Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <linux/memblock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <abi/reg_ops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) static void percpu_print(void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	struct seq_file *m = (struct seq_file *)arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	unsigned int cur, next, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	seq_printf(m, "processor       : %d\n", smp_processor_id());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	seq_printf(m, "C-SKY CPU model : %s\n", CSKYCPU_DEF_NAME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	/* read processor id, max is 100 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	cur  = mfcr("cr13");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	for (i = 0; i < 100; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 		seq_printf(m, "product info[%d] : 0x%08x\n", i, cur);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 		next = mfcr("cr13");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		/* some CPU only has one id reg */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		if (cur == next)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 		cur = next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 		/* cpid index is 31-28, reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		if (!(next >> 28)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 			while ((mfcr("cr13") >> 28) != i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	/* CPU feature regs, setup by bootloader or gdbinit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	seq_printf(m, "hint (CPU funcs): 0x%08x\n", mfcr_hint());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	seq_printf(m, "ccr  (L1C & MMU): 0x%08x\n", mfcr("cr18"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	seq_printf(m, "ccr2 (L2C)      : 0x%08x\n", mfcr_ccr2());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	seq_printf(m, "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) static int c_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	int cpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	for_each_online_cpu(cpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 		smp_call_function_single(cpu, percpu_print, m, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #ifdef CSKY_ARCH_VERSION
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	seq_printf(m, "arch-version : %s\n", CSKY_ARCH_VERSION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	seq_printf(m, "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) static void *c_start(struct seq_file *m, loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 	return *pos < 1 ? (void *)1 : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static void *c_next(struct seq_file *m, void *v, loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 	++*pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 	return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static void c_stop(struct seq_file *m, void *v) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) const struct seq_operations cpuinfo_op = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 	.start	= c_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 	.next	= c_next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 	.stop	= c_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 	.show	= c_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) };