 333266194Sian /* 334266194Sian * Add the physical ram we have available. 335266194Sian * 336266194Sian * Exclude the kernel (and all the things we allocated which immediately 337266194Sian * follow the kernel) from the VM allocation pool but not from crash 338266194Sian * dumps. virtual_avail is a global variable which tracks the kva we've 339266194Sian * "allocated" while setting up pmaps. 340266194Sian * 341266194Sian * Prepare the list of physical memory available to the vm subsystem. 342266194Sian */ 343266194Sian arm_physmem_hardware_region(IQ80321_SDRAM_START, memsize); 344266194Sian arm_physmem_exclude_region(abp->abp_physaddr, 345266194Sian virtual_avail - KERNVIRTADDR, EXFLAG_NOALLOC); 346266194Sian arm_physmem_init_kernel_globals(); 347266194Sian 348161592Scognet init_param2(physmem); 349161592Scognet kdb_init(); 350161592Scognet return ((void *)(kernelstack.pv_va + USPACE_SVC_STACK_TOP - 351161592Scognet sizeof(struct pcb))); 352161592Scognet} 353161592Scognet 354161592Scognetextern int 355161592Scognetmachdep_pci_route_interrupt(device_t pcib, device_t dev, int pin) 356161592Scognet{ 357161592Scognet int bus; 358161592Scognet int device; 359161592Scognet int func; 360161592Scognet uint32_t busno; 361161592Scognet struct i80321_pci_softc *sc = device_get_softc(pcib); 362161592Scognet bus = pci_get_bus(dev); 363161592Scognet device = pci_get_slot(dev); 364161592Scognet func = pci_get_function(dev); 365161592Scognet busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR); 366161592Scognet busno = PCIXSR_BUSNO(busno); 367161592Scognet if (busno == 0xff) 368161592Scognet busno = 0; 369161592Scognet if (bus != busno) 370161592Scognet goto no_mapping; 371161592Scognet switch (device) { 372161592Scognet /* EP80219 PCI */ 373161592Scognet case 1: /* Ethernet i82555 10/100 */ 374161592Scognet printf("Device %d routed to irq %d\n", device, ICU_INT_XINT(0)); 375161592Scognet return (ICU_INT_XINT(0)); 376161592Scognet case 2: /* UART */ 377161592Scognet printf("Device %d routed to irq %d\n", device, ICU_INT_XINT(1)); 378161592Scognet return (ICU_INT_XINT(1)); 379161592Scognet case 3: 380161592Scognet /* 381161592Scognet * The S-ATA chips are behind the bridge, and all of 382161592Scognet * the S-ATA interrupts are wired together. 383161592Scognet */ 384161592Scognet printf("Device %d routed to irq %d\n", device, ICU_INT_XINT(2)); 385161592Scognet return (ICU_INT_XINT(2)); 386161592Scognet case 4: /* MINI-PIC_INT */ 387161592Scognet printf("Device %d routed to irq %d\n", device, ICU_INT_XINT(3)); 388161592Scognet return( ICU_INT_XINT(3)); 389161592Scognet default: 390161592Scognetno_mapping: 391161592Scognet printf("No mapping for %d/%d/%d/%c\n", bus, device, func, pin); 392161592Scognet 393161592Scognet } 394161592Scognet return (0); 395161592Scognet 396161592Scognet} 397