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authorDavid Hendricks <dhendrix@chromium.org>2013-04-18 14:21:15 -0700
committerDavid Hendricks <dhendrix@chromium.org>2013-04-19 04:19:16 +0200
commitcd14ed71bb25bf04ea450bdbd02805be5f9b1941 (patch)
treeacb5f414fa9d315acf3f1ef18a57712cb6d28efb /src
parent90a70093b1ca20781b7a92dd04500881a94539b2 (diff)
downloadcoreboot-cd14ed71bb25bf04ea450bdbd02805be5f9b1941.tar.xz
[2/3] exynos5: modify thermal management unit code for coreboot
This updates the Exynos TMU code for coreboot: - Remove dependency on device tree - Add Makefile entries Change-Id: I55e1b624d7c7b695b1253ec55f6ae3de8dc671bc Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/3107 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins)
Diffstat (limited to 'src')
-rw-r--r--src/cpu/samsung/exynos5-common/Makefile.inc1
-rw-r--r--src/cpu/samsung/exynos5-common/exynos-tmu.c167
-rw-r--r--src/cpu/samsung/exynos5-common/exynos-tmu.h132
-rw-r--r--src/cpu/samsung/exynos5250/Makefile.inc1
-rw-r--r--src/cpu/samsung/exynos5250/cpu.h2
-rw-r--r--src/cpu/samsung/exynos5250/exynos-tmu.h82
-rw-r--r--src/cpu/samsung/exynos5250/exynos5250-tmu.c45
7 files changed, 203 insertions, 227 deletions
diff --git a/src/cpu/samsung/exynos5-common/Makefile.inc b/src/cpu/samsung/exynos5-common/Makefile.inc
index 6911b70765..6331863440 100644
--- a/src/cpu/samsung/exynos5-common/Makefile.inc
+++ b/src/cpu/samsung/exynos5-common/Makefile.inc
@@ -21,3 +21,4 @@ ramstage-y += gpio.c
ramstage-y += i2c.c
ramstage-y += s5p-dp-reg.c
ramstage-y += exynos-fb.c
+ramstage-y += exynos-tmu.c
diff --git a/src/cpu/samsung/exynos5-common/exynos-tmu.c b/src/cpu/samsung/exynos5-common/exynos-tmu.c
index f908076a85..26777fca23 100644
--- a/src/cpu/samsung/exynos5-common/exynos-tmu.c
+++ b/src/cpu/samsung/exynos5-common/exynos-tmu.c
@@ -2,11 +2,12 @@
* Copyright (c) 2012 Samsung Electronics Co., Ltd.
* http://www.samsung.com
* Akshay Saraswat <Akshay.s@samsung.com>
+ * Copyright (c) 2013 Google Inc.
*
* EXYNOS - Thermal Management Unit
*
- * See file CREDITS for list of people who contributed to this
- * project.
+ * This file was originally imported from Das U-Boot and then re-factored
+ * for coreboot.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -17,11 +18,11 @@
* MA 02111-1307 USA
*/
-#include <common.h>
-#include <errno.h>
-#include <fdtdec.h>
-#include <asm/arch/exynos-tmu.h>
-#include <asm/arch/power.h>
+#include <arch/io.h>
+#include <cpu/samsung/exynos5-common/power.h>
+#include <cpu/samsung/exynos5-common/exynos-tmu.h>
+
+#include <console/console.h>
#define TRIMINFO_RELOAD 1
#define CORE_EN 1
@@ -46,55 +47,6 @@
INTCLEAR_RISE2 | INTCLEAR_FALL0 | \
INTCLEAR_FALL1 | INTCLEAR_FALL2)
-/* Tmeperature threshold values for various thermal events */
-struct temperature_params {
- /* minimum value in temperature code range */
- unsigned int min_val;
- /* maximum value in temperature code range */
- unsigned int max_val;
- /* temperature threshold to start warning */
- unsigned int start_warning;
- /* temperature threshold CPU tripping */
- unsigned int start_tripping;
- /* temperature threshold for HW tripping */
- unsigned int hardware_tripping;
-};
-
-/* Pre-defined values and thresholds for calibration of current temperature */
-struct tmu_data {
- /* pre-defined temperature thresholds */
- struct temperature_params ts;
- /* pre-defined efuse range minimum value */
- unsigned int efuse_min_value;
- /* pre-defined efuse value for temperature calibration */
- unsigned int efuse_value;
- /* pre-defined efuse range maximum value */
- unsigned int efuse_max_value;
- /* current temperature sensing slope */
- unsigned int slope;
-};
-
-/* TMU device specific details and status */
-struct tmu_info {
- /* base Address for the TMU */
- unsigned tmu_base;
- /* mux Address for the TMU */
- int tmu_mux;
- /* pre-defined values for calibration and thresholds */
- struct tmu_data data;
- /* value required for triminfo_25 calibration */
- unsigned int te1;
- /* value required for triminfo_85 calibration */
- unsigned int te2;
- /* TMU DC value for threshold calculation */
- int dc_value;
- /* enum value indicating status of the TMU */
- int tmu_state;
-};
-
-/* Global struct tmu_info variable to store init values */
-static struct tmu_info gbl_info;
-
/*
* After reading temperature code from register, compensating
* its value and calculating celsius temperatue,
@@ -102,7 +54,7 @@ static struct tmu_info gbl_info;
*
* @return current temperature of the chip as sensed by TMU
*/
-int get_cur_temp(struct tmu_info *info)
+static int get_cur_temp(struct tmu_info *info)
{
int cur_temp;
struct tmu_reg *reg = (struct tmu_reg *)info->tmu_base;
@@ -120,19 +72,20 @@ int get_cur_temp(struct tmu_info *info)
/*
* Monitors status of the TMU device and exynos temperature
*
- * @param temp pointer to the current temperature value
+ * @info TMU info
+ * @temp pointer to the current temperature value
* @return enum tmu_status_t value, code indicating event to execute
*/
-enum tmu_status_t tmu_monitor(int *temp)
+enum tmu_status_t tmu_monitor(struct tmu_info *info, int *temp)
{
- if (gbl_info.tmu_state == TMU_STATUS_INIT)
+ if (info->tmu_state == TMU_STATUS_INIT)
return -1;
int cur_temp;
- struct tmu_data *data = &gbl_info.data;
+ struct tmu_data *data = &info->data;
/* Read current temperature of the SOC */
- cur_temp = get_cur_temp(&gbl_info);
+ cur_temp = get_cur_temp(info);
*temp = cur_temp;
/* Temperature code lies between min 25 and max 125 */
@@ -146,93 +99,20 @@ enum tmu_status_t tmu_monitor(int *temp)
return TMU_STATUS_NORMAL;
/* Temperature code does not lie between min 25 and max 125 */
else {
- gbl_info.tmu_state = TMU_STATUS_INIT;
- debug("EXYNOS_TMU: Thermal reading failed\n");
+ info->tmu_state = TMU_STATUS_INIT;
+ printk(BIOS_DEBUG, "EXYNOS_TMU: Thermal reading failed\n");
return -1;
}
return 0;
}
/*
- * Get TMU specific pre-defined values from FDT
- *
- * @param info pointer to the tmu_info struct
- * @param blob FDT blob
- * @return int value, 0 for success
- */
-int get_tmu_fdt_values(struct tmu_info *info, const void *blob)
-{
- int node;
- int error = 0;
-
- /* Get the node from FDT for TMU */
- node = fdtdec_next_compatible(blob, 0,
- COMPAT_SAMSUNG_EXYNOS_TMU);
- if (node < 0) {
- debug("EXYNOS_TMU: No node for tmu in device tree\n");
- return -1;
- }
-
- /*
- * Get the pre-defined TMU specific values from FDT.
- * All of these are expected to be correct otherwise
- * miscalculation of register values in tmu_setup_parameters
- * may result in misleading current temperature.
- */
- info->tmu_base = fdtdec_get_addr(blob, node, "reg");
- if (info->tmu_base == FDT_ADDR_T_NONE) {
- debug("%s: Missing tmu-base\n", __func__);
- return -1;
- }
- info->tmu_mux = fdtdec_get_int(blob,
- node, "samsung,mux", -1);
- error |= info->tmu_mux;
- info->data.ts.min_val = fdtdec_get_int(blob,
- node, "samsung,min-temp", -1);
- error |= info->data.ts.min_val;
- info->data.ts.max_val = fdtdec_get_int(blob,
- node, "samsung,max-temp", -1);
- error |= info->data.ts.max_val;
- info->data.ts.start_warning = fdtdec_get_int(blob,
- node, "samsung,start-warning", -1);
- error |= info->data.ts.start_warning;
- info->data.ts.start_tripping = fdtdec_get_int(blob,
- node, "samsung,start-tripping", -1);
- error |= info->data.ts.start_tripping;
- info->data.ts.hardware_tripping = fdtdec_get_int(blob,
- node, "samsung,hw-tripping", -1);
- error |= info->data.ts.hardware_tripping;
- info->data.efuse_min_value = fdtdec_get_int(blob,
- node, "samsung,efuse-min-value", -1);
- error |= info->data.efuse_min_value;
- info->data.efuse_value = fdtdec_get_int(blob,
- node, "samsung,efuse-value", -1);
- error |= info->data.efuse_value;
- info->data.efuse_max_value = fdtdec_get_int(blob,
- node, "samsung,efuse-max-value", -1);
- error |= info->data.efuse_max_value;
- info->data.slope = fdtdec_get_int(blob,
- node, "samsung,slope", -1);
- error |= info->data.slope;
- info->dc_value = fdtdec_get_int(blob,
- node, "samsung,dc-value", -1);
- error |= info->dc_value;
-
- if (error == -1) {
- debug("fail to get tmu node properties\n");
- return -1;
- }
-
- return 0;
-}
-
-/*
* Calibrate and calculate threshold values and
* enable interrupt levels
*
* @param info pointer to the tmu_info struct
*/
-void tmu_setup_parameters(struct tmu_info *info)
+static void tmu_setup_parameters(struct tmu_info *info)
{
unsigned int te_temp, con;
unsigned int warning_code, trip_code, hwtrip_code;
@@ -302,17 +182,14 @@ void tmu_setup_parameters(struct tmu_info *info)
/*
* Initialize TMU device
*
- * @param blob FDT blob
* @return int value, 0 for success
*/
-int tmu_init(const void *blob)
+int tmu_init(struct tmu_info *info)
{
- gbl_info.tmu_state = TMU_STATUS_INIT;
- if (get_tmu_fdt_values(&gbl_info, blob) < 0)
- return -1;
+ info->tmu_state = TMU_STATUS_INIT;
- tmu_setup_parameters(&gbl_info);
- gbl_info.tmu_state = TMU_STATUS_NORMAL;
+ tmu_setup_parameters(info);
+ info->tmu_state = TMU_STATUS_NORMAL;
return 0;
}
diff --git a/src/cpu/samsung/exynos5-common/exynos-tmu.h b/src/cpu/samsung/exynos5-common/exynos-tmu.h
new file mode 100644
index 0000000000..40eda5626e
--- /dev/null
+++ b/src/cpu/samsung/exynos5-common/exynos-tmu.h
@@ -0,0 +1,132 @@
+/*
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ * Akshay Saraswat <Akshay.s@samsung.com>
+ *
+ * EXYNOS - Thermal Management Unit
+ *
+ * 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 version 2 as
+ * published by the Free Software Foundation.
+ * 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
+ */
+
+#ifndef __EXYNOS_TMU_H
+#define __EXYNOS_TMU_H
+
+struct tmu_reg {
+ unsigned triminfo;
+ unsigned rsvd1;
+ unsigned rsvd2;
+ unsigned rsvd3;
+ unsigned rsvd4;
+ unsigned triminfo_control;
+ unsigned rsvd5;
+ unsigned rsvd6;
+ unsigned tmu_control;
+ unsigned rsvd7;
+ unsigned tmu_status;
+ unsigned sampling_internal;
+ unsigned counter_value0;
+ unsigned counter_value1;
+ unsigned rsvd8;
+ unsigned rsvd9;
+ unsigned current_temp;
+ unsigned rsvd10;
+ unsigned rsvd11;
+ unsigned rsvd12;
+ unsigned threshold_temp_rise;
+ unsigned threshold_temp_fall;
+ unsigned rsvd13;
+ unsigned rsvd14;
+ unsigned past_temp3_0;
+ unsigned past_temp7_4;
+ unsigned past_temp11_8;
+ unsigned past_temp15_12;
+ unsigned inten;
+ unsigned intstat;
+ unsigned intclear;
+ unsigned rsvd15;
+ unsigned emul_con;
+};
+
+enum tmu_status_t {
+ TMU_STATUS_INIT = 0,
+ TMU_STATUS_NORMAL,
+ TMU_STATUS_WARNING,
+ TMU_STATUS_TRIPPED,
+};
+
+/* Tmeperature threshold values for various thermal events */
+struct temperature_params {
+ /* minimum value in temperature code range */
+ unsigned int min_val;
+ /* maximum value in temperature code range */
+ unsigned int max_val;
+ /* temperature threshold to start warning */
+ unsigned int start_warning;
+ /* temperature threshold CPU tripping */
+ unsigned int start_tripping;
+ /* temperature threshold for HW tripping */
+ unsigned int hardware_tripping;
+};
+
+/* Pre-defined values and thresholds for calibration of current temperature */
+struct tmu_data {
+ /* pre-defined temperature thresholds */
+ struct temperature_params ts;
+ /* pre-defined efuse range minimum value */
+ unsigned int efuse_min_value;
+ /* pre-defined efuse value for temperature calibration */
+ unsigned int efuse_value;
+ /* pre-defined efuse range maximum value */
+ unsigned int efuse_max_value;
+ /* current temperature sensing slope */
+ unsigned int slope;
+};
+
+/* TMU device specific details and status */
+struct tmu_info {
+ /* base Address for the TMU */
+ unsigned tmu_base;
+ /* mux Address for the TMU */
+ int tmu_mux;
+ /* pre-defined values for calibration and thresholds */
+ struct tmu_data data;
+ /* value required for triminfo_25 calibration */
+ unsigned int te1;
+ /* value required for triminfo_85 calibration */
+ unsigned int te2;
+ /* TMU DC value for threshold calculation */
+ int dc_value;
+ /* enum value indicating status of the TMU */
+ int tmu_state;
+};
+
+extern struct tmu_info *tmu_info;
+
+/*
+ * Monitors status of the TMU device and exynos temperature
+ *
+ * @info pointer to TMU info struct
+ * @temp pointer to the current temperature value
+ * @return enum tmu_status_t value, code indicating event to execute
+ * and -1 on error
+ */
+enum tmu_status_t tmu_monitor(struct tmu_info *info, int *temp);
+
+/*
+ * Initialize TMU device
+ *
+ * @info pointer to TMU info struct
+ * @return int value, 0 for success
+ */
+int tmu_init(struct tmu_info *info);
+
+#endif /* EXYNOS_TMU_H */
diff --git a/src/cpu/samsung/exynos5250/Makefile.inc b/src/cpu/samsung/exynos5250/Makefile.inc
index 1046b8bc0b..8788a6c88e 100644
--- a/src/cpu/samsung/exynos5250/Makefile.inc
+++ b/src/cpu/samsung/exynos5250/Makefile.inc
@@ -28,6 +28,7 @@ ramstage-y += power.c
ramstage-y += soc.c
ramstage-$(CONFIG_CONSOLE_SERIAL_UART) += uart.c
ramstage-y += cpu.c
+ramstage-y += exynos5250-tmu.c
ramstage-y += mct.c
#ramstage-$(CONFIG_SATA_AHCI) += sata.c
diff --git a/src/cpu/samsung/exynos5250/cpu.h b/src/cpu/samsung/exynos5250/cpu.h
index a356e19990..cff966ee98 100644
--- a/src/cpu/samsung/exynos5250/cpu.h
+++ b/src/cpu/samsung/exynos5250/cpu.h
@@ -120,4 +120,6 @@ enum periph_id exynos5_get_periph_id(unsigned base_addr);
void exynos5250_config_l2_cache(void);
+extern struct tmu_info exynos5250_tmu_info;
+
#endif /* _EXYNOS5250_CPU_H */
diff --git a/src/cpu/samsung/exynos5250/exynos-tmu.h b/src/cpu/samsung/exynos5250/exynos-tmu.h
deleted file mode 100644
index ad9e394456..0000000000
--- a/src/cpu/samsung/exynos5250/exynos-tmu.h
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
- * Copyright (c) 2012 Samsung Electronics Co., Ltd.
- * http://www.samsung.com
- * Akshay Saraswat <Akshay.s@samsung.com>
- *
- * EXYNOS - Thermal Management Unit
- *
- * 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 version 2 as
- * published by the Free Software Foundation.
- * 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
- */
-
-#ifndef __ASM_ARCH_THERMAL_H
-#define __ASM_ARCH_THERMAL_H
-
-struct tmu_reg {
- unsigned triminfo;
- unsigned rsvd1;
- unsigned rsvd2;
- unsigned rsvd3;
- unsigned rsvd4;
- unsigned triminfo_control;
- unsigned rsvd5;
- unsigned rsvd6;
- unsigned tmu_control;
- unsigned rsvd7;
- unsigned tmu_status;
- unsigned sampling_internal;
- unsigned counter_value0;
- unsigned counter_value1;
- unsigned rsvd8;
- unsigned rsvd9;
- unsigned current_temp;
- unsigned rsvd10;
- unsigned rsvd11;
- unsigned rsvd12;
- unsigned threshold_temp_rise;
- unsigned threshold_temp_fall;
- unsigned rsvd13;
- unsigned rsvd14;
- unsigned past_temp3_0;
- unsigned past_temp7_4;
- unsigned past_temp11_8;
- unsigned past_temp15_12;
- unsigned inten;
- unsigned intstat;
- unsigned intclear;
- unsigned rsvd15;
- unsigned emul_con;
-};
-
-enum tmu_status_t {
- TMU_STATUS_INIT = 0,
- TMU_STATUS_NORMAL,
- TMU_STATUS_WARNING,
- TMU_STATUS_TRIPPED,
-};
-
-/*
- * Monitors status of the TMU device and exynos temperature
- *
- * @param temp pointer to the current temperature value
- * @return enum tmu_status_t value, code indicating event to execute
- * and -1 on error
- */
-enum tmu_status_t tmu_monitor(int *temp);
-
-/*
- * Initialize TMU device
- *
- * @param blob FDT blob
- * @return int value, 0 for success
- */
-int tmu_init(const void *blob);
-#endif
diff --git a/src/cpu/samsung/exynos5250/exynos5250-tmu.c b/src/cpu/samsung/exynos5250/exynos5250-tmu.c
new file mode 100644
index 0000000000..7d8397c568
--- /dev/null
+++ b/src/cpu/samsung/exynos5250/exynos5250-tmu.c
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2013 Google 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
+ *
+ * This file contains Exynos5250-specific TMU information.
+ */
+
+#include <cpu/samsung/exynos5-common/exynos-tmu.h>
+#include <cpu/samsung/exynos5250/cpu.h>
+
+struct tmu_info exynos5250_tmu_info = {
+ .tmu_base = 0x10060000,
+ .tmu_mux = 6,
+ .data = {
+ .ts = {
+ .min_val = 25,
+ .max_val = 125,
+ .start_warning = 95,
+ .start_tripping = 105,
+ .hardware_tripping = 110,
+ },
+ .efuse_min_value = 40,
+ .efuse_value = 55,
+ .efuse_max_value = 100,
+ .slope = 0x10008802,
+ },
+ .dc_value = 25,
+};