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/* SPDX-License-Identifier: GPL-2.0-only */
#include <bootstate.h>
#include <cbfs.h>
#include <cbmem.h>
#include <console/console.h>
#include <soc/intel/common/mma.h>
#include <string.h>
#define MMA_TEST_METADATA_FILENAME "mma_test_metadata.bin"
#define MMA_TEST_NAME_TAG "MMA_TEST_NAME"
#define MMA_TEST_PARAM_TAG "MMA_TEST_PARAM"
#define TEST_NAME_MAX_SIZE 30
#define TEST_PARAM_MAX_SIZE 100
#define MMA_DATA_SIGNATURE (('M' << 0) | ('M' << 8) | \
('A' << 16) | ('D' << 24))
#define MMA_CBFS_REGION "COREBOOT"
struct mma_data_container {
uint32_t mma_signature; /* "MMAD" */
uint8_t mma_data[0]; /* Variable size, platform/run time dependent. */
} __packed;
/*
* Format of the MMA test metadata file, stored under CBFS
* MMA_TEST_NAME=xxxxxx.efi;MMA_TEST_PARAM=xxxxxx.bin;
*/
/* Returns index in haystack after 'LABEL='
* string is found, < 0 on error.
*/
static int find_label(const char *haystack, size_t haystack_sz,
const char *label)
{
size_t label_sz;
size_t i;
size_t search_sz;
label_sz = strlen(label);
if (label_sz + 1 >= haystack_sz)
return -1;
/* Handle '=' follow label. i.e. LABEL= */
search_sz = haystack_sz - label_sz - 1;
for (i = 0; i < search_sz; i++) {
if (!strncmp(&haystack[i], label, label_sz))
break;
}
if (i == search_sz)
return -1;
if (haystack[i + label_sz] != '=')
return -1;
return i + label_sz + 1;
}
/*
* Fill in value in dest field located by LABEL=.
* Returns 0 on success, < 0 on error.
*/
static int label_value(const char *haystack, size_t haystack_sz,
const char *label, char *dest, size_t dest_sz)
{
size_t val_begin;
size_t val_end;
size_t val_sz;
int val_index;
memset(dest, 0, dest_sz);
/* Allow for NULL termination. */
dest_sz--;
val_index = find_label(haystack, haystack_sz, label);
if (val_index < 0)
return -1;
val_begin = val_index;
val_end = val_begin;
val_sz = 0;
for (val_end = val_begin; val_end < haystack_sz; val_end++) {
if (haystack[val_end] == ';') {
val_sz = val_end - val_begin;
break;
}
}
if (val_end == haystack_sz)
return -1;
if (dest_sz < val_sz)
return -1;
memcpy(dest, &haystack[val_begin], val_sz);
return 0;
}
int mma_locate_param(struct mma_config_param *mma_cfg)
{
void *mma_test_metadata;
size_t mma_test_metadata_file_len;
char test_filename[TEST_NAME_MAX_SIZE],
test_param_filename[TEST_PARAM_MAX_SIZE];
struct cbfsf metadata_fh, test_content_fh, test_param_fh;
uint32_t mma_type = CBFS_TYPE_MMA;
uint32_t efi_type = CBFS_TYPE_EFI;
bool metadata_parse_flag = true;
printk(BIOS_DEBUG, "MMA: Entry %s\n", __func__);
if (cbfs_locate_file_in_region(&metadata_fh, MMA_CBFS_REGION,
MMA_TEST_METADATA_FILENAME)) {
printk(BIOS_DEBUG, "MMA: Failed to locate %s\n",
MMA_TEST_METADATA_FILENAME);
return -1;
}
mma_test_metadata = rdev_mmap_full(&metadata_fh.data);
mma_test_metadata_file_len = region_device_sz(&metadata_fh.data);
if (!mma_test_metadata || !mma_test_metadata_file_len) {
printk(BIOS_DEBUG, "MMA: Failed to read %s\n",
MMA_TEST_METADATA_FILENAME);
return -1;
}
if (label_value(mma_test_metadata, mma_test_metadata_file_len,
MMA_TEST_NAME_TAG, test_filename,
TEST_NAME_MAX_SIZE)) {
printk(BIOS_DEBUG, "MMA: Failed to get %s\n",
MMA_TEST_NAME_TAG);
metadata_parse_flag = false;
}
if (metadata_parse_flag &&
label_value(mma_test_metadata, mma_test_metadata_file_len,
MMA_TEST_PARAM_TAG, test_param_filename,
TEST_PARAM_MAX_SIZE)) {
printk(BIOS_DEBUG, "MMA: Failed to get %s\n",
MMA_TEST_PARAM_TAG);
metadata_parse_flag = false;
}
rdev_munmap(&metadata_fh.data, mma_test_metadata);
if (!metadata_parse_flag)
return -1;
printk(BIOS_DEBUG, "MMA: Got MMA_TEST_NAME=%s MMA_TEST_PARAM=%s\n",
test_filename, test_param_filename);
if (cbfs_locate_file_in_region(&test_content_fh, MMA_CBFS_REGION,
test_filename)) {
printk(BIOS_DEBUG, "MMA: Failed to locate %s\n",
test_filename);
return -1;
}
cbfs_file_data(&mma_cfg->test_content, &test_content_fh);
if (cbfs_locate_file_in_region(&test_param_fh, MMA_CBFS_REGION,
test_param_filename)) {
printk(BIOS_DEBUG, "MMA: Failed to locate %s\n",
test_param_filename);
return -1;
}
cbfs_file_data(&mma_cfg->test_param, &test_param_fh);
printk(BIOS_DEBUG, "MMA: %s exit success\n", __func__);
return 0;
}
static void save_mma_results_data(void *unused)
{
const void *mma_hob;
size_t mma_hob_size;
struct mma_data_container *mma_data;
size_t mma_data_size;
printk(BIOS_DEBUG, "MMA: Entry %s\n", __func__);
if (fsp_locate_mma_results(&mma_hob, &mma_hob_size)) {
printk(BIOS_DEBUG,
"MMA: results data Hob not present\n");
return;
}
mma_data_size = ALIGN(mma_hob_size, 16) +
sizeof(struct mma_data_container);
mma_data = cbmem_add(CBMEM_ID_MMA_DATA, mma_data_size);
if (mma_data == NULL) {
printk(BIOS_DEBUG,
"MMA: CBMEM was not available to save the MMA data.\n");
return;
}
/*clear the mma_data before coping the actual data */
memset(mma_data, 0, mma_data_size);
printk(BIOS_DEBUG,
"MMA: copy MMA data to CBMEM(src %p, dest %p, %u bytes)\n",
mma_hob, mma_data, mma_hob_size);
mma_data->mma_signature = MMA_DATA_SIGNATURE;
memcpy(mma_data->mma_data, mma_hob, mma_hob_size);
printk(BIOS_DEBUG, "MMA: %s exit successfully\n", __func__);
}
BOOT_STATE_INIT_ENTRY(BS_WRITE_TABLES, BS_ON_ENTRY,
save_mma_results_data, NULL);
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