116 lines
3.0 KiB
C
116 lines
3.0 KiB
C
/*
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* Copyright (c) 2018 The Fuchsia Authors
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <arch/arm64.h>
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#include <trace.h>
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#include <assert.h>
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#include <err.h>
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#include <bits.h>
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#include <kernel/spinlock.h>
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#include <kernel/thread.h>
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#include <kernel/mp.h>
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#include <platform/interrupts.h>
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#include <lk/init.h>
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#include <kernel/vm.h>
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#include <kernel/spinlock.h>
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#include <dev/timer/arm_generic.h>
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#include <platform.h>
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#include <dev/interrupt/arm_gic.h>
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#include <dev/timer/arm_generic.h>
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#include <platform/s912d.h>
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#include <dev/uart.h>
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typedef struct arm64_iframe_long arm_platform_iframe_t;
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/* initial memory mappings. parsed by start.S */
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struct mmu_initial_mapping mmu_initial_mappings[] = {
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{
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.phys = SDRAM_BASE,
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.virt = KERNEL_BASE,
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.size = MEMSIZE,
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.flags = 0,
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.name = "memory"
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},
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/* peripherals */
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{
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.phys = AML_S912D_PERIPH_BASE_PHYS,
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.virt = AML_S912D_PERIPH_BASE_VIRT,
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.size = AML_S912D_PERIPH_BASE_SIZE,
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.flags = MMU_INITIAL_MAPPING_FLAG_DEVICE,
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.name = "peripherals"
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},
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/* null entry to terminate the list */
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{ 0 }
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};
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static pmm_arena_t arena = {
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.name = "sdram",
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.base = SDRAM_BASE,
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.size = MEMSIZE,
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.flags = PMM_ARENA_FLAG_KMAP,
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};
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#define DEBUG_UART 0
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void platform_dputc(char c)
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{
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if (c == '\n')
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uart_putc(DEBUG_UART, '\r');
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uart_putc(DEBUG_UART, c);
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}
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int platform_dgetc(char *c, bool wait)
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{
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int ret = uart_getc(DEBUG_UART, wait);
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if (ret == -1)
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return -1;
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*c = ret;
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return 0;
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}
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void platform_init(void)
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{
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uart_init();
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}
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void platform_early_init(void)
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{
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uart_init_early();
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/* initialize the interrupt controller */
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arm_gic_init();
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arm_generic_timer_init(30, 0);
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pmm_add_arena(&arena);
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// TODO: Reserve memory regions if needed
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struct list_node list = LIST_INITIAL_VALUE(list);
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pmm_alloc_range(0x01080000, 0x01A80000 / PAGE_SIZE, &list);
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}
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