mirror of
https://github.com/CTCaer/hekate
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310 lines
7 KiB
C
310 lines
7 KiB
C
/*
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* Copyright (c) 2018 naehrwert
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* Copyright (c) 2018-2022 CTCaer
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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 <string.h>
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#include <mem/heap.h>
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#include <power/max77620.h>
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#include <rtc/max77620-rtc.h>
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#include <soc/bpmp.h>
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#include <soc/hw_init.h>
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#include <soc/i2c.h>
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#include <soc/pmc.h>
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#include <soc/timer.h>
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#include <soc/t210.h>
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#include <storage/sd.h>
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#include <utils/util.h>
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#define USE_RTC_TIMER
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u8 bit_count(u32 val)
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{
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u8 cnt = 0;
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for (u32 i = 0; i < 32; i++)
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{
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if ((val >> i) & 1)
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cnt++;
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}
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return cnt;
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}
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u32 bit_count_mask(u8 bits)
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{
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u32 val = 0;
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for (u32 i = 0; i < bits; i++)
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val |= 1 << i;
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return val;
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}
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char *strcpy_ns(char *dst, char *src)
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{
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if (!src || !dst)
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return NULL;
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// Remove starting space.
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u32 len = strlen(src);
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if (len && src[0] == ' ')
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{
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len--;
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src++;
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}
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strcpy(dst, src);
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// Remove trailing space.
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if (len && dst[len - 1] == ' ')
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dst[len - 1] = 0;
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return dst;
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}
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// Approximate square root finder for a 64-bit number.
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u64 sqrt64(u64 num)
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{
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u64 base = 0;
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u64 limit = num;
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u64 square_root = 0;
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while (base <= limit)
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{
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u64 tmp_sqrt = (base + limit) / 2;
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if (tmp_sqrt * tmp_sqrt == num) {
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square_root = tmp_sqrt;
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break;
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}
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if (tmp_sqrt * tmp_sqrt < num)
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{
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square_root = base;
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base = tmp_sqrt + 1;
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}
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else
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limit = tmp_sqrt - 1;
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}
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return square_root;
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}
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#define TLONG_MAX ((long)(((unsigned long)(~0L)) >> 1))
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#define TLONG_MIN ((long)(~TLONG_MAX))
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#define ISSPACE(ch) ((ch >= '\t' && ch <= '\r') || (ch == ' '))
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#define ISDIGIT(ch) ( ch >= '0' && ch <= '9' )
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#define ISALPHA(ch) ((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z'))
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#define ISUPPER(ch) ( ch >= 'A' && ch <= 'Z' )
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/*
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* Avoid using reentrant newlib version of strol. It's only used for errno.
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*
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* strol/atoi:
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* Copyright (c) 1990 The Regents of the University of California.
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*/
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long strtol(const char *nptr, char **endptr, register int base)
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{
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register const char *s = nptr;
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register unsigned long acc;
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register int c;
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register unsigned long cutoff;
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register int neg = 0, any, cutlim;
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/*
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* Skip white space and pick up leading +/- sign if any.
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* If base is 0, allow 0x for hex and 0 for octal, else
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* assume decimal; if base is already 16, allow 0x.
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*/
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do {
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c = *s++;
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} while (ISSPACE(c));
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if (c == '-') {
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neg = 1;
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c = *s++;
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} else if (c == '+')
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c = *s++;
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if ((base == 0 || base == 16) &&
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c == '0' && (*s == 'x' || *s == 'X')) {
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c = s[1];
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s += 2;
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base = 16;
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}
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if (base == 0)
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base = c == '0' ? 8 : 10;
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/*
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* Compute the cutoff value between legal numbers and illegal
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* numbers. That is the largest legal value, divided by the
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* base. An input number that is greater than this value, if
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* followed by a legal input character, is too big. One that
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* is equal to this value may be valid or not; the limit
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* between valid and invalid numbers is then based on the last
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* digit. For instance, if the range for longs is
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* [-2147483648..2147483647] and the input base is 10,
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* cutoff will be set to 214748364 and cutlim to either
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* 7 (neg==0) or 8 (neg==1), meaning that if we have accumulated
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* a value > 214748364, or equal but the next digit is > 7 (or 8),
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* the number is too big, and we will return a range error.
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*
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* Set any if any `digits' consumed; make it negative to indicate
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* overflow.
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*/
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cutoff = neg ? -(unsigned long)TLONG_MIN : TLONG_MAX;
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cutlim = cutoff % (unsigned long)base;
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cutoff /= (unsigned long)base;
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for (acc = 0, any = 0;; c = *s++) {
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if (ISDIGIT(c))
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c -= '0';
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else if (ISALPHA(c))
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c -= ISUPPER(c) ? 'A' - 10 : 'a' - 10;
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else
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break;
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if (c >= base)
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break;
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if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim))
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any = -1;
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else {
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any = 1;
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acc *= base;
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acc += c;
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}
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}
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if (any < 0) {
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acc = neg ? TLONG_MIN : TLONG_MAX;
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} else if (neg)
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acc = -acc;
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if (endptr != 0)
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*endptr = (char *) (any ? s - 1 : nptr);
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return (acc);
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}
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int atoi(const char *nptr)
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{
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return (int)strtol(nptr, (char **)NULL, 10);
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}
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void exec_cfg(u32 *base, const cfg_op_t *ops, u32 num_ops)
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{
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for(u32 i = 0; i < num_ops; i++)
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base[ops[i].off] = ops[i].val;
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}
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u32 crc32_calc(u32 crc, const u8 *buf, u32 len)
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{
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const u8 *p, *q;
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static u32 *table = NULL;
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// Calculate CRC table.
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if (!table)
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{
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table = calloc(256, sizeof(u32));
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for (u32 i = 0; i < 256; i++)
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{
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u32 rem = i;
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for (u32 j = 0; j < 8; j++)
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{
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if (rem & 1)
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{
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rem >>= 1;
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rem ^= 0xedb88320;
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}
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else
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rem >>= 1;
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}
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table[i] = rem;
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}
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}
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crc = ~crc;
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q = buf + len;
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for (p = buf; p < q; p++)
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{
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u8 oct = *p;
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crc = (crc >> 8) ^ table[(crc & 0xff) ^ oct];
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}
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return ~crc;
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}
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void panic(u32 val)
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{
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// Set panic code.
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PMC(APBDEV_PMC_SCRATCH200) = val;
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// Disable SE.
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//PMC(APBDEV_PMC_CRYPTO_OP) = PMC_CRYPTO_OP_SE_DISABLE;
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// Immediately cause a full system reset.
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watchdog_start(0, TIMER_PMCRESET_EN);
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while (true);
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}
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void power_set_state(power_state_t state)
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{
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u8 reg;
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// Unmount and power down sd card.
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sd_end();
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// De-initialize and power down various hardware.
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hw_reinit_workaround(false, 0);
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// Stop the alarm, in case we injected and powered off too fast.
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max77620_rtc_stop_alarm();
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// Set power state.
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switch (state)
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{
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case REBOOT_RCM:
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PMC(APBDEV_PMC_SCRATCH0) = PMC_SCRATCH0_MODE_RCM; // Enable RCM path.
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PMC(APBDEV_PMC_CNTRL) |= PMC_CNTRL_MAIN_RST; // PMC reset.
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break;
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case REBOOT_BYPASS_FUSES:
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panic(0x21); // Bypass fuse programming in package1.
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break;
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case POWER_OFF:
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// Initiate power down sequence and do not generate a reset (regulators retain state after POR).
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i2c_send_byte(I2C_5, MAX77620_I2C_ADDR, MAX77620_REG_ONOFFCNFG1, MAX77620_ONOFFCNFG1_PWR_OFF);
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break;
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case POWER_OFF_RESET:
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case POWER_OFF_REBOOT:
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default:
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// Enable/Disable soft reset wake event.
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reg = i2c_recv_byte(I2C_5, MAX77620_I2C_ADDR, MAX77620_REG_ONOFFCNFG2);
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if (state == POWER_OFF_RESET) // Do not wake up after power off.
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reg &= ~(MAX77620_ONOFFCNFG2_SFT_RST_WK | MAX77620_ONOFFCNFG2_WK_ALARM1 | MAX77620_ONOFFCNFG2_WK_ALARM2);
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else // POWER_OFF_REBOOT. Wake up after power off.
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reg |= MAX77620_ONOFFCNFG2_SFT_RST_WK;
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i2c_send_byte(I2C_5, MAX77620_I2C_ADDR, MAX77620_REG_ONOFFCNFG2, reg);
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// Initiate power down sequence and generate a reset (regulators' state resets after POR).
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i2c_send_byte(I2C_5, MAX77620_I2C_ADDR, MAX77620_REG_ONOFFCNFG1, MAX77620_ONOFFCNFG1_SFT_RST);
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break;
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}
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while (true)
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bpmp_halt();
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}
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void power_set_state_ex(void *param)
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{
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power_state_t *state = (power_state_t *)param;
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power_set_state(*state);
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}
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