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// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
/*
* Parse VERSION partition, add to device tree
*
* Copyright 2013-2018 IBM Corp.
*/
#include <skiboot.h>
#include <device.h>
#include <opal.h>
#include <libstb/secureboot.h>
#include <libstb/trustedboot.h>
/* ibm,firmware-versions support */
static char *version_buf;
static size_t version_buf_size = 0x2000;
static void __flash_dt_add_fw_version(struct dt_node *fw_version, char* data)
{
static bool first = true;
char *prop;
int version_len, i;
int len = strlen(data);
const char *skiboot_version;
const char * version_str[] = {"open-power", "buildroot", "skiboot",
"hostboot-binaries", "hostboot", "linux",
"petitboot", "occ", "capp-ucode", "sbe",
"machine-xml", "hcode"};
if (first) {
first = false;
/* Increment past "key-" */
if (memcmp(data, "open-power", strlen("open-power")) == 0)
prop = data + strlen("open-power");
else
prop = strchr(data, '-');
if (!prop) {
prlog(PR_DEBUG,
"FLASH: Invalid fw version format (%s)\n", data);
return;
}
prop++;
dt_add_property_string(fw_version, "version", prop);
return;
}
/*
* PNOR version strings are not easily consumable. Split them into
* property, value.
*
* Example input from PNOR :
* "open-power-firestone-v1.8"
* "linux-4.4.6-openpower1-8420e0f"
*
* Desired output in device tree:
* open-power = "firestone-v1.8";
* linux = "4.4.6-openpower1-8420e0f";
*/
for(i = 0; i < ARRAY_SIZE(version_str); i++)
{
version_len = strlen(version_str[i]);
if (len < version_len)
continue;
if (memcmp(data, version_str[i], version_len) != 0)
continue;
/* Found a match, add property */
if (dt_find_property(fw_version, version_str[i]))
continue;
/* Increment past "key-" */
prop = data + version_len + 1;
dt_add_property_string(fw_version, version_str[i], prop);
/* Sanity check against what Skiboot thinks its version is. */
if (strncmp(version_str[i], "skiboot",
strlen("skiboot")) == 0) {
/*
* If Skiboot was built with Buildroot its version may
* include a 'skiboot-' prefix; ignore it.
*/
if (strncmp(version, "skiboot-",
strlen("skiboot-")) == 0)
skiboot_version = version + strlen("skiboot-");
else
skiboot_version = version;
if (strncmp(prop, skiboot_version,
strlen(skiboot_version)) != 0)
prlog(PR_WARNING, "WARNING! Skiboot version does not match VERSION partition!\n");
}
}
}
void flash_dt_add_fw_version(void)
{
uint8_t version_data[80];
int rc;
int numbytes = 0, i = 0;
struct dt_node *fw_version;
if (version_buf == NULL)
return;
rc = wait_for_resource_loaded(RESOURCE_ID_VERSION, RESOURCE_SUBID_NONE);
if (rc != OPAL_SUCCESS) {
prlog(PR_WARNING, "FLASH: Failed to load VERSION data\n");
free(version_buf);
return;
}
fw_version = dt_new(dt_root, "ibm,firmware-versions");
assert(fw_version);
if (stb_is_container(version_buf, version_buf_size))
numbytes += SECURE_BOOT_HEADERS_SIZE;
for ( ; (numbytes < version_buf_size) && version_buf[numbytes]; numbytes++) {
if (version_buf[numbytes] == '\n') {
version_data[i] = '\0';
__flash_dt_add_fw_version(fw_version, version_data);
memset(version_data, 0, sizeof(version_data));
i = 0;
continue;
} else if (version_buf[numbytes] == '\t') {
continue; /* skip tabs */
}
version_data[i++] = version_buf[numbytes];
if (i == sizeof(version_data)) {
prlog(PR_WARNING, "VERSION item >%lu chars, skipping\n",
sizeof(version_data));
break;
}
}
free(version_buf);
}
void flash_fw_version_preload(void)
{
int rc;
if (proc_gen < proc_gen_p9)
return;
prlog(PR_INFO, "FLASH: Loading VERSION section\n");
version_buf = malloc(version_buf_size);
if (!version_buf) {
prlog(PR_WARNING, "FLASH: Failed to allocate memory\n");
return;
}
rc = start_preload_resource(RESOURCE_ID_VERSION, RESOURCE_SUBID_NONE,
version_buf, &version_buf_size);
if (rc != OPAL_SUCCESS) {
prlog(PR_WARNING,
"FLASH: Failed to start loading VERSION data\n");
free(version_buf);
version_buf = NULL;
}
}
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