cbmem.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <cbmem.h>
#include <soc/soc_services.h>
 
static int cbmem_backing_store_ready;
 
void ipq_cbmem_backing_store_ready(void)
{
        cbmem_backing_store_ready = 1;
}
 
void *cbmem_top_chipset(void)
{
        /*
         * In romstage, make sure that cbmem backing store is ready before
         * returning the pointer to cbmem top. Otherwise, it could lead to
         * issues with components that utilize cbmem in romstage
         * (e.g. vboot_locator for loading ipq blobs before DRAM is
         * initialized).
         */
        if (cbmem_backing_store_ready == 0)
                return NULL;
 
        return _memlayout_cbmem_top;
}