board_bwct.c revision 163521
1362844Sdelphij/*- 2362844Sdelphij * Copyright (c) 1994-1998 Mark Brinicombe. 3175296Sobrien * Copyright (c) 1994 Brini. 4175296Sobrien * All rights reserved. 5175296Sobrien * 6175296Sobrien * This code is derived from software written for Brini by Mark Brinicombe 7175296Sobrien * 8175296Sobrien * Redistribution and use in source and binary forms, with or without 9175296Sobrien * modification, are permitted provided that the following conditions 10226048Sobrien * are met: 11337827Seadler * 1. Redistributions of source code must retain the above copyright 12226048Sobrien * notice, this list of conditions and the following disclaimer. 13362844Sdelphij * 2. Redistributions in binary form must reproduce the above copyright 14284237Sdelphij * notice, this list of conditions and the following disclaimer in the 15226048Sobrien * documentation and/or other materials provided with the distribution. 16226048Sobrien * 3. All advertising materials mentioning features or use of this software 17226048Sobrien * must display the following acknowledgement: 18226048Sobrien * This product includes software developed by Brini. 19175296Sobrien * 4. The name of the company nor the name of the author may be used to 20175296Sobrien * endorse or promote products derived from this software without specific 21275698Sdelphij * prior written permission. 22226048Sobrien * 23226048Sobrien * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED 24175296Sobrien * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 25175296Sobrien * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26226048Sobrien * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 27186690Sobrien * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 28226048Sobrien * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 29175296Sobrien * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3068349Sobrien * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31175296Sobrien * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3268349Sobrien * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33175296Sobrien * SUCH DAMAGE. 34175296Sobrien * 3568349Sobrien * RiscBSD kernel project 3668349Sobrien * 37186690Sobrien * machdep.c 3868349Sobrien * 39175296Sobrien * Machine dependant functions for kernel setup 4068349Sobrien * 41175296Sobrien * This file needs a lot of work. 4268349Sobrien * 43175296Sobrien * Created : 17/09/94 4468349Sobrien */ 4568349Sobrien 4668349Sobrien#include "opt_msgbuf.h" 47175296Sobrien#include "opt_ddb.h" 4868349Sobrien#include "opt_at91.h" 49175296Sobrien 5068349Sobrien#include <sys/cdefs.h> 51191736Sobrien__FBSDID("$FreeBSD: head/sys/arm/at91/kb920x_machdep.c 163521 2006-10-20 07:03:57Z imp $"); 52226048Sobrien 53175296Sobrien#define _ARM32_BUS_DMA_PRIVATE 5468349Sobrien#include <sys/param.h> 55175296Sobrien#include <sys/systm.h> 56191736Sobrien#include <sys/sysproto.h> 57226048Sobrien#include <sys/signalvar.h> 58175296Sobrien#include <sys/imgact.h> 5968349Sobrien#include <sys/kernel.h> 6068349Sobrien#include <sys/ktr.h> 61186690Sobrien#include <sys/linker.h> 62175296Sobrien#include <sys/lock.h> 63186690Sobrien#include <sys/malloc.h> 64191736Sobrien#include <sys/mutex.h> 65226048Sobrien#include <sys/pcpu.h> 66175296Sobrien#include <sys/proc.h> 67191736Sobrien#include <sys/ptrace.h> 68226048Sobrien#include <sys/cons.h> 69191736Sobrien#include <sys/bio.h> 70226048Sobrien#include <sys/bus.h> 71175296Sobrien#include <sys/buf.h> 7268349Sobrien#include <sys/exec.h> 73175296Sobrien#include <sys/kdb.h> 7468349Sobrien#include <sys/msgbuf.h> 7568349Sobrien#include <machine/reg.h> 7668349Sobrien#include <machine/cpu.h> 7768349Sobrien 7868349Sobrien#include <vm/vm.h> 7968349Sobrien#include <vm/pmap.h> 80226048Sobrien#include <vm/vm.h> 81175296Sobrien#include <vm/vm_object.h> 82175296Sobrien#include <vm/vm_page.h> 83186690Sobrien#include <vm/vm_pager.h> 8468349Sobrien#include <vm/vm_map.h> 8568349Sobrien#include <vm/vnode_pager.h> 86175296Sobrien#include <machine/pmap.h> 87191736Sobrien#include <machine/vmparam.h> 88175296Sobrien#include <machine/pcb.h> 89175296Sobrien#include <machine/undefined.h> 9068349Sobrien#include <machine/machdep.h> 91175296Sobrien#include <machine/metadata.h> 9268349Sobrien#include <machine/armreg.h> 93191736Sobrien#include <machine/bus.h> 94226048Sobrien#include <sys/reboot.h> 95175296Sobrien 96191736Sobrien#include <arm/at91/at91rm92reg.h> 97226048Sobrien#include <arm/at91/at91_piovar.h> 98226048Sobrien#include <arm/at91/at91_pio_rm9200.h> 9968349Sobrien 100175296Sobrien#define KERNEL_PT_SYS 0 /* Page table for mapping proc0 zero page */ 101226048Sobrien#define KERNEL_PT_KERN 1 102175296Sobrien#define KERNEL_PT_KERN_NUM 22 10368349Sobrien#define KERNEL_PT_AFKERNEL KERNEL_PT_KERN + KERNEL_PT_KERN_NUM /* L2 table for mapping after kernel */ 10468349Sobrien#define KERNEL_PT_AFKERNEL_NUM 5 10574784Sobrien 10674784Sobrien/* this should be evenly divisable by PAGE_SIZE / L2_TABLE_SIZE_REAL (or 4) */ 107175296Sobrien#define NUM_KERNEL_PTS (KERNEL_PT_AFKERNEL + KERNEL_PT_AFKERNEL_NUM) 108186690Sobrien 109175296Sobrien/* Define various stack sizes in pages */ 110226048Sobrien#define IRQ_STACK_SIZE 1 111226048Sobrien#define ABT_STACK_SIZE 1 112186690Sobrien#define UND_STACK_SIZE 1 113159764Sobrien 114175296Sobrienextern u_int data_abort_handler_address; 115186690Sobrienextern u_int prefetch_abort_handler_address; 116175296Sobrienextern u_int undefined_handler_address; 11768349Sobrien 11868349Sobrienstruct pv_addr kernel_pt_table[NUM_KERNEL_PTS]; 11968349Sobrien 12068349Sobrienextern void *_end; 12168349Sobrien 12268349Sobrienextern int *end; 12368349Sobrien 12468349Sobrienstruct pcpu __pcpu; 12568349Sobrienstruct pcpu *pcpup = &__pcpu; 12668349Sobrien 127191736Sobrien/* Physical and virtual addresses for some global pages */ 128226048Sobrien 129175296Sobrienvm_paddr_t phys_avail[10]; 130191736Sobrienvm_paddr_t dump_avail[4]; 131226048Sobrienvm_offset_t physical_pages; 132175296Sobrienvm_offset_t clean_sva, clean_eva; 13368349Sobrien 13468349Sobrienstruct pv_addr systempage; 13568349Sobrienstruct pv_addr msgbufpv; 136175296Sobrienstruct pv_addr irqstack; 13768349Sobrienstruct pv_addr undstack; 13868349Sobrienstruct pv_addr abtstack; 13968349Sobrienstruct pv_addr kernelstack; 14068349Sobrienstruct pv_addr minidataclean; 14168349Sobrien 142175296Sobrienstatic struct trapframe proc0_tf; 14368349Sobrien 144175296Sobrien/* Static device mappings. */ 14568349Sobrienstatic const struct pmap_devmap kb920x_devmap[] = { 14668349Sobrien /* 14768349Sobrien * Map the on-board devices VA == PA so that we can access them 148186690Sobrien * with the MMU on or off. 149226048Sobrien */ 150226048Sobrien { 15168349Sobrien /* 152175296Sobrien * This at least maps the interrupt controller, the UART 15368349Sobrien * and the timer. Other devices should use newbus to 154175296Sobrien * map their memory anyway. 155191736Sobrien */ 156175296Sobrien 0xdff00000, 15768349Sobrien 0xfff00000, 15868349Sobrien 0x100000, 15968349Sobrien VM_PROT_READ|VM_PROT_WRITE, 16068349Sobrien PTE_NOCACHE, 161191736Sobrien }, 162175296Sobrien /* 163354939Sdelphij * We can't just map the OHCI registers VA == PA, because 164175296Sobrien * AT91RM92_OHCI_BASE belongs to the userland address space. 16568349Sobrien * We could just choose a different virtual address, but a better 166186690Sobrien * solution would probably be to just use pmap_mapdev() to allocate 167226048Sobrien * KVA, as we don't need the OHCI controller before the vm 168175296Sobrien * initialization is done. However, the AT91 resource allocation 169175296Sobrien * system doesn't know how to use pmap_mapdev() yet. 170267843Sdelphij */ 171267843Sdelphij#if 0 172337827Seadler { 173337827Seadler /* 174267843Sdelphij * Add the ohci controller, and anything else that might be 175354939Sdelphij * on this chip select for a VA/PA mapping. 176354939Sdelphij */ 177226048Sobrien AT91RM92_OHCI_BASE, 17868349Sobrien AT91RM92_OHCI_BASE, 179226048Sobrien AT91RM92_OHCI_SIZE, 180226048Sobrien VM_PROT_READ|VM_PROT_WRITE, 181226048Sobrien PTE_NOCACHE, 182226048Sobrien }, 183226048Sobrien#endif 18468349Sobrien { 185175296Sobrien 0, 186175296Sobrien 0, 187175296Sobrien 0, 188309847Sdelphij 0, 189309847Sdelphij 0, 190267843Sdelphij } 191267843Sdelphij}; 192267843Sdelphij 193267843Sdelphij#define SDRAM_START 0xa0000000 194226048Sobrien 195175296Sobrien#ifdef DDB 196175296Sobrienextern vm_offset_t ksym_start, ksym_end; 197226048Sobrien#endif 198226048Sobrien 199226048Sobrienstatic long 200175296Sobrienramsize(void) 201175296Sobrien{ 202175296Sobrien uint32_t *SDRAMC = (uint32_t *)(AT91RM92_BASE + AT91RM92_SDRAMC_BASE); 203226048Sobrien uint32_t cr, mr; 204226048Sobrien int banks, rows, cols, bw; 205226048Sobrien 206191736Sobrien cr = SDRAMC[AT91RM92_SDRAMC_CR / 4]; 207191736Sobrien mr = SDRAMC[AT91RM92_SDRAMC_MR / 4]; 208191736Sobrien bw = (mr & AT91RM92_SDRAMC_MR_DBW_16) ? 1 : 2; 209191736Sobrien banks = (cr & AT91RM92_SDRAMC_CR_NB_4) ? 2 : 1; 210191736Sobrien rows = ((cr & AT91RM92_SDRAMC_CR_NR_MASK) >> 2) + 11; 211234250Sobrien cols = (cr & AT91RM92_SDRAMC_CR_NC_MASK) + 8; 212191736Sobrien return (1 << (cols + rows + banks + bw)); 213191736Sobrien} 214175296Sobrien 215191736Sobrienstatic long 216360521Sdelphijboard_init(void) 217360521Sdelphij{ 218175296Sobrien /* 219309847Sdelphij * Since the USART supprots RS-485 multidrop mode, it allows the 220309847Sdelphij * TX pins to float. However, for RS-232 operations, we don't want 221354939Sdelphij * these pins to float. Instead, they should be pulled up to avoid 222354939Sdelphij * mismatches. Linux does something similar when it configures the 223175296Sobrien * TX lines. This implies that we also allow the RX lines to float 224191736Sobrien * rather than be in the state they are left in by the boot loader. 225175296Sobrien * Since they are input pins, I think that this is the right thing 226337827Seadler * to do. 227337827Seadler */ 228337827Seadler 229302221Sdelphij /* PIOA's A periph: Turn USART 0 and 2's TX/RX pins */ 230302221Sdelphij at91_pio_use_periph_a(AT91RM92_PIOA_BASE, 231302221Sdelphij AT91C_PA18_RXD0 | AT91C_PA22_RXD2, 0); 232175296Sobrien at91_pio_use_periph_a(AT91RM92_PIOA_BASE, 233362844Sdelphij AT91C_PA17_TXD0 | AT91C_PA23_TXD2, 1); 234362844Sdelphij /* PIOA's B periph: Turn USART 3's TX/RX pins */ 235362844Sdelphij at91_pio_use_periph_b(AT91RM92_PIOA_BASE, AT91C_PA6_RXD3, 0); 236362844Sdelphij at91_pio_use_periph_b(AT91RM92_PIOA_BASE, AT91C_PA5_TXD3, 1); 237362844Sdelphij#ifdef AT91_TSC 238362844Sdelphij /* We're using TC0's A1 and A2 input */ 239362844Sdelphij at91_pio_use_periph_b(AT91RM92_PIOA_BASE, 240362844Sdelphij AT91C_PA19_TIOA1 | AT91C_PA21_TIOA2, 0); 241337827Seadler#endif 242284237Sdelphij /* PIOB's A periph: Turn USART 1's TX/RX pins */ 243226048Sobrien at91_pio_use_periph_a(AT91RM92_PIOB_BASE, AT91C_PB21_RXD1, 0); 244226048Sobrien at91_pio_use_periph_a(AT91RM92_PIOB_BASE, AT91C_PB20_TXD1, 1); 245226048Sobrien 246226048Sobrien /* Pin assignment */ 247226048Sobrien#ifdef AT91_TSC 248226048Sobrien /* Assert PA24 low -- talk to rubidium */ 249191736Sobrien at91_pio_use_gpio(AT91RM92_PIOA_BASE, AT91C_PIO_PA24); 250175296Sobrien at91_pio_gpio_output(AT91RM92_PIOA_BASE, AT91C_PIO_PA24, 0); 251191736Sobrien at91_pio_gpio_clear(AT91RM92_PIOA_BASE, AT91C_PIO_PA24); 25268349Sobrien at91_pio_use_gpio(AT91RM92_PIOB_BASE, 253191736Sobrien AT91C_PIO_PB16 | AT91C_PIO_PB17 | AT91C_PIO_PB18 | AT91C_PIO_PB19); 254175296Sobrien#endif 25568349Sobrien 256191736Sobrien return (ramsize()); 257175296Sobrien} 258175296Sobrien 259328874Seadlervoid * 260328874Seadlerinitarm(void *arg, void *arg2) 261234250Sobrien{ 262234250Sobrien struct pv_addr kernel_l1pt; 263234250Sobrien int loop; 264234250Sobrien u_int l1pagetable; 265234250Sobrien vm_offset_t freemempos; 266234250Sobrien vm_offset_t afterkern; 267234250Sobrien int i; 268234250Sobrien uint32_t fake_preload[35]; 269234250Sobrien uint32_t memsize; 270234250Sobrien vm_offset_t lastaddr; 271234250Sobrien#ifdef DDB 272226048Sobrien vm_offset_t zstart = 0, zend = 0; 273159764Sobrien#endif 274226048Sobrien 275226048Sobrien i = 0; 276175296Sobrien 277159764Sobrien set_cpufuncs(); 278226048Sobrien 27968349Sobrien fake_preload[i++] = MODINFO_NAME; 280226048Sobrien fake_preload[i++] = strlen("elf kernel") + 1; 281226048Sobrien strcpy((char*)&fake_preload[i++], "elf kernel"); 282191736Sobrien i += 2; 283175296Sobrien fake_preload[i++] = MODINFO_TYPE; 284226048Sobrien fake_preload[i++] = strlen("elf kernel") + 1; 285226048Sobrien strcpy((char*)&fake_preload[i++], "elf kernel"); 286175296Sobrien i += 2; 287175296Sobrien fake_preload[i++] = MODINFO_ADDR; 288175296Sobrien fake_preload[i++] = sizeof(vm_offset_t); 289226048Sobrien fake_preload[i++] = KERNBASE; 290226048Sobrien fake_preload[i++] = MODINFO_SIZE; 291226048Sobrien fake_preload[i++] = sizeof(uint32_t); 292186690Sobrien fake_preload[i++] = (uint32_t)&end - KERNBASE; 293191736Sobrien#ifdef DDB 294186690Sobrien if (*(uint32_t *)KERNVIRTADDR == MAGIC_TRAMP_NUMBER) { 295186690Sobrien fake_preload[i++] = MODINFO_METADATA|MODINFOMD_SSYM; 296226048Sobrien fake_preload[i++] = sizeof(vm_offset_t); 297186690Sobrien fake_preload[i++] = *(uint32_t *)(KERNVIRTADDR + 4); 298267843Sdelphij fake_preload[i++] = MODINFO_METADATA|MODINFOMD_ESYM; 299267843Sdelphij fake_preload[i++] = sizeof(vm_offset_t); 300267843Sdelphij fake_preload[i++] = *(uint32_t *)(KERNVIRTADDR + 8); 301226048Sobrien lastaddr = *(uint32_t *)(KERNVIRTADDR + 8); 302267843Sdelphij zend = lastaddr; 303360521Sdelphij zstart = *(uint32_t *)(KERNVIRTADDR + 4); 304267843Sdelphij ksym_start = zstart; 305267843Sdelphij ksym_end = zend; 306267843Sdelphij } else 307267843Sdelphij#endif 308226048Sobrien lastaddr = (vm_offset_t)&end; 309133359Sobrien 310175296Sobrien fake_preload[i++] = 0; 311133359Sobrien fake_preload[i] = 0; 312159764Sobrien preload_metadata = (void *)fake_preload; 313226048Sobrien 314159764Sobrien 315226048Sobrien pcpu_init(pcpup, 0, sizeof(struct pcpu)); 316186690Sobrien PCPU_SET(curthread, &thread0); 317186690Sobrien 318226048Sobrien#define KERNEL_TEXT_BASE (KERNBASE) 319226048Sobrien freemempos = (lastaddr + PAGE_MASK) & ~PAGE_MASK; 320226048Sobrien /* Define a macro to simplify memory allocation */ 321226048Sobrien#define valloc_pages(var, np) \ 322226048Sobrien alloc_pages((var).pv_va, (np)); \ 323111658Sobrien (var).pv_pa = (var).pv_va + (KERNPHYSADDR - KERNVIRTADDR); 324111658Sobrien 325111658Sobrien#define alloc_pages(var, np) \ 326226048Sobrien (var) = freemempos; \ 327133359Sobrien freemempos += (np * PAGE_SIZE); \ 328226048Sobrien memset((char *)(var), 0, ((np) * PAGE_SIZE)); 329133359Sobrien 330175296Sobrien while (((freemempos - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) != 0) 331133359Sobrien freemempos += PAGE_SIZE; 332175296Sobrien valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); 333133359Sobrien for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { 334275698Sdelphij if (!(loop % (PAGE_SIZE / L2_TABLE_SIZE_REAL))) { 335275698Sdelphij valloc_pages(kernel_pt_table[loop], 336309847Sdelphij L2_TABLE_SIZE / PAGE_SIZE); 337275698Sdelphij } else { 338362844Sdelphij kernel_pt_table[loop].pv_va = freemempos - 339276577Sdelphij (loop % (PAGE_SIZE / L2_TABLE_SIZE_REAL)) * 340362844Sdelphij L2_TABLE_SIZE_REAL; 341275698Sdelphij kernel_pt_table[loop].pv_pa = 342362844Sdelphij kernel_pt_table[loop].pv_va - KERNVIRTADDR + 343362844Sdelphij KERNPHYSADDR; 344288143Sdelphij } 345275698Sdelphij i++; 346226048Sobrien } 347133359Sobrien /* 348133359Sobrien * Allocate a page for the system page mapped to V0x00000000 349175296Sobrien * This page will just contain the system vectors and can be 350133359Sobrien * shared by all processes. 351226048Sobrien */ 35268349Sobrien valloc_pages(systempage, 1); 353175296Sobrien 35468349Sobrien /* Allocate stacks for all modes */ 355175296Sobrien valloc_pages(irqstack, IRQ_STACK_SIZE); 35668349Sobrien valloc_pages(abtstack, ABT_STACK_SIZE); 35768349Sobrien valloc_pages(undstack, UND_STACK_SIZE); 35868349Sobrien valloc_pages(kernelstack, KSTACK_PAGES); 35968349Sobrien alloc_pages(minidataclean.pv_pa, 1); 360175296Sobrien valloc_pages(msgbufpv, round_page(MSGBUF_SIZE) / PAGE_SIZE); 36168349Sobrien /* 362175296Sobrien * Now we start construction of the L1 page table 36368349Sobrien * We start by mapping the L2 page tables into the L1. 36468349Sobrien * This means that we can replace L1 mappings later on if necessary 36568349Sobrien */ 36668349Sobrien l1pagetable = kernel_l1pt.pv_va; 367175296Sobrien 36868349Sobrien /* Map the L2 pages tables in the L1 page table */ 369175296Sobrien pmap_link_l2pt(l1pagetable, ARM_VECTORS_HIGH, 37068349Sobrien &kernel_pt_table[KERNEL_PT_SYS]); 371337827Seadler for (i = 0; i < KERNEL_PT_KERN_NUM; i++) 372337827Seadler pmap_link_l2pt(l1pagetable, KERNBASE + i * 0x100000, 373337827Seadler &kernel_pt_table[KERNEL_PT_KERN + i]); 374337827Seadler pmap_map_chunk(l1pagetable, KERNBASE, KERNPHYSADDR, 375337827Seadler (((uint32_t)(lastaddr) - KERNBASE) + PAGE_SIZE) & ~(PAGE_SIZE - 1), 376337827Seadler VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 377360521Sdelphij afterkern = round_page((lastaddr + L1_S_SIZE) & ~(L1_S_SIZE 378337827Seadler - 1)); 379337827Seadler for (i = 0; i < KERNEL_PT_AFKERNEL_NUM; i++) { 380337827Seadler pmap_link_l2pt(l1pagetable, afterkern + i * 0x00100000, 381360521Sdelphij &kernel_pt_table[KERNEL_PT_AFKERNEL + i]); 382226048Sobrien } 383133359Sobrien pmap_map_entry(l1pagetable, afterkern, minidataclean.pv_pa, 384226048Sobrien VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 385133359Sobrien 386284237Sdelphij 387284237Sdelphij /* Map the vector page. */ 388284237Sdelphij pmap_map_entry(l1pagetable, ARM_VECTORS_HIGH, systempage.pv_pa, 389226048Sobrien VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 390175296Sobrien /* Map the stack pages */ 391175296Sobrien pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa, 392226048Sobrien IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 393226048Sobrien pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa, 394175296Sobrien ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 395226048Sobrien pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa, 396267843Sdelphij UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 397298192Sdelphij pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa, 398337827Seadler KSTACK_PAGES * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 399298192Sdelphij 400298192Sdelphij pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa, 401298192Sdelphij L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 402175296Sobrien pmap_map_chunk(l1pagetable, msgbufpv.pv_va, msgbufpv.pv_pa, 403133359Sobrien MSGBUF_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 404175296Sobrien 405175296Sobrien 40668349Sobrien for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { 407226048Sobrien pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va, 408186690Sobrien kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE, 409159764Sobrien VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 410175296Sobrien } 411159764Sobrien 412175296Sobrien pmap_devmap_bootstrap(l1pagetable, kb920x_devmap); 413175296Sobrien cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); 414175296Sobrien setttb(kernel_l1pt.pv_pa); 415226048Sobrien cpu_tlb_flushID(); 416175296Sobrien cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)); 417159764Sobrien cninit(); 418226048Sobrien memsize = board_init(); 419186690Sobrien physmem = memsize / PAGE_SIZE; 420175296Sobrien 421226048Sobrien /* 422226048Sobrien * Pages were allocated during the secondary bootstrap for the 423175296Sobrien * stacks for different CPU modes. 424226048Sobrien * We must now set the r13 registers in the different CPU modes to 425226048Sobrien * point to these stacks. 426175296Sobrien * Since the ARM stacks use STMFD etc. we must set r13 to the top end 427159764Sobrien * of the stack memory. 428175296Sobrien */ 429159764Sobrien 430337827Seadler cpu_control(CPU_CONTROL_MMU_ENABLE, CPU_CONTROL_MMU_ENABLE); 431337827Seadler set_stackptr(PSR_IRQ32_MODE, 432337827Seadler irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE); 433337827Seadler set_stackptr(PSR_ABT32_MODE, 434337827Seadler abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE); 435337827Seadler set_stackptr(PSR_UND32_MODE, 436337827Seadler undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE); 437337827Seadler 438337827Seadler 439337827Seadler 440337827Seadler /* 441337827Seadler * We must now clean the cache again.... 442337827Seadler * Cleaning may be done by reading new data to displace any 443337827Seadler * dirty data in the cache. This will have happened in setttb() 444337827Seadler * but since we are boot strapping the addresses used for the read 445337827Seadler * may have just been remapped and thus the cache could be out 446337827Seadler * of sync. A re-clean after the switch will cure this. 447337827Seadler * After booting there are no gross reloations of the kernel thus 448337827Seadler * this problem will not occur after initarm(). 449337827Seadler */ 450337827Seadler cpu_idcache_wbinv_all(); 451337827Seadler 452337827Seadler /* Set stack for exception handlers */ 453337827Seadler 454337827Seadler data_abort_handler_address = (u_int)data_abort_handler; 455337827Seadler prefetch_abort_handler_address = (u_int)prefetch_abort_handler; 456337827Seadler undefined_handler_address = (u_int)undefinedinstruction_bounce; 457337827Seadler undefined_init(); 458337827Seadler 459337827Seadler proc_linkup(&proc0, &ksegrp0, &thread0); 460337827Seadler thread0.td_kstack = kernelstack.pv_va; 461337827Seadler thread0.td_pcb = (struct pcb *) 462337827Seadler (thread0.td_kstack + KSTACK_PAGES * PAGE_SIZE) - 1; 463337827Seadler thread0.td_pcb->pcb_flags = 0; 464337827Seadler thread0.td_frame = &proc0_tf; 465337827Seadler pcpup->pc_curpcb = thread0.td_pcb; 466337827Seadler 467337827Seadler arm_vector_init(ARM_VECTORS_HIGH, ARM_VEC_ALL); 468337827Seadler 469337827Seadler pmap_curmaxkvaddr = afterkern + 0x100000 * (KERNEL_PT_KERN_NUM - 1); 470337827Seadler /* 471337827Seadler * ARM_USE_SMALL_ALLOC uses dump_avail, so it must be filled before 472337827Seadler * calling pmap_bootstrap. 473337827Seadler */ 474337827Seadler dump_avail[0] = KERNPHYSADDR; 475337827Seadler dump_avail[1] = KERNPHYSADDR + memsize; 476337827Seadler dump_avail[2] = 0; 477337827Seadler dump_avail[3] = 0; 478337827Seadler 479337827Seadler pmap_bootstrap(freemempos, 480337827Seadler KERNVIRTADDR + 3 * memsize, 481337827Seadler &kernel_l1pt); 482337827Seadler msgbufp = (void*)msgbufpv.pv_va; 483337827Seadler msgbufinit(msgbufp, MSGBUF_SIZE); 484337827Seadler mutex_init(); 485337827Seadler 486337827Seadler i = 0; 487337827Seadler 488337827Seadler phys_avail[0] = virtual_avail - KERNVIRTADDR + KERNPHYSADDR; 489175296Sobrien phys_avail[1] = KERNPHYSADDR + memsize; 490226048Sobrien phys_avail[2] = 0; 491226048Sobrien phys_avail[3] = 0; 492175296Sobrien /* Do basic tuning, hz etc */ 493328874Seadler init_param1(); 494275680Strasz init_param2(physmem); 495175296Sobrien avail_end = KERNPHYSADDR + memsize - 1; 49668349Sobrien kdb_init(); 49768349Sobrien return ((void *)(kernelstack.pv_va + USPACE_SVC_STACK_TOP - 498191736Sobrien sizeof(struct pcb))); 499175296Sobrien} 50068349Sobrien