| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <boot_device.h> |
| #include <endian.h> |
| #include <spi_flash.h> |
| |
| #if CONFIG_ROM_SIZE >= (16 * MiB) |
| #define ROM_SIZE (16 * MiB) |
| #else |
| #define ROM_SIZE CONFIG_ROM_SIZE |
| #endif |
| |
| /* The ROM is memory mapped just below 4GiB. Form a pointer for the base. */ |
| #define rom_base ((void *)(uintptr_t)(0x100000000ULL-ROM_SIZE)) |
| |
| static const struct mem_region_device boot_dev = |
| MEM_REGION_DEV_RO_INIT(rom_base, ROM_SIZE); |
| |
| const struct region_device *boot_device_ro(void) |
| { |
| return &boot_dev.rdev; |
| } |
| |
| uint32_t spi_flash_get_mmap_windows(struct flash_mmap_window *table) |
| { |
| table->flash_base = 0; |
| table->host_base = (uint32_t)(uintptr_t)rom_base; |
| table->size = ROM_SIZE; |
| |
| return 1; |
| } |