^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Ecovec24 sdram self/auto-refresh setup code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2009 Magnus Damm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/sys.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/linkage.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <asm/asm-offsets.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <asm/suspend.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <asm/romimage-macros.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) /* code to enter and leave self-refresh. must be self-contained.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * this code will be copied to on-chip memory and executed from there.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) .balign 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) ENTRY(ecovec24_sdram_enter_start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /* DBSC: put memory in self-refresh mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) ED 0xFD000010, 0x00000000 /* DBEN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) ED 0xFD000040, 0x00000000 /* DBRFPDN0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) ED 0xFD000014, 0x00000002 /* DBCMDCNT (PALL) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) ED 0xFD000014, 0x00000004 /* DBCMDCNT (REF) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) ED 0xFD000040, 0x00000001 /* DBRFPDN0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) rts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) ENTRY(ecovec24_sdram_enter_end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) .balign 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) ENTRY(ecovec24_sdram_leave_start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) mov.l @(SH_SLEEP_MODE, r5), r0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) tst #SUSP_SH_RSTANDBY, r0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) bf resume_rstandby
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) /* DBSC: put memory in auto-refresh mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) ED 0xFD000040, 0x00000000 /* DBRFPDN0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) WAIT 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) ED 0xFD000014, 0x00000002 /* DBCMDCNT (PALL) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) ED 0xFD000014, 0x00000004 /* DBCMDCNT (REF) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) ED 0xFD000010, 0x00000001 /* DBEN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) ED 0xFD000040, 0x00010000 /* DBRFPDN0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) rts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) resume_rstandby:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) /* DBSC: re-initialize and put in auto-refresh */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) ED 0xFD000108, 0x00000181 /* DBPDCNT0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) ED 0xFD000020, 0x015B0002 /* DBCONF */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) ED 0xFD000030, 0x03071502 /* DBTR0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) ED 0xFD000034, 0x02020102 /* DBTR1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) ED 0xFD000038, 0x01090405 /* DBTR2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) ED 0xFD00003C, 0x00000002 /* DBTR3 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) ED 0xFD000008, 0x00000005 /* DBKIND */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) ED 0xFD000040, 0x00000001 /* DBRFPDN0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) ED 0xFD000040, 0x00000000 /* DBRFPDN0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) ED 0xFD000018, 0x00000001 /* DBCKECNT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) mov #100,r0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) WAIT_400NS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) dt r0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) bf WAIT_400NS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) ED 0xFD000014, 0x00000002 /* DBCMDCNT (PALL) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) ED 0xFD000060, 0x00020000 /* DBMRCNT (EMR2) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) ED 0xFD000060, 0x00030000 /* DBMRCNT (EMR3) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) ED 0xFD000060, 0x00010004 /* DBMRCNT (EMR) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) ED 0xFD000060, 0x00000532 /* DBMRCNT (MRS) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) ED 0xFD000014, 0x00000002 /* DBCMDCNT (PALL) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) ED 0xFD000014, 0x00000004 /* DBCMDCNT (REF) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) ED 0xFD000014, 0x00000004 /* DBCMDCNT (REF) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) ED 0xFD000060, 0x00000432 /* DBMRCNT (MRS) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) ED 0xFD000060, 0x000103c0 /* DBMRCNT (EMR) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) ED 0xFD000060, 0x00010040 /* DBMRCNT (EMR) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) mov #100,r0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) WAIT_400NS_2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) dt r0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) bf WAIT_400NS_2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) ED 0xFD000010, 0x00000001 /* DBEN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) ED 0xFD000044, 0x0000050f /* DBRFPDN1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) ED 0xFD000048, 0x236800e6 /* DBRFPDN2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) mov.l DUMMY,r0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) mov.l @r0, r1 /* force single dummy read */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) ED 0xFD000014, 0x00000002 /* DBCMDCNT (PALL) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) ED 0xFD000014, 0x00000004 /* DBCMDCNT (REF) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) ED 0xFD000108, 0x00000080 /* DBPDCNT0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) ED 0xFD000040, 0x00010000 /* DBRFPDN0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) rts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) .balign 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) DUMMY: .long 0xac400000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) ENTRY(ecovec24_sdram_leave_end)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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