/* Print all parameters with descriptions. If force_all!=0, prints even
* parameters that specify the NO_PRINT_ALL flag.
*
* Returns 0 if success, non-zero if error. */
int PrintAllParams(int force_all) {
const Param* p;
int retval = 0;
char buf[VB_MAX_STRING_PROPERTY];
const char* value;
for (p = sys_param_list; p->name; p++) {
if (0 == force_all && (p->flags & NO_PRINT_ALL))
continue;
if (p->flags & IS_STRING) {
value = VbGetSystemPropertyString(p->name, buf, sizeof(buf));
} else {
int v = VbGetSystemPropertyInt(p->name);
if (v == -1)
value = NULL;
else {
snprintf(buf, sizeof(buf), p->format ? p->format : "%d", v);
value = buf;
}
}
printf("%-22s = %-30s # %s\n",
p->name, (value ? value : "(error)"), p->desc);
}
return retval;
}
/* Print the specified parameter.
*
* Returns 0 if success, non-zero if error. */
int PrintParam(const Param* p) {
if (p->flags & IS_STRING) {
char buf[VB_MAX_STRING_PROPERTY];
const char* v = VbGetSystemPropertyString(p->name, buf, sizeof(buf));
if (!v)
return 1;
printf("%s", v);
} else {
int v = VbGetSystemPropertyInt(p->name);
if (v == -1)
return 1;
printf(p->format ? p->format : "%d", v);
}
return 0;
}
/* Compares the parameter with the expected value.
*
* Returns 0 if success (match), non-zero if error (mismatch). */
int CheckParam(const Param* p, char* expect) {
if (p->flags & IS_STRING) {
char buf[VB_MAX_STRING_PROPERTY];
const char* v = VbGetSystemPropertyString(p->name, buf, sizeof(buf));
if (!v || 0 != strcmp(v, expect))
return 1;
} else {
char* e;
int i = (int)strtol(expect, &e, 0);
int v = VbGetSystemPropertyInt(p->name);
if (!*expect || (e && *e))
return 1;
if (v == -1 || i != v)
return 1;
}
return 0;
}
/* Determine whether OS-level debugging should be allowed.
* Returns 1 if yes, 0 if no or indeterminate. */
int VbGetCrosDebug(void) {
/* If the currently running system specifies its debug status, use
* that in preference to other indicators. */
VbBuildOption option = VbScanBuildOption();
if (VB_BUILD_OPTION_DEBUG == option) {
return 1;
} else if (VB_BUILD_OPTION_NODEBUG == option) {
return 0;
}
/* Command line is silent; allow debug if the dev switch is on. */
if (1 == VbGetSystemPropertyInt("devsw_boot"))
return 1;
/* All other cases disallow debug. */
return 0;
}
int VbGetArchPropertyInt(const char* name) {
int value = -1;
/* Values from ACPI */
if (!strcasecmp(name,"fmap_base")) {
unsigned fmap_base;
if (ReadFileInt(ACPI_FMAP_PATH, &fmap_base) < 0)
return -1;
else
value = (int)fmap_base;
}
/* Switch positions */
if (!strcasecmp(name,"devsw_cur")) {
/* Systems with virtual developer switches return at-boot value */
int flags = VbGetSystemPropertyInt("vdat_flags");
if ((flags != -1) && (flags & VBSD_HONOR_VIRT_DEV_SWITCH))
value = VbGetSystemPropertyInt("devsw_boot");
else
value = ReadGpio(GPIO_SIGNAL_TYPE_DEV);
} else if (!strcasecmp(name,"recoverysw_cur")) {
value = ReadGpio(GPIO_SIGNAL_TYPE_RECOVERY);
} else if (!strcasecmp(name,"wpsw_cur")) {
value = ReadGpio(GPIO_SIGNAL_TYPE_WP);
if (-1 != value && FwidStartsWith("Mario."))
value = 1 - value; /* Mario reports this backwards */
} else if (!strcasecmp(name,"recoverysw_ec_boot")) {
value = ReadFileBit(ACPI_CHSW_PATH, CHSW_RECOVERY_EC_BOOT);
}
/* Fields for old systems which don't have VbSharedData */
if (VbSharedDataVersion() < 2) {
if (!strcasecmp(name,"recovery_reason")) {
value = VbGetRecoveryReason();
} else if (!strcasecmp(name,"devsw_boot")) {
value = ReadFileBit(ACPI_CHSW_PATH, CHSW_DEV_BOOT);
} else if (!strcasecmp(name,"recoverysw_boot")) {
value = ReadFileBit(ACPI_CHSW_PATH, CHSW_RECOVERY_BOOT);
} else if (!strcasecmp(name,"wpsw_boot")) {
value = ReadFileBit(ACPI_CHSW_PATH, CHSW_WP_BOOT);
if (-1 != value && FwidStartsWith("Mario."))
value = 1 - value; /* Mario reports this backwards */
}
}
/* Saved memory is at a fixed location for all H2C BIOS. If the CHSW
* path exists in sysfs, it's a H2C BIOS. */
if (!strcasecmp(name,"savedmem_base")) {
unsigned savedmem_base;
if (ReadFileInt(ACPI_CHSW_PATH, &savedmem_base) < 0)
return -1;
else
return 0x00F00000;
} else if (!strcasecmp(name,"savedmem_size")) {
unsigned savedmem_size;
if (ReadFileInt(ACPI_CHSW_PATH, &savedmem_size) < 0)
return -1;
else
return 0x00100000;
}
/* NV storage values. If unable to get from NV storage, fall back to the
* CMOS reboot field used by older BIOS (e.g. Mario). */
if (!strcasecmp(name,"recovery_request")) {
value = VbGetNvStorage(VBNV_RECOVERY_REQUEST);
if (-1 == value)
value = VbGetCmosRebootField(CMOSRF_RECOVERY);
} else if (!strcasecmp(name,"dbg_reset")) {
value = VbGetNvStorage(VBNV_DEBUG_RESET_MODE);
if (-1 == value)
value = VbGetCmosRebootField(CMOSRF_DEBUG_RESET);
} else if (!strcasecmp(name,"fwb_tries")) {
value = VbGetNvStorage(VBNV_TRY_B_COUNT);
if (-1 == value)
value = VbGetCmosRebootField(CMOSRF_TRY_B);
}
/* Firmware update tries is now stored in the kernel field. On
* older systems where it's not, it was stored in a file in the
* stateful partition. */
if (!strcasecmp(name,"fwupdate_tries")) {
unsigned fwupdate_value;
if (-1 != VbGetNvStorage(VBNV_KERNEL_FIELD))
return -1; /* NvStorage supported; fail through arch-specific
* implementation to normal implementation. */
/* Read value from file; missing file means value=0. */
if (ReadFileInt(NEED_FWUPDATE_PATH, &fwupdate_value) < 0)
value = 0;
else
value = (int)fwupdate_value;
}
return value;
}
