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ee6321fa14
Add cpu reset cause in common cpu-info file. This would help to print the reset cause for various resets. Right now it support rk3288, rk3399. rest of rockchip platforms doesn't have reset cause support ye but this code is more feasible to extend the same. Reviewed-by: Kever Yang <kever.yang@rock-chips.com> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
66 lines
1.3 KiB
C
66 lines
1.3 KiB
C
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
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/*
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* (C) Copyright 2019 Amarula Solutions(India)
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* Author: Jagan Teki <jagan@amarulasolutions.com>
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/arch-rockchip/clock.h>
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#include <asm/arch-rockchip/cru.h>
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#include <asm/arch-rockchip/hardware.h>
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#include <linux/err.h>
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static char *get_reset_cause(void)
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{
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struct rockchip_cru *cru = rockchip_get_cru();
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char *cause = NULL;
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if (IS_ERR(cru))
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return cause;
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switch (cru->glb_rst_st) {
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case GLB_POR_RST:
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cause = "POR";
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break;
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case FST_GLB_RST_ST:
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case SND_GLB_RST_ST:
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cause = "RST";
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break;
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case FST_GLB_TSADC_RST_ST:
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case SND_GLB_TSADC_RST_ST:
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cause = "THERMAL";
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break;
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case FST_GLB_WDT_RST_ST:
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case SND_GLB_WDT_RST_ST:
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cause = "WDOG";
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break;
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default:
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cause = "unknown reset";
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}
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/**
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* reset_reason env is used by rk3288, due to special use case
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* to figure it the boot behavior. so keep this as it is.
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*/
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env_set("reset_reason", cause);
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/*
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* Clear glb_rst_st, so we can determine the last reset cause
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* for following resets.
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*/
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rk_clrreg(&cru->glb_rst_st, GLB_RST_ST_MASK);
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return cause;
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}
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int print_cpuinfo(void)
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{
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printf("SoC: Rockchip %s\n", CONFIG_SYS_SOC);
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printf("Reset cause: %s\n", get_reset_cause());
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/* TODO print operating temparature and clock */
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return 0;
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}
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