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Diffstat (limited to 'platform/bcm28xx/platform.c')
| -rw-r--r-- | platform/bcm28xx/platform.c | 237 |
1 files changed, 0 insertions, 237 deletions
diff --git a/platform/bcm28xx/platform.c b/platform/bcm28xx/platform.c deleted file mode 100644 index e2139077..00000000 --- a/platform/bcm28xx/platform.c +++ /dev/null @@ -1,237 +0,0 @@ -/* - * Copyright (c) 2015 Travis Geiselbrecht - * - * Permission is hereby granted, free of charge, to any person obtaining - * a copy of this software and associated documentation files - * (the "Software"), to deal in the Software without restriction, - * including without limitation the rights to use, copy, modify, merge, - * publish, distribute, sublicense, and/or sell copies of the Software, - * and to permit persons to whom the Software is furnished to do so, - * subject to the following conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. - * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY - * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, - * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE - * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ -#include <reg.h> -#include <err.h> -#include <debug.h> -#include <trace.h> - -#include <dev/uart.h> -#include <arch.h> -#include <lk/init.h> -#include <kernel/vm.h> -#include <kernel/spinlock.h> -#include <dev/timer/arm_generic.h> -#include <platform.h> -#include <platform/interrupts.h> -#include <platform/bcm28xx.h> - -#if BCM2836 -#include <arch/arm.h> -#include <arch/arm/mmu.h> - -/* initial memory mappings. parsed by start.S */ -struct mmu_initial_mapping mmu_initial_mappings[] = { - /* 1GB of sdram space */ - { - .phys = SDRAM_BASE, - .virt = KERNEL_BASE, - .size = MEMSIZE, - .flags = 0, - .name = "memory" - }, - - /* peripherals */ - { - .phys = BCM_PERIPH_BASE_PHYS, - .virt = BCM_PERIPH_BASE_VIRT, - .size = BCM_PERIPH_SIZE, - .flags = MMU_INITIAL_MAPPING_FLAG_DEVICE, - .name = "bcm peripherals" - }, - - /* identity map to let the boot code run */ - { - .phys = SDRAM_BASE, - .virt = SDRAM_BASE, - .size = 16*1024*1024, - .flags = MMU_INITIAL_MAPPING_TEMPORARY - }, - /* null entry to terminate the list */ - { 0 } -}; - -#define DEBUG_UART 0 - -#elif BCM2837 -#include <libfdt.h> -#include <arch/arm64.h> -#include <arch/arm64/mmu.h> -#include <platform/mailbox.h> - -/* initial memory mappings. parsed by start.S */ -struct mmu_initial_mapping mmu_initial_mappings[] = { - /* 1GB of sdram space */ - { - .phys = SDRAM_BASE, - .virt = KERNEL_BASE, - .size = MEMORY_APERTURE_SIZE, - .flags = 0, - .name = "memory" - }, - - /* peripherals */ - { - .phys = BCM_PERIPH_BASE_PHYS, - .virt = BCM_PERIPH_BASE_VIRT, - .size = BCM_PERIPH_SIZE, - .flags = MMU_INITIAL_MAPPING_FLAG_DEVICE, - .name = "bcm peripherals" - }, - - /* null entry to terminate the list */ - { 0 } -}; - -#define DEBUG_UART 1 - -#else -#error Unknown BCM28XX Variant -#endif - -extern void intc_init(void); -extern void arm_reset(void); - - -static pmm_arena_t arena = { - .name = "sdram", - .base = SDRAM_BASE, - .size = MEMSIZE, - .flags = PMM_ARENA_FLAG_KMAP, -}; - -void platform_init_mmu_mappings(void) -{ -} - -void platform_early_init(void) -{ - uart_init_early(); - - intc_init(); - -#if BCM2837 - arm_generic_timer_init(INTERRUPT_ARM_LOCAL_CNTPNSIRQ, 0); - - /* look for a flattened device tree just before the kernel */ - const void *fdt = (void *)KERNEL_BASE; - int err = fdt_check_header(fdt); - if (err >= 0) { - /* walk the nodes, looking for 'memory' */ - int depth = 0; - int offset = 0; - for (;;) { - offset = fdt_next_node(fdt, offset, &depth); - if (offset < 0) - break; - - /* get the name */ - const char *name = fdt_get_name(fdt, offset, NULL); - if (!name) - continue; - - /* look for the 'memory' property */ - if (strcmp(name, "memory") == 0) { - printf("Found memory in fdt\n"); - int lenp; - const void *prop_ptr = fdt_getprop(fdt, offset, "reg", &lenp); - if (prop_ptr && lenp == 0x10) { - /* we're looking at a memory descriptor */ - //uint64_t base = fdt64_to_cpu(*(uint64_t *)prop_ptr); - uint64_t len = fdt64_to_cpu(*((const uint64_t *)prop_ptr + 1)); - - /* trim size on certain platforms */ -#if ARCH_ARM - if (len > 1024*1024*1024U) { - len = 1024*1024*1024; /* only use the first 1GB on ARM32 */ - printf("trimming memory to 1GB\n"); - } -#endif - - /* set the size in the pmm arena */ - arena.size = len; - } - } - } - } - -#elif BCM2836 - arm_generic_timer_init(INTERRUPT_ARM_LOCAL_CNTPNSIRQ, 1000000); -#else -#error Unknown BCM28XX Variant -#endif - - /* add the main memory arena */ - pmm_add_arena(&arena); - -#if BCM2837 - /* reserve the first 64k of ram, which should be holding the fdt */ - struct list_node list = LIST_INITIAL_VALUE(list); - pmm_alloc_range(MEMBASE, 0x80000 / PAGE_SIZE, &list); -#endif - -#if WITH_SMP -#if BCM2837 - uintptr_t sec_entry = (uintptr_t)(&arm_reset - KERNEL_ASPACE_BASE); - unsigned long long *spin_table = (void *)(KERNEL_ASPACE_BASE + 0xd8); - - for (uint i = 1; i <= 3; i++) { - spin_table[i] = sec_entry; - __asm__ __volatile__ ("" : : : "memory"); - arch_clean_cache_range(0xffff000000000000,256); - __asm__ __volatile__("sev"); - } -#else - /* start the other cpus */ - uintptr_t sec_entry = (uintptr_t)&arm_reset; - sec_entry -= (KERNEL_BASE - MEMBASE); - for (uint i = 1; i <= 3; i++) { - *REG32(ARM_LOCAL_BASE + 0x8c + 0x10 * i) = sec_entry; - } -#endif -#endif -} - -void platform_init(void) -{ - uart_init(); -#if BCM2837 - init_framebuffer(); -#endif -} - -void platform_dputc(char c) -{ - if (c == '\n') - uart_putc(DEBUG_UART, '\r'); - uart_putc(DEBUG_UART, c); -} - -int platform_dgetc(char *c, bool wait) -{ - int ret = uart_getc(DEBUG_UART, wait); - if (ret == -1) - return -1; - *c = ret; - return 0; -} - |