Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
67 lines
1.2 KiB
ArmAsm
67 lines
1.2 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0
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*
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* Migo-R sdram self/auto-refresh setup code
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*
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* Copyright (C) 2009 Magnus Damm
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*/
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#include <linux/sys.h>
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#include <linux/errno.h>
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#include <linux/linkage.h>
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#include <asm/asm-offsets.h>
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#include <asm/suspend.h>
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#include <asm/romimage-macros.h>
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/* code to enter and leave self-refresh. must be self-contained.
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* this code will be copied to on-chip memory and executed from there.
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*/
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.balign 4
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ENTRY(migor_sdram_enter_start)
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/* SBSC: disable power down and put in self-refresh mode */
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mov.l 1f, r4
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mov.l 2f, r1
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mov.l @r4, r2
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or r1, r2
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mov.l 3f, r3
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and r3, r2
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mov.l r2, @r4
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rts
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nop
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.balign 4
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1: .long 0xfe400008 /* SDCR0 */
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2: .long 0x00000400
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3: .long 0xffff7fff
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ENTRY(migor_sdram_enter_end)
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.balign 4
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ENTRY(migor_sdram_leave_start)
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/* SBSC: set auto-refresh mode */
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mov.l 1f, r4
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mov.l @r4, r0
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mov.l 4f, r1
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and r1, r0
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mov.l r0, @r4
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mov.l 6f, r4
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mov.l 8f, r0
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mov.l @r4, r1
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mov #-1, r4
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add r4, r1
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or r1, r0
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mov.l 7f, r1
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mov.l r0, @r1
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rts
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nop
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.balign 4
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1: .long 0xfe400008 /* SDCR0 */
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4: .long 0xfffffbff
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6: .long 0xfe40001c /* RTCOR */
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7: .long 0xfe400018 /* RTCNT */
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8: .long 0xa55a0000
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ENTRY(migor_sdram_leave_end)
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