fsp_validate.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <console/console.h>
#include <fsp/util.h>
#include <types.h>
 
struct amd_image_revision {
        uint8_t build;
        uint8_t revision;
        uint8_t minor;
        uint8_t major;
} __packed;
 
/* Validate the FSP-M header in romstage */
void soc_validate_fspm_header(const struct fsp_header *hdr)
{
        struct amd_image_revision *rev;
 
        rev = (struct amd_image_revision *) &(hdr->image_revision);
 
        /* Check if the image fits into the reserved memory region */
        if (hdr->image_size > CONFIG_FSP_M_SIZE)
                die("The FSP-M binary is %u bytes larger than the memory region"
                " allocated for it. Increase FSP_M_SIZE to make it fit.\n",
                        hdr->image_size - CONFIG_FSP_M_SIZE);
 
        /* a coding bug on the AMD FSP side makes this value 1 in
        older versions of the FSP.*/
        if (hdr->image_revision == 1) {
                printk(BIOS_WARNING, "No AMD FSP image revision information available\n");
                return;
        }
 
        printk(BIOS_INFO, "FSP major    = %d\n", rev->major);
        printk(BIOS_INFO, "FSP minor    = %d\n", rev->minor);
        printk(BIOS_INFO, "FSP revision = %d\n", rev->revision);
        printk(BIOS_INFO, "FSP build    = %d\n", rev->build);
 
        if ((rev->major != IMAGE_REVISION_MAJOR_VERSION) ||
        (rev->minor != IMAGE_REVISION_MINOR_VERSION)) {
                printk(BIOS_WARNING, "FSP binary and SOC FSP header file don't match.\n");
                printk(BIOS_WARNING, "include file ImageRevisionMajorVersion=%d\n",
                        IMAGE_REVISION_MAJOR_VERSION);
                printk(BIOS_WARNING, "include file ImageRevisionMinorVersion=%d\n",
                        IMAGE_REVISION_MINOR_VERSION);
                printk(BIOS_WARNING, "Please update FspmUpd.h based on the corresponding FSP"
                        " build's FspmUpd.h\n");
        }
 
        if (rev->major != IMAGE_REVISION_MAJOR_VERSION)
                die("IMAGE_REVISION_MAJOR_VERSION mismatch, halting\nGoodbye now\n");
}