3f9613bf6d
`stddef.h` should only provide the definitions defined by ISO or Posix. The included `commonlib/bsd/helpers.h` provide a lot of non standard definitions that may interfere with definitions from the application. Change-Id: Ia71edbc3ffe6694ff4b971decf3a41f915264bc8 Signed-off-by: Thomas Heijligen <src@posteo.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/70116 Reviewed-by: Elyes Haouas <ehaouas@noos.fr> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
14 lines
471 B
C
14 lines
471 B
C
/* SPDX-License-Identifier: BSD-3-Clause */
|
|
|
|
#include <libpayload.h>
|
|
#include <boot_device.h>
|
|
|
|
__attribute__((weak)) ssize_t boot_device_read(void *buf, size_t offset, size_t size)
|
|
{
|
|
/* Memory-mapping usually only works for the top 16MB. */
|
|
if (!lib_sysinfo.boot_media_size || lib_sysinfo.boot_media_size - offset > 16 * MiB)
|
|
return CB_ERR_ARG;
|
|
const void *const ptr = phys_to_virt(0 - lib_sysinfo.boot_media_size + offset);
|
|
memcpy(buf, ptr, size);
|
|
return size;
|
|
}
|