mmap_boot.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <boot_device.h>
#include <endian.h>
#include <spi_flash.h>
 
/* The ROM is memory mapped just below 4GiB. Form a pointer for the base. */
#define rom_base ((void *)(uintptr_t)(0x100000000ULL-CONFIG_ROM_SIZE))
 
static const struct mem_region_device boot_dev =
        MEM_REGION_DEV_RO_INIT(rom_base, CONFIG_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 = CONFIG_ROM_SIZE;
 
        return 1;
}