/* * Original file: * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/ * All rights reserved. * * Port to Contiki: * Copyright (c) 2014 Andreas Dröscher * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * * 3. Neither the name of the copyright holder 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. */ /** * \addtogroup cc2538 * @{ * * \defgroup cc2538-pka cc2538 PKA engine * * Driver for the cc2538 PKA engine * @{ * * \file * Header file for the cc2538 PKA engine driver */ #ifndef PKA_H_ #define PKA_H_ #include "contiki.h" #include /*---------------------------------------------------------------------------*/ /** \name PKA memory * @{ */ #define PKA_RAM_BASE 0x44006000 /**< PKA Memory Address */ #define PKA_RAM_SIZE 0x800 /**< PKA Memory Size */ #define PKA_MAX_CURVE_SIZE 12 /**< Define for the maximum curve size supported by the PKA module in 32 bit word. */ #define PKA_MAX_LEN 12 /**< Define for the maximum length of the big number supported by the PKA module in 32 bit word. */ /** @} */ /*---------------------------------------------------------------------------*/ /** \name PKA register offsets * @{ */ #define PKA_APTR 0x44004000 /**< PKA vector A address During execution of basic PKCP operations, this register is double buffered and can be written with a new value for the next operation; when not written, the value remains intact. During the execution of sequencer-controlled complex operations, this register may not be written and its value is undefined at the conclusion of the operation. The driver software cannot rely on the written value to remain intact. */ #define PKA_BPTR 0x44004004 /**< PKA vector B address During execution of basic PKCP operations, this register is double buffered and can be written with a new value for the next operation; when not written, the value remains intact. During the execution of sequencer-controlled complex operations, this register may not be written and its value is undefined at the conclusion of the operation. The driver software cannot rely on the written value to remain intact. */ #define PKA_CPTR 0x44004008 /**< PKA vector C address During execution of basic PKCP operations, this register is double buffered and can be written with a new value for the next operation; when not written, the value remains intact. During the execution of sequencer-controlled complex operations, this register may not be written and its value is undefined at the conclusion of the operation. The driver software cannot rely on the written value to remain intact. */ #define PKA_DPTR 0x4400400C /**< PKA vector D address During execution of basic PKCP operations, this register is double buffered and can be written with a new value for the next operation; when not written, the value remains intact. During the execution of sequencer-controlled complex operations, this register may not be written and its value is undefined at the conclusion of the operation. The driver software cannot rely on the written value to remain intact. */ #define PKA_ALENGTH 0x44004010 /**< PKA vector A length During execution of basic PKCP operations, this register is double buffered and can be written with a new value for the next operation; when not written, the value remains intact. During the execution of sequencer-controlled complex operations, this register may not be written and its value is undefined at the conclusion of the operation. The driver software cannot rely on the written value to remain intact. */ #define PKA_BLENGTH 0x44004014 /**< PKA vector B length During execution of basic PKCP operations, this register is double buffered and can be written with a new value for the next operation; when not written, the value remains intact. During the execution of sequencer-controlled complex operations, this register may not be written and its value is undefined at the conclusion of the operation. The driver software cannot rely on the written value to remain intact. */ #define PKA_SHIFT 0x44004018 /**< PKA bit shift value For basic PKCP operations, modifying the contents of this register is made impossible while the operation is being performed. For the ExpMod-variable and ExpMod-CRT operations, this register is used to indicate the number of odd powers to use (directly as a value in the range 1-16). For the ModInv and ECC operations, this register is used to hold a completion code. */ #define PKA_FUNCTION 0x4400401C /**< PKA function This register contains the control bits to start basic PKCP as well as complex sequencer operations. The run bit can be used to poll for the completion of the operation. Modifying bits [11:0] is made impossible during the execution of a basic PKCP operation. During the execution of sequencer-controlled complex operations, this register is modified; the run and stall result bits are set to zero at the conclusion, but other bits are undefined. Attention: Continuously reading this register to poll the run bit is not allowed when executing complex sequencer operations (the sequencer cannot access the PKCP when this is done). Leave at least one sysclk cycle between poll operations. */ #define PKA_COMPARE 0x44004020 /**< PKA compare result This register provides the result of a basic PKCP compare operation. It is updated when the run bit in the PKA_FUNCTION register is reset at the end of that operation. Status after a complex sequencer operation is unknown */ #define PKA_MSW 0x44004024 /**< PKA most-significant-word of result vector This register indicates the (word) address in the PKA RAM where the most significant nonzero 32-bit word of the result is stored. Should be ignored for modulo operations. For basic PKCP operations, this register is updated when the run bit in the PKA_FUNCTION register is reset at the end of the operation. For the complex-sequencer controlled operations, updating of the final value matching the actual result is done near the end of the operation; note that the result is only meaningful if no errors were detected and that for ECC operations, the PKA_MSW register will provide information for the x-coordinate of the result point only. */ #define PKA_DIVMSW 0x44004028 /**< PKA most-significant-word of divide remainder This register indicates the (32-bit word) address in the PKA RAM where the most significant nonzero 32-bit word of the remainder result for the basic divide and modulo operations is stored. Bits [4:0] are loaded with the bit number of the most-significant nonzero bit in the most-significant nonzero word when MS one control bit is set. For divide, modulo, and MS one reporting, this register is updated when the RUN bit in the PKA_FUNCTION register is reset at the end of the operation. For the complex sequencer controlled operations, updating of bits [4:0] of this register with the most-significant bit location of the actual result is done near the end of the operation. The result is meaningful only if no errors were detected and that for ECC operations; the PKA_DIVMSW register provides information for the x-coordinate of the result point only. */ #define PKA_SEQ_CTRL 0x440040C8 /**< PKA sequencer control and status register The sequencer is interfaced with the outside world through a single control and status register. With the exception of bit [31], the actual use of bits in the separate sub-fields of this register is determined by the sequencer firmware. This register need only be accessed when the sequencer program is stored in RAM. The reset value of the RESTE bit depends upon the option chosen for sequencer program storage. */ #define PKA_OPTIONS 0x440040F4 /**< PKA hardware options register This register provides the host with a means to determine the hardware configuration implemented in this PKA engine, focused on options that have an effect on software interacting with the module. Note: (32 x (1st LNME nr. of PEs + 1st LNME FIFO RAM depth - 10)) equals the maximum modulus vector length (in bits) that can be handled by the modular exponentiation and ECC operations executed on a PKA engine that includes an LNME. */ #define PKA_SW_REV 0x440040F8 /**< PKA firmware revision and capabilities register This register allows the host access to the internal firmware revision number of the PKA Engine for software driver matching and diagnostic purposes. This register also contains a field that encodes the capabilities of the embedded firmware. The PKA_SW_REV register is written by the firmware within a few clock cycles after starting up that firmware. The hardware reset value is zero, indicating that the information has not been written yet. */ #define PKA_REVISION 0x440040FC /**< PKA hardware revision register This register allows the host access to the hardware revision number of the PKA engine for software driver matching and diagnostic purposes. It is always located at the highest address in the access space of the module and contains an encoding of the EIP number (with its complement as signature) for recognition of the hardware module. */ /** @} */ /*---------------------------------------------------------------------------*/ /** \name PKA_APTR register registers bit fields * @{ */ #define PKA_APTR_APTR_M 0x000007FF /**< This register specifies the location of vector A within the PKA RAM. Vectors are identified through the location of their least-significant 32-bit word. Note that bit [0] must be zero to ensure that the vector starts at an 8-byte boundary. */ #define PKA_APTR_APTR_S 0 /** @} */ /*---------------------------------------------------------------------------*/ /** \name PKA_BPTR register registers bit fields * @{ */ #define PKA_BPTR_BPTR_M 0x000007FF /**< This register specifies the location of vector B within the PKA RAM. Vectors are identified through the location of their least-significant 32-bit word. Note that bit [0] must be zero to ensure that the vector starts at an 8-byte boundary. */ #define PKA_BPTR_BPTR_S 0 /** @} */ /*---------------------------------------------------------------------------*/ /** \name PKA_CPTR register registers bit fields * @{ */ #define PKA_CPTR_CPTR_M 0x000007FF /**< This register specifies the location of vector C within the PKA RAM. Vectors are identified through the location of their least-significant 32-bit word. Note that bit [0] must be zero to ensure that the vector starts at an 8-byte boundary. */ #define PKA_CPTR_CPTR_S 0 /** @} */ /*---------------------------------------------------------------------------*/ /** \name PKA_DPTR register registers bit fields * @{ */ #define PKA_DPTR_DPTR_M 0x000007FF /**< This register specifies the location of vector D within the PKA RAM. Vectors are identified through the location of their least-significant 32-bit word. Note that bit [0] must be zero to ensure that the vector starts at an 8-byte boundary. */ #define PKA_DPTR_DPTR_S 0 /** @} */ /*---------------------------------------------------------------------------*/ /** \name PKA_ALENGTH register registers bit fields * @{ */ #define PKA_ALENGTH_ALENGTH_M 0x000001FF /**< This register specifies the length (in 32-bit words) of Vector A. */ #define PKA_ALENGTH_ALENGTH_S 0 /** @} */ /*---------------------------------------------------------------------------*/ /** \name PKA_BLENGTH register registers bit fields * @{ */ #define PKA_BLENGTH_BLENGTH_M 0x000001FF /**< This register specifies the length (in 32-bit words) of Vector B. */ #define PKA_BLENGTH_BLENGTH_S 0 /** @} */ /*---------------------------------------------------------------------------*/ /** \name PKA_SHIFT register registers bit fields * @{ */ #define PKA_SHIFT_NUM_BITS_TO_SHIFT_M \ 0x0000001F /**< This register specifies the number of bits to shift the input vector (in the range 0-31) during a Rshift or Lshift operation. */ #define PKA_SHIFT_NUM_BITS_TO_SHIFT_S 0 /** @} */ /*---------------------------------------------------------------------------*/ /** \name PKA_FUNCTION register registers bit fields * @{ */ #define PKA_FUNCTION_STALL_RESULT \ 0x01000000 /**< When written with a 1b, updating of the PKA_COMPARE, PKA_MSW and PKA_DIVMSW registers, as well as resetting the run bit is stalled beyond the point that a running operation is actually finished. Use this to allow software enough time to read results from a previous operation when the newly started operation is known to take only a short amount of time. If a result is waiting, the result registers is updated and the run bit is reset in the clock cycle following writing the stall result bit back to 0b. The Stall result function may only be used for basic PKCP operations. */ #define PKA_FUNCTION_STALL_RESULT_M \ 0x01000000 #define PKA_FUNCTION_STALL_RESULT_S 24 #define PKA_FUNCTION_RUN 0x00008000 /**< The host sets this bit to instruct the PKA module to begin processing the basic PKCP or complex sequencer operation. This bit is reset low automatically when the operation is complete. The complement of this bit is output as interrupts[1]. After a reset, the run bit is always set to 1b. Depending on the option, program ROM or program RAM, the following applies: Program ROM - The first sequencer instruction sets the bit to 0b. This is done immediately after the hardware reset is released. Program RAM - The sequencer must set the bit to 0b. As a valid firmware may not have been loaded, the sequencer is held in software reset after the hardware reset is released (the reset bit in PKA_SEQ_CRTL is set to 1b). After the FW image is loaded and the Reset bit is cleared, the sequencer starts to execute the FW. The first instruction clears the run bit. In both cases a few clock cycles are needed before the first instruction is executed and the run bit state has been propagated. */ #define PKA_FUNCTION_RUN_M 0x00008000 #define PKA_FUNCTION_RUN_S 15 #define PKA_FUNCTION_SEQUENCER_OPERATIONS_M \ 0x00007000 /**< These bits select the complex sequencer operation to perform: 000b: None 001b: ExpMod-CRT 010b: ExpMod-ACT4 (compatible with EIP2315) 011b: ECC-ADD (if available in firmware, otherwise reserved) 100b: ExpMod-ACT2 (compatible with EIP2316) 101b: ECC-MUL (if available in firmware, otherwise reserved) 110b: ExpMod-variable 111b: ModInv (if available in firmware, otherwise reserved) The encoding of these operations is determined by sequencer firmware. */ #define PKA_FUNCTION_SEQUENCER_OPERATIONS_S 12 #define PKA_FUNCTION_COPY 0x00000800 /**< Perform copy operation */ #define PKA_FUNCTION_COPY_M 0x00000800 #define PKA_FUNCTION_COPY_S 11 #define PKA_FUNCTION_COMPARE 0x00000400 /**< Perform compare operation */ #define PKA_FUNCTION_COMPARE_M 0x00000400 #define PKA_FUNCTION_COMPARE_S 10 #define PKA_FUNCTION_MODULO 0x00000200 /**< Perform modulo operation */ #define PKA_FUNCTION_MODULO_M 0x00000200 #define PKA_FUNCTION_MODULO_S 9 #define PKA_FUNCTION_DIVIDE 0x00000100 /**< Perform divide operation */ #define PKA_FUNCTION_DIVIDE_M 0x00000100 #define PKA_FUNCTION_DIVIDE_S 8 #define PKA_FUNCTION_LSHIFT 0x00000080 /**< Perform left shift operation */ #define PKA_FUNCTION_LSHIFT_M 0x00000080 #define PKA_FUNCTION_LSHIFT_S 7 #define PKA_FUNCTION_RSHIFT 0x00000040 /**< Perform right shift operation */ #define PKA_FUNCTION_RSHIFT_M 0x00000040 #define PKA_FUNCTION_RSHIFT_S 6 #define PKA_FUNCTION_SUBTRACT 0x00000020 /**< Perform subtract operation */ #define PKA_FUNCTION_SUBTRACT_M 0x00000020 #define PKA_FUNCTION_SUBTRACT_S 5 #define PKA_FUNCTION_ADD 0x00000010 /**< Perform add operation */ #define PKA_FUNCTION_ADD_M 0x00000010 #define PKA_FUNCTION_ADD_S 4 #define PKA_FUNCTION_MS_ONE 0x00000008 /**< Loads the location of the Most Significant one bit within the result word indicated in the PKA_MSW register into bits [4:0] of the PKA_DIVMSW register - can only be used with basic PKCP operations, except for Divide, Modulo and Compare. */ #define PKA_FUNCTION_MS_ONE_M 0x00000008 #define PKA_FUNCTION_MS_ONE_S 3 #define PKA_FUNCTION_ADDSUB 0x00000002 /**< Perform combined add/subtract operation */ #define PKA_FUNCTION_ADDSUB_M 0x00000002 #define PKA_FUNCTION_ADDSUB_S 1 #define PKA_FUNCTION_MULTIPLY 0x00000001 /**< Perform multiply operation */ #define PKA_FUNCTION_MULTIPLY_M 0x00000001 #define PKA_FUNCTION_MULTIPLY_S 0 /** @} */ /*---------------------------------------------------------------------------*/ /** \name PKA_COMPARE register registers bit fields * @{ */ #define PKA_COMPARE_A_GREATER_THAN_B \ 0x00000004 /**< Vector_A is greater than Vector_B */ #define PKA_COMPARE_A_GREATER_THAN_B_M \ 0x00000004 #define PKA_COMPARE_A_GREATER_THAN_B_S 2 #define PKA_COMPARE_A_LESS_THAN_B \ 0x00000002 /**< Vector_A is less than Vector_B */ #define PKA_COMPARE_A_LESS_THAN_B_M \ 0x00000002 #define PKA_COMPARE_A_LESS_THAN_B_S 1 #define PKA_COMPARE_A_EQUALS_B 0x00000001 /**< Vector_A is equal to Vector_B */ #define PKA_COMPARE_A_EQUALS_B_M \ 0x00000001 #define PKA_COMPARE_A_EQUALS_B_S 0 /** @} */ /*---------------------------------------------------------------------------*/ /** \name PKA_MSW register registers bit fields * @{ */ #define PKA_MSW_RESULT_IS_ZERO 0x00008000 /**< The result vector is all zeroes, ignore the address returned in bits [10:0] */ #define PKA_MSW_RESULT_IS_ZERO_M \ 0x00008000 #define PKA_MSW_RESULT_IS_ZERO_S 15 #define PKA_MSW_MSW_ADDRESS_M 0x000007FF /**< Address of the most-significant nonzero 32-bit word of the result vector in PKA RAM */ #define PKA_MSW_MSW_ADDRESS_S 0 /** @} */ /*---------------------------------------------------------------------------*/ /** \name PKA_DIVMSW register registers bit fields * @{ */ #define PKA_DIVMSW_RESULT_IS_ZERO \ 0x00008000 /**< The result vector is all zeroes, ignore the address returned in bits [10:0] */ #define PKA_DIVMSW_RESULT_IS_ZERO_M \ 0x00008000 #define PKA_DIVMSW_RESULT_IS_ZERO_S 15 #define PKA_DIVMSW_MSW_ADDRESS_M \ 0x000007FF /**< Address of the most significant nonzero 32-bit word of the remainder result vector in PKA RAM */ #define PKA_DIVMSW_MSW_ADDRESS_S 0 /** @} */ /*---------------------------------------------------------------------------*/ /** \name PKA_SEQ_CTRL register registers bit fields * @{ */ #define PKA_SEQ_CTRL_RESET 0x80000000 /**< Option program ROM: Reset value = 0. Read/Write, reset value 0b (ZERO). Writing 1b resets the sequencer, write to 0b to restart operations again. As the reset value is 0b, the sequencer will automatically start operations executing from program ROM. This bit should always be written with zero and ignored when reading this register. Option Program RAM: Reset value =1. Read/Write, reset value 1b (ONE). When 1b, the sequencer is held in a reset state and the PKA_PROGRAM area is accessible for loading the sequencer program (while the PKA_DATA_RAM is inaccessible), write to 0b to (re)start sequencer operations and disable PKA_PROGRAM area accessibility (also enables the PKA_DATA_RAM accesses). Resetting the sequencer (in order to load other firmware) should only be done when the PKA Engine is not performing any operations (i.e. the run bit in the PKA_FUNCTION register should be zero). */ #define PKA_SEQ_CTRL_RESET_M 0x80000000 #define PKA_SEQ_CTRL_RESET_S 31 #define PKA_SEQ_CTRL_SEQUENCER_STATUS_M \ 0x0000FF00 /**< These read-only bits can be used by the sequencer to communicate status to the outside world. Bit [8] is also used as sequencer interrupt, with the complement of this bit ORed into the run bit in PKA_FUNCTION. This field should always be written with zeroes and ignored when reading this register. */ #define PKA_SEQ_CTRL_SEQUENCER_STATUS_S 8 #define PKA_SEQ_CTRL_SW_CONTROL_STATUS_M \ 0x000000FF /**< These bits can be used by software to trigger sequencer operations. External logic can set these bits by writing 1b, cannot reset them by writing 0b. The sequencer can reset these bits by writing 0b, cannot set them by writing 1b. Setting the run bit in PKA_FUNCTION together with a nonzero sequencer operations field automatically sets bit [0] here. This field should always be written with zeroes and ignored when reading this register. */ #define PKA_SEQ_CTRL_SW_CONTROL_STATUS_S 0 /** @} */ /*---------------------------------------------------------------------------*/ /** \name PKA_OPTIONS register registers bit fields * @{ */ #define PKA_OPTIONS_FIRST_LNME_FIFO_DEPTH_M \ 0xFF000000 /**< Number of words in the first LNME's FIFO RAM Should be ignored if LNME configuration is 0. The contents of this field indicate the actual depth as selected by the LNME FIFO RAM size strap input, fifo_size_sel. Note: Reset value is undefined */ #define PKA_OPTIONS_FIRST_LNME_FIFO_DEPTH_S 24 #define PKA_OPTIONS_FIRST_LNME_NR_OF_PES_M \ 0x003F0000 /**< Number of processing elements in the pipeline of the first LNME Should be ignored if LNME configuration is 0. Note: Reset value is undefined. */ #define PKA_OPTIONS_FIRST_LNME_NR_OF_PES_S 16 #define PKA_OPTIONS_MMM3A 0x00001000 /**< Reserved for a future functional extension to the LNME Always 0b */ #define PKA_OPTIONS_MMM3A_M 0x00001000 #define PKA_OPTIONS_MMM3A_S 12 #define PKA_OPTIONS_INT_MASKING 0x00000800 /**< Value 0b indicates that the main interrupt output (bit [1] of the interrupts output bus) is the direct complement of the run bit in the PKA_CONTROL register, value 1b indicates that interrupt masking logic is present for this output. Note: Reset value is undefined */ #define PKA_OPTIONS_INT_MASKING_M \ 0x00000800 #define PKA_OPTIONS_INT_MASKING_S 11 #define PKA_OPTIONS_PROTECTION_OPTION_M \ 0x00000700 /**< Value 0 indicates no additional protection against side channel attacks, value 1 indicates the SCAP option, value 3 indicates the PROT option; other values are reserved. Note: Reset value is undefined */ #define PKA_OPTIONS_PROTECTION_OPTION_S 8 #define PKA_OPTIONS_PROGRAM_RAM 0x00000080 /**< Value 1b indicates sequencer program storage in RAM, value 0b in ROM. Note: Reset value is undefined */ #define PKA_OPTIONS_PROGRAM_RAM_M \ 0x00000080 #define PKA_OPTIONS_PROGRAM_RAM_S 7 #define PKA_OPTIONS_SEQUENCER_CONFIGURATION_M \ 0x00000060 /**< Value 1 indicates a standard sequencer; other values are reserved. */ #define PKA_OPTIONS_SEQUENCER_CONFIGURATION_S 5 #define PKA_OPTIONS_LNME_CONFIGURATION_M \ 0x0000001C /**< Value 0 indicates NO LNME, value 1 indicates one standard LNME (with alpha = 32, beta = 8); other values reserved. Note: Reset value is undefined */ #define PKA_OPTIONS_LNME_CONFIGURATION_S 2 #define PKA_OPTIONS_PKCP_CONFIGURATION_M \ 0x00000003 /**< Value 1 indicates a PKCP with a 16x16 multiplier, value 2 indicates a PKCP with a 32x32 multiplier, other values reserved. Note: Reset value is undefined. */ #define PKA_OPTIONS_PKCP_CONFIGURATION_S 0 /** @} */ /*---------------------------------------------------------------------------*/ /** \name PKA_SW_REV register registers bit fields * @{ */ #define PKA_SW_REV_FW_CAPABILITIES_M \ 0xF0000000 /**< 4-bit binary encoding for the functionality implemented in the firmware. Value 0 indicates basic ModExp with/without CRT. Value 1 adds Modular Inversion, value 2 adds Modular Inversion and ECC operations. Values 3-15 are reserved. */ #define PKA_SW_REV_FW_CAPABILITIES_S 28 #define PKA_SW_REV_MAJOR_FW_REVISION_M \ 0x0F000000 /**< 4-bit binary encoding of the major firmware revision number */ #define PKA_SW_REV_MAJOR_FW_REVISION_S 24 #define PKA_SW_REV_MINOR_FW_REVISION_M \ 0x00F00000 /**< 4-bit binary encoding of the minor firmware revision number */ #define PKA_SW_REV_MINOR_FW_REVISION_S 20 #define PKA_SW_REV_FW_PATCH_LEVEL_M \ 0x000F0000 /**< 4-bit binary encoding of the firmware patch level, initial release will carry value zero Patches are used to remove bugs without changing the functionality or interface of a module. */ #define PKA_SW_REV_FW_PATCH_LEVEL_S 16 /** @} */ /*---------------------------------------------------------------------------*/ /** \name PKA_REVISION register registers bit fields * @{ */ #define PKA_REVISION_MAJOR_HW_REVISION_M \ 0x0F000000 /**< 4-bit binary encoding of the major hardware revision number */ #define PKA_REVISION_MAJOR_HW_REVISION_S 24 #define PKA_REVISION_MINOR_HW_REVISION_M \ 0x00F00000 /**< 4-bit binary encoding of the minor hardware revision number */ #define PKA_REVISION_MINOR_HW_REVISION_S 20 #define PKA_REVISION_HW_PATCH_LEVEL_M \ 0x000F0000 /**< 4-bit binary encoding of the hardware patch level, initial release will carry value zero Patches are used to remove bugs without changing the functionality or interface of a module. */ #define PKA_REVISION_HW_PATCH_LEVEL_S 16 #define PKA_REVISION_COMPLEMENT_OF_BASIC_EIP_NUMBER_M \ 0x0000FF00 /**< Bit-by-bit logic complement of bits [7:0], EIP-28 gives 0xE3 */ #define PKA_REVISION_COMPLEMENT_OF_BASIC_EIP_NUMBER_S 8 #define PKA_REVISION_BASIC_EIP_NUMBER_M \ 0x000000FF /**< 8-bit binary encoding of the EIP number, EIP-28 gives 0x1C */ #define PKA_REVISION_BASIC_EIP_NUMBER_S 0 /** @} */ /*---------------------------------------------------------------------------*/ /** \name PKA driver return codes * @{ */ #define PKA_STATUS_SUCCESS 0 /**< Success */ #define PKA_STATUS_FAILURE 1 /**< Failure */ #define PKA_STATUS_INVALID_PARAM 2 /**< Invalid parameter */ #define PKA_STATUS_BUF_UNDERFLOW 3 /**< Buffer underflow */ #define PKA_STATUS_RESULT_0 4 /**< Result is all zeros */ #define PKA_STATUS_A_GR_B 5 /**< Big number compare return status if the first big num is greater than the second. */ #define PKA_STATUS_A_LT_B 6 /**< Big number compare return status if the first big num is less than the second. */ #define PKA_STATUS_OPERATION_INPRG 7 /**< PKA operation is in progress. */ #define PKA_STATUS_OPERATION_NOT_INPRG 8 /**< No PKA operation is in progress. */ #define PKA_STATUS_SIGNATURE_INVALID 9 /**< Signature is invalid. */ /** @} */ /*---------------------------------------------------------------------------*/ /** \name PKA functions * @{ */ /** \brief Enables and resets the PKA engine */ void pka_init(void); /** \brief Enables the PKA engine */ void pka_enable(void); /** \brief Disables the PKA engine * \note Call this function to save power when the engine is unused. */ void pka_disable(void); /** \brief Checks the status of the PKA engine operation * \retval false Result not yet available, and no error occurred * \retval true Result available, or error occurred */ uint8_t pka_check_status(void); /** \brief Registers a process to be notified of the completion of a PKA * operation * \param p Process to be polled upon IRQ * \note This function is only supposed to be called by the PKA drivers. */ void pka_register_process_notification(struct process *p); /** @} */ #endif /* PKA_H_ */ /** * @} * @} */