The legacy ATAGS format for passing information to the kernel only
allows RAM sizes which fit in 32 bits; enforce this restriction
rather than silently doing something weird.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>
bootloader[5] = dtb_start;
} else {
bootloader[5] = info->loader_start + KERNEL_ARGS_ADDR;
+ if (info->ram_size >= (1ULL << 32)) {
+ fprintf(stderr, "qemu: RAM size must be less than 4GB to boot"
+ " Linux kernel using ATAGS (try passing a device tree"
+ " using -dtb)\n");
+ exit(1);
+ }
}
bootloader[6] = entry;
for (n = 0; n < sizeof(bootloader) / 4; n++) {