at91_machdep.c revision 163521
152284Sobrien/*- 252284Sobrien * Copyright (c) 1994-1998 Mark Brinicombe. 352284Sobrien * Copyright (c) 1994 Brini. 452284Sobrien * All rights reserved. 552284Sobrien * 652284Sobrien * This code is derived from software written for Brini by Mark Brinicombe 752284Sobrien * 852284Sobrien * Redistribution and use in source and binary forms, with or without 952284Sobrien * modification, are permitted provided that the following conditions 1052284Sobrien * are met: 1152284Sobrien * 1. Redistributions of source code must retain the above copyright 1252284Sobrien * notice, this list of conditions and the following disclaimer. 1352284Sobrien * 2. Redistributions in binary form must reproduce the above copyright 1452284Sobrien * notice, this list of conditions and the following disclaimer in the 1552284Sobrien * documentation and/or other materials provided with the distribution. 1652284Sobrien * 3. All advertising materials mentioning features or use of this software 1752284Sobrien * must display the following acknowledgement: 1852284Sobrien * This product includes software developed by Brini. 1952284Sobrien * 4. The name of the company nor the name of the author may be used to 2052284Sobrien * endorse or promote products derived from this software without specific 2152284Sobrien * prior written permission. 2252284Sobrien * 2352284Sobrien * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED 2452284Sobrien * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 2552284Sobrien * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 2652284Sobrien * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 2752284Sobrien * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 2852284Sobrien * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 2952284Sobrien * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3052284Sobrien * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3152284Sobrien * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3252284Sobrien * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3352284Sobrien * SUCH DAMAGE. 3452284Sobrien * 3552284Sobrien * RiscBSD kernel project 3652284Sobrien * 3752284Sobrien * machdep.c 3852284Sobrien * 3952284Sobrien * Machine dependant functions for kernel setup 4052284Sobrien * 4152284Sobrien * This file needs a lot of work. 4252284Sobrien * 4352284Sobrien * Created : 17/09/94 4452284Sobrien */ 4552284Sobrien 4652284Sobrien#include "opt_msgbuf.h" 4752284Sobrien#include "opt_ddb.h" 4852284Sobrien#include "opt_at91.h" 4952284Sobrien 5052284Sobrien#include <sys/cdefs.h> 5152284Sobrien__FBSDID("$FreeBSD: head/sys/arm/at91/kb920x_machdep.c 163521 2006-10-20 07:03:57Z imp $"); 5252284Sobrien 5352284Sobrien#define _ARM32_BUS_DMA_PRIVATE 5452284Sobrien#include <sys/param.h> 5552284Sobrien#include <sys/systm.h> 5652284Sobrien#include <sys/sysproto.h> 5752284Sobrien#include <sys/signalvar.h> 5852284Sobrien#include <sys/imgact.h> 5952284Sobrien#include <sys/kernel.h> 6052284Sobrien#include <sys/ktr.h> 6152284Sobrien#include <sys/linker.h> 6252284Sobrien#include <sys/lock.h> 6352284Sobrien#include <sys/malloc.h> 6452284Sobrien#include <sys/mutex.h> 6552284Sobrien#include <sys/pcpu.h> 6652284Sobrien#include <sys/proc.h> 6752284Sobrien#include <sys/ptrace.h> 6852284Sobrien#include <sys/cons.h> 6952284Sobrien#include <sys/bio.h> 7052284Sobrien#include <sys/bus.h> 7152284Sobrien#include <sys/buf.h> 7252284Sobrien#include <sys/exec.h> 7352284Sobrien#include <sys/kdb.h> 7452284Sobrien#include <sys/msgbuf.h> 7552284Sobrien#include <machine/reg.h> 7652284Sobrien#include <machine/cpu.h> 7752284Sobrien 7852284Sobrien#include <vm/vm.h> 7952284Sobrien#include <vm/pmap.h> 8052284Sobrien#include <vm/vm.h> 8152284Sobrien#include <vm/vm_object.h> 8252284Sobrien#include <vm/vm_page.h> 8352284Sobrien#include <vm/vm_pager.h> 8452284Sobrien#include <vm/vm_map.h> 8552284Sobrien#include <vm/vnode_pager.h> 8652284Sobrien#include <machine/pmap.h> 8752284Sobrien#include <machine/vmparam.h> 8852284Sobrien#include <machine/pcb.h> 8952284Sobrien#include <machine/undefined.h> 9052284Sobrien#include <machine/machdep.h> 9152284Sobrien#include <machine/metadata.h> 9252284Sobrien#include <machine/armreg.h> 9352284Sobrien#include <machine/bus.h> 9452284Sobrien#include <sys/reboot.h> 9552284Sobrien 9652284Sobrien#include <arm/at91/at91rm92reg.h> 9752284Sobrien#include <arm/at91/at91_piovar.h> 9852284Sobrien#include <arm/at91/at91_pio_rm9200.h> 9952284Sobrien 10052284Sobrien#define KERNEL_PT_SYS 0 /* Page table for mapping proc0 zero page */ 10152284Sobrien#define KERNEL_PT_KERN 1 10252284Sobrien#define KERNEL_PT_KERN_NUM 22 10352284Sobrien#define KERNEL_PT_AFKERNEL KERNEL_PT_KERN + KERNEL_PT_KERN_NUM /* L2 table for mapping after kernel */ 10452284Sobrien#define KERNEL_PT_AFKERNEL_NUM 5 10552284Sobrien 10652284Sobrien/* this should be evenly divisable by PAGE_SIZE / L2_TABLE_SIZE_REAL (or 4) */ 10752284Sobrien#define NUM_KERNEL_PTS (KERNEL_PT_AFKERNEL + KERNEL_PT_AFKERNEL_NUM) 10852284Sobrien 10952284Sobrien/* Define various stack sizes in pages */ 11052284Sobrien#define IRQ_STACK_SIZE 1 11152284Sobrien#define ABT_STACK_SIZE 1 11252284Sobrien#define UND_STACK_SIZE 1 11352284Sobrien 11452284Sobrienextern u_int data_abort_handler_address; 11552284Sobrienextern u_int prefetch_abort_handler_address; 11652284Sobrienextern u_int undefined_handler_address; 11752284Sobrien 11852284Sobrienstruct pv_addr kernel_pt_table[NUM_KERNEL_PTS]; 11952284Sobrien 12052284Sobrienextern void *_end; 12152284Sobrien 12252284Sobrienextern int *end; 12352284Sobrien 12452284Sobrienstruct pcpu __pcpu; 12552284Sobrienstruct pcpu *pcpup = &__pcpu; 12652284Sobrien 12752284Sobrien/* Physical and virtual addresses for some global pages */ 12852284Sobrien 12952284Sobrienvm_paddr_t phys_avail[10]; 13052284Sobrienvm_paddr_t dump_avail[4]; 13152284Sobrienvm_offset_t physical_pages; 13252284Sobrienvm_offset_t clean_sva, clean_eva; 13352284Sobrien 13452284Sobrienstruct pv_addr systempage; 13552284Sobrienstruct pv_addr msgbufpv; 13652284Sobrienstruct pv_addr irqstack; 13752284Sobrienstruct pv_addr undstack; 13852284Sobrienstruct pv_addr abtstack; 13952284Sobrienstruct pv_addr kernelstack; 14052284Sobrienstruct pv_addr minidataclean; 14152284Sobrien 14252284Sobrienstatic struct trapframe proc0_tf; 14352284Sobrien 14452284Sobrien/* Static device mappings. */ 14552284Sobrienstatic const struct pmap_devmap kb920x_devmap[] = { 14652284Sobrien /* 14752284Sobrien * Map the on-board devices VA == PA so that we can access them 14852284Sobrien * with the MMU on or off. 14952284Sobrien */ 15052284Sobrien { 15152284Sobrien /* 15252284Sobrien * This at least maps the interrupt controller, the UART 15352284Sobrien * and the timer. Other devices should use newbus to 15452284Sobrien * map their memory anyway. 15552284Sobrien */ 15652284Sobrien 0xdff00000, 15752284Sobrien 0xfff00000, 15852284Sobrien 0x100000, 15952284Sobrien VM_PROT_READ|VM_PROT_WRITE, 16052284Sobrien PTE_NOCACHE, 16152284Sobrien }, 16252284Sobrien /* 16352284Sobrien * We can't just map the OHCI registers VA == PA, because 16452284Sobrien * AT91RM92_OHCI_BASE belongs to the userland address space. 16552284Sobrien * We could just choose a different virtual address, but a better 16652284Sobrien * solution would probably be to just use pmap_mapdev() to allocate 16752284Sobrien * KVA, as we don't need the OHCI controller before the vm 16852284Sobrien * initialization is done. However, the AT91 resource allocation 16952284Sobrien * system doesn't know how to use pmap_mapdev() yet. 17052284Sobrien */ 17152284Sobrien#if 0 17252284Sobrien { 17352284Sobrien /* 17452284Sobrien * Add the ohci controller, and anything else that might be 17552284Sobrien * on this chip select for a VA/PA mapping. 17652284Sobrien */ 17752284Sobrien AT91RM92_OHCI_BASE, 17852284Sobrien AT91RM92_OHCI_BASE, 17952284Sobrien AT91RM92_OHCI_SIZE, 18052284Sobrien VM_PROT_READ|VM_PROT_WRITE, 18152284Sobrien PTE_NOCACHE, 18252284Sobrien }, 18352284Sobrien#endif 18452284Sobrien { 18552284Sobrien 0, 18652284Sobrien 0, 18752284Sobrien 0, 18852284Sobrien 0, 18952284Sobrien 0, 19052284Sobrien } 19152284Sobrien}; 19252284Sobrien 19352284Sobrien#define SDRAM_START 0xa0000000 19452284Sobrien 19552284Sobrien#ifdef DDB 19652284Sobrienextern vm_offset_t ksym_start, ksym_end; 19752284Sobrien#endif 19852284Sobrien 19952284Sobrienstatic long 20052284Sobrienramsize(void) 20152284Sobrien{ 20252284Sobrien uint32_t *SDRAMC = (uint32_t *)(AT91RM92_BASE + AT91RM92_SDRAMC_BASE); 20352284Sobrien uint32_t cr, mr; 20452284Sobrien int banks, rows, cols, bw; 20552284Sobrien 20652284Sobrien cr = SDRAMC[AT91RM92_SDRAMC_CR / 4]; 20752284Sobrien mr = SDRAMC[AT91RM92_SDRAMC_MR / 4]; 20852284Sobrien bw = (mr & AT91RM92_SDRAMC_MR_DBW_16) ? 1 : 2; 20952284Sobrien banks = (cr & AT91RM92_SDRAMC_CR_NB_4) ? 2 : 1; 21052284Sobrien rows = ((cr & AT91RM92_SDRAMC_CR_NR_MASK) >> 2) + 11; 21152284Sobrien cols = (cr & AT91RM92_SDRAMC_CR_NC_MASK) + 8; 21252284Sobrien return (1 << (cols + rows + banks + bw)); 21352284Sobrien} 21452284Sobrien 21552284Sobrienstatic long 21652284Sobrienboard_init(void) 21752284Sobrien{ 21852284Sobrien /* 21952284Sobrien * Since the USART supprots RS-485 multidrop mode, it allows the 22052284Sobrien * TX pins to float. However, for RS-232 operations, we don't want 22152284Sobrien * these pins to float. Instead, they should be pulled up to avoid 22252284Sobrien * mismatches. Linux does something similar when it configures the 22352284Sobrien * TX lines. This implies that we also allow the RX lines to float 22452284Sobrien * rather than be in the state they are left in by the boot loader. 22552284Sobrien * Since they are input pins, I think that this is the right thing 22652284Sobrien * to do. 22752284Sobrien */ 22852284Sobrien 22952284Sobrien /* PIOA's A periph: Turn USART 0 and 2's TX/RX pins */ 23052284Sobrien at91_pio_use_periph_a(AT91RM92_PIOA_BASE, 23152284Sobrien AT91C_PA18_RXD0 | AT91C_PA22_RXD2, 0); 23252284Sobrien at91_pio_use_periph_a(AT91RM92_PIOA_BASE, 23352284Sobrien AT91C_PA17_TXD0 | AT91C_PA23_TXD2, 1); 23452284Sobrien /* PIOA's B periph: Turn USART 3's TX/RX pins */ 23552284Sobrien at91_pio_use_periph_b(AT91RM92_PIOA_BASE, AT91C_PA6_RXD3, 0); 23652284Sobrien at91_pio_use_periph_b(AT91RM92_PIOA_BASE, AT91C_PA5_TXD3, 1); 23752284Sobrien#ifdef AT91_TSC 23852284Sobrien /* We're using TC0's A1 and A2 input */ 23952284Sobrien at91_pio_use_periph_b(AT91RM92_PIOA_BASE, 24052284Sobrien AT91C_PA19_TIOA1 | AT91C_PA21_TIOA2, 0); 24152284Sobrien#endif 24252284Sobrien /* PIOB's A periph: Turn USART 1's TX/RX pins */ 24352284Sobrien at91_pio_use_periph_a(AT91RM92_PIOB_BASE, AT91C_PB21_RXD1, 0); 24452284Sobrien at91_pio_use_periph_a(AT91RM92_PIOB_BASE, AT91C_PB20_TXD1, 1); 24552284Sobrien 24652284Sobrien /* Pin assignment */ 24752284Sobrien#ifdef AT91_TSC 24852284Sobrien /* Assert PA24 low -- talk to rubidium */ 24952284Sobrien at91_pio_use_gpio(AT91RM92_PIOA_BASE, AT91C_PIO_PA24); 25052284Sobrien at91_pio_gpio_output(AT91RM92_PIOA_BASE, AT91C_PIO_PA24, 0); 25152284Sobrien at91_pio_gpio_clear(AT91RM92_PIOA_BASE, AT91C_PIO_PA24); 25252284Sobrien at91_pio_use_gpio(AT91RM92_PIOB_BASE, 25352284Sobrien AT91C_PIO_PB16 | AT91C_PIO_PB17 | AT91C_PIO_PB18 | AT91C_PIO_PB19); 25452284Sobrien#endif 25552284Sobrien 25652284Sobrien return (ramsize()); 25752284Sobrien} 25852284Sobrien 25952284Sobrienvoid * 26052284Sobrieninitarm(void *arg, void *arg2) 26152284Sobrien{ 26252284Sobrien struct pv_addr kernel_l1pt; 26352284Sobrien int loop; 26452284Sobrien u_int l1pagetable; 26552284Sobrien vm_offset_t freemempos; 26652284Sobrien vm_offset_t afterkern; 26752284Sobrien int i; 26852284Sobrien uint32_t fake_preload[35]; 26952284Sobrien uint32_t memsize; 27052284Sobrien vm_offset_t lastaddr; 27152284Sobrien#ifdef DDB 27252284Sobrien vm_offset_t zstart = 0, zend = 0; 27352284Sobrien#endif 27452284Sobrien 27552284Sobrien i = 0; 27652284Sobrien 27752284Sobrien set_cpufuncs(); 27852284Sobrien 27952284Sobrien fake_preload[i++] = MODINFO_NAME; 28052284Sobrien fake_preload[i++] = strlen("elf kernel") + 1; 28152284Sobrien strcpy((char*)&fake_preload[i++], "elf kernel"); 28252284Sobrien i += 2; 28352284Sobrien fake_preload[i++] = MODINFO_TYPE; 28452284Sobrien fake_preload[i++] = strlen("elf kernel") + 1; 28552284Sobrien strcpy((char*)&fake_preload[i++], "elf kernel"); 28652284Sobrien i += 2; 28752284Sobrien fake_preload[i++] = MODINFO_ADDR; 28852284Sobrien fake_preload[i++] = sizeof(vm_offset_t); 28952284Sobrien fake_preload[i++] = KERNBASE; 29052284Sobrien fake_preload[i++] = MODINFO_SIZE; 29152284Sobrien fake_preload[i++] = sizeof(uint32_t); 29252284Sobrien fake_preload[i++] = (uint32_t)&end - KERNBASE; 29352284Sobrien#ifdef DDB 29452284Sobrien if (*(uint32_t *)KERNVIRTADDR == MAGIC_TRAMP_NUMBER) { 29552284Sobrien fake_preload[i++] = MODINFO_METADATA|MODINFOMD_SSYM; 29652284Sobrien fake_preload[i++] = sizeof(vm_offset_t); 29752284Sobrien fake_preload[i++] = *(uint32_t *)(KERNVIRTADDR + 4); 29852284Sobrien fake_preload[i++] = MODINFO_METADATA|MODINFOMD_ESYM; 29952284Sobrien fake_preload[i++] = sizeof(vm_offset_t); 30052284Sobrien fake_preload[i++] = *(uint32_t *)(KERNVIRTADDR + 8); 30152284Sobrien lastaddr = *(uint32_t *)(KERNVIRTADDR + 8); 30252284Sobrien zend = lastaddr; 30352284Sobrien zstart = *(uint32_t *)(KERNVIRTADDR + 4); 30452284Sobrien ksym_start = zstart; 30552284Sobrien ksym_end = zend; 30652284Sobrien } else 30752284Sobrien#endif 30852284Sobrien lastaddr = (vm_offset_t)&end; 30952284Sobrien 31052284Sobrien fake_preload[i++] = 0; 31152284Sobrien fake_preload[i] = 0; 31252284Sobrien preload_metadata = (void *)fake_preload; 31352284Sobrien 31452284Sobrien 31552284Sobrien pcpu_init(pcpup, 0, sizeof(struct pcpu)); 31652284Sobrien PCPU_SET(curthread, &thread0); 31752284Sobrien 31852284Sobrien#define KERNEL_TEXT_BASE (KERNBASE) 31952284Sobrien freemempos = (lastaddr + PAGE_MASK) & ~PAGE_MASK; 32052284Sobrien /* Define a macro to simplify memory allocation */ 32152284Sobrien#define valloc_pages(var, np) \ 32252284Sobrien alloc_pages((var).pv_va, (np)); \ 32352284Sobrien (var).pv_pa = (var).pv_va + (KERNPHYSADDR - KERNVIRTADDR); 32452284Sobrien 32552284Sobrien#define alloc_pages(var, np) \ 32652284Sobrien (var) = freemempos; \ 32752284Sobrien freemempos += (np * PAGE_SIZE); \ 32852284Sobrien memset((char *)(var), 0, ((np) * PAGE_SIZE)); 32952284Sobrien 33052284Sobrien while (((freemempos - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) != 0) 33152284Sobrien freemempos += PAGE_SIZE; 33252284Sobrien valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); 33352284Sobrien for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { 33452284Sobrien if (!(loop % (PAGE_SIZE / L2_TABLE_SIZE_REAL))) { 33552284Sobrien valloc_pages(kernel_pt_table[loop], 33652284Sobrien L2_TABLE_SIZE / PAGE_SIZE); 33752284Sobrien } else { 33852284Sobrien kernel_pt_table[loop].pv_va = freemempos - 33952284Sobrien (loop % (PAGE_SIZE / L2_TABLE_SIZE_REAL)) * 34052284Sobrien L2_TABLE_SIZE_REAL; 34152284Sobrien kernel_pt_table[loop].pv_pa = 34252284Sobrien kernel_pt_table[loop].pv_va - KERNVIRTADDR + 34352284Sobrien KERNPHYSADDR; 34452284Sobrien } 34552284Sobrien i++; 34652284Sobrien } 34752284Sobrien /* 34852284Sobrien * Allocate a page for the system page mapped to V0x00000000 34952284Sobrien * This page will just contain the system vectors and can be 35052284Sobrien * shared by all processes. 35152284Sobrien */ 35252284Sobrien valloc_pages(systempage, 1); 35352284Sobrien 35452284Sobrien /* Allocate stacks for all modes */ 35552284Sobrien valloc_pages(irqstack, IRQ_STACK_SIZE); 35652284Sobrien valloc_pages(abtstack, ABT_STACK_SIZE); 35752284Sobrien valloc_pages(undstack, UND_STACK_SIZE); 35852284Sobrien valloc_pages(kernelstack, KSTACK_PAGES); 35952284Sobrien alloc_pages(minidataclean.pv_pa, 1); 36052284Sobrien valloc_pages(msgbufpv, round_page(MSGBUF_SIZE) / PAGE_SIZE); 36152284Sobrien /* 36252284Sobrien * Now we start construction of the L1 page table 36352284Sobrien * We start by mapping the L2 page tables into the L1. 36452284Sobrien * This means that we can replace L1 mappings later on if necessary 36552284Sobrien */ 36652284Sobrien l1pagetable = kernel_l1pt.pv_va; 36752284Sobrien 36852284Sobrien /* Map the L2 pages tables in the L1 page table */ 36952284Sobrien pmap_link_l2pt(l1pagetable, ARM_VECTORS_HIGH, 37052284Sobrien &kernel_pt_table[KERNEL_PT_SYS]); 37152284Sobrien for (i = 0; i < KERNEL_PT_KERN_NUM; i++) 37252284Sobrien pmap_link_l2pt(l1pagetable, KERNBASE + i * 0x100000, 37352284Sobrien &kernel_pt_table[KERNEL_PT_KERN + i]); 37452284Sobrien pmap_map_chunk(l1pagetable, KERNBASE, KERNPHYSADDR, 37552284Sobrien (((uint32_t)(lastaddr) - KERNBASE) + PAGE_SIZE) & ~(PAGE_SIZE - 1), 37652284Sobrien VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 37752284Sobrien afterkern = round_page((lastaddr + L1_S_SIZE) & ~(L1_S_SIZE 37852284Sobrien - 1)); 37952284Sobrien for (i = 0; i < KERNEL_PT_AFKERNEL_NUM; i++) { 38052284Sobrien pmap_link_l2pt(l1pagetable, afterkern + i * 0x00100000, 38152284Sobrien &kernel_pt_table[KERNEL_PT_AFKERNEL + i]); 38252284Sobrien } 38352284Sobrien pmap_map_entry(l1pagetable, afterkern, minidataclean.pv_pa, 38452284Sobrien VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 38552284Sobrien 38652284Sobrien 38752284Sobrien /* Map the vector page. */ 38852284Sobrien pmap_map_entry(l1pagetable, ARM_VECTORS_HIGH, systempage.pv_pa, 38952284Sobrien VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 39052284Sobrien /* Map the stack pages */ 39152284Sobrien pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa, 39252284Sobrien IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 39352284Sobrien pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa, 39452284Sobrien ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 39552284Sobrien pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa, 39652284Sobrien UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 39752284Sobrien pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa, 39852284Sobrien KSTACK_PAGES * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 39952284Sobrien 40052284Sobrien pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa, 40152284Sobrien L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 40252284Sobrien pmap_map_chunk(l1pagetable, msgbufpv.pv_va, msgbufpv.pv_pa, 40352284Sobrien MSGBUF_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 40452284Sobrien 40552284Sobrien 40652284Sobrien for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { 40752284Sobrien pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va, 40852284Sobrien kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE, 40952284Sobrien VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 41052284Sobrien } 41152284Sobrien 41252284Sobrien pmap_devmap_bootstrap(l1pagetable, kb920x_devmap); 41352284Sobrien cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); 41452284Sobrien setttb(kernel_l1pt.pv_pa); 41552284Sobrien cpu_tlb_flushID(); 41652284Sobrien cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)); 41752284Sobrien cninit(); 41852284Sobrien memsize = board_init(); 41952284Sobrien physmem = memsize / PAGE_SIZE; 42052284Sobrien 42152284Sobrien /* 42252284Sobrien * Pages were allocated during the secondary bootstrap for the 42352284Sobrien * stacks for different CPU modes. 42452284Sobrien * We must now set the r13 registers in the different CPU modes to 42552284Sobrien * point to these stacks. 42652284Sobrien * Since the ARM stacks use STMFD etc. we must set r13 to the top end 42752284Sobrien * of the stack memory. 42852284Sobrien */ 42952284Sobrien 43052284Sobrien cpu_control(CPU_CONTROL_MMU_ENABLE, CPU_CONTROL_MMU_ENABLE); 43152284Sobrien set_stackptr(PSR_IRQ32_MODE, 43252284Sobrien irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE); 43352284Sobrien set_stackptr(PSR_ABT32_MODE, 43452284Sobrien abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE); 43552284Sobrien set_stackptr(PSR_UND32_MODE, 43652284Sobrien undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE); 43752284Sobrien 43852284Sobrien 43952284Sobrien 44052284Sobrien /* 44152284Sobrien * We must now clean the cache again.... 44252284Sobrien * Cleaning may be done by reading new data to displace any 44352284Sobrien * dirty data in the cache. This will have happened in setttb() 44452284Sobrien * but since we are boot strapping the addresses used for the read 44552284Sobrien * may have just been remapped and thus the cache could be out 44652284Sobrien * of sync. A re-clean after the switch will cure this. 44752284Sobrien * After booting there are no gross reloations of the kernel thus 44852284Sobrien * this problem will not occur after initarm(). 44952284Sobrien */ 45052284Sobrien cpu_idcache_wbinv_all(); 45152284Sobrien 45252284Sobrien /* Set stack for exception handlers */ 45352284Sobrien 45452284Sobrien data_abort_handler_address = (u_int)data_abort_handler; 45552284Sobrien prefetch_abort_handler_address = (u_int)prefetch_abort_handler; 45652284Sobrien undefined_handler_address = (u_int)undefinedinstruction_bounce; 45752284Sobrien undefined_init(); 45852284Sobrien 45952284Sobrien proc_linkup(&proc0, &ksegrp0, &thread0); 46052284Sobrien thread0.td_kstack = kernelstack.pv_va; 46152284Sobrien thread0.td_pcb = (struct pcb *) 46252284Sobrien (thread0.td_kstack + KSTACK_PAGES * PAGE_SIZE) - 1; 46352284Sobrien thread0.td_pcb->pcb_flags = 0; 46452284Sobrien thread0.td_frame = &proc0_tf; 46552284Sobrien pcpup->pc_curpcb = thread0.td_pcb; 46652284Sobrien 46752284Sobrien arm_vector_init(ARM_VECTORS_HIGH, ARM_VEC_ALL); 46852284Sobrien 46952284Sobrien pmap_curmaxkvaddr = afterkern + 0x100000 * (KERNEL_PT_KERN_NUM - 1); 47052284Sobrien /* 47152284Sobrien * ARM_USE_SMALL_ALLOC uses dump_avail, so it must be filled before 47252284Sobrien * calling pmap_bootstrap. 47352284Sobrien */ 47452284Sobrien dump_avail[0] = KERNPHYSADDR; 47552284Sobrien dump_avail[1] = KERNPHYSADDR + memsize; 47652284Sobrien dump_avail[2] = 0; 47752284Sobrien dump_avail[3] = 0; 47852284Sobrien 47952284Sobrien pmap_bootstrap(freemempos, 48052284Sobrien KERNVIRTADDR + 3 * memsize, 48152284Sobrien &kernel_l1pt); 48252284Sobrien msgbufp = (void*)msgbufpv.pv_va; 48352284Sobrien msgbufinit(msgbufp, MSGBUF_SIZE); 48452284Sobrien mutex_init(); 48552284Sobrien 48652284Sobrien i = 0; 48752284Sobrien 48852284Sobrien phys_avail[0] = virtual_avail - KERNVIRTADDR + KERNPHYSADDR; 48952284Sobrien phys_avail[1] = KERNPHYSADDR + memsize; 49052284Sobrien phys_avail[2] = 0; 49152284Sobrien phys_avail[3] = 0; 49252284Sobrien /* Do basic tuning, hz etc */ 49352284Sobrien init_param1(); 49452284Sobrien init_param2(physmem); 49552284Sobrien avail_end = KERNPHYSADDR + memsize - 1; 49652284Sobrien kdb_init(); 49752284Sobrien return ((void *)(kernelstack.pv_va + USPACE_SVC_STACK_TOP - 49852284Sobrien sizeof(struct pcb))); 49952284Sobrien} 50052284Sobrien