xref: /aosp_15_r20/external/coreboot/src/soc/intel/apollolake/bootblock/fit.c (revision b9411a12aaaa7e1e6a6fb7c5e057f44ee179a49c)
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 
3 #include <stdint.h>
4 #include <soc/iomap.h>
5 
6 /*
7  * At runtime TXE creates the FIT table in the shared SRAM and patches the bootblock
8  * at the fixed address 4G - 64 byte with a pointer to this FIT table. In order to be able
9  * to pre-compute the PCR value for the bootblock this FIT pointer needs to be added to the
10  * image as well. Since the FIT location is fixed in TXE, this can be done at build time.
11  * TXE places the table right at the start of the shared SRAM.
12  */
13 __attribute__((used, __section__(".fit_pointer"))) const uint64_t fit_ptr = SHARED_SRAM_BASE;
14