diff options
Diffstat (limited to 'sys/arm/at91/at91sam9_machdep.c')
| -rw-r--r-- | sys/arm/at91/at91sam9_machdep.c | 420 |
1 files changed, 0 insertions, 420 deletions
diff --git a/sys/arm/at91/at91sam9_machdep.c b/sys/arm/at91/at91sam9_machdep.c deleted file mode 100644 index c3e5613..0000000 --- a/sys/arm/at91/at91sam9_machdep.c +++ /dev/null @@ -1,420 +0,0 @@ -/*- - * Copyright (c) 1994-1998 Mark Brinicombe. - * Copyright (c) 1994 Brini. - * All rights reserved. - * - * This code is derived from software written for Brini by Mark Brinicombe - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by Brini. - * 4. The name of the company nor the name of the author may be used to - * endorse or promote products derived from this software without specific - * prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, - * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * RiscBSD kernel project - * - * machdep.c - * - * Machine dependant functions for kernel setup - * - * This file needs a lot of work. - * - * Created : 17/09/94 - */ - -#include "opt_msgbuf.h" - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#define _ARM32_BUS_DMA_PRIVATE -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/sysproto.h> -#include <sys/signalvar.h> -#include <sys/imgact.h> -#include <sys/kernel.h> -#include <sys/ktr.h> -#include <sys/linker.h> -#include <sys/lock.h> -#include <sys/malloc.h> -#include <sys/mutex.h> -#include <sys/pcpu.h> -#include <sys/proc.h> -#include <sys/ptrace.h> -#include <sys/cons.h> -#include <sys/bio.h> -#include <sys/bus.h> -#include <sys/buf.h> -#include <sys/exec.h> -#include <sys/kdb.h> -#include <sys/msgbuf.h> -#include <machine/reg.h> -#include <machine/cpu.h> - -#include <vm/vm.h> -#include <vm/pmap.h> -#include <vm/vm_object.h> -#include <vm/vm_page.h> -#include <vm/vm_pager.h> -#include <vm/vm_map.h> -#include <machine/pmap.h> -#include <machine/vmparam.h> -#include <machine/pcb.h> -#include <machine/undefined.h> -#include <machine/machdep.h> -#include <machine/metadata.h> -#include <machine/armreg.h> -#include <machine/bus.h> -#include <sys/reboot.h> - -#include <arm/at91/at91board.h> -#include <arm/at91/at91sam9g20reg.h> -#include <arm/at91/at91_piovar.h> -#include <arm/at91/at91_pio_rm9200.h> - -#define KERNEL_PT_SYS 0 /* Page table for mapping proc0 zero page */ -#define KERNEL_PT_KERN 1 -#define KERNEL_PT_KERN_NUM 22 -#define KERNEL_PT_AFKERNEL KERNEL_PT_KERN + KERNEL_PT_KERN_NUM /* L2 table for mapping after kernel */ -#define KERNEL_PT_AFKERNEL_NUM 5 - -/* this should be evenly divisable by PAGE_SIZE / L2_TABLE_SIZE_REAL (or 4) */ -#define NUM_KERNEL_PTS (KERNEL_PT_AFKERNEL + KERNEL_PT_AFKERNEL_NUM) - -/* Define various stack sizes in pages */ -#define IRQ_STACK_SIZE 1 -#define ABT_STACK_SIZE 1 -#define UND_STACK_SIZE 1 - -extern u_int data_abort_handler_address; -extern u_int prefetch_abort_handler_address; -extern u_int undefined_handler_address; - -struct pv_addr kernel_pt_table[NUM_KERNEL_PTS]; - -extern void *_end; - -extern int *end; - -struct pcpu __pcpu; -struct pcpu *pcpup = &__pcpu; - -/* Physical and virtual addresses for some global pages */ - -vm_paddr_t phys_avail[10]; -vm_paddr_t dump_avail[4]; -vm_offset_t physical_pages; - -struct pv_addr systempage; -struct pv_addr msgbufpv; -struct pv_addr irqstack; -struct pv_addr undstack; -struct pv_addr abtstack; -struct pv_addr kernelstack; - -static void *boot_arg1; -static void *boot_arg2; - -static struct trapframe proc0_tf; - -/* Static device mappings. */ -static const struct pmap_devmap at91sam9_devmap[] = { - /* - * Map the on-board devices VA == PA so that we can access them - * with the MMU on or off. - */ - { - /* - * This at least maps the interrupt controller, the UART - * and the timer. Other devices should use newbus to - * map their memory anyway. - */ - 0xdff00000, - 0xfff00000, - 0x100000, - VM_PROT_READ|VM_PROT_WRITE, - PTE_NOCACHE, - }, - /* - * We can't just map the OHCI registers VA == PA, because - * AT91RM92_OHCI_BASE belongs to the userland address space. - * We could just choose a different virtual address, but a better - * solution would probably be to just use pmap_mapdev() to allocate - * KVA, as we don't need the OHCI controller before the vm - * initialization is done. However, the AT91 resource allocation - * system doesn't know how to use pmap_mapdev() yet. - */ - { - /* - * Add the ohci controller, and anything else that might be - * on this chip select for a VA/PA mapping. - */ - AT91SAM9G20_OHCI_BASE, - AT91SAM9G20_OHCI_PA_BASE, - AT91SAM9G20_OHCI_SIZE, - VM_PROT_READ|VM_PROT_WRITE, - PTE_NOCACHE, - }, - { - AT91SAM9G20_NAND_BASE, - AT91SAM9G20_NAND_PA_BASE, - AT91SAM9G20_NAND_SIZE, - VM_PROT_READ|VM_PROT_WRITE, - PTE_NOCACHE, - }, - { - 0, - 0, - 0, - 0, - 0, - } -}; - -long -at91_ramsize(void) -{ -#if 0 - uint32_t *SDRAMC = (uint32_t *)(AT91SAM9G20_BASE + AT91SAM9G20_SDRAMC_BASE); - uint32_t cr, mr; - int banks, rows, cols, bw; - - cr = SDRAMC[AT91SAM9G20_SDRAMC_CR / 4]; - mr = SDRAMC[AT91SAM9G20_SDRAMC_MR / 4]; - bw = (mr & AT91SAM9G20_SDRAMC_MR_DBW_16) ? 1 : 2; - banks = (cr & AT91SAM9G20_SDRAMC_CR_NB_4) ? 2 : 1; - rows = ((cr & AT91SAM9G20_SDRAMC_CR_NR_MASK) >> 2) + 11; - cols = (cr & AT91SAM9G20_SDRAMC_CR_NC_MASK) + 8; - return (1 << (cols + rows + banks + bw)); -#endif - return 64*1024*1024; -} - -void * -initarm(void *arg, void *arg2) -{ - struct pv_addr kernel_l1pt; - struct pv_addr dpcpu; - int loop, i; - u_int l1pagetable; - vm_offset_t freemempos; - vm_offset_t afterkern; - uint32_t memsize; - vm_offset_t lastaddr; - - boot_arg1 = arg; - boot_arg2 = arg2; - - - set_cpufuncs(); - lastaddr = fake_preload_metadata(); - pcpu_init(pcpup, 0, sizeof(struct pcpu)); - PCPU_SET(curthread, &thread0); - - freemempos = (lastaddr + PAGE_MASK) & ~PAGE_MASK; - /* Define a macro to simplify memory allocation */ -#define valloc_pages(var, np) \ - alloc_pages((var).pv_va, (np)); \ - (var).pv_pa = (var).pv_va + (KERNPHYSADDR - KERNVIRTADDR); - -#define alloc_pages(var, np) \ - (var) = freemempos; \ - freemempos += (np * PAGE_SIZE); \ - memset((char *)(var), 0, ((np) * PAGE_SIZE)); - - while (((freemempos - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) != 0) - freemempos += PAGE_SIZE; - valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); - for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { - if (!(loop % (PAGE_SIZE / L2_TABLE_SIZE_REAL))) { - valloc_pages(kernel_pt_table[loop], - L2_TABLE_SIZE / PAGE_SIZE); - } else { - kernel_pt_table[loop].pv_va = freemempos - - (loop % (PAGE_SIZE / L2_TABLE_SIZE_REAL)) * - L2_TABLE_SIZE_REAL; - kernel_pt_table[loop].pv_pa = - kernel_pt_table[loop].pv_va - KERNVIRTADDR + - KERNPHYSADDR; - } - i++; - } - /* - * Allocate a page for the system page mapped to V0x00000000 - * This page will just contain the system vectors and can be - * shared by all processes. - */ - valloc_pages(systempage, 1); - - /* Allocate dynamic per-cpu area. */ - valloc_pages(dpcpu, DPCPU_SIZE / PAGE_SIZE); - dpcpu_init((void *)dpcpu.pv_va, 0); - - /* 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, KSTACK_PAGES); - valloc_pages(msgbufpv, round_page(MSGBUF_SIZE) / PAGE_SIZE); - - /* - * 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_va; - - /* Map the L2 pages tables in the L1 page table */ - pmap_link_l2pt(l1pagetable, ARM_VECTORS_HIGH, - &kernel_pt_table[KERNEL_PT_SYS]); - for (i = 0; i < KERNEL_PT_KERN_NUM; i++) - pmap_link_l2pt(l1pagetable, KERNBASE + i * L1_S_SIZE, - &kernel_pt_table[KERNEL_PT_KERN + i]); - pmap_map_chunk(l1pagetable, KERNBASE, PHYSADDR, - (((uint32_t)lastaddr - KERNBASE) + PAGE_SIZE) & ~(PAGE_SIZE - 1), - VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); - afterkern = round_page((lastaddr + L1_S_SIZE) & ~(L1_S_SIZE - 1)); - for (i = 0; i < KERNEL_PT_AFKERNEL_NUM; i++) { - pmap_link_l2pt(l1pagetable, afterkern + i * L1_S_SIZE, - &kernel_pt_table[KERNEL_PT_AFKERNEL + i]); - } - - /* Map the vector page. */ - pmap_map_entry(l1pagetable, ARM_VECTORS_HIGH, systempage.pv_pa, - VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); - - /* Map the DPCPU pages */ - pmap_map_chunk(l1pagetable, dpcpu.pv_va, dpcpu.pv_pa, DPCPU_SIZE, - VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); - - /* 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, - KSTACK_PAGES * 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); - pmap_map_chunk(l1pagetable, msgbufpv.pv_va, msgbufpv.pv_pa, - MSGBUF_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); - - 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); - } - - pmap_devmap_bootstrap(l1pagetable, at91sam9_devmap); - 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)); - cninit(); - memsize = board_init(); - physmem = memsize / PAGE_SIZE; - - /* - * 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. - */ - cpu_control(CPU_CONTROL_MMU_ENABLE, CPU_CONTROL_MMU_ENABLE); - 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); - - /* - * We must now clean the cache again.... - * Cleaning may be done by reading new data to displace any - * dirty data in the cache. This will have happened in setttb() - * but since we are boot strapping the addresses used for the read - * may have just been remapped and thus the cache could be out - * of sync. A re-clean after the switch will cure this. - * After booting there are no gross relocations of the kernel thus - * this problem will not occur after initarm(). - */ - cpu_idcache_wbinv_all(); - - /* Set stack for exception handlers */ - - 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; - undefined_init(); - - proc_linkup0(&proc0, &thread0); - thread0.td_kstack = kernelstack.pv_va; - thread0.td_pcb = (struct pcb *) - (thread0.td_kstack + KSTACK_PAGES * PAGE_SIZE) - 1; - thread0.td_pcb->pcb_flags = 0; - thread0.td_frame = &proc0_tf; - pcpup->pc_curpcb = thread0.td_pcb; - - arm_vector_init(ARM_VECTORS_HIGH, ARM_VEC_ALL); - - pmap_curmaxkvaddr = afterkern + L1_S_SIZE * (KERNEL_PT_KERN_NUM - 1); - - /* - * ARM_USE_SMALL_ALLOC uses dump_avail, so it must be filled before - * calling pmap_bootstrap. - */ - dump_avail[0] = PHYSADDR; - dump_avail[1] = PHYSADDR + memsize; - dump_avail[2] = 0; - dump_avail[3] = 0; - - pmap_bootstrap(freemempos, - KERNVIRTADDR + 3 * memsize, - &kernel_l1pt); - msgbufp = (void*)msgbufpv.pv_va; - msgbufinit(msgbufp, MSGBUF_SIZE); - mutex_init(); - - i = 0; -#if PHYSADDR != KERNPHYSADDR - phys_avail[i++] = PHYSADDR; - phys_avail[i++] = KERNPHYSADDR; -#endif - phys_avail[i++] = virtual_avail - KERNVIRTADDR + KERNPHYSADDR; - phys_avail[i++] = PHYSADDR + memsize; - phys_avail[i++] = 0; - phys_avail[i++] = 0; - /* Do basic tuning, hz etc */ - init_param1(); - init_param2(physmem); - kdb_init(); - return ((void *)(kernelstack.pv_va + USPACE_SVC_STACK_TOP - - sizeof(struct pcb))); -} |
