86 lines
2 KiB
C
86 lines
2 KiB
C
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/*
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* Copyright (c) 2011-2020 yanggq.young@allwinnertech.com
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*/
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#include "pm_types.h"
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#include "pm_i.h"
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static u32 *sram_pbase;
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/*
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***************************************************************************
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* MEM SRAM INIT
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*
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* Description: mem sram init.
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*
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* Arguments : none.
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*
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* Returns : 0/-1;
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***************************************************************************
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*/
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__s32 mem_sram_init(void)
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{
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#ifdef CONFIG_FPGA_V4_PLATFORM
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sram_pbase = AW_SRAMCTRL_BASE;
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#else
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u32 *base = 0;
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u32 sram_len = 0;
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#ifndef CONFIG_ARCH_SUN8IW11P1
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pm_get_dev_info("sram_ctrl", 0, &base, &sram_len);
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#else
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pm_get_dev_info("sram-controller", 0, &base, &sram_len);
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#endif
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sram_pbase = base;
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#endif
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return 0;
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}
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/*
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***************************************************************************
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* MEM SRAM SAVE
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*
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* Description: mem sram save.
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*
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* Arguments : none.
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*
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* Returns : 0/-1;
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***************************************************************************
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*/
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__s32 mem_sram_save(struct sram_state *psram_state)
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{
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int i = 0;
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/*save all the sram reg */
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for (i = 0; i < (SRAM_REG_LENGTH); i++) {
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psram_state->sram_reg_back[i] =
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*(volatile __u32 *)((sram_pbase) + i);
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}
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return 0;
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}
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/*
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***************************************************************************
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* MEM sram restore
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*
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* Description: mem sram restore.
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*
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* Arguments : none.
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*
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* Returns : 0/-1;
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***************************************************************************
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*/
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__s32 mem_sram_restore(struct sram_state *psram_state)
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{
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int i = 0;
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/*restore all the sram reg */
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for (i = 0; i < (SRAM_REG_LENGTH); i++) {
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*(volatile __u32 *)((sram_pbase) + i) =
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psram_state->sram_reg_back[i];
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}
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return 0;
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}
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