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https://github.com/espressif/esp-idf.git
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cpu retention: software cpu retention support for esp32c6
cpu retention: add riscv core sleep critical and non-critical register layout structure definition cpu retention: add assembly subroutine for cpu critical register backup and restore cpu retention: add cpu core critical register context backup and restore support cpu retention: add cpu core non-critical register context backup and restore support cpu retention: add interrupt priority register context backup and restore support cpu retention: add cache config register context backup and restore support cpu retention: add plic interrupt register context backup and restore support cpu retention: add clint interrupt register context backup and restore support cpu retention: wait icache state idle before pmu enter sleep
This commit is contained in:
Li Shuai
wuzhenghui
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/*
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* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef __RVSLEEP_FRAMES_H__
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#define __RVSLEEP_FRAMES_H__
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/* Align a value up to nearest n-byte boundary, where n is a power of 2. */
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#define ALIGNUP(n, val) (((val) + (n) - 1) & -(n))
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#ifdef STRUCT_BEGIN
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#undef STRUCT_BEGIN
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#undef STRUCT_FIELD
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#undef STRUCT_AFIELD
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#undef STRUCT_END
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#endif
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#if defined(_ASMLANGUAGE) || defined(__ASSEMBLER__)
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#ifdef __clang__
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#define STRUCT_BEGIN .set RV_STRUCT_OFFSET, 0
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#define STRUCT_FIELD(ctype,size,asname,name) .set asname, RV_STRUCT_OFFSET; .set RV_STRUCT_OFFSET, asname + size
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#define STRUCT_AFIELD(ctype,size,asname,name,n) .set asname, RV_STRUCT_OFFSET;\
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.set RV_STRUCT_OFFSET, asname + (size)*(n);
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#define STRUCT_END(sname) .set sname##Size, RV_STRUCT_OFFSET;
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#else // __clang__
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#define STRUCT_BEGIN .pushsection .text; .struct 0
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#define STRUCT_FIELD(ctype,size,asname,name) asname: .space size
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#define STRUCT_AFIELD(ctype,size,asname,name,n) asname: .space (size)*(n)
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#define STRUCT_END(sname) sname##Size:; .popsection
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#endif // __clang__
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#else
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#define STRUCT_BEGIN typedef struct {
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#define STRUCT_FIELD(ctype,size,asname,name) ctype name;
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#define STRUCT_AFIELD(ctype,size,asname,name,n) ctype name[n];
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#define STRUCT_END(sname) } sname;
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#endif
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/*
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* -------------------------------------------------------------------------------
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* RISC-V CORE CRITICAL REGISTER CONTEXT LAYOUT FOR SLEEP
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* -------------------------------------------------------------------------------
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*/
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STRUCT_BEGIN
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STRUCT_FIELD (long, 4, RV_SLP_CTX_MEPC, mepc) /* Machine Exception Program Counter */
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STRUCT_FIELD (long, 4, RV_SLP_CTX_RA, ra) /* Return address */
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STRUCT_FIELD (long, 4, RV_SLP_CTX_SP, sp) /* Stack pointer */
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STRUCT_FIELD (long, 4, RV_SLP_CTX_GP, gp) /* Global pointer */
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STRUCT_FIELD (long, 4, RV_SLP_CTX_TP, tp) /* Thread pointer */
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STRUCT_FIELD (long, 4, RV_SLP_CTX_T0, t0) /* Temporary/alternate link register */
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STRUCT_FIELD (long, 4, RV_SLP_CTX_T1, t1) /* t1-2: Temporaries */
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STRUCT_FIELD (long, 4, RV_SLP_CTX_T2, t2)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_S0, s0) /* Saved register/frame pointer */
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STRUCT_FIELD (long, 4, RV_SLP_CTX_S1, s1) /* Saved register */
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STRUCT_FIELD (long, 4, RV_SLP_CTX_A0, a0) /* a0-1: Function arguments/return address */
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STRUCT_FIELD (long, 4, RV_SLP_CTX_A1, a1)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_A2, a2) /* a2-7: Function arguments */
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STRUCT_FIELD (long, 4, RV_SLP_CTX_A3, a3)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_A4, a4)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_A5, a5)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_A6, a6)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_A7, a7)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_S2, s2) /* s2-11: Saved registers */
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STRUCT_FIELD (long, 4, RV_SLP_CTX_S3, s3)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_S4, s4)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_S5, s5)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_S6, s6)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_S7, s7)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_S8, s8)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_S9, s9)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_S10, s10)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_S11, s11)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_T3, t3) /* t3-6: Temporaries */
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STRUCT_FIELD (long, 4, RV_SLP_CTX_T4, t4)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_T5, t5)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_T6, t6)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_MSTATUS, mstatus) /* Machine Status */
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STRUCT_FIELD (long, 4, RV_SLP_CTX_MTVEC, mtvec) /* Machine Trap-Vector Base Address */
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STRUCT_FIELD (long, 4, RV_SLP_CTX_MCAUSE, mcause) /* Machine Trap Cause */
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STRUCT_FIELD (long, 4, RV_SLP_CTX_MTVAL, mtval) /* Machine Trap Value */
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STRUCT_FIELD (long, 4, RV_SLP_CTX_MIE, mie) /* Machine intr enable */
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STRUCT_FIELD (long, 4, RV_SLP_CTX_MIP, mip) /* Machine intr pending */
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STRUCT_FIELD (long, 4, RV_SLP_CTX_PMUFUNC, pmufunc) /* A field is used to identify whether it is going
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* to sleep or has just been awakened. We use the
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* lowest 2 bits as indication infomation, 3 means
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* being awakened, 1 means going to sleep */
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STRUCT_END(RvCoreCriticalSleepFrame)
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#if defined(_ASMLANGUAGE) || defined(__ASSEMBLER__)
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#define RV_SLEEP_CTX_SZ1 RvCoreCriticalSleepFrameSize
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#else
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#define RV_SLEEP_CTX_SZ1 sizeof(RvCoreCriticalSleepFrame)
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#endif
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/*
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* Sleep stack frame size, after align up to 16 bytes boundary
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*/
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#define RV_SLEEP_CTX_FRMSZ (ALIGNUP(0x10, RV_SLEEP_CTX_SZ1))
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/*
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* -------------------------------------------------------------------------------
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* RISC-V CORE NON-CRITICAL REGISTER CONTEXT LAYOUT FOR SLEEP
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* -------------------------------------------------------------------------------
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*/
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STRUCT_BEGIN
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STRUCT_FIELD (long, 4, RV_SLP_CTX_MSCRATCH, mscratch)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_MIDELEG, mideleg)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_MISA, misa)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_TSELECT, tselect)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_TDATA1, tdata1)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_TDATA2, tdata2)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_TCONTROL, tcontrol)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_PMPCFG0, pmpcfg0)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_PMPCFG1, pmpcfg1)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_PMPCFG2, pmpcfg2)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_PMPCFG3, pmpcfg3)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_PMPADDR0, pmpaddr0)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_PMPADDR1, pmpaddr1)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_PMPADDR2, pmpaddr2)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_PMPADDR3, pmpaddr3)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_PMPADDR4, pmpaddr4)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_PMPADDR5, pmpaddr5)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_PMPADDR6, pmpaddr6)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_PMPADDR7, pmpaddr7)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_PMPADDR8, pmpaddr8)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_PMPADDR9, pmpaddr9)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_PMPADDR10, pmpaddr10)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_PMPADDR11, pmpaddr11)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_PMPADDR12, pmpaddr12)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_PMPADDR13, pmpaddr13)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_PMPADDR14, pmpaddr14)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_PMPADDR15, pmpaddr15)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_UTVEC, utvec)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_USTATUS, ustatus)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_UEPC, uepc)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_UCAUSE, ucause)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_MPCER, mpcer)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_MPCMR, mpcmr)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_MPCCR, mpccr)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_CPU_TESTBUS_CTRL, cpu_testbus_ctrl)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_UPCER, upcer)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_UPCMR, upcmr)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_UPCCR, upccr)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_UGPIO_OEN, ugpio_oen)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_UGPIO_IN, ugpio_in)
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STRUCT_FIELD (long, 4, RV_SLP_CTX_UGPIO_OUT, ugpio_out)
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STRUCT_END(RvCoreNonCriticalSleepFrame)
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#endif /* #ifndef __RVSLEEP_FRAMES_H__ */
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