a73b93157f
It encourages users from writing to the FSF without giving an address. Linux also prefers to drop that and their checkpatch.pl (that we imported) looks out for that. This is the result of util/scripts/no-fsf-addresses.sh with no further editing. Change-Id: Ie96faea295fe001911d77dbc51e9a6789558fbd6 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/11888 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
133 lines
3.3 KiB
C
133 lines
3.3 KiB
C
/*
|
|
* This file is part of the coreboot project.
|
|
*
|
|
* Copyright 2013 Google Inc.
|
|
* Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
|
|
*
|
|
* 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; version 2 of the License.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <arch/io.h>
|
|
#include <assert.h>
|
|
#include <console/console.h>
|
|
#include <soc/addressmap.h>
|
|
#include <soc/pmc.h>
|
|
#include <soc/power.h>
|
|
|
|
static struct tegra_pmc_regs * const pmc = (void *)TEGRA_PMC_BASE;
|
|
|
|
enum {
|
|
POWER_GATE = 0,
|
|
POWER_UNGATE = 1,
|
|
};
|
|
|
|
static int partition_powered(int id)
|
|
{
|
|
if (read32(&pmc->pwrgate_status) & (0x1 << id))
|
|
return POWER_UNGATE;
|
|
|
|
return POWER_GATE;
|
|
}
|
|
|
|
static const char * const power_gate_string[] = {
|
|
[POWER_GATE] = "Gat",
|
|
[POWER_UNGATE] = "Ungat",
|
|
};
|
|
|
|
static void power_gate_toggle_request(uint32_t id, int request)
|
|
{
|
|
printk(BIOS_INFO, "%sing power partition %d.\n",
|
|
power_gate_string[request], id);
|
|
|
|
int part_powered = partition_powered(id);
|
|
|
|
if (request == part_powered) {
|
|
printk(BIOS_INFO, "Partition %d already %sed.\n", id,
|
|
power_gate_string[request]);
|
|
return;
|
|
}
|
|
|
|
uint32_t pwrgate_toggle = read32(&pmc->pwrgate_toggle);
|
|
pwrgate_toggle &= ~(PMC_PWRGATE_TOGGLE_PARTID_MASK);
|
|
pwrgate_toggle |= (id << PMC_PWRGATE_TOGGLE_PARTID_SHIFT);
|
|
pwrgate_toggle |= PMC_PWRGATE_TOGGLE_START;
|
|
write32(&pmc->pwrgate_toggle, pwrgate_toggle);
|
|
|
|
// Wait for the request to be accepted.
|
|
while (read32(&pmc->pwrgate_toggle) & PMC_PWRGATE_TOGGLE_START)
|
|
;
|
|
printk(BIOS_INFO, "Power gate toggle request accepted.\n");
|
|
|
|
while (1) {
|
|
part_powered = partition_powered(id);
|
|
if (request == part_powered) {
|
|
printk(BIOS_INFO, "Partition %d %sed.\n", id,
|
|
power_gate_string[request]);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
void power_gate_partition(uint32_t id)
|
|
{
|
|
power_gate_toggle_request(id, POWER_GATE);
|
|
}
|
|
|
|
void power_ungate_partition(uint32_t id)
|
|
{
|
|
power_gate_toggle_request(id, POWER_UNGATE);
|
|
}
|
|
|
|
uint8_t pmc_rst_status(void)
|
|
{
|
|
return read32(&pmc->rst_status) & PMC_RST_STATUS_SOURCE_MASK;
|
|
}
|
|
|
|
static const char *pmc_rst_status_str[PMC_RST_STATUS_NUM_SOURCES] = {
|
|
[PMC_RST_STATUS_SOURCE_POR] = "POR",
|
|
[PMC_RST_STATUS_SOURCE_WATCHDOG] = "Watchdog",
|
|
[PMC_RST_STATUS_SOURCE_SENSOR] = "Sensor",
|
|
[PMC_RST_STATUS_SOURCE_SW_MAIN] = "SW Main",
|
|
[PMC_RST_STATUS_SOURCE_LP0] = "LP0",
|
|
};
|
|
|
|
void pmc_print_rst_status(void)
|
|
{
|
|
uint8_t rst_status = pmc_rst_status();
|
|
assert(rst_status < PMC_RST_STATUS_NUM_SOURCES);
|
|
printk(BIOS_INFO, "PMC Reset Status: %s\n",
|
|
pmc_rst_status_str[rst_status]);
|
|
}
|
|
|
|
static int partition_clamp_on(int id)
|
|
{
|
|
return read32(&pmc->clamp_status) & (1 << id);
|
|
}
|
|
|
|
void remove_clamps(int id)
|
|
{
|
|
if (!partition_clamp_on(id))
|
|
return;
|
|
|
|
/* Remove clamp */
|
|
write32(&pmc->remove_clamping_cmd, (1 << id));
|
|
|
|
/* Wait for clamp off */
|
|
while (partition_clamp_on(id))
|
|
;
|
|
}
|
|
|
|
void pmc_override_pwr_det(uint32_t bits, uint32_t override)
|
|
{
|
|
uint32_t val = read32(&pmc->pwr_det_val);
|
|
val &= ~bits;
|
|
val |= (override & bits);
|
|
write32(&pmc->pwr_det_val, val);
|
|
}
|