[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)
This commit is contained in:
David Hendricks
@@ -21,3 +21,4 @@ ramstage-y += gpio.c
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ramstage-y += i2c.c
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ramstage-y += s5p-dp-reg.c
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ramstage-y += exynos-fb.c
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ramstage-y += exynos-tmu.c
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@@ -2,11 +2,12 @@
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* Copyright (c) 2012 Samsung Electronics Co., Ltd.
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* http://www.samsung.com
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* Akshay Saraswat <Akshay.s@samsung.com>
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* Copyright (c) 2013 Google Inc.
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*
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* EXYNOS - Thermal Management Unit
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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* This file was originally imported from Das U-Boot and then re-factored
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* for coreboot.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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@@ -17,11 +18,11 @@
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <errno.h>
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#include <fdtdec.h>
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#include <asm/arch/exynos-tmu.h>
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#include <asm/arch/power.h>
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#include <arch/io.h>
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#include <cpu/samsung/exynos5-common/power.h>
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#include <cpu/samsung/exynos5-common/exynos-tmu.h>
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#include <console/console.h>
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#define TRIMINFO_RELOAD 1
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#define CORE_EN 1
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@@ -46,55 +47,6 @@
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INTCLEAR_RISE2 | INTCLEAR_FALL0 | \
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INTCLEAR_FALL1 | INTCLEAR_FALL2)
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/* Tmeperature threshold values for various thermal events */
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struct temperature_params {
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/* minimum value in temperature code range */
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unsigned int min_val;
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/* maximum value in temperature code range */
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unsigned int max_val;
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/* temperature threshold to start warning */
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unsigned int start_warning;
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/* temperature threshold CPU tripping */
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unsigned int start_tripping;
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/* temperature threshold for HW tripping */
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unsigned int hardware_tripping;
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};
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/* Pre-defined values and thresholds for calibration of current temperature */
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struct tmu_data {
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/* pre-defined temperature thresholds */
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struct temperature_params ts;
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/* pre-defined efuse range minimum value */
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unsigned int efuse_min_value;
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/* pre-defined efuse value for temperature calibration */
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unsigned int efuse_value;
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/* pre-defined efuse range maximum value */
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unsigned int efuse_max_value;
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/* current temperature sensing slope */
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unsigned int slope;
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};
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/* TMU device specific details and status */
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struct tmu_info {
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/* base Address for the TMU */
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unsigned tmu_base;
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/* mux Address for the TMU */
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int tmu_mux;
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/* pre-defined values for calibration and thresholds */
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struct tmu_data data;
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/* value required for triminfo_25 calibration */
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unsigned int te1;
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/* value required for triminfo_85 calibration */
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unsigned int te2;
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/* TMU DC value for threshold calculation */
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int dc_value;
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/* enum value indicating status of the TMU */
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int tmu_state;
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};
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/* Global struct tmu_info variable to store init values */
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static struct tmu_info gbl_info;
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/*
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* After reading temperature code from register, compensating
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* its value and calculating celsius temperatue,
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@@ -102,7 +54,7 @@ static struct tmu_info gbl_info;
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*
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* @return current temperature of the chip as sensed by TMU
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*/
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int get_cur_temp(struct tmu_info *info)
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static int get_cur_temp(struct tmu_info *info)
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{
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int cur_temp;
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struct tmu_reg *reg = (struct tmu_reg *)info->tmu_base;
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@@ -120,19 +72,20 @@ int get_cur_temp(struct tmu_info *info)
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/*
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* Monitors status of the TMU device and exynos temperature
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*
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* @param temp pointer to the current temperature value
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* @info TMU info
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* @temp pointer to the current temperature value
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* @return enum tmu_status_t value, code indicating event to execute
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*/
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enum tmu_status_t tmu_monitor(int *temp)
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enum tmu_status_t tmu_monitor(struct tmu_info *info, int *temp)
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{
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if (gbl_info.tmu_state == TMU_STATUS_INIT)
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if (info->tmu_state == TMU_STATUS_INIT)
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return -1;
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int cur_temp;
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struct tmu_data *data = &gbl_info.data;
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struct tmu_data *data = &info->data;
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/* Read current temperature of the SOC */
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cur_temp = get_cur_temp(&gbl_info);
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cur_temp = get_cur_temp(info);
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*temp = cur_temp;
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/* Temperature code lies between min 25 and max 125 */
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@@ -146,93 +99,20 @@ enum tmu_status_t tmu_monitor(int *temp)
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return TMU_STATUS_NORMAL;
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/* Temperature code does not lie between min 25 and max 125 */
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else {
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gbl_info.tmu_state = TMU_STATUS_INIT;
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debug("EXYNOS_TMU: Thermal reading failed\n");
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info->tmu_state = TMU_STATUS_INIT;
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printk(BIOS_DEBUG, "EXYNOS_TMU: Thermal reading failed\n");
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return -1;
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}
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return 0;
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}
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/*
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* Get TMU specific pre-defined values from FDT
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*
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* @param info pointer to the tmu_info struct
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* @param blob FDT blob
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* @return int value, 0 for success
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*/
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int get_tmu_fdt_values(struct tmu_info *info, const void *blob)
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{
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int node;
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int error = 0;
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/* Get the node from FDT for TMU */
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node = fdtdec_next_compatible(blob, 0,
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COMPAT_SAMSUNG_EXYNOS_TMU);
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if (node < 0) {
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debug("EXYNOS_TMU: No node for tmu in device tree\n");
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return -1;
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}
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/*
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* Get the pre-defined TMU specific values from FDT.
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* All of these are expected to be correct otherwise
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* miscalculation of register values in tmu_setup_parameters
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* may result in misleading current temperature.
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*/
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info->tmu_base = fdtdec_get_addr(blob, node, "reg");
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if (info->tmu_base == FDT_ADDR_T_NONE) {
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debug("%s: Missing tmu-base\n", __func__);
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return -1;
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}
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info->tmu_mux = fdtdec_get_int(blob,
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node, "samsung,mux", -1);
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error |= info->tmu_mux;
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info->data.ts.min_val = fdtdec_get_int(blob,
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node, "samsung,min-temp", -1);
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error |= info->data.ts.min_val;
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info->data.ts.max_val = fdtdec_get_int(blob,
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node, "samsung,max-temp", -1);
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error |= info->data.ts.max_val;
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info->data.ts.start_warning = fdtdec_get_int(blob,
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node, "samsung,start-warning", -1);
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error |= info->data.ts.start_warning;
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info->data.ts.start_tripping = fdtdec_get_int(blob,
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node, "samsung,start-tripping", -1);
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error |= info->data.ts.start_tripping;
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info->data.ts.hardware_tripping = fdtdec_get_int(blob,
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node, "samsung,hw-tripping", -1);
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error |= info->data.ts.hardware_tripping;
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info->data.efuse_min_value = fdtdec_get_int(blob,
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node, "samsung,efuse-min-value", -1);
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error |= info->data.efuse_min_value;
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info->data.efuse_value = fdtdec_get_int(blob,
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node, "samsung,efuse-value", -1);
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error |= info->data.efuse_value;
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info->data.efuse_max_value = fdtdec_get_int(blob,
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node, "samsung,efuse-max-value", -1);
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error |= info->data.efuse_max_value;
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info->data.slope = fdtdec_get_int(blob,
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node, "samsung,slope", -1);
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error |= info->data.slope;
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info->dc_value = fdtdec_get_int(blob,
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node, "samsung,dc-value", -1);
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error |= info->dc_value;
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if (error == -1) {
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debug("fail to get tmu node properties\n");
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return -1;
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}
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return 0;
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}
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/*
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* Calibrate and calculate threshold values and
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* enable interrupt levels
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*
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* @param info pointer to the tmu_info struct
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*/
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void tmu_setup_parameters(struct tmu_info *info)
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static void tmu_setup_parameters(struct tmu_info *info)
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{
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unsigned int te_temp, con;
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unsigned int warning_code, trip_code, hwtrip_code;
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@@ -302,17 +182,14 @@ void tmu_setup_parameters(struct tmu_info *info)
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/*
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* Initialize TMU device
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*
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* @param blob FDT blob
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* @return int value, 0 for success
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*/
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int tmu_init(const void *blob)
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int tmu_init(struct tmu_info *info)
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{
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gbl_info.tmu_state = TMU_STATUS_INIT;
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if (get_tmu_fdt_values(&gbl_info, blob) < 0)
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return -1;
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info->tmu_state = TMU_STATUS_INIT;
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tmu_setup_parameters(&gbl_info);
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gbl_info.tmu_state = TMU_STATUS_NORMAL;
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tmu_setup_parameters(info);
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info->tmu_state = TMU_STATUS_NORMAL;
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return 0;
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}
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132
src/cpu/samsung/exynos5-common/exynos-tmu.h
Normal file
132
src/cpu/samsung/exynos5-common/exynos-tmu.h
Normal file
@@ -0,0 +1,132 @@
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/*
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* Copyright (c) 2012 Samsung Electronics Co., Ltd.
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* http://www.samsung.com
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* Akshay Saraswat <Akshay.s@samsung.com>
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*
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* EXYNOS - Thermal Management Unit
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#ifndef __EXYNOS_TMU_H
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#define __EXYNOS_TMU_H
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struct tmu_reg {
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unsigned triminfo;
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unsigned rsvd1;
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unsigned rsvd2;
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unsigned rsvd3;
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unsigned rsvd4;
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unsigned triminfo_control;
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unsigned rsvd5;
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unsigned rsvd6;
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unsigned tmu_control;
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unsigned rsvd7;
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unsigned tmu_status;
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unsigned sampling_internal;
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unsigned counter_value0;
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unsigned counter_value1;
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unsigned rsvd8;
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unsigned rsvd9;
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unsigned current_temp;
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unsigned rsvd10;
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unsigned rsvd11;
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unsigned rsvd12;
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unsigned threshold_temp_rise;
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unsigned threshold_temp_fall;
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unsigned rsvd13;
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unsigned rsvd14;
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unsigned past_temp3_0;
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unsigned past_temp7_4;
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unsigned past_temp11_8;
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unsigned past_temp15_12;
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unsigned inten;
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unsigned intstat;
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unsigned intclear;
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unsigned rsvd15;
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unsigned emul_con;
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};
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enum tmu_status_t {
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TMU_STATUS_INIT = 0,
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TMU_STATUS_NORMAL,
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TMU_STATUS_WARNING,
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TMU_STATUS_TRIPPED,
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};
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/* Tmeperature threshold values for various thermal events */
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struct temperature_params {
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/* minimum value in temperature code range */
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unsigned int min_val;
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/* maximum value in temperature code range */
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unsigned int max_val;
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/* temperature threshold to start warning */
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unsigned int start_warning;
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/* temperature threshold CPU tripping */
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unsigned int start_tripping;
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/* temperature threshold for HW tripping */
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unsigned int hardware_tripping;
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};
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/* Pre-defined values and thresholds for calibration of current temperature */
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struct tmu_data {
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/* pre-defined temperature thresholds */
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struct temperature_params ts;
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/* pre-defined efuse range minimum value */
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unsigned int efuse_min_value;
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/* pre-defined efuse value for temperature calibration */
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unsigned int efuse_value;
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/* pre-defined efuse range maximum value */
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unsigned int efuse_max_value;
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/* current temperature sensing slope */
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unsigned int slope;
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};
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/* TMU device specific details and status */
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struct tmu_info {
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/* base Address for the TMU */
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unsigned tmu_base;
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/* mux Address for the TMU */
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int tmu_mux;
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/* pre-defined values for calibration and thresholds */
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struct tmu_data data;
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/* value required for triminfo_25 calibration */
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unsigned int te1;
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/* value required for triminfo_85 calibration */
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unsigned int te2;
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/* TMU DC value for threshold calculation */
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int dc_value;
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/* enum value indicating status of the TMU */
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int tmu_state;
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};
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extern struct tmu_info *tmu_info;
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/*
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* Monitors status of the TMU device and exynos temperature
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*
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* @info pointer to TMU info struct
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* @temp pointer to the current temperature value
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* @return enum tmu_status_t value, code indicating event to execute
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* and -1 on error
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*/
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enum tmu_status_t tmu_monitor(struct tmu_info *info, int *temp);
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/*
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* Initialize TMU device
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*
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* @info pointer to TMU info struct
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* @return int value, 0 for success
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*/
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int tmu_init(struct tmu_info *info);
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#endif /* EXYNOS_TMU_H */
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@@ -28,6 +28,7 @@ ramstage-y += power.c
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ramstage-y += soc.c
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ramstage-$(CONFIG_CONSOLE_SERIAL_UART) += uart.c
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ramstage-y += cpu.c
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ramstage-y += exynos5250-tmu.c
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ramstage-y += mct.c
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#ramstage-$(CONFIG_SATA_AHCI) += sata.c
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@@ -120,4 +120,6 @@ enum periph_id exynos5_get_periph_id(unsigned base_addr);
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void exynos5250_config_l2_cache(void);
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extern struct tmu_info exynos5250_tmu_info;
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#endif /* _EXYNOS5250_CPU_H */
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@@ -1,82 +0,0 @@
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/*
|
||||
* 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
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#define __ASM_ARCH_THERMAL_H
|
||||
|
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struct tmu_reg {
|
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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;
|
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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
|
||||
45
src/cpu/samsung/exynos5250/exynos5250-tmu.c
Normal file
45
src/cpu/samsung/exynos5250/exynos5250-tmu.c
Normal file
@@ -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,
|
||||
};
|
||||
Reference in New Issue
Block a user