mv_machdep.c revision 236524
1262569Simp/*- 2262569Simp * Copyright (c) 1994-1998 Mark Brinicombe. 3262569Simp * Copyright (c) 1994 Brini. 4262569Simp * All rights reserved. 5262569Simp * 6262569Simp * This code is derived from software written for Brini by Mark Brinicombe 7262569Simp * 8262569Simp * Redistribution and use in source and binary forms, with or without 9262569Simp * modification, are permitted provided that the following conditions 10262569Simp * are met: 11262569Simp * 1. Redistributions of source code must retain the above copyright 12262569Simp * notice, this list of conditions and the following disclaimer. 13262569Simp * 2. Redistributions in binary form must reproduce the above copyright 14262569Simp * notice, this list of conditions and the following disclaimer in the 15262569Simp * documentation and/or other materials provided with the distribution. 16270864Simp * 3. All advertising materials mentioning features or use of this software 17262569Simp * must display the following acknowledgement: 18262569Simp * This product includes software developed by Brini. 19262569Simp * 4. The name of the company nor the name of the author may be used to 20262569Simp * endorse or promote products derived from this software without specific 21262569Simp * prior written permission. 22262569Simp * 23262569Simp * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED 24262569Simp * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 25262569Simp * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26262569Simp * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 27262569Simp * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 28262569Simp * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 29295436Sandrew * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30262569Simp * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31262569Simp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32262569Simp * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33262569Simp * SUCH DAMAGE. 34262569Simp * 35262569Simp * from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45 36262569Simp */ 37262569Simp 38262569Simp#include "opt_ddb.h" 39262569Simp#include "opt_platform.h" 40262569Simp 41262569Simp#include <sys/cdefs.h> 42262569Simp__FBSDID("$FreeBSD: head/sys/arm/mv/mv_machdep.c 236524 2012-06-03 18:34:32Z imp $"); 43262569Simp 44262569Simp#define _ARM32_BUS_DMA_PRIVATE 45262569Simp#include <sys/param.h> 46262569Simp#include <sys/systm.h> 47262569Simp#include <sys/sysproto.h> 48262569Simp#include <sys/signalvar.h> 49262569Simp#include <sys/imgact.h> 50262569Simp#include <sys/kernel.h> 51262569Simp#include <sys/ktr.h> 52262569Simp#include <sys/linker.h> 53262569Simp#include <sys/lock.h> 54262569Simp#include <sys/malloc.h> 55262569Simp#include <sys/mutex.h> 56262569Simp#include <sys/pcpu.h> 57262569Simp#include <sys/proc.h> 58262569Simp#include <sys/ptrace.h> 59262569Simp#include <sys/cons.h> 60262569Simp#include <sys/bio.h> 61262569Simp#include <sys/bus.h> 62262569Simp#include <sys/buf.h> 63270864Simp#include <sys/exec.h> 64270864Simp#include <sys/kdb.h> 65270864Simp#include <sys/msgbuf.h> 66270864Simp#include <machine/reg.h> 67270864Simp#include <machine/cpu.h> 68270864Simp#include <machine/fdt.h> 69270864Simp 70270864Simp#include <dev/fdt/fdt_common.h> 71270864Simp#include <dev/ofw/openfirm.h> 72270864Simp 73270864Simp#include <vm/vm.h> 74270864Simp#include <vm/pmap.h> 75262569Simp#include <vm/vm_object.h> 76262569Simp#include <vm/vm_page.h> 77262569Simp#include <vm/vm_pager.h> 78295436Sandrew#include <vm/vm_map.h> 79262569Simp#include <machine/pte.h> 80262569Simp#include <machine/pmap.h> 81262569Simp#include <machine/vmparam.h> 82279385Simp#include <machine/pcb.h> 83279385Simp#include <machine/undefined.h> 84279385Simp#include <machine/machdep.h> 85279385Simp#include <machine/metadata.h> 86279385Simp#include <machine/armreg.h> 87262569Simp#include <machine/bus.h> 88262569Simp#include <sys/reboot.h> 89262569Simp 90262569Simp#include <arm/mv/mvreg.h> /* XXX */ 91262569Simp#include <arm/mv/mvvar.h> /* XXX eventually this should be eliminated */ 92262569Simp#include <arm/mv/mvwin.h> 93262569Simp 94262569Simp#ifdef DEBUG 95262569Simp#define debugf(fmt, args...) printf(fmt, ##args) 96262569Simp#else 97262569Simp#define debugf(fmt, args...) 98262569Simp#endif 99262569Simp 100262569Simp/* 101262569Simp * This is the number of L2 page tables required for covering max 102262569Simp * (hypothetical) memsize of 4GB and all kernel mappings (vectors, msgbuf, 103262569Simp * stacks etc.), uprounded to be divisible by 4. 104262569Simp */ 105262569Simp#define KERNEL_PT_MAX 78 106262569Simp 107262569Simp/* Define various stack sizes in pages */ 108262569Simp#define IRQ_STACK_SIZE 1 109262569Simp#define ABT_STACK_SIZE 1 110262569Simp#define UND_STACK_SIZE 1 111262569Simp 112262569Simpextern unsigned char kernbase[]; 113262569Simpextern unsigned char _etext[]; 114262569Simpextern unsigned char _edata[]; 115262569Simpextern unsigned char __bss_start[]; 116262569Simpextern unsigned char _end[]; 117262569Simp 118262569Simp#ifdef DDB 119262569Simpextern vm_offset_t ksym_start, ksym_end; 120262569Simp#endif 121262569Simp 122262569Simpextern u_int data_abort_handler_address; 123262569Simpextern u_int prefetch_abort_handler_address; 124262569Simpextern u_int undefined_handler_address; 125262569Simp 126262569Simpextern vm_offset_t pmap_bootstrap_lastaddr; 127262569Simpextern int *end; 128262569Simp 129262569Simpstruct pv_addr kernel_pt_table[KERNEL_PT_MAX]; 130262569Simpstruct pcpu __pcpu; 131262569Simpstruct pcpu *pcpup = &__pcpu; 132262569Simp 133262569Simp/* Physical and virtual addresses for some global pages */ 134270864Simp 135270864Simpvm_paddr_t phys_avail[10]; 136270864Simpvm_paddr_t dump_avail[4]; 137262569Simpvm_offset_t physical_pages; 138262569Simpvm_offset_t pmap_bootstrap_lastaddr; 139262569Simp 140262569Simpconst struct pmap_devmap *pmap_devmap_bootstrap_table; 141262569Simpstruct pv_addr systempage; 142262569Simpstruct pv_addr msgbufpv; 143262569Simpstruct pv_addr irqstack; 144262569Simpstruct pv_addr undstack; 145262569Simpstruct pv_addr abtstack; 146262569Simpstruct pv_addr kernelstack; 147262569Simp 148295436Sandrewstatic struct trapframe proc0_tf; 149295436Sandrew 150262569Simpstatic struct mem_region availmem_regions[FDT_MEM_REGIONS]; 151262569Simpstatic int availmem_regions_sz; 152262569Simp 153262569Simpstatic void print_kenv(void); 154262569Simpstatic void print_kernel_section_addr(void); 155262569Simp 156262569Simpstatic void physmap_init(void); 157262569Simpstatic int platform_devmap_init(void); 158262569Simpstatic int platform_mpp_init(void); 159262569Simp 160262569Simpstatic char * 161262569Simpkenv_next(char *cp) 162262569Simp{ 163262569Simp 164262569Simp if (cp != NULL) { 165262569Simp while (*cp != 0) 166262569Simp cp++; 167262569Simp cp++; 168262569Simp if (*cp == 0) 169262569Simp cp = NULL; 170262569Simp } 171262569Simp return (cp); 172262569Simp} 173262569Simp 174262569Simpstatic void 175262569Simpprint_kenv(void) 176262569Simp{ 177262569Simp int len; 178262569Simp char *cp; 179262569Simp 180262569Simp debugf("loader passed (static) kenv:\n"); 181262569Simp if (kern_envp == NULL) { 182262569Simp debugf(" no env, null ptr\n"); 183262569Simp return; 184262569Simp } 185262569Simp debugf(" kern_envp = 0x%08x\n", (uint32_t)kern_envp); 186279385Simp 187279385Simp len = 0; 188279385Simp for (cp = kern_envp; cp != NULL; cp = kenv_next(cp)) 189262569Simp debugf(" %x %s\n", (uint32_t)cp, cp); 190262569Simp} 191262569Simp 192262569Simpstatic void 193262569Simpprint_kernel_section_addr(void) 194262569Simp{ 195262569Simp 196262569Simp debugf("kernel image addresses:\n"); 197262569Simp debugf(" kernbase = 0x%08x\n", (uint32_t)kernbase); 198262569Simp debugf(" _etext (sdata) = 0x%08x\n", (uint32_t)_etext); 199262569Simp debugf(" _edata = 0x%08x\n", (uint32_t)_edata); 200279385Simp debugf(" __bss_start = 0x%08x\n", (uint32_t)__bss_start); 201279385Simp debugf(" _end = 0x%08x\n", (uint32_t)_end); 202279385Simp} 203262569Simp 204262569Simpstatic void 205262569Simpphysmap_init(void) 206262569Simp{ 207262569Simp int i, j, cnt; 208262569Simp vm_offset_t phys_kernelend, kernload; 209262569Simp uint32_t s, e, sz; 210295436Sandrew struct mem_region *mp, *mp1; 211295436Sandrew 212295436Sandrew phys_kernelend = KERNPHYSADDR + (virtual_avail - KERNVIRTADDR); 213295436Sandrew kernload = KERNPHYSADDR; 214295436Sandrew 215295436Sandrew /* 216295436Sandrew * Remove kernel physical address range from avail 217295436Sandrew * regions list. Page align all regions. 218295436Sandrew * Non-page aligned memory isn't very interesting to us. 219295436Sandrew * Also, sort the entries for ascending addresses. 220295436Sandrew */ 221262569Simp sz = 0; 222262569Simp cnt = availmem_regions_sz; 223262569Simp debugf("processing avail regions:\n"); 224262569Simp for (mp = availmem_regions; mp->mr_size; mp++) { 225262569Simp s = mp->mr_start; 226262569Simp e = mp->mr_start + mp->mr_size; 227262569Simp debugf(" %08x-%08x -> ", s, e); 228262569Simp /* Check whether this region holds all of the kernel. */ 229262569Simp if (s < kernload && e > phys_kernelend) { 230262569Simp availmem_regions[cnt].mr_start = phys_kernelend; 231262569Simp availmem_regions[cnt++].mr_size = e - phys_kernelend; 232262569Simp e = kernload; 233262569Simp } 234279385Simp /* Look whether this regions starts within the kernel. */ 235279385Simp if (s >= kernload && s < phys_kernelend) { 236279385Simp if (e <= phys_kernelend) 237279385Simp goto empty; 238262569Simp s = phys_kernelend; 239279385Simp } 240279385Simp /* Now look whether this region ends within the kernel. */ 241279385Simp if (e > kernload && e <= phys_kernelend) { 242279385Simp if (s >= kernload) { 243262569Simp goto empty; 244262569Simp } 245279385Simp e = kernload; 246279385Simp } 247279385Simp /* Now page align the start and size of the region. */ 248279385Simp s = round_page(s); 249279385Simp e = trunc_page(e); 250262569Simp if (e < s) 251262569Simp e = s; 252262569Simp sz = e - s; 253262569Simp debugf("%08x-%08x = %x\n", s, e, sz); 254262569Simp 255262569Simp /* Check whether some memory is left here. */ 256262569Simp if (sz == 0) { 257262569Simp empty: 258262569Simp printf("skipping\n"); 259262569Simp bcopy(mp + 1, mp, 260262569Simp (cnt - (mp - availmem_regions)) * sizeof(*mp)); 261262569Simp cnt--; 262262569Simp mp--; 263262569Simp continue; 264262569Simp } 265262569Simp 266262569Simp /* Do an insertion sort. */ 267262569Simp for (mp1 = availmem_regions; mp1 < mp; mp1++) 268262569Simp if (s < mp1->mr_start) 269262569Simp break; 270262569Simp if (mp1 < mp) { 271262569Simp bcopy(mp1, mp1 + 1, (char *)mp - (char *)mp1); 272262569Simp mp1->mr_start = s; 273262569Simp mp1->mr_size = sz; 274262569Simp } else { 275262569Simp mp->mr_start = s; 276262569Simp mp->mr_size = sz; 277262569Simp } 278262569Simp } 279262569Simp availmem_regions_sz = cnt; 280262569Simp 281262569Simp /* Fill in phys_avail table, based on availmem_regions */ 282262569Simp debugf("fill in phys_avail:\n"); 283262569Simp for (i = 0, j = 0; i < availmem_regions_sz; i++, j += 2) { 284262569Simp 285270864Simp debugf(" region: 0x%08x - 0x%08x (0x%08x)\n", 286270864Simp availmem_regions[i].mr_start, 287270864Simp availmem_regions[i].mr_start + availmem_regions[i].mr_size, 288262569Simp availmem_regions[i].mr_size); 289262569Simp 290262569Simp /* 291262569Simp * We should not map the page at PA 0x0000000, the VM can't 292262569Simp * handle it, as pmap_extract() == 0 means failure. 293262569Simp */ 294262569Simp if (availmem_regions[i].mr_start > 0 || 295262569Simp availmem_regions[i].mr_size > PAGE_SIZE) { 296270864Simp phys_avail[j] = availmem_regions[i].mr_start; 297270864Simp if (phys_avail[j] == 0) 298270864Simp phys_avail[j] += PAGE_SIZE; 299262569Simp phys_avail[j + 1] = availmem_regions[i].mr_start + 300262569Simp availmem_regions[i].mr_size; 301262569Simp } else 302262569Simp j -= 2; 303262569Simp } 304262569Simp phys_avail[j] = 0; 305262569Simp phys_avail[j + 1] = 0; 306262569Simp} 307262569Simp 308262569Simpvoid * 309262569Simpinitarm(struct arm_boot_params *abp) 310262569Simp{ 311262569Simp struct pv_addr kernel_l1pt; 312262569Simp struct pv_addr dpcpu; 313262569Simp vm_offset_t dtbp, freemempos, l2_start, lastaddr; 314262569Simp uint32_t memsize, l2size; 315262569Simp void *kmdp; 316262569Simp void *mdp; 317262569Simp u_int l1pagetable; 318262569Simp int i = 0, j = 0, err_devmap = 0; 319262569Simp 320262569Simp mdp = (void *)abp->abp_r0; 321262569Simp kmdp = NULL; 322270864Simp lastaddr = 0; 323262569Simp memsize = 0; 324262569Simp dtbp = (vm_offset_t)NULL; 325295436Sandrew 326262569Simp set_cpufuncs(); 327262569Simp 328262569Simp /* 329262569Simp * Mask metadata pointer: it is supposed to be on page boundary. If 330270864Simp * the first argument (mdp) doesn't point to a valid address the 331262569Simp * bootloader must have passed us something else than the metadata 332262569Simp * ptr... In this case we want to fall back to some built-in settings. 333262569Simp */ 334262569Simp mdp = (void *)((uint32_t)mdp & ~PAGE_MASK); 335262569Simp 336270864Simp /* Parse metadata and fetch parameters */ 337262569Simp if (mdp != NULL) { 338262569Simp preload_metadata = mdp; 339262569Simp kmdp = preload_search_by_type("elf kernel"); 340262569Simp if (kmdp != NULL) { 341262569Simp boothowto = MD_FETCH(kmdp, MODINFOMD_HOWTO, int); 342270864Simp kern_envp = MD_FETCH(kmdp, MODINFOMD_ENVP, char *); 343262569Simp dtbp = MD_FETCH(kmdp, MODINFOMD_DTBP, vm_offset_t); 344262569Simp lastaddr = MD_FETCH(kmdp, MODINFOMD_KERNEND, 345262569Simp vm_offset_t); 346262569Simp#ifdef DDB 347262569Simp ksym_start = MD_FETCH(kmdp, MODINFOMD_SSYM, uintptr_t); 348270864Simp ksym_end = MD_FETCH(kmdp, MODINFOMD_ESYM, uintptr_t); 349262569Simp#endif 350262569Simp } 351262569Simp 352262569Simp preload_addr_relocate = KERNVIRTADDR - KERNPHYSADDR; 353262569Simp } else { 354262569Simp /* Fall back to hardcoded metadata. */ 355262569Simp lastaddr = fake_preload_metadata(); 356262569Simp } 357262569Simp 358262569Simp#if defined(FDT_DTB_STATIC) 359262569Simp /* 360262569Simp * In case the device tree blob was not retrieved (from metadata) try 361262569Simp * to use the statically embedded one. 362262569Simp */ 363262569Simp if (dtbp == (vm_offset_t)NULL) 364262569Simp dtbp = (vm_offset_t)&fdt_static_dtb; 365262569Simp#endif 366262569Simp 367262569Simp if (OF_install(OFW_FDT, 0) == FALSE) 368262569Simp while (1); 369262569Simp 370262569Simp if (OF_init((void *)dtbp) != 0) 371262569Simp while (1); 372262569Simp 373279385Simp /* Grab physical memory regions information from device tree. */ 374279385Simp if (fdt_get_mem_regions(availmem_regions, &availmem_regions_sz, 375279385Simp &memsize) != 0) 376262569Simp while(1); 377262569Simp 378262569Simp if (fdt_immr_addr(MV_BASE) != 0) 379262569Simp while (1); 380262569Simp 381262569Simp /* Platform-specific initialisation */ 382262569Simp pmap_bootstrap_lastaddr = fdt_immr_va - ARM_NOCACHE_KVA_SIZE; 383262569Simp 384262569Simp pcpu_init(pcpup, 0, sizeof(struct pcpu)); 385262569Simp PCPU_SET(curthread, &thread0); 386262569Simp 387279385Simp /* Calculate number of L2 tables needed for mapping vm_page_array */ 388279385Simp l2size = (memsize / PAGE_SIZE) * sizeof(struct vm_page); 389279385Simp l2size = (l2size >> L1_S_SHIFT) + 1; 390262569Simp 391262569Simp /* 392262569Simp * Add one table for end of kernel map, one for stacks, msgbuf and 393262569Simp * L1 and L2 tables map and one for vectors map. 394262569Simp */ 395262569Simp l2size += 3; 396262569Simp 397262569Simp /* Make it divisible by 4 */ 398262569Simp l2size = (l2size + 3) & ~3; 399262569Simp 400262569Simp#define KERNEL_TEXT_BASE (KERNBASE) 401262569Simp freemempos = (lastaddr + PAGE_MASK) & ~PAGE_MASK; 402262569Simp 403262569Simp /* Define a macro to simplify memory allocation */ 404262569Simp#define valloc_pages(var, np) \ 405262569Simp alloc_pages((var).pv_va, (np)); \ 406262569Simp (var).pv_pa = (var).pv_va + (KERNPHYSADDR - KERNVIRTADDR); 407262569Simp 408262569Simp#define alloc_pages(var, np) \ 409262569Simp (var) = freemempos; \ 410262569Simp freemempos += (np * PAGE_SIZE); \ 411262569Simp memset((char *)(var), 0, ((np) * PAGE_SIZE)); 412262569Simp 413262569Simp while (((freemempos - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) != 0) 414262569Simp freemempos += PAGE_SIZE; 415262569Simp valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); 416262569Simp 417262569Simp for (i = 0; i < l2size; ++i) { 418262569Simp if (!(i % (PAGE_SIZE / L2_TABLE_SIZE_REAL))) { 419262569Simp valloc_pages(kernel_pt_table[i], 420262569Simp L2_TABLE_SIZE / PAGE_SIZE); 421262569Simp j = i; 422262569Simp } else { 423262569Simp kernel_pt_table[i].pv_va = kernel_pt_table[j].pv_va + 424262569Simp L2_TABLE_SIZE_REAL * (i - j); 425262569Simp kernel_pt_table[i].pv_pa = 426262569Simp kernel_pt_table[i].pv_va - KERNVIRTADDR + 427262569Simp KERNPHYSADDR; 428262569Simp 429262569Simp } 430262569Simp } 431262569Simp /* 432262569Simp * Allocate a page for the system page mapped to 0x00000000 433262569Simp * or 0xffff0000. This page will just contain the system vectors 434262569Simp * and can be shared by all processes. 435262569Simp */ 436262569Simp valloc_pages(systempage, 1); 437262569Simp 438262569Simp /* Allocate dynamic per-cpu area. */ 439262569Simp valloc_pages(dpcpu, DPCPU_SIZE / PAGE_SIZE); 440262569Simp dpcpu_init((void *)dpcpu.pv_va, 0); 441262569Simp 442262569Simp /* Allocate stacks for all modes */ 443262569Simp valloc_pages(irqstack, IRQ_STACK_SIZE); 444262569Simp valloc_pages(abtstack, ABT_STACK_SIZE); 445262569Simp valloc_pages(undstack, UND_STACK_SIZE); 446262569Simp valloc_pages(kernelstack, KSTACK_PAGES); 447262569Simp 448279385Simp init_param1(); 449262569Simp 450279385Simp valloc_pages(msgbufpv, round_page(msgbufsize) / PAGE_SIZE); 451279385Simp 452262569Simp /* 453262569Simp * Now we start construction of the L1 page table 454262569Simp * We start by mapping the L2 page tables into the L1. 455295436Sandrew * This means that we can replace L1 mappings later on if necessary 456262569Simp */ 457262569Simp l1pagetable = kernel_l1pt.pv_va; 458279385Simp 459279385Simp /* 460279385Simp * Try to map as much as possible of kernel text and data using 461262569Simp * 1MB section mapping and for the rest of initial kernel address 462262569Simp * space use L2 coarse tables. 463262569Simp * 464262569Simp * Link L2 tables for mapping remainder of kernel (modulo 1MB) 465262569Simp * and kernel structures 466262569Simp */ 467262569Simp l2_start = lastaddr & ~(L1_S_OFFSET); 468262569Simp for (i = 0 ; i < l2size - 1; i++) 469262569Simp pmap_link_l2pt(l1pagetable, l2_start + i * L1_S_SIZE, 470262569Simp &kernel_pt_table[i]); 471262569Simp 472262569Simp pmap_curmaxkvaddr = l2_start + (l2size - 1) * L1_S_SIZE; 473262569Simp 474262569Simp /* Map kernel code and data */ 475262569Simp pmap_map_chunk(l1pagetable, KERNVIRTADDR, KERNPHYSADDR, 476262569Simp (((uint32_t)(lastaddr) - KERNVIRTADDR) + PAGE_MASK) & ~PAGE_MASK, 477262569Simp VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 478262569Simp 479279385Simp 480262569Simp /* Map L1 directory and allocated L2 page tables */ 481262569Simp pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa, 482262569Simp L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 483262569Simp 484262569Simp pmap_map_chunk(l1pagetable, kernel_pt_table[0].pv_va, 485262569Simp kernel_pt_table[0].pv_pa, 486262569Simp L2_TABLE_SIZE_REAL * l2size, 487262569Simp VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 488262569Simp 489262569Simp /* Map allocated DPCPU, stacks and msgbuf */ 490262569Simp pmap_map_chunk(l1pagetable, dpcpu.pv_va, dpcpu.pv_pa, 491262569Simp freemempos - dpcpu.pv_va, 492262569Simp VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 493262569Simp 494262569Simp /* Link and map the vector page */ 495262569Simp pmap_link_l2pt(l1pagetable, ARM_VECTORS_HIGH, 496262569Simp &kernel_pt_table[l2size - 1]); 497262569Simp pmap_map_entry(l1pagetable, ARM_VECTORS_HIGH, systempage.pv_pa, 498262569Simp VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 499262569Simp 500262569Simp /* Map pmap_devmap[] entries */ 501262569Simp err_devmap = platform_devmap_init(); 502262569Simp pmap_devmap_bootstrap(l1pagetable, pmap_devmap_bootstrap_table); 503262569Simp 504262569Simp cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL * 2)) | 505262569Simp DOMAIN_CLIENT); 506262569Simp setttb(kernel_l1pt.pv_pa); 507262569Simp cpu_tlb_flushID(); 508262569Simp cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL * 2)); 509262569Simp 510262569Simp /* 511262569Simp * Only after the SOC registers block is mapped we can perform device 512262569Simp * tree fixups, as they may attempt to read parameters from hardware. 513262569Simp */ 514262569Simp OF_interpret("perform-fixup", 0); 515262569Simp 516262569Simp /* 517262569Simp * Re-initialise MPP. It is important to call this prior to using 518262569Simp * console as the physical connection can be routed via MPP. 519262569Simp */ 520262569Simp if (platform_mpp_init() != 0) 521262569Simp while (1); 522262569Simp 523262569Simp cninit(); 524262569Simp 525262569Simp physmem = memsize / PAGE_SIZE; 526262569Simp 527262569Simp debugf("initarm: console initialized\n"); 528262569Simp debugf(" arg1 mdp = 0x%08x\n", (uint32_t)mdp); 529262569Simp debugf(" boothowto = 0x%08x\n", boothowto); 530262569Simp printf(" dtbp = 0x%08x\n", (uint32_t)dtbp); 531262569Simp print_kernel_section_addr(); 532262569Simp print_kenv(); 533262569Simp 534262569Simp if (err_devmap != 0) 535262569Simp printf("WARNING: could not fully configure devmap, error=%d\n", 536262569Simp err_devmap); 537262569Simp 538262569Simp /* 539262569Simp * Re-initialise decode windows 540262569Simp */ 541262569Simp if (soc_decode_win() != 0) 542262569Simp printf("WARNING: could not re-initialise decode windows! " 543262569Simp "Running with existing settings...\n"); 544262569Simp 545262569Simp /* 546262569Simp * Pages were allocated during the secondary bootstrap for the 547262569Simp * stacks for different CPU modes. 548262569Simp * We must now set the r13 registers in the different CPU modes to 549262569Simp * point to these stacks. 550262569Simp * Since the ARM stacks use STMFD etc. we must set r13 to the top end 551262569Simp * of the stack memory. 552262569Simp */ 553262569Simp cpu_control(CPU_CONTROL_MMU_ENABLE, CPU_CONTROL_MMU_ENABLE); 554262569Simp set_stackptr(PSR_IRQ32_MODE, 555262569Simp irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE); 556262569Simp set_stackptr(PSR_ABT32_MODE, 557262569Simp abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE); 558262569Simp set_stackptr(PSR_UND32_MODE, 559262569Simp undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE); 560262569Simp 561262569Simp /* 562262569Simp * We must now clean the cache again.... 563262569Simp * Cleaning may be done by reading new data to displace any 564262569Simp * dirty data in the cache. This will have happened in setttb() 565262569Simp * but since we are boot strapping the addresses used for the read 566262569Simp * may have just been remapped and thus the cache could be out 567262569Simp * of sync. A re-clean after the switch will cure this. 568262569Simp * After booting there are no gross relocations of the kernel thus 569262569Simp * this problem will not occur after initarm(). 570262569Simp */ 571262569Simp cpu_idcache_wbinv_all(); 572262569Simp 573262569Simp /* Set stack for exception handlers */ 574262569Simp data_abort_handler_address = (u_int)data_abort_handler; 575262569Simp prefetch_abort_handler_address = (u_int)prefetch_abort_handler; 576262569Simp undefined_handler_address = (u_int)undefinedinstruction_bounce; 577262569Simp undefined_init(); 578262569Simp 579279385Simp proc_linkup0(&proc0, &thread0); 580262569Simp thread0.td_kstack = kernelstack.pv_va; 581262569Simp thread0.td_kstack_pages = KSTACK_PAGES; 582262569Simp thread0.td_pcb = (struct pcb *) 583262569Simp (thread0.td_kstack + KSTACK_PAGES * PAGE_SIZE) - 1; 584262569Simp thread0.td_pcb->pcb_flags = 0; 585262569Simp thread0.td_frame = &proc0_tf; 586262569Simp pcpup->pc_curpcb = thread0.td_pcb; 587262569Simp 588262569Simp arm_vector_init(ARM_VECTORS_HIGH, ARM_VEC_ALL); 589262569Simp 590262569Simp dump_avail[0] = 0; 591279385Simp dump_avail[1] = memsize; 592279385Simp dump_avail[2] = 0; 593279385Simp dump_avail[3] = 0; 594279385Simp 595279385Simp pmap_bootstrap(freemempos, pmap_bootstrap_lastaddr, &kernel_l1pt); 596279385Simp msgbufp = (void *)msgbufpv.pv_va; 597262569Simp msgbufinit(msgbufp, msgbufsize); 598262569Simp mutex_init(); 599279385Simp 600279385Simp /* 601262569Simp * Prepare map of physical memory regions available to vm subsystem. 602279385Simp */ 603279385Simp physmap_init(); 604262569Simp 605262569Simp /* Do basic tuning, hz etc */ 606262569Simp init_param2(physmem); 607262569Simp kdb_init(); 608262569Simp return ((void *)(kernelstack.pv_va + USPACE_SVC_STACK_TOP - 609262569Simp sizeof(struct pcb))); 610262569Simp} 611262569Simp 612262569Simp#define MPP_PIN_MAX 50 613262569Simp#define MPP_PIN_CELLS 2 614262569Simp#define MPP_PINS_PER_REG 8 615262569Simp#define MPP_SEL(pin,func) (((func) & 0xf) << \ 616262569Simp (((pin) % MPP_PINS_PER_REG) * 4)) 617262569Simp 618262569Simpstatic int 619262569Simpplatform_mpp_init(void) 620262569Simp{ 621262569Simp pcell_t pinmap[MPP_PIN_MAX * MPP_PIN_CELLS]; 622262569Simp int mpp[MPP_PIN_MAX]; 623262569Simp uint32_t ctrl_val, ctrl_offset; 624262569Simp pcell_t reg[4]; 625262569Simp u_long start, size; 626262569Simp phandle_t node; 627262569Simp pcell_t pin_cells, *pinmap_ptr, pin_count; 628262569Simp ssize_t len; 629262569Simp int par_addr_cells, par_size_cells; 630262569Simp int tuple_size, tuples, rv, pins, i, j; 631262569Simp int mpp_pin, mpp_function; 632262569Simp 633262569Simp /* 634262569Simp * Try to access the MPP node directly i.e. through /aliases/mpp. 635262569Simp */ 636262569Simp if ((node = OF_finddevice("mpp")) != -1) 637262569Simp if (fdt_is_compatible(node, "mrvl,mpp")) 638262569Simp goto moveon; 639262569Simp /* 640262569Simp * Find the node the long way. 641262569Simp */ 642262569Simp if ((node = OF_finddevice("/")) == -1) 643262569Simp return (ENXIO); 644262569Simp 645262569Simp if ((node = fdt_find_compatible(node, "simple-bus", 0)) == 0) 646262569Simp return (ENXIO); 647262569Simp 648262569Simp if ((node = fdt_find_compatible(node, "mrvl,mpp", 0)) == 0) 649262569Simp return (ENXIO); 650262569Simpmoveon: 651262569Simp /* 652270864Simp * Process 'reg' prop. 653270864Simp */ 654270864Simp if ((rv = fdt_addrsize_cells(OF_parent(node), &par_addr_cells, 655270864Simp &par_size_cells)) != 0) 656270864Simp return(ENXIO); 657270864Simp 658270864Simp tuple_size = sizeof(pcell_t) * (par_addr_cells + par_size_cells); 659270864Simp len = OF_getprop(node, "reg", reg, sizeof(reg)); 660270864Simp tuples = len / tuple_size; 661270864Simp if (tuple_size <= 0) 662270864Simp return (EINVAL); 663270864Simp 664270864Simp /* 665270864Simp * Get address/size. XXX we assume only the first 'reg' tuple is used. 666270864Simp */ 667270864Simp rv = fdt_data_to_res(reg, par_addr_cells, par_size_cells, 668270864Simp &start, &size); 669270864Simp if (rv != 0) 670270864Simp return (rv); 671270864Simp start += fdt_immr_va; 672270864Simp 673270864Simp /* 674270864Simp * Process 'pin-count' and 'pin-map' props. 675270864Simp */ 676270864Simp if (OF_getprop(node, "pin-count", &pin_count, sizeof(pin_count)) <= 0) 677270864Simp return (ENXIO); 678270864Simp pin_count = fdt32_to_cpu(pin_count); 679270864Simp if (pin_count > MPP_PIN_MAX) 680270864Simp return (ERANGE); 681270864Simp 682270864Simp if (OF_getprop(node, "#pin-cells", &pin_cells, sizeof(pin_cells)) <= 0) 683270864Simp pin_cells = MPP_PIN_CELLS; 684270864Simp pin_cells = fdt32_to_cpu(pin_cells); 685270864Simp if (pin_cells > MPP_PIN_CELLS) 686270864Simp return (ERANGE); 687270864Simp tuple_size = sizeof(pcell_t) * pin_cells; 688270864Simp 689270864Simp bzero(pinmap, sizeof(pinmap)); 690270864Simp len = OF_getprop(node, "pin-map", pinmap, sizeof(pinmap)); 691270864Simp if (len <= 0) 692270864Simp return (ERANGE); 693270864Simp if (len % tuple_size) 694270864Simp return (ERANGE); 695270864Simp pins = len / tuple_size; 696270864Simp if (pins > pin_count) 697270864Simp return (ERANGE); 698270864Simp /* 699270864Simp * Fill out a "mpp[pin] => function" table. All pins unspecified in 700270864Simp * the 'pin-map' property are defaulted to 0 function i.e. GPIO. 701270864Simp */ 702270864Simp bzero(mpp, sizeof(mpp)); 703270864Simp pinmap_ptr = pinmap; 704270864Simp for (i = 0; i < pins; i++) { 705270864Simp mpp_pin = fdt32_to_cpu(*pinmap_ptr); 706270864Simp mpp_function = fdt32_to_cpu(*(pinmap_ptr + 1)); 707270864Simp mpp[mpp_pin] = mpp_function; 708270864Simp pinmap_ptr += pin_cells; 709270864Simp } 710270864Simp 711270864Simp /* 712270864Simp * Prepare and program MPP control register values. 713270864Simp */ 714270864Simp ctrl_offset = 0; 715270864Simp for (i = 0; i < pin_count;) { 716270864Simp ctrl_val = 0; 717270864Simp 718270864Simp for (j = 0; j < MPP_PINS_PER_REG; j++) { 719270864Simp if (i + j == pin_count - 1) 720270864Simp break; 721270864Simp ctrl_val |= MPP_SEL(i + j, mpp[i + j]); 722270864Simp } 723270864Simp i += MPP_PINS_PER_REG; 724270864Simp bus_space_write_4(fdtbus_bs_tag, start, ctrl_offset, 725270864Simp ctrl_val); 726270864Simp 727270864Simp#if defined(SOC_MV_ORION) 728270864Simp /* 729270864Simp * Third MPP reg on Orion SoC is placed 730262569Simp * non-linearly (with different offset). 731262569Simp */ 732262569Simp if (i == (2 * MPP_PINS_PER_REG)) 733262569Simp ctrl_offset = 0x50; 734262569Simp else 735262569Simp#endif 736262569Simp ctrl_offset += 4; 737262569Simp } 738262569Simp 739262569Simp return (0); 740262569Simp} 741262569Simp 742262569Simp#define FDT_DEVMAP_MAX (MV_WIN_CPU_MAX + 1) 743262569Simpstatic struct pmap_devmap fdt_devmap[FDT_DEVMAP_MAX] = { 744262569Simp { 0, 0, 0, 0, 0, } 745262569Simp}; 746262569Simp 747262569Simp/* 748262569Simp * XXX: When device entry in devmap has pd_size smaller than section size, 749262569Simp * system will freeze during initialization 750262569Simp */ 751262569Simp 752262569Simp/* 753262569Simp * Construct pmap_devmap[] with DT-derived config data. 754262569Simp */ 755262569Simp 756262569Simpstatic int 757262569Simpplatform_devmap_init(void) 758262569Simp{ 759262569Simp phandle_t root, child; 760262569Simp pcell_t bank_count; 761262569Simp u_long base, size; 762262569Simp int i, num_mapped; 763262569Simp 764262569Simp i = 0; 765262569Simp pmap_devmap_bootstrap_table = &fdt_devmap[0]; 766262569Simp 767262569Simp /* 768262569Simp * IMMR range. 769262569Simp */ 770262569Simp fdt_devmap[i].pd_va = fdt_immr_va; 771262569Simp fdt_devmap[i].pd_pa = fdt_immr_pa; 772262569Simp fdt_devmap[i].pd_size = fdt_immr_size; 773262569Simp fdt_devmap[i].pd_prot = VM_PROT_READ | VM_PROT_WRITE; 774262569Simp fdt_devmap[i].pd_cache = PTE_NOCACHE; 775262569Simp i++; 776262569Simp 777262569Simp /* 778262569Simp * PCI range(s) and localbus. 779262569Simp */ 780295436Sandrew if ((root = OF_finddevice("/")) == -1) 781295436Sandrew return (ENXIO); 782295436Sandrew 783295436Sandrew for (child = OF_child(root); child != 0; child = OF_peer(child)) { 784295436Sandrew if (fdt_is_type(child, "pci")) { 785295436Sandrew /* 786295436Sandrew * Check space: each PCI node will consume 2 devmap 787295436Sandrew * entries. 788295436Sandrew */ 789295436Sandrew if (i + 1 >= FDT_DEVMAP_MAX) { 790295436Sandrew return (ENOMEM); 791295436Sandrew } 792295436Sandrew 793295436Sandrew /* 794295436Sandrew * XXX this should account for PCI and multiple ranges 795295436Sandrew * of a given kind. 796262569Simp */ 797262569Simp if (fdt_pci_devmap(child, &fdt_devmap[i], 798262569Simp MV_PCIE_IO_BASE, MV_PCIE_MEM_BASE) != 0) 799262569Simp return (ENXIO); 800262569Simp i += 2; 801262569Simp } 802262569Simp 803262569Simp if (fdt_is_compatible(child, "mrvl,lbc")) { 804262569Simp /* Check available space */ 805262569Simp if (OF_getprop(child, "bank-count", (void *)&bank_count, 806262569Simp sizeof(bank_count)) <= 0) 807262569Simp /* If no property, use default value */ 808262569Simp bank_count = 1; 809262569Simp else 810262569Simp bank_count = fdt32_to_cpu(bank_count); 811262569Simp 812262569Simp if ((i + bank_count) >= FDT_DEVMAP_MAX) 813262569Simp return (ENOMEM); 814262569Simp 815262569Simp /* Add all localbus ranges to device map */ 816262569Simp num_mapped = 0; 817262569Simp 818262569Simp if (fdt_localbus_devmap(child, &fdt_devmap[i], 819262569Simp (int)bank_count, &num_mapped) != 0) 820262569Simp return (ENXIO); 821262569Simp 822262569Simp i += num_mapped; 823262569Simp } 824262569Simp } 825262569Simp 826262569Simp /* 827262569Simp * CESA SRAM range. 828262569Simp */ 829262569Simp if ((child = OF_finddevice("sram")) != -1) 830262569Simp if (fdt_is_compatible(child, "mrvl,cesa-sram")) 831262569Simp goto moveon; 832262569Simp 833262569Simp if ((child = fdt_find_compatible(root, "mrvl,cesa-sram", 0)) == 0) 834262569Simp /* No CESA SRAM node. */ 835262569Simp return (0); 836262569Simpmoveon: 837262569Simp if (i >= FDT_DEVMAP_MAX) 838262569Simp return (ENOMEM); 839262569Simp 840262569Simp if (fdt_regsize(child, &base, &size) != 0) 841262569Simp return (EINVAL); 842262569Simp 843262569Simp fdt_devmap[i].pd_va = MV_CESA_SRAM_BASE; /* XXX */ 844262569Simp fdt_devmap[i].pd_pa = base; 845262569Simp fdt_devmap[i].pd_size = size; 846262569Simp fdt_devmap[i].pd_prot = VM_PROT_READ | VM_PROT_WRITE; 847262569Simp fdt_devmap[i].pd_cache = PTE_NOCACHE; 848262569Simp 849262569Simp return (0); 850262569Simp} 851262569Simp 852262569Simpstruct arm32_dma_range * 853262569Simpbus_dma_get_range(void) 854262569Simp{ 855262569Simp 856262569Simp return (NULL); 857262569Simp} 858262569Simp 859262569Simpint 860262569Simpbus_dma_get_range_nb(void) 861262569Simp{ 862262569Simp 863262569Simp return (0); 864262569Simp} 865262569Simp