39 lines
866 B
C
39 lines
866 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2019 Frank Wunderlich <frank-w@public-files.de>
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*/
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#include <common.h>
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#include <command.h>
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#include <asm/io.h>
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#include <linux/delay.h>
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#define PWRAP_BASE 0x1000d000
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#define PWRAP_WACS2_CMD 0x9c
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#define PWRAP_CALC(adr, wdata) ((1 << 31) | (((adr) >> 1) << 16) | (wdata))
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#define MT6323_PWRC_BASE 0x8000
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#define RTC_BBPU 0x0000
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#define RTC_BBPU_KEY (0x43 << 8)
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#define RTC_WRTGR 0x003c
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int do_poweroff(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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{
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u32 addr, val;
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addr = PWRAP_BASE + PWRAP_WACS2_CMD;
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val = PWRAP_CALC(MT6323_PWRC_BASE + RTC_BBPU, RTC_BBPU_KEY);
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writel(val, addr);
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mdelay(10);
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val = PWRAP_CALC(MT6323_PWRC_BASE + RTC_WRTGR, 1);
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writel(val, addr);
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// wait some time and then print error
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mdelay(10000);
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printf("Failed to power off!!!\n");
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return 1;
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}
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