b5d514cfac
We need to rewrite the code from coreboot or uboot's porting for Tegra T124.Instead of simply learning the init process from hekate.(Many heakte codes are only in Tegra T210)
104 lines
2.4 KiB
C
104 lines
2.4 KiB
C
/*
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* Copyright (c) 2024 hydrogenium2020-offical
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* Copyright (c) 2018 naehrwert
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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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, see <http://www.gnu.org/licenses/>.
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*/
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#include "types.h"
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#include "printf.h"
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#include "string.h"
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#include "t124.h"
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#include "se.h"
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#include "usb.h"
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#include "bootrom.h"
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#include "fuse.h"
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#include "mc.h"
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#include "clock.h"
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#include "util.h"
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#include "pinmux.h"
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#include "gpio.h"
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#include "i2c.h"
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static inline u32 read32(uintptr_t addr) {
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return *(vu32 *)addr;
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}
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static inline void write32(uintptr_t addr, u32 val) {
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*(vu32 *)addr = val;
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}
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static inline void or32(uintptr_t addr, u32 val) {
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write32(addr, read32(addr) | val);
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}
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void *memset(void *s, int c, size_t n) {
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unsigned char* p = (unsigned char*)s;
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for (size_t i = 0; i < n; i++) {
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*p++ = (unsigned char)c;
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}
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return s;
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}
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#define PMC_CNTRL 0x000
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#define PMC_CNTRL_MAIN_RST (1 << 4)
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#define PMC_SCRATCH0 0x050
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#define PMC_SCRATCH0_MODE_RCM (1 << 1)
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void enter_rcm() {
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or32(PMC_BASE + PMC_SCRATCH0, PMC_SCRATCH0_MODE_RCM);
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or32(PMC_BASE + PMC_CNTRL, PMC_CNTRL_MAIN_RST);
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}
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void config_hw(){
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printf_("Starting Initing hardware.");
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fuse_disable_program();
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printf_("[x] fuse program disabled\n");
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// Initialize counters, CLKM, BPMP(also called AVP in T124/T132) and other clocks based on 38.4MHz oscillator.
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config_oscillators();
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mc_enable();
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printf_("[x] mc setup\n");
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config_gpios();
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printf_("[x] GPIO setup\n");
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//clock_enable_cl_dvfs();
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//printf_("[x] DVFS setup\n");
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//FIXME I2C Doesn't work!!!
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printf_("Fixme.I2C doesn't work");
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// clock_enable_i2c(I2C_1);
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// clock_enable_i2c(I2C_5);
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}
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__attribute__((section(".init")))
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void _start() {
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// u8 *buffer = (u8*)0x40020000;
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printf_("gardenia is booting.");
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//printf_("%p",&_start);
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//pivot_stack(0x200);
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//Setting up hardware
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dump_pkc();
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config_hw();
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enter_rcm();
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}
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