*
* (C) Copyright 2009 Freescale Semiconductor, Inc.
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/errno.h>
#include <asm/io.h>
#include <asm/arch/imx-regs.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/arch/regs-ocotp.h>
#include <asm/arch/clock.h>
#include <asm/arch/sys_proto.h>
#include <asm/imx-common/boot_mode.h>
#include <asm/imx-common/dma.h>
#include <stdbool.h>
+#ifdef CONFIG_VIDEO_IPUV3
+#include <ipu.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define TEMPERATURE_MIN -40
+#define TEMPERATURE_HOT 80
+#define TEMPERATURE_MAX 125
+#define REG_VALUE_TO_CEL(ratio, raw) ((raw_n40c - raw) * 100 / ratio - 40)
+
+#define __data __attribute__((section(".data")))
struct scu_regs {
u32 ctrl;
u32 fpga_rev;
};
+#ifdef CONFIG_HW_WATCHDOG
+#define wdog_base ((void *)WDOG1_BASE_ADDR)
+#define WDOG_WCR 0x00
+#define WCR_WDE (1 << 2)
+#define WDOG_WSR 0x02
+
+void hw_watchdog_reset(void)
+{
+ if (readw(wdog_base + WDOG_WCR) & WCR_WDE) {
+ static u16 __data toggle = 0xaaaa;
+ static int __data first = 1;
+
+ if (first) {
+ printf("Watchdog active\n");
+ first = 0;
+ }
+ writew(toggle, wdog_base + WDOG_WSR);
+ toggle ^= 0xffff;
+ }
+}
+#endif
+
u32 get_cpu_rev(void)
{
struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
* Possible values are from 0.725V to 1.450V in steps of
* 0.025V (25mV).
*/
-void set_vddsoc(u32 mv)
+static void set_vddsoc(u32 mv)
{
struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
u32 val, reg = readl(&anatop->reg_core);
writel(reg, &anatop->reg_core);
}
+static u32 __data thermal_calib;
+
+int read_cpu_temperature(void)
+{
+ unsigned int reg, tmp, i;
+ unsigned int raw_25c, raw_hot, hot_temp, raw_n40c, ratio;
+ int temperature;
+ struct anatop_regs *const anatop = (void *)ANATOP_BASE_ADDR;
+ struct mx6_ocotp_regs *const ocotp_regs = (void *)OCOTP_BASE_ADDR;
+
+ if (!thermal_calib) {
+ ocotp_clk_enable();
+ writel(1, &ocotp_regs->hw_ocotp_read_ctrl);
+ thermal_calib = readl(&ocotp_regs->hw_ocotp_ana1);
+ writel(0, &ocotp_regs->hw_ocotp_read_ctrl);
+ ocotp_clk_disable();
+ }
+
+ if (thermal_calib == 0 || thermal_calib == 0xffffffff)
+ return TEMPERATURE_MIN;
+
+ /* Fuse data layout:
+ * [31:20] sensor value @ 25C
+ * [19:8] sensor value of hot
+ * [7:0] hot temperature value */
+ raw_25c = thermal_calib >> 20;
+ raw_hot = (thermal_calib & 0xfff00) >> 8;
+ hot_temp = thermal_calib & 0xff;
+
+ ratio = ((raw_25c - raw_hot) * 100) / (hot_temp - 25);
+ raw_n40c = raw_25c + (13 * ratio) / 20;
+
+ /* now we only using single measure, every time we measure
+ the temperature, we will power on/down the anadig module*/
+ writel(BM_ANADIG_TEMPSENSE0_POWER_DOWN, &anatop->tempsense0_clr);
+ writel(BM_ANADIG_ANA_MISC0_REFTOP_SELBIASOFF, &anatop->ana_misc0_set);
+
+ /* write measure freq */
+ reg = readl(&anatop->tempsense1);
+ reg &= ~BM_ANADIG_TEMPSENSE1_MEASURE_FREQ;
+ reg |= 327;
+ writel(reg, &anatop->tempsense1);
+
+ writel(BM_ANADIG_TEMPSENSE0_MEASURE_TEMP, &anatop->tempsense0_clr);
+ writel(BM_ANADIG_TEMPSENSE0_FINISHED, &anatop->tempsense0_clr);
+ writel(BM_ANADIG_TEMPSENSE0_MEASURE_TEMP, &anatop->tempsense0_set);
+
+ tmp = 0;
+ /* read five times of temperature values to get average*/
+ for (i = 0; i < 5; i++) {
+ while ((readl(&anatop->tempsense0) &
+ BM_ANADIG_TEMPSENSE0_FINISHED) == 0)
+ udelay(10000);
+ reg = readl(&anatop->tempsense0);
+ tmp += (reg & BM_ANADIG_TEMPSENSE0_TEMP_VALUE) >>
+ BP_ANADIG_TEMPSENSE0_TEMP_VALUE;
+ writel(BM_ANADIG_TEMPSENSE0_FINISHED,
+ &anatop->tempsense0_clr);
+ }
+
+ tmp = tmp / 5;
+ if (tmp <= raw_n40c)
+ temperature = REG_VALUE_TO_CEL(ratio, tmp);
+ else
+ temperature = TEMPERATURE_MIN;
+
+ /* power down anatop thermal sensor */
+ writel(BM_ANADIG_TEMPSENSE0_POWER_DOWN, &anatop->tempsense0_set);
+ writel(BM_ANADIG_ANA_MISC0_REFTOP_SELBIASOFF, &anatop->ana_misc0_clr);
+
+ return temperature;
+}
+
+int check_cpu_temperature(int boot)
+{
+ static int __data max_temp;
+ int boot_limit = TEMPERATURE_HOT;
+ int tmp = read_cpu_temperature();
+
+ if (tmp < TEMPERATURE_MIN || tmp > TEMPERATURE_MAX) {
+ printf("Temperature: can't get valid data!\n");
+ return tmp;
+ }
+
+ while (tmp >= boot_limit) {
+ if (boot) {
+ printf("CPU is %d C, too hot to boot, waiting...\n",
+ tmp);
+ udelay(5000000);
+ tmp = read_cpu_temperature();
+ boot_limit = TEMPERATURE_HOT - 1;
+ } else {
+ printf("CPU is %d C, too hot, resetting...\n",
+ tmp);
+ udelay(1000000);
+ reset_cpu(0);
+ }
+ }
+
+ if (boot) {
+ printf("Temperature: %d C, calibration data 0x%x\n",
+ tmp, thermal_calib);
+ } else if (tmp > max_temp) {
+ if (tmp > TEMPERATURE_HOT - 5)
+ printf("WARNING: CPU temperature %d C\n", tmp);
+ max_temp = tmp;
+ }
+ return tmp;
+}
+
static void imx_set_wdog_powerdown(bool enable)
{
struct wdog_regs *wdog1 = (struct wdog_regs *)WDOG1_BASE_ADDR;
writew(enable, &wdog2->wmcr);
}
+#ifdef CONFIG_ARCH_CPU_INIT
int arch_cpu_init(void)
{
init_aips();
imx_set_wdog_powerdown(false); /* Disable PDE bit of WMCR register */
-#ifdef CONFIG_APBH_DMA
- /* Start APBH DMA */
+#ifdef CONFIG_VIDEO_IPUV3
+ gd->arch.ipu_hw_rev = IPUV3_HW_REV_IPUV3H;
+#endif
+#ifdef CONFIG_APBH_DMA
+ /* Timer is required for Initializing APBH DMA */
+ timer_init();
mxs_dma_init();
#endif
-
return 0;
}
+#endif
#ifndef CONFIG_SYS_DCACHE_OFF
void enable_caches(void)
u32 value = readl(&fuse->mac_addr_high);
mac[0] = (value >> 8);
- mac[1] = value ;
+ mac[1] = value;
value = readl(&fuse->mac_addr_low);
- mac[2] = value >> 24 ;
- mac[3] = value >> 16 ;
- mac[4] = value >> 8 ;
- mac[5] = value ;
-
+ mac[2] = value >> 24;
+ mac[3] = value >> 16;
+ mac[4] = value >> 8;
+ mac[5] = value;
}
#endif
projects / karo-tx-uboot.git / blobdiff