void cpu_configure(void) { footbridge_intr_evcnt_attach(); /* * Since various PCI interrupts could be routed via the ICU * (for PCI devices in the bridge) we need to set up the ICU * now so that these interrupts can be established correctly * i.e. This is a hack. */ isa_intr_init(); config_rootfound("mainbus", NULL); #if defined(DEBUG) /* Debugging information */ printf("ipl_bio=%08x ipl_net=%08x ipl_tty=%08x ipl_vm=%08x\n", footbridge_imask[IPL_BIO], footbridge_imask[IPL_NET], footbridge_imask[IPL_TTY], footbridge_imask[IPL_VM]); printf("ipl_audio=%08x ipl_imp=%08x ipl_high=%08x ipl_serial=%08x\n", footbridge_imask[IPL_AUDIO], footbridge_imask[IPL_CLOCK], footbridge_imask[IPL_HIGH], footbridge_imask[IPL_SERIAL]); #endif /* defined(DEBUG) */ /* Time to start taking interrupts so lets open the flood gates .... */ (void)spl0(); }
/* * u_int initarm(...) * * Initial entry point on startup. This gets called before main() is * entered. * It should be responsible for setting up everything that must be * in place when main is called. * This includes * Taking a copy of the boot configuration structure. * Initialising the physical console so characters can be printed. * Setting up page tables for the kernel * Initialising interrupt controllers to a sane default state */ u_int initarm(void *arg) { int loop; int loop1; u_int l1pagetable; struct bootparam_tag *bootparam_p; unsigned long devcfg; /* * Since we map the on-board devices VA==PA, and the kernel * is running VA==PA, it's possible for us to initialize * the console now. */ consinit(); /* identify model */ devcfg = *((volatile unsigned long*)(EP93XX_APB_HWBASE + EP93XX_APB_SYSCON + EP93XX_SYSCON_DeviceCfg)); for (armadillo_model = &armadillo_model_table[0]; armadillo_model->devcfg; armadillo_model++) if (devcfg == armadillo_model->devcfg) break; /* Talk to the user */ printf("\nNetBSD/%s booting ...\n", armadillo_model->name); /* set some informations from bootloader */ bootparam_p = (struct bootparam_tag *)bootparam; bootconfig.dramblocks = 0; while (bootparam_p->hdr.tag != BOOTPARAM_TAG_NONE) { switch (bootparam_p->hdr.tag) { case BOOTPARAM_TAG_MEM: if (bootconfig.dramblocks < DRAM_BLOCKS) { #ifdef VERBOSE_INIT_ARM printf("dram[%d]: address=0x%08lx, size=0x%08lx\n", bootconfig.dramblocks, bootparam_p->u.mem.start, bootparam_p->u.mem.size); #endif bootconfig.dram[bootconfig.dramblocks].address = bootparam_p->u.mem.start; bootconfig.dram[bootconfig.dramblocks].pages = bootparam_p->u.mem.size / PAGE_SIZE; bootconfig.dramblocks++; } break; case BOOTPARAM_TAG_CMDLINE: #ifdef VERBOSE_INIT_ARM printf("cmdline: %s\n", bootparam_p->u.cmdline.cmdline); #endif parse_mi_bootargs(bootparam_p->u.cmdline.cmdline); break; } bootparam_p = bootparam_tag_next(bootparam_p); } /* * Heads up ... Setup the CPU / MMU / TLB functions */ if (set_cpufuncs()) panic("cpu not recognized!"); #ifdef VERBOSE_INIT_ARM printf("initarm: Configuring system ...\n"); #endif /* * Set up the variables that define the availablilty of * physical memory. For now, we're going to set * physical_freestart to 0xc0200000 (where the kernel * was loaded), and allocate the memory we need downwards. * If we get too close to the L1 table that we set up, we * will panic. We will update physical_freestart and * physical_freeend later to reflect what pmap_bootstrap() * wants to see. * * XXX pmap_bootstrap() needs an enema. */ physical_start = bootconfig.dram[0].address; physical_end = bootconfig.dram[0].address + (bootconfig.dram[0].pages * PAGE_SIZE); physical_freestart = 0xc0018000UL; physical_freeend = 0xc0200000UL; physmem = (physical_end - physical_start) / PAGE_SIZE; #ifdef VERBOSE_INIT_ARM /* Tell the user about the memory */ printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem, physical_start, physical_end - 1); #endif /* * Okay, the kernel starts 2MB in from the bottom of physical * memory. We are going to allocate our bootstrap pages downwards * from there. * * We need to allocate some fixed page tables to get the kernel * going. We allocate one page directory and a number of page * tables and store the physical addresses in the kernel_pt_table * array. * * The kernel page directory must be on a 16K boundary. The page * tables must be on 4K bounaries. What we do is allocate the * page directory on the first 16K boundary that we encounter, and * the page tables on 4K boundaries otherwise. Since we allocate * at least 3 L2 page tables, we are guaranteed to encounter at * least one 16K aligned region. */ #ifdef VERBOSE_INIT_ARM printf("Allocating page tables\n"); #endif free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE; #ifdef VERBOSE_INIT_ARM printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n", physical_freestart, free_pages, free_pages); #endif /* Define a macro to simplify memory allocation */ #define valloc_pages(var, np) \ alloc_pages((var).pv_pa, (np)); \ (var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start; #define alloc_pages(var, np) \ physical_freeend -= ((np) * PAGE_SIZE); \ if (physical_freeend < physical_freestart) \ panic("initarm: out of memory"); \ (var) = physical_freeend; \ free_pages -= (np); \ memset((char *)(var), 0, ((np) * PAGE_SIZE)); loop1 = 0; for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) { /* Are we 16KB aligned for an L1 ? */ if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0 && kernel_l1pt.pv_pa == 0) { valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); } else { valloc_pages(kernel_pt_table[loop1], L2_TABLE_SIZE / PAGE_SIZE); ++loop1; } } /* This should never be able to happen but better confirm that. */ if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0) panic("initarm: Failed to align the kernel page directory"); /* * Allocate a page for the system vectors page */ alloc_pages(systempage.pv_pa, 1); /* Allocate stacks for all modes */ valloc_pages(irqstack, IRQ_STACK_SIZE); valloc_pages(abtstack, ABT_STACK_SIZE); valloc_pages(undstack, UND_STACK_SIZE); valloc_pages(kernelstack, UPAGES); #ifdef VERBOSE_INIT_ARM printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa, irqstack.pv_va); printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa, abtstack.pv_va); printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa, undstack.pv_va); printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa, kernelstack.pv_va); #endif alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE); /* * Ok we have allocated physical pages for the primary kernel * page tables. Save physical_freeend for when we give whats left * of memory below 2Mbyte to UVM. */ physical_freeend_low = physical_freeend; #ifdef VERBOSE_INIT_ARM printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa); #endif /* * Now we start construction of the L1 page table * We start by mapping the L2 page tables into the L1. * This means that we can replace L1 mappings later on if necessary */ l1pagetable = kernel_l1pt.pv_pa; /* Map the L2 pages tables in the L1 page table */ pmap_link_l2pt(l1pagetable, ARM_VECTORS_HIGH & ~(0x00400000 - 1), &kernel_pt_table[KERNEL_PT_SYS]); for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++) pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000, &kernel_pt_table[KERNEL_PT_KERNEL + loop]); for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++) pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000, &kernel_pt_table[KERNEL_PT_VMDATA + loop]); /* update the top of the kernel VM */ pmap_curmaxkvaddr = KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000); #ifdef VERBOSE_INIT_ARM printf("Mapping kernel\n"); #endif /* Now we fill in the L2 pagetable for the kernel static code/data */ { extern char etext[], _end[]; size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE; size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE; u_int logical; textsize = (textsize + PGOFSET) & ~PGOFSET; totalsize = (totalsize + PGOFSET) & ~PGOFSET; logical = 0x00200000; /* offset of kernel in RAM */ logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, physical_start + logical, textsize, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, physical_start + logical, totalsize - textsize, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); } #ifdef VERBOSE_INIT_ARM printf("Constructing L2 page tables\n"); #endif /* Map the stack pages */ pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa, IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa, ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa, UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa, UPAGES * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa, L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va, kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); } /* Map the vector page. */ pmap_map_entry(l1pagetable, ARM_VECTORS_HIGH, systempage.pv_pa, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); /* Map the statically mapped devices. */ pmap_devmap_bootstrap(l1pagetable, armadillo9_devmap); /* * Update the physical_freestart/physical_freeend/free_pages * variables. */ { extern char _end[]; physical_freestart = physical_start + (((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) - KERNEL_BASE); physical_freeend = physical_end; free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE; } /* * Now we have the real page tables in place so we can switch to them. * Once this is done we will be running with the REAL kernel page * tables. */ /* Switch tables */ #ifdef VERBOSE_INIT_ARM printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n", physical_freestart, free_pages, free_pages); printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa); #endif cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); cpu_setttb(kernel_l1pt.pv_pa, true); cpu_tlb_flushID(); cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)); /* * Moved from cpu_startup() as data_abort_handler() references * this during uvm init */ uvm_lwp_setuarea(&lwp0, kernelstack.pv_va); #ifdef VERBOSE_INIT_ARM printf("done!\n"); #endif #ifdef VERBOSE_INIT_ARM printf("bootstrap done.\n"); #endif arm32_vector_init(ARM_VECTORS_HIGH, ARM_VEC_ALL); /* * Pages were allocated during the secondary bootstrap for the * stacks for different CPU modes. * We must now set the r13 registers in the different CPU modes to * point to these stacks. * Since the ARM stacks use STMFD etc. we must set r13 to the top end * of the stack memory. */ #ifdef VERBOSE_INIT_ARM printf("init subsystems: stacks "); #endif set_stackptr(PSR_IRQ32_MODE, irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE); set_stackptr(PSR_ABT32_MODE, abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE); set_stackptr(PSR_UND32_MODE, undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE); /* * Well we should set a data abort handler. * Once things get going this will change as we will need a proper * handler. * Until then we will use a handler that just panics but tells us * why. * Initialisation of the vectors will just panic on a data abort. * This just fills in a slightly better one. */ #ifdef VERBOSE_INIT_ARM printf("vectors "); #endif data_abort_handler_address = (u_int)data_abort_handler; prefetch_abort_handler_address = (u_int)prefetch_abort_handler; undefined_handler_address = (u_int)undefinedinstruction_bounce; /* Initialise the undefined instruction handlers */ #ifdef VERBOSE_INIT_ARM printf("undefined "); #endif undefined_init(); /* Load memory into UVM. */ #ifdef VERBOSE_INIT_ARM printf("page "); #endif uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */ uvm_page_physload(atop(physical_freestart), atop(physical_freeend), atop(physical_freestart), atop(physical_freeend), VM_FREELIST_DEFAULT); uvm_page_physload(atop(0xc0000000), atop(physical_freeend_low), atop(0xc0000000), atop(physical_freeend_low), VM_FREELIST_DEFAULT); physmem = bootconfig.dram[0].pages; for (loop = 1; loop < bootconfig.dramblocks; ++loop) { size_t start = bootconfig.dram[loop].address; size_t size = bootconfig.dram[loop].pages * PAGE_SIZE; uvm_page_physload(atop(start), atop(start + size), atop(start), atop(start + size), VM_FREELIST_DEFAULT); physmem += bootconfig.dram[loop].pages; } /* Boot strap pmap telling it where the kernel page table is */ #ifdef VERBOSE_INIT_ARM printf("pmap "); #endif pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE); /* Setup the IRQ system */ #ifdef VERBOSE_INIT_ARM printf("irq "); #endif ep93xx_intr_init(); #if NISA > 0 isa_intr_init(); #ifdef VERBOSE_INIT_ARM printf("isa "); #endif isa_armadillo9_init(ARMADILLO9_IO16_VBASE + ARMADILLO9_ISAIO, ARMADILLO9_IO16_VBASE + ARMADILLO9_ISAMEM); #endif #ifdef VERBOSE_INIT_ARM printf("done.\n"); #endif #ifdef BOOTHOWTO boothowto = BOOTHOWTO; #endif #ifdef DDB db_machine_init(); if (boothowto & RB_KDB) Debugger(); #endif /* We have our own device_register() */ evbarm_device_register = armadillo9_device_register; /* We return the new stack pointer address */ return(kernelstack.pv_va + USPACE_SVC_STACK_TOP); }
/* * u_int initarm(...) * * Initial entry point on startup. This gets called before main() is * entered. * It should be responsible for setting up everything that must be * in place when main is called. * This includes * Taking a copy of the boot configuration structure. * Initialising the physical console so characters can be printed. * Setting up page tables for the kernel * Initialising interrupt controllers to a sane default state */ u_int initarm(void *arg) { #ifdef FIXME struct bootconfig *passed_bootconfig = arg; extern char _end[]; #endif int loop; int loop1; u_int l1pagetable; paddr_t memstart; psize_t memsize; #ifdef FIXME /* Calibrate the delay loop. */ i80321_calibrate_delay(); #endif /* * Since we map the on-board devices VA==PA, and the kernel * is running VA==PA, it's possible for us to initialize * the console now. */ consinit(); #ifdef VERBOSE_INIT_ARM /* Talk to the user */ printf("\nNetBSD/tsarm booting ...\n"); #endif /* * Heads up ... Setup the CPU / MMU / TLB functions */ if (set_cpufuncs()) panic("cpu not recognized!"); /* * We are currently running with the MMU enabled */ #ifdef FIXME /* * Fetch the SDRAM start/size from the i80321 SDRAM configuration * registers. */ i80321_sdram_bounds(&obio_bs_tag, VERDE_PMMR_BASE + VERDE_MCU_BASE, &memstart, &memsize); #else memstart = 0x0; memsize = 0x2000000; #endif #ifdef VERBOSE_INIT_ARM printf("initarm: Configuring system ...\n"); #endif /* Fake bootconfig structure for the benefit of pmap.c */ /* XXX must make the memory description h/w independent */ bootconfig.dramblocks = 4; bootconfig.dram[0].address = 0x0UL; bootconfig.dram[0].pages = 0x800000UL / PAGE_SIZE; bootconfig.dram[1].address = 0x1000000UL; bootconfig.dram[1].pages = 0x800000UL / PAGE_SIZE; bootconfig.dram[2].address = 0x4000000UL; bootconfig.dram[2].pages = 0x800000UL / PAGE_SIZE; bootconfig.dram[3].address = 0x5000000UL; bootconfig.dram[3].pages = 0x800000UL / PAGE_SIZE; /* * Set up the variables that define the availablilty of * physical memory. For now, we're going to set * physical_freestart to 0x00200000 (where the kernel * was loaded), and allocate the memory we need downwards. * If we get too close to the L1 table that we set up, we * will panic. We will update physical_freestart and * physical_freeend later to reflect what pmap_bootstrap() * wants to see. * * XXX pmap_bootstrap() needs an enema. */ physical_start = bootconfig.dram[0].address; physical_end = bootconfig.dram[0].address + (bootconfig.dram[0].pages * PAGE_SIZE); physical_freestart = 0x00009000UL; physical_freeend = 0x00200000UL; physmem = (physical_end - physical_start) / PAGE_SIZE; #ifdef VERBOSE_INIT_ARM /* Tell the user about the memory */ printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem, physical_start, physical_end - 1); #endif /* * Okay, the kernel starts 2MB in from the bottom of physical * memory. We are going to allocate our bootstrap pages downwards * from there. * * We need to allocate some fixed page tables to get the kernel * going. We allocate one page directory and a number of page * tables and store the physical addresses in the kernel_pt_table * array. * * The kernel page directory must be on a 16K boundary. The page * tables must be on 4K bounaries. What we do is allocate the * page directory on the first 16K boundary that we encounter, and * the page tables on 4K boundaries otherwise. Since we allocate * at least 3 L2 page tables, we are guaranteed to encounter at * least one 16K aligned region. */ #ifdef VERBOSE_INIT_ARM printf("Allocating page tables\n"); #endif free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE; #ifdef VERBOSE_INIT_ARM printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n", physical_freestart, free_pages, free_pages); #endif /* Define a macro to simplify memory allocation */ #define valloc_pages(var, np) \ alloc_pages((var).pv_pa, (np)); \ (var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start; #define alloc_pages(var, np) \ physical_freeend -= ((np) * PAGE_SIZE); \ if (physical_freeend < physical_freestart) \ panic("initarm: out of memory"); \ (var) = physical_freeend; \ free_pages -= (np); \ memset((char *)(var), 0, ((np) * PAGE_SIZE)); loop1 = 0; for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) { /* Are we 16KB aligned for an L1 ? */ if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0 && kernel_l1pt.pv_pa == 0) { valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); } else { valloc_pages(kernel_pt_table[loop1], L2_TABLE_SIZE / PAGE_SIZE); ++loop1; } } /* This should never be able to happen but better confirm that. */ if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0) panic("initarm: Failed to align the kernel page directory"); /* * Allocate a page for the system vectors page */ alloc_pages(systempage.pv_pa, 1); /* Allocate stacks for all modes */ valloc_pages(irqstack, IRQ_STACK_SIZE); valloc_pages(abtstack, ABT_STACK_SIZE); valloc_pages(undstack, UND_STACK_SIZE); valloc_pages(kernelstack, UPAGES); #ifdef VERBOSE_INIT_ARM printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa, irqstack.pv_va); printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa, abtstack.pv_va); printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa, undstack.pv_va); printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa, kernelstack.pv_va); #endif alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE); /* * Ok we have allocated physical pages for the primary kernel * page tables. Save physical_freeend for when we give whats left * of memory below 2Mbyte to UVM. */ physical_freeend_low = physical_freeend; #ifdef VERBOSE_INIT_ARM printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa); #endif /* * Now we start construction of the L1 page table * We start by mapping the L2 page tables into the L1. * This means that we can replace L1 mappings later on if necessary */ l1pagetable = kernel_l1pt.pv_pa; /* Map the L2 pages tables in the L1 page table */ pmap_link_l2pt(l1pagetable, ARM_VECTORS_HIGH & ~(0x00400000 - 1), &kernel_pt_table[KERNEL_PT_SYS]); for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++) pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000, &kernel_pt_table[KERNEL_PT_KERNEL + loop]); for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++) pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000, &kernel_pt_table[KERNEL_PT_VMDATA + loop]); /* update the top of the kernel VM */ pmap_curmaxkvaddr = KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000); #ifdef VERBOSE_INIT_ARM printf("Mapping kernel\n"); #endif /* Now we fill in the L2 pagetable for the kernel static code/data */ { extern char etext[], _end[]; size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE; size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE; u_int logical; textsize = (textsize + PGOFSET) & ~PGOFSET; totalsize = (totalsize + PGOFSET) & ~PGOFSET; logical = 0x00200000; /* offset of kernel in RAM */ logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, physical_start + logical, textsize, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, physical_start + logical, totalsize - textsize, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); } #ifdef VERBOSE_INIT_ARM printf("Constructing L2 page tables\n"); #endif /* Map the stack pages */ pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa, IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa, ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa, UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa, UPAGES * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa, L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va, kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); } /* Map the vector page. */ pmap_map_entry(l1pagetable, ARM_VECTORS_HIGH, systempage.pv_pa, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); /* Map the statically mapped devices. */ pmap_devmap_bootstrap(l1pagetable, tsarm_devmap); /* * Update the physical_freestart/physical_freeend/free_pages * variables. */ { extern char _end[]; physical_freestart = physical_start + (((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) - KERNEL_BASE); physical_freeend = physical_end; free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE; } /* * Now we have the real page tables in place so we can switch to them. * Once this is done we will be running with the REAL kernel page * tables. */ /* Switch tables */ #ifdef VERBOSE_INIT_ARM printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n", physical_freestart, free_pages, free_pages); printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa); #endif cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); setttb(kernel_l1pt.pv_pa); cpu_tlb_flushID(); cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)); /* * Moved from cpu_startup() as data_abort_handler() references * this during uvm init */ proc0paddr = (struct user *)kernelstack.pv_va; lwp0.l_addr = proc0paddr; #ifdef VERBOSE_INIT_ARM printf("done!\n"); #endif #ifdef VERBOSE_INIT_ARM printf("bootstrap done.\n"); #endif arm32_vector_init(ARM_VECTORS_HIGH, ARM_VEC_ALL); /* * Pages were allocated during the secondary bootstrap for the * stacks for different CPU modes. * We must now set the r13 registers in the different CPU modes to * point to these stacks. * Since the ARM stacks use STMFD etc. we must set r13 to the top end * of the stack memory. */ #ifdef VERBOSE_INIT_ARM printf("init subsystems: stacks "); #endif set_stackptr(PSR_IRQ32_MODE, irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE); set_stackptr(PSR_ABT32_MODE, abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE); set_stackptr(PSR_UND32_MODE, undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE); /* * Well we should set a data abort handler. * Once things get going this will change as we will need a proper * handler. * Until then we will use a handler that just panics but tells us * why. * Initialisation of the vectors will just panic on a data abort. * This just fills in a slightly better one. */ #ifdef VERBOSE_INIT_ARM printf("vectors "); #endif data_abort_handler_address = (u_int)data_abort_handler; prefetch_abort_handler_address = (u_int)prefetch_abort_handler; undefined_handler_address = (u_int)undefinedinstruction_bounce; /* Initialise the undefined instruction handlers */ #ifdef VERBOSE_INIT_ARM printf("undefined "); #endif undefined_init(); /* Load memory into UVM. */ #ifdef VERBOSE_INIT_ARM printf("page "); #endif uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */ uvm_page_physload(atop(physical_freestart), atop(physical_freeend), atop(physical_freestart), atop(physical_freeend), VM_FREELIST_DEFAULT); uvm_page_physload(0, atop(physical_freeend_low), 0, atop(physical_freeend_low), VM_FREELIST_DEFAULT); /* * There is 32 Mb of memory on the TS-7200 in 4 8Mb chunks, so far * we've only been working with the first one mapped at 0x0. Tell * UVM about the others. */ uvm_page_physload(atop(0x1000000), atop(0x1800000), atop(0x1000000), atop(0x1800000), VM_FREELIST_DEFAULT); uvm_page_physload(atop(0x4000000), atop(0x4800000), atop(0x4000000), atop(0x4800000), VM_FREELIST_DEFAULT); uvm_page_physload(atop(0x5000000), atop(0x5800000), atop(0x5000000), atop(0x5800000), VM_FREELIST_DEFAULT); physmem = 0x2000000 / PAGE_SIZE; /* Boot strap pmap telling it where the kernel page table is */ #ifdef VERBOSE_INIT_ARM printf("pmap "); #endif pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE); /* Setup the IRQ system */ #ifdef VERBOSE_INIT_ARM printf("irq "); #endif ep93xx_intr_init(); #if NISA > 0 isa_intr_init(); #ifdef VERBOSE_INIT_ARM printf("isa "); #endif isa_tsarm_init(TS7XXX_IO16_VBASE + TS7XXX_ISAIO, TS7XXX_IO16_VBASE + TS7XXX_ISAMEM); #endif #ifdef VERBOSE_INIT_ARM printf("done.\n"); #endif #ifdef BOOTHOWTO boothowto = BOOTHOWTO; #endif #if NKSYMS || defined(DDB) || defined(LKM) /* Firmware doesn't load symbols. */ ksyms_init(0, NULL, NULL); #endif #ifdef DDB db_machine_init(); if (boothowto & RB_KDB) Debugger(); #endif /* We return the new stack pointer address */ return(kernelstack.pv_va + USPACE_SVC_STACK_TOP); }