| 0,0 → 1,225 |
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| /* |
| * Copyright (c) 2007 Michal Kebrt |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - 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. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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. |
| */ |
| |
| /** @addtogroup arm32 |
| * @{ |
| */ |
| /** @file |
| * @brief ARM32 architecture specific functions. |
| */ |
| |
| #include <arch.h> |
| #include <config.h> |
| #include <genarch/fb/fb.h> |
| #include <genarch/fb/visuals.h> |
| #include <genarch/drivers/dsrln/dsrlnin.h> |
| #include <genarch/drivers/dsrln/dsrlnout.h> |
| #include <genarch/srln/srln.h> |
| #include <sysinfo/sysinfo.h> |
| #include <console/console.h> |
| #include <ddi/irq.h> |
| #include <arch/drivers/gxemul.h> |
| #include <print.h> |
| #include <config.h> |
| #include <interrupt.h> |
| #include <arch/regutils.h> |
| #include <userspace.h> |
| #include <macros.h> |
| #include <string.h> |
| |
| /** Performs arm32-specific initialization before main_bsp() is called. */ |
| void arch_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo) |
| { |
| unsigned int i; |
| |
| init.cnt = bootinfo->cnt; |
| |
| for (i = 0; i < min3(bootinfo->cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS); ++i) { |
| init.tasks[i].addr = bootinfo->tasks[i].addr; |
| init.tasks[i].size = bootinfo->tasks[i].size; |
| str_cpy(init.tasks[i].name, CONFIG_TASK_NAME_BUFLEN, |
| bootinfo->tasks[i].name); |
| } |
| } |
| |
| /** Performs arm32 specific initialization before mm is initialized. */ |
| void arch_pre_mm_init(void) |
| { |
| /* It is not assumed by default */ |
| interrupts_disable(); |
| } |
| |
| /** Performs arm32 specific initialization afterr mm is initialized. */ |
| void arch_post_mm_init(void) |
| { |
| gxemul_init(); |
| |
| /* Initialize exception dispatch table */ |
| exception_init(); |
| interrupt_init(); |
| |
| #ifdef CONFIG_FB |
| fb_properties_t prop = { |
| .addr = GXEMUL_FB_ADDRESS, |
| .offset = 0, |
| .x = 640, |
| .y = 480, |
| .scan = 1920, |
| .visual = VISUAL_BGR_8_8_8, |
| }; |
| fb_init(&prop); |
| #else |
| #ifdef CONFIG_ARM_PRN |
| dsrlnout_init((ioport8_t *) gxemul_kbd); |
| #endif /* CONFIG_ARM_PRN */ |
| #endif /* CONFIG_FB */ |
| } |
| |
| /** Performs arm32 specific tasks needed after cpu is initialized. |
| * |
| * Currently the function is empty. |
| */ |
| void arch_post_cpu_init(void) |
| { |
| } |
| |
| |
| /** Performs arm32 specific tasks needed before the multiprocessing is |
| * initialized. |
| * |
| * Currently the function is empty because SMP is not supported. |
| */ |
| void arch_pre_smp_init(void) |
| { |
| } |
| |
| |
| /** Performs arm32 specific tasks needed after the multiprocessing is |
| * initialized. |
| * |
| * Currently the function is empty because SMP is not supported. |
| */ |
| void arch_post_smp_init(void) |
| { |
| #ifdef CONFIG_ARM_KBD |
| /* |
| * Initialize the GXemul keyboard port. Then initialize the serial line |
| * module and connect it to the GXemul keyboard. |
| */ |
| dsrlnin_instance_t *dsrlnin_instance |
| = dsrlnin_init((dsrlnin_t *) gxemul_kbd, GXEMUL_KBD_IRQ); |
| if (dsrlnin_instance) { |
| srln_instance_t *srln_instance = srln_init(); |
| if (srln_instance) { |
| indev_t *sink = stdin_wire(); |
| indev_t *srln = srln_wire(srln_instance, sink); |
| dsrlnin_wire(dsrlnin_instance, srln); |
| } |
| } |
| |
| /* |
| * This is the necessary evil until the userspace driver is entirely |
| * self-sufficient. |
| */ |
| sysinfo_set_item_val("kbd", NULL, true); |
| sysinfo_set_item_val("kbd.inr", NULL, GXEMUL_KBD_IRQ); |
| sysinfo_set_item_val("kbd.address.virtual", NULL, (unative_t) gxemul_kbd); |
| #endif |
| } |
| |
| |
| /** Performs arm32 specific tasks needed before the new task is run. */ |
| void before_task_runs_arch(void) |
| { |
| tlb_invalidate_all(); |
| } |
| |
| |
| /** Performs arm32 specific tasks needed before the new thread is scheduled. |
| * |
| * It sets supervisor_sp. |
| */ |
| void before_thread_runs_arch(void) |
| { |
| uint8_t *stck; |
| |
| stck = &THREAD->kstack[THREAD_STACK_SIZE - SP_DELTA]; |
| supervisor_sp = (uintptr_t) stck; |
| } |
| |
| /** Performs arm32 specific tasks before a thread stops running. |
| * |
| * Currently the function is empty. |
| */ |
| void after_thread_ran_arch(void) |
| { |
| } |
| |
| /** Halts CPU. */ |
| void cpu_halt(void) |
| { |
| *((char *) (gxemul_kbd + GXEMUL_HALT_OFFSET)) |
| = 0; |
| } |
| |
| /** Reboot. */ |
| void arch_reboot() |
| { |
| /* not implemented */ |
| while (1); |
| } |
| |
| /** Construct function pointer |
| * |
| * @param fptr function pointer structure |
| * @param addr function address |
| * @param caller calling function address |
| * |
| * @return address of the function pointer |
| * |
| */ |
| void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller) |
| { |
| return addr; |
| } |
| |
| /** Acquire console back for kernel. */ |
| void arch_grab_console(void) |
| { |
| #ifdef CONFIG_FB |
| fb_redraw(); |
| #endif |
| } |
| |
| /** Return console to userspace. */ |
| void arch_release_console(void) |
| { |
| } |
| |
| /** @} |
| */ |