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Diffstat (limited to 'plat/juno/scpi.h')
| -rw-r--r-- | plat/juno/scpi.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/plat/juno/scpi.h b/plat/juno/scpi.h new file mode 100644 index 0000000..4ddbeea --- /dev/null +++ b/plat/juno/scpi.h @@ -0,0 +1,74 @@ +/* + * Copyright (c) 2014, ARM Limited and Contributors. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of ARM nor the names of its contributors may be used + * to endorse or promote products derived from this software without specific + * prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __SCPI_H__ +#define __SCPI_H__ + +#include <stddef.h> +#include <stdint.h> + +extern void *scpi_secure_message_start(void); +extern void scpi_secure_message_send(unsigned command, size_t size); +extern unsigned scpi_secure_message_receive(void ** message_out, size_t *size_out); +extern void scpi_secure_message_end(void); + + +enum { + SCP_OK = 0, /* Success */ + SCP_E_PARAM, /* Invalid parameter(s) */ + SCP_E_ALIGN, /* Invalid alignment */ + SCP_E_SIZE, /* Invalid size */ + SCP_E_HANDLER, /* Invalid handler or callback */ + SCP_E_ACCESS, /* Invalid access or permission denied */ + SCP_E_RANGE, /* Value out of range */ + SCP_E_TIMEOUT, /* Time out has ocurred */ + SCP_E_NOMEM, /* Invalid memory area or pointer */ + SCP_E_PWRSTATE, /* Invalid power state */ + SCP_E_SUPPORT, /* Feature not supported or disabled */ +}; + +typedef uint32_t spci_status; + +typedef enum { + SCPI_CMD_SCP_READY = 0x01, + SCPI_CMD_SET_CSS_POWER_STATE = 0x04, +} spci_command; + +typedef enum { + scpi_power_on = 0, + scpi_power_retention = 1, + scpi_power_off = 3, +} scpi_power_state; + +extern int scpi_wait_ready(void); +extern void scpi_set_css_power_state(unsigned mpidr, scpi_power_state cpu_state, + scpi_power_state cluster_state, scpi_power_state css_state); + +#endif /* __SCPI_H__ */ |