162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 262306a36Sopenharmony_ci * 362306a36Sopenharmony_ci * AP325RXA sdram self/auto-refresh setup code 462306a36Sopenharmony_ci * 562306a36Sopenharmony_ci * Copyright (C) 2009 Magnus Damm 662306a36Sopenharmony_ci */ 762306a36Sopenharmony_ci 862306a36Sopenharmony_ci#include <linux/sys.h> 962306a36Sopenharmony_ci#include <linux/errno.h> 1062306a36Sopenharmony_ci#include <linux/linkage.h> 1162306a36Sopenharmony_ci#include <asm/asm-offsets.h> 1262306a36Sopenharmony_ci#include <asm/suspend.h> 1362306a36Sopenharmony_ci#include <asm/romimage-macros.h> 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_ci/* code to enter and leave self-refresh. must be self-contained. 1662306a36Sopenharmony_ci * this code will be copied to on-chip memory and executed from there. 1762306a36Sopenharmony_ci */ 1862306a36Sopenharmony_ci .balign 4 1962306a36Sopenharmony_ciENTRY(ap325rxa_sdram_enter_start) 2062306a36Sopenharmony_ci 2162306a36Sopenharmony_ci /* SBSC: disable power down and put in self-refresh mode */ 2262306a36Sopenharmony_ci mov.l 1f, r4 2362306a36Sopenharmony_ci mov.l 2f, r1 2462306a36Sopenharmony_ci mov.l @r4, r2 2562306a36Sopenharmony_ci or r1, r2 2662306a36Sopenharmony_ci mov.l 3f, r3 2762306a36Sopenharmony_ci and r3, r2 2862306a36Sopenharmony_ci mov.l r2, @r4 2962306a36Sopenharmony_ci 3062306a36Sopenharmony_ci rts 3162306a36Sopenharmony_ci nop 3262306a36Sopenharmony_ci 3362306a36Sopenharmony_ci .balign 4 3462306a36Sopenharmony_ci1: .long 0xfe400008 /* SDCR0 */ 3562306a36Sopenharmony_ci2: .long 0x00000400 3662306a36Sopenharmony_ci3: .long 0xffff7fff 3762306a36Sopenharmony_ciENTRY(ap325rxa_sdram_enter_end) 3862306a36Sopenharmony_ci 3962306a36Sopenharmony_ci .balign 4 4062306a36Sopenharmony_ciENTRY(ap325rxa_sdram_leave_start) 4162306a36Sopenharmony_ci 4262306a36Sopenharmony_ci /* SBSC: set auto-refresh mode */ 4362306a36Sopenharmony_ci mov.l 1f, r4 4462306a36Sopenharmony_ci mov.l @r4, r0 4562306a36Sopenharmony_ci mov.l 4f, r1 4662306a36Sopenharmony_ci and r1, r0 4762306a36Sopenharmony_ci mov.l r0, @r4 4862306a36Sopenharmony_ci mov.l 6f, r4 4962306a36Sopenharmony_ci mov.l 8f, r0 5062306a36Sopenharmony_ci mov.l @r4, r1 5162306a36Sopenharmony_ci mov #-1, r4 5262306a36Sopenharmony_ci add r4, r1 5362306a36Sopenharmony_ci or r1, r0 5462306a36Sopenharmony_ci mov.l 7f, r1 5562306a36Sopenharmony_ci mov.l r0, @r1 5662306a36Sopenharmony_ci 5762306a36Sopenharmony_ci rts 5862306a36Sopenharmony_ci nop 5962306a36Sopenharmony_ci 6062306a36Sopenharmony_ci .balign 4 6162306a36Sopenharmony_ci1: .long 0xfe400008 /* SDCR0 */ 6262306a36Sopenharmony_ci4: .long 0xfffffbff 6362306a36Sopenharmony_ci6: .long 0xfe40001c /* RTCOR */ 6462306a36Sopenharmony_ci7: .long 0xfe400018 /* RTCNT */ 6562306a36Sopenharmony_ci8: .long 0xa55a0000 6662306a36Sopenharmony_ciENTRY(ap325rxa_sdram_leave_end) 67