void spl_board_init(void)
{
int ret;
struct rk3399_cru *cru = rockchip_get_cru();
/*
* The RK3399 resets only 'almost all logic' (see also in the TRM
* "3.9.4 Global software reset"), when issuing a software reset.
* This may cause issues during boot-up for some configurations of
* the application software stack.
*
* To work around this, we test whether the last reset reason was
* a power-on reset and (if not) issue an overtemp-reset to reset
* the entire module.
*
* While this was previously fixed by modifying the various places
* that could generate a software reset (e.g. U-Boot's sysreset
* driver, the ATF or Linux), we now have it here to ensure that
* we no longer have to track this through the various components.
*/
if (cru->glb_rst_st != 0)
rk3399_force_power_on_reset();
/*
* Turning the eMMC and SPI back on (if disabled via the Qseven
* BIOS_ENABLE) signal is done through a always-on regulator).
*/
ret = regulators_enable_boot_on(false);
if (ret)
debug("%s: Cannot enable boot on regulator\n", __func__);
preloader_console_init();
}
int rk3036_sysreset_request(struct udevice *dev, enum sysreset_t type)
{
struct rk3036_cru *cru = rockchip_get_cru();
if (IS_ERR(cru))
return PTR_ERR(cru);
switch (type) {
case SYSRESET_WARM:
writel(0xeca8, &cru->cru_glb_srst_snd_value);
break;
case SYSRESET_COLD:
writel(0xfdb9, &cru->cru_glb_srst_fst_value);
break;
default:
return -EPROTONOSUPPORT;
}
return -EINPROGRESS;
}
int rk3288_reset_request(struct udevice *dev, enum reset_t type)
{
struct rk3288_cru *cru = rockchip_get_cru();
if (IS_ERR(cru))
return PTR_ERR(cru);
switch (type) {
case RESET_WARM:
rk_clrreg(&cru->cru_mode_con, 0xffff);
writel(0xeca8, &cru->cru_glb_srst_snd_value);
break;
case RESET_COLD:
rk_clrreg(&cru->cru_mode_con, 0xffff);
writel(0xfdb9, &cru->cru_glb_srst_fst_value);
break;
default:
return -EPROTONOSUPPORT;
}
return -EINPROGRESS;
}
static void rk3288_detect_reset_reason(void)
{
struct rk3288_cru *cru = rockchip_get_cru();
const char *reason;
if (IS_ERR(cru))
return;
switch (cru->cru_glb_rst_st) {
case GLB_POR_RST:
reason = "POR";
break;
case FST_GLB_RST_ST:
case SND_GLB_RST_ST:
reason = "RST";
break;
case FST_GLB_TSADC_RST_ST:
case SND_GLB_TSADC_RST_ST:
reason = "THERMAL";
break;
case FST_GLB_WDT_RST_ST:
case SND_GLB_WDT_RST_ST:
reason = "WDOG";
break;
default:
reason = "unknown reset";
}
env_set("reset_reason", reason);
/*
* Clear cru_glb_rst_st, so we can determine the last reset cause
* for following resets.
*/
rk_clrreg(&cru->cru_glb_rst_st, GLB_RST_ST_MASK);
}