Atmosphere/fusee/fusee-secondary/src/car.c

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/*
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* Copyright (c) 2018-2019 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
*/
#include "car.h"
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#include "timers.h"
#include "utils.h"
static inline uint32_t get_clk_source_reg(CarDevice dev) {
switch (dev) {
case CARDEVICE_UARTA: return 0x178;
case CARDEVICE_UARTB: return 0x17C;
case CARDEVICE_UARTC: return 0x1A0;
case CARDEVICE_I2C1: return 0x124;
case CARDEVICE_I2C5: return 0x128;
case CARDEVICE_TZRAM: return 0;
case CARDEVICE_SE: return 0x42C;
case CARDEVICE_HOST1X: return 0x180;
case CARDEVICE_TSEC: return 0x1F4;
case CARDEVICE_SOR_SAFE: return 0;
case CARDEVICE_SOR0: return 0;
case CARDEVICE_SOR1: return 0x410;
case CARDEVICE_KFUSE: return 0;
case CARDEVICE_CL_DVFS: return 0;
case CARDEVICE_CORESIGHT: return 0x1D4;
case CARDEVICE_ACTMON: return 0x3E8;
case CARDEVICE_BPMP: return 0;
default: generic_panic();
}
}
static inline uint32_t get_clk_source_val(CarDevice dev) {
switch (dev) {
case CARDEVICE_UARTA: return 0;
case CARDEVICE_UARTB: return 0;
case CARDEVICE_UARTC: return 0;
case CARDEVICE_I2C1: return 6;
case CARDEVICE_I2C5: return 6;
case CARDEVICE_TZRAM: return 0;
case CARDEVICE_SE: return 0;
case CARDEVICE_HOST1X: return 4;
case CARDEVICE_TSEC: return 0;
case CARDEVICE_SOR_SAFE: return 0;
case CARDEVICE_SOR0: return 0;
case CARDEVICE_SOR1: return 0;
case CARDEVICE_KFUSE: return 0;
case CARDEVICE_CL_DVFS: return 0;
case CARDEVICE_CORESIGHT: return 0;
case CARDEVICE_ACTMON: return 6;
case CARDEVICE_BPMP: return 0;
default: generic_panic();
}
}
static inline uint32_t get_clk_source_div(CarDevice dev) {
switch (dev) {
case CARDEVICE_UARTA: return 0;
case CARDEVICE_UARTB: return 0;
case CARDEVICE_UARTC: return 0;
case CARDEVICE_I2C1: return 0;
case CARDEVICE_I2C5: return 0;
case CARDEVICE_TZRAM: return 0;
case CARDEVICE_SE: return 0;
case CARDEVICE_HOST1X: return 3;
case CARDEVICE_TSEC: return 2;
case CARDEVICE_SOR_SAFE: return 0;
case CARDEVICE_SOR0: return 0;
case CARDEVICE_SOR1: return 2;
case CARDEVICE_KFUSE: return 0;
case CARDEVICE_CL_DVFS: return 0;
case CARDEVICE_CORESIGHT: return 4;
case CARDEVICE_ACTMON: return 0;
case CARDEVICE_BPMP: return 0;
default: generic_panic();
}
}
static uint32_t g_clk_reg_offsets[NUM_CAR_BANKS] = {0x010, 0x014, 0x018, 0x360, 0x364, 0x280, 0x298};
static uint32_t g_rst_reg_offsets[NUM_CAR_BANKS] = {0x004, 0x008, 0x00C, 0x358, 0x35C, 0x28C, 0x2A4};
void clk_enable(CarDevice dev) {
uint32_t clk_source_reg;
if ((clk_source_reg = get_clk_source_reg(dev))) {
MAKE_CAR_REG(clk_source_reg) = (get_clk_source_val(dev) << 29) | get_clk_source_div(dev);
}
MAKE_CAR_REG(g_clk_reg_offsets[dev >> 5]) |= BIT(dev & 0x1F);
}
void clk_disable(CarDevice dev) {
MAKE_CAR_REG(g_clk_reg_offsets[dev >> 5]) &= ~(BIT(dev & 0x1F));
}
void rst_enable(CarDevice dev) {
MAKE_CAR_REG(g_rst_reg_offsets[dev >> 5]) |= BIT(dev & 0x1F);
}
void rst_disable(CarDevice dev) {
MAKE_CAR_REG(g_rst_reg_offsets[dev >> 5]) &= ~(BIT(dev & 0x1F));
}
void clkrst_enable(CarDevice dev) {
clk_enable(dev);
rst_disable(dev);
}
void clkrst_disable(CarDevice dev) {
rst_enable(dev);
clk_disable(dev);
}
void clkrst_reboot(CarDevice dev) {
clkrst_disable(dev);
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if (dev == CARDEVICE_KFUSE) {
/* Workaround for KFUSE clock. */
clk_enable(dev);
udelay(100);
rst_disable(dev);
udelay(200);
} else {
clkrst_enable(dev);
}
}
void clkrst_enable_fuse_regs(bool enable) {
volatile tegra_car_t *car = car_get_regs();
car->misc_clk_enb = ((car->misc_clk_enb & 0xEFFFFFFF) | ((enable & 1) << 28));
}