Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2)  * This file is subject to the terms and conditions of the GNU General Public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * License.  See the file "COPYING" in the main directory of this archive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * Copyright (C) 2001, 2002 Ralf Baechle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <asm/page.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <asm/setup.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <asm/sn/addrs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <asm/sn/agent.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <asm/sn/klconfig.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <asm/sn/ioc3.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/serial.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/serial_core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "ip27-common.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define IOC3_CLK	(22000000 / 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define IOC3_FLAGS	(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) static inline struct ioc3_uartregs *console_uart(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	struct ioc3 *ioc3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	nasid_t nasid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	nasid = (master_nasid == INVALID_NASID) ? get_nasid() : master_nasid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	ioc3 = (struct ioc3 *)KL_CONFIG_CH_CONS_INFO(nasid)->memory_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	return &ioc3->sregs.uarta;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) void prom_putchar(char c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	struct ioc3_uartregs *uart = console_uart();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	while ((readb(&uart->iu_lsr) & 0x20) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 		;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	writeb(c, &uart->iu_thr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) }